./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:40:20,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:40:21,008 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:40:21,016 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:40:21,017 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:40:21,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:40:21,047 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:40:21,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:40:21,048 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:40:21,052 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:40:21,052 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:40:21,052 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:40:21,053 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:40:21,054 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:40:21,054 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:40:21,054 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:40:21,055 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:40:21,055 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:40:21,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:40:21,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:40:21,056 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:40:21,056 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:40:21,057 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:40:21,057 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:40:21,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:40:21,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:40:21,057 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:40:21,058 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:40:21,058 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:40:21,058 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:40:21,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:40:21,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:40:21,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:40:21,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:40:21,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:40:21,060 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:40:21,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:40:21,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:40:21,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:40:21,061 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:40:21,061 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:40:21,061 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:40:21,061 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:40:21,061 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:40:21,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:40:21,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:40:21,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:40:21,293 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:40:21,293 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:40:21,294 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 18:40:21,434 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:40:21,435 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:40:21,435 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:40:22,427 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:40:22,597 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:40:22,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:40:22,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178faca9b/56ebdbcdc2264980a7719c75904cd38d/FLAG8e630434b [2024-06-27 18:40:22,643 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/178faca9b/56ebdbcdc2264980a7719c75904cd38d [2024-06-27 18:40:22,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:40:22,644 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:40:22,645 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:40:22,645 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:40:22,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:40:22,651 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:40:21" (1/2) ... [2024-06-27 18:40:22,651 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578a446f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:40:22, skipping insertion in model container [2024-06-27 18:40:22,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:40:21" (1/2) ... [2024-06-27 18:40:22,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@149e7960 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:40:22, skipping insertion in model container [2024-06-27 18:40:22,653 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:40:22" (2/2) ... [2024-06-27 18:40:22,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@578a446f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:22, skipping insertion in model container [2024-06-27 18:40:22,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:40:22" (2/2) ... [2024-06-27 18:40:22,654 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:40:22,731 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:40:22,732 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-27 18:40:22,732 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-27 18:40:22,732 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:40:22,732 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-27 18:40:22,768 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:40:22,896 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-27 18:40:23,092 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:40:23,115 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:40:23,148 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:40:23,217 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:40:23,243 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:40:23,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23 WrapperNode [2024-06-27 18:40:23,244 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:40:23,245 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:40:23,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:40:23,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:40:23,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,266 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,289 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-27 18:40:23,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:40:23,291 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:40:23,291 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:40:23,291 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:40:23,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,302 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,314 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:40:23,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,314 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,320 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,323 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:40:23,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:40:23,327 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:40:23,327 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:40:23,328 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (1/1) ... [2024-06-27 18:40:23,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:40:23,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:40:23,371 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:40:23,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:40:23,411 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:40:23,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:40:23,411 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:40:23,411 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:40:23,411 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:40:23,411 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:40:23,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:40:23,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:40:23,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:40:23,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:40:23,413 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:40:23,540 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:40:23,542 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:40:23,736 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:40:23,737 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:40:23,913 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:40:23,913 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:40:23,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:40:23 BoogieIcfgContainer [2024-06-27 18:40:23,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:40:23,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:40:23,917 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:40:23,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:40:23,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:40:21" (1/4) ... [2024-06-27 18:40:23,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283901cb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:40:23, skipping insertion in model container [2024-06-27 18:40:23,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:40:22" (2/4) ... [2024-06-27 18:40:23,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283901cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:40:23, skipping insertion in model container [2024-06-27 18:40:23,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:40:23" (3/4) ... [2024-06-27 18:40:23,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@283901cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:40:23, skipping insertion in model container [2024-06-27 18:40:23,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:40:23" (4/4) ... [2024-06-27 18:40:23,927 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:40:23,941 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:40:23,942 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:40:23,942 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:40:23,983 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:40:24,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:40:24,048 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:40:24,048 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:40:24,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-06-27 18:40:24,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:40:24,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:40:24,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:40:24,072 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6dfb770d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:40:24,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:40:24,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:40:24,075 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:40:24,075 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:40:24,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:24,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:40:24,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:24,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:24,083 INFO L85 PathProgramCache]: Analyzing trace with hash 313150133, now seen corresponding path program 1 times [2024-06-27 18:40:24,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:24,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956545859] [2024-06-27 18:40:24,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:24,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:24,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:24,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956545859] [2024-06-27 18:40:24,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956545859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:24,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:24,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:40:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403774902] [2024-06-27 18:40:24,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:24,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:40:24,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:40:25,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:40:25,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:40:25,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:25,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:25,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:40:25,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:25,214 INFO L124 PetriNetUnfolderBase]: 543/1069 cut-off events. [2024-06-27 18:40:25,215 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:40:25,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1989 conditions, 1069 events. 543/1069 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5921 event pairs, 424 based on Foata normal form. 43/1003 useless extension candidates. Maximal degree in co-relation 1978. Up to 892 conditions per place. [2024-06-27 18:40:25,221 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-27 18:40:25,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 173 flow [2024-06-27 18:40:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:40:25,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:40:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-27 18:40:25,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-06-27 18:40:25,232 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 76 transitions. [2024-06-27 18:40:25,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 173 flow [2024-06-27 18:40:25,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 170 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:25,235 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:40:25,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-27 18:40:25,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:40:25,239 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:40:25,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:25,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:25,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:25,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:40:25,240 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:25,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash 289967898, now seen corresponding path program 1 times [2024-06-27 18:40:25,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:25,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333816703] [2024-06-27 18:40:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:25,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:25,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:25,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:25,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333816703] [2024-06-27 18:40:25,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333816703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:25,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:25,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:40:25,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182495718] [2024-06-27 18:40:25,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:25,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:40:25,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:25,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:40:25,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:40:25,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:40:25,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:25,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:25,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:40:25,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:26,075 INFO L124 PetriNetUnfolderBase]: 621/1091 cut-off events. [2024-06-27 18:40:26,076 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-06-27 18:40:26,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1091 events. 621/1091 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5521 event pairs, 273 based on Foata normal form. 2/1030 useless extension candidates. Maximal degree in co-relation 2356. Up to 997 conditions per place. [2024-06-27 18:40:26,081 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 42 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-27 18:40:26,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 248 flow [2024-06-27 18:40:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:40:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:40:26,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-27 18:40:26,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-06-27 18:40:26,085 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 95 transitions. [2024-06-27 18:40:26,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 248 flow [2024-06-27 18:40:26,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:40:26,088 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-27 18:40:26,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-27 18:40:26,089 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 18:40:26,089 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-27 18:40:26,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:26,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:26,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:40:26,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:26,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:26,094 INFO L85 PathProgramCache]: Analyzing trace with hash 399071120, now seen corresponding path program 1 times [2024-06-27 18:40:26,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:26,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773747558] [2024-06-27 18:40:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:26,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:26,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:26,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773747558] [2024-06-27 18:40:26,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773747558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:26,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:26,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:40:26,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813954911] [2024-06-27 18:40:26,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:26,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:40:26,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:26,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:40:26,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:40:26,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:40:26,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:26,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:26,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:40:26,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:27,104 INFO L124 PetriNetUnfolderBase]: 613/1171 cut-off events. [2024-06-27 18:40:27,105 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-06-27 18:40:27,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2640 conditions, 1171 events. 613/1171 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6449 event pairs, 197 based on Foata normal form. 4/1083 useless extension candidates. Maximal degree in co-relation 2626. Up to 968 conditions per place. [2024-06-27 18:40:27,111 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 49 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-06-27 18:40:27,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 360 flow [2024-06-27 18:40:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:40:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:40:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-27 18:40:27,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2024-06-27 18:40:27,117 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 5 states and 113 transitions. [2024-06-27 18:40:27,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 360 flow [2024-06-27 18:40:27,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 71 transitions, 334 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:27,121 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 231 flow [2024-06-27 18:40:27,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=231, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2024-06-27 18:40:27,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 18:40:27,122 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 231 flow [2024-06-27 18:40:27,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:27,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:27,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:27,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:40:27,123 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:27,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:27,123 INFO L85 PathProgramCache]: Analyzing trace with hash 386992459, now seen corresponding path program 1 times [2024-06-27 18:40:27,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:27,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641554876] [2024-06-27 18:40:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:27,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:27,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641554876] [2024-06-27 18:40:27,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641554876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:27,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:27,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:40:27,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131930929] [2024-06-27 18:40:27,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:27,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:40:27,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:27,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:40:27,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:40:27,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-27 18:40:27,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 231 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:27,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:27,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-27 18:40:27,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:27,246 INFO L124 PetriNetUnfolderBase]: 191/559 cut-off events. [2024-06-27 18:40:27,247 INFO L125 PetriNetUnfolderBase]: For 288/314 co-relation queries the response was YES. [2024-06-27 18:40:27,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 559 events. 191/559 cut-off events. For 288/314 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3541 event pairs, 48 based on Foata normal form. 10/532 useless extension candidates. Maximal degree in co-relation 1125. Up to 286 conditions per place. [2024-06-27 18:40:27,250 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 25 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-27 18:40:27,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 270 flow [2024-06-27 18:40:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:40:27,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:40:27,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-27 18:40:27,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2024-06-27 18:40:27,251 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 231 flow. Second operand 3 states and 82 transitions. [2024-06-27 18:40:27,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 270 flow [2024-06-27 18:40:27,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 54 transitions, 266 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:40:27,253 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 198 flow [2024-06-27 18:40:27,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=51, PETRI_TRANSITIONS=46} [2024-06-27 18:40:27,254 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-27 18:40:27,254 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 198 flow [2024-06-27 18:40:27,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:27,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:27,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:27,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:40:27,255 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:27,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1657047827, now seen corresponding path program 1 times [2024-06-27 18:40:27,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:27,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147174299] [2024-06-27 18:40:27,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:27,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:28,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:28,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147174299] [2024-06-27 18:40:28,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147174299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:28,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:28,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413554446] [2024-06-27 18:40:28,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:28,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:28,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:28,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:28,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:40:28,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 198 flow. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:28,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:28,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:40:28,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:28,528 INFO L124 PetriNetUnfolderBase]: 531/1016 cut-off events. [2024-06-27 18:40:28,528 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2024-06-27 18:40:28,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 1016 events. 531/1016 cut-off events. For 732/732 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5404 event pairs, 130 based on Foata normal form. 4/977 useless extension candidates. Maximal degree in co-relation 2436. Up to 808 conditions per place. [2024-06-27 18:40:28,533 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-06-27 18:40:28,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 378 flow [2024-06-27 18:40:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:28,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-27 18:40:28,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630630630630631 [2024-06-27 18:40:28,535 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 198 flow. Second operand 6 states and 125 transitions. [2024-06-27 18:40:28,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 378 flow [2024-06-27 18:40:28,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:28,537 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 219 flow [2024-06-27 18:40:28,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2024-06-27 18:40:28,538 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-27 18:40:28,538 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 219 flow [2024-06-27 18:40:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:28,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:28,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:28,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:40:28,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:28,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1762631065, now seen corresponding path program 1 times [2024-06-27 18:40:28,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:28,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597383097] [2024-06-27 18:40:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:28,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:28,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:28,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597383097] [2024-06-27 18:40:28,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597383097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:28,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:28,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:40:28,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400714547] [2024-06-27 18:40:28,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:28,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:40:28,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:28,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:40:28,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:40:29,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:40:29,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:29,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:29,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:40:29,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:29,225 INFO L124 PetriNetUnfolderBase]: 452/897 cut-off events. [2024-06-27 18:40:29,225 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-27 18:40:29,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 897 events. 452/897 cut-off events. For 793/793 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4702 event pairs, 186 based on Foata normal form. 1/855 useless extension candidates. Maximal degree in co-relation 2245. Up to 738 conditions per place. [2024-06-27 18:40:29,229 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 48 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-27 18:40:29,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 388 flow [2024-06-27 18:40:29,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:40:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:40:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 18:40:29,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 18:40:29,231 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 219 flow. Second operand 5 states and 91 transitions. [2024-06-27 18:40:29,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 388 flow [2024-06-27 18:40:29,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 355 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:29,233 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 248 flow [2024-06-27 18:40:29,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-06-27 18:40:29,234 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-27 18:40:29,234 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 248 flow [2024-06-27 18:40:29,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:29,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:29,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:29,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:40:29,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:29,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:29,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1193013464, now seen corresponding path program 1 times [2024-06-27 18:40:29,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:29,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89923778] [2024-06-27 18:40:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:29,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:29,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:29,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:29,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89923778] [2024-06-27 18:40:29,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89923778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:29,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:29,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:29,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260398798] [2024-06-27 18:40:29,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:29,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:29,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:29,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:29,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:29,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:29,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:29,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:29,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:29,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:29,946 INFO L124 PetriNetUnfolderBase]: 537/1045 cut-off events. [2024-06-27 18:40:29,946 INFO L125 PetriNetUnfolderBase]: For 1139/1139 co-relation queries the response was YES. [2024-06-27 18:40:29,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2745 conditions, 1045 events. 537/1045 cut-off events. For 1139/1139 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5517 event pairs, 333 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 2721. Up to 860 conditions per place. [2024-06-27 18:40:29,951 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 54 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2024-06-27 18:40:29,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 72 transitions, 449 flow [2024-06-27 18:40:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:29,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 18:40:29,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44015444015444016 [2024-06-27 18:40:29,952 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 248 flow. Second operand 7 states and 114 transitions. [2024-06-27 18:40:29,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 72 transitions, 449 flow [2024-06-27 18:40:29,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 72 transitions, 439 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:29,955 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 297 flow [2024-06-27 18:40:29,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2024-06-27 18:40:29,956 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 20 predicate places. [2024-06-27 18:40:29,956 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 297 flow [2024-06-27 18:40:29,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:29,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:29,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:29,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:40:29,959 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:29,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:29,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1057374618, now seen corresponding path program 1 times [2024-06-27 18:40:29,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:29,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71301359] [2024-06-27 18:40:29,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:29,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:30,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:30,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71301359] [2024-06-27 18:40:30,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71301359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:30,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:30,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:30,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339850805] [2024-06-27 18:40:30,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:30,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:30,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:30,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:30,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:30,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:30,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:30,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:30,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:30,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:30,636 INFO L124 PetriNetUnfolderBase]: 604/1164 cut-off events. [2024-06-27 18:40:30,637 INFO L125 PetriNetUnfolderBase]: For 1750/1750 co-relation queries the response was YES. [2024-06-27 18:40:30,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3224 conditions, 1164 events. 604/1164 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6204 event pairs, 333 based on Foata normal form. 1/1118 useless extension candidates. Maximal degree in co-relation 3197. Up to 952 conditions per place. [2024-06-27 18:40:30,642 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 60 selfloop transitions, 16 changer transitions 0/84 dead transitions. [2024-06-27 18:40:30,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 84 transitions, 551 flow [2024-06-27 18:40:30,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:30,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 18:40:30,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2024-06-27 18:40:30,643 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 297 flow. Second operand 7 states and 121 transitions. [2024-06-27 18:40:30,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 84 transitions, 551 flow [2024-06-27 18:40:30,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 530 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:30,649 INFO L231 Difference]: Finished difference. Result has 66 places, 65 transitions, 393 flow [2024-06-27 18:40:30,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=393, PETRI_PLACES=66, PETRI_TRANSITIONS=65} [2024-06-27 18:40:30,651 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 25 predicate places. [2024-06-27 18:40:30,651 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 65 transitions, 393 flow [2024-06-27 18:40:30,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:30,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:30,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:30,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:40:30,652 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:30,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:30,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1677039226, now seen corresponding path program 2 times [2024-06-27 18:40:30,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:30,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805047581] [2024-06-27 18:40:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:30,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:31,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:31,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:31,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805047581] [2024-06-27 18:40:31,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805047581] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:31,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:31,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:31,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80908225] [2024-06-27 18:40:31,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:31,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:31,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:31,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:31,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 65 transitions, 393 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:31,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:31,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:31,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:31,410 INFO L124 PetriNetUnfolderBase]: 615/1182 cut-off events. [2024-06-27 18:40:31,410 INFO L125 PetriNetUnfolderBase]: For 2458/2458 co-relation queries the response was YES. [2024-06-27 18:40:31,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3605 conditions, 1182 events. 615/1182 cut-off events. For 2458/2458 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6299 event pairs, 329 based on Foata normal form. 1/1136 useless extension candidates. Maximal degree in co-relation 3575. Up to 959 conditions per place. [2024-06-27 18:40:31,416 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 59 selfloop transitions, 16 changer transitions 0/83 dead transitions. [2024-06-27 18:40:31,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 83 transitions, 607 flow [2024-06-27 18:40:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:31,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 18:40:31,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:40:31,417 INFO L175 Difference]: Start difference. First operand has 66 places, 65 transitions, 393 flow. Second operand 6 states and 105 transitions. [2024-06-27 18:40:31,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 83 transitions, 607 flow [2024-06-27 18:40:31,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 590 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:31,422 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 432 flow [2024-06-27 18:40:31,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=432, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2024-06-27 18:40:31,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 29 predicate places. [2024-06-27 18:40:31,423 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 432 flow [2024-06-27 18:40:31,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:31,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:31,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:31,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:40:31,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:31,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:31,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1671295546, now seen corresponding path program 3 times [2024-06-27 18:40:31,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:31,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412335380] [2024-06-27 18:40:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:31,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:31,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:31,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412335380] [2024-06-27 18:40:31,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412335380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:31,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:31,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:40:31,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856759311] [2024-06-27 18:40:31,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:31,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:40:31,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:31,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:40:31,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:40:31,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:31,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 432 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:31,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:31,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:31,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:32,226 INFO L124 PetriNetUnfolderBase]: 595/1137 cut-off events. [2024-06-27 18:40:32,226 INFO L125 PetriNetUnfolderBase]: For 3074/3074 co-relation queries the response was YES. [2024-06-27 18:40:32,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3724 conditions, 1137 events. 595/1137 cut-off events. For 3074/3074 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5973 event pairs, 304 based on Foata normal form. 1/1098 useless extension candidates. Maximal degree in co-relation 3692. Up to 907 conditions per place. [2024-06-27 18:40:32,233 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 60 selfloop transitions, 18 changer transitions 0/86 dead transitions. [2024-06-27 18:40:32,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 666 flow [2024-06-27 18:40:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:40:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:40:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 18:40:32,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:40:32,234 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 432 flow. Second operand 6 states and 106 transitions. [2024-06-27 18:40:32,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 666 flow [2024-06-27 18:40:32,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 626 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:32,239 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 453 flow [2024-06-27 18:40:32,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=453, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-06-27 18:40:32,244 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 31 predicate places. [2024-06-27 18:40:32,245 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 453 flow [2024-06-27 18:40:32,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:32,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:32,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:32,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:40:32,246 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:32,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:32,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1671286618, now seen corresponding path program 1 times [2024-06-27 18:40:32,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:32,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579904018] [2024-06-27 18:40:32,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:32,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:32,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:32,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:32,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579904018] [2024-06-27 18:40:32,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579904018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:32,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:32,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:32,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135893358] [2024-06-27 18:40:32,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:32,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:32,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:32,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:32,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:32,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:32,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 453 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:32,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:32,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:32,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:33,138 INFO L124 PetriNetUnfolderBase]: 578/1111 cut-off events. [2024-06-27 18:40:33,139 INFO L125 PetriNetUnfolderBase]: For 2696/2696 co-relation queries the response was YES. [2024-06-27 18:40:33,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3630 conditions, 1111 events. 578/1111 cut-off events. For 2696/2696 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5842 event pairs, 320 based on Foata normal form. 1/1073 useless extension candidates. Maximal degree in co-relation 3597. Up to 911 conditions per place. [2024-06-27 18:40:33,145 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 75 selfloop transitions, 12 changer transitions 0/94 dead transitions. [2024-06-27 18:40:33,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 94 transitions, 723 flow [2024-06-27 18:40:33,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:33,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 18:40:33,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2024-06-27 18:40:33,146 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 453 flow. Second operand 7 states and 121 transitions. [2024-06-27 18:40:33,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 94 transitions, 723 flow [2024-06-27 18:40:33,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 682 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:33,151 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 455 flow [2024-06-27 18:40:33,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=455, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-06-27 18:40:33,152 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-27 18:40:33,152 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 455 flow [2024-06-27 18:40:33,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:33,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:33,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:33,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:40:33,153 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:33,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash -586035280, now seen corresponding path program 1 times [2024-06-27 18:40:33,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:33,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731946666] [2024-06-27 18:40:33,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:33,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:33,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:33,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:33,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731946666] [2024-06-27 18:40:33,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731946666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:33,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:33,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:33,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097429656] [2024-06-27 18:40:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:33,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:33,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:33,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:33,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:33,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 455 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:33,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:33,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:33,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:33,923 INFO L124 PetriNetUnfolderBase]: 649/1233 cut-off events. [2024-06-27 18:40:33,923 INFO L125 PetriNetUnfolderBase]: For 3512/3516 co-relation queries the response was YES. [2024-06-27 18:40:33,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4084 conditions, 1233 events. 649/1233 cut-off events. For 3512/3516 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6589 event pairs, 202 based on Foata normal form. 5/1188 useless extension candidates. Maximal degree in co-relation 4050. Up to 965 conditions per place. [2024-06-27 18:40:33,931 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 71 selfloop transitions, 30 changer transitions 0/109 dead transitions. [2024-06-27 18:40:33,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 109 transitions, 804 flow [2024-06-27 18:40:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:33,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 18:40:33,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:40:33,933 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 455 flow. Second operand 8 states and 144 transitions. [2024-06-27 18:40:33,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 109 transitions, 804 flow [2024-06-27 18:40:33,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 109 transitions, 777 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:33,938 INFO L231 Difference]: Finished difference. Result has 80 places, 83 transitions, 589 flow [2024-06-27 18:40:33,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=589, PETRI_PLACES=80, PETRI_TRANSITIONS=83} [2024-06-27 18:40:33,939 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 39 predicate places. [2024-06-27 18:40:33,939 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 83 transitions, 589 flow [2024-06-27 18:40:33,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:33,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:33,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:33,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:40:33,940 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:33,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:33,940 INFO L85 PathProgramCache]: Analyzing trace with hash 2106171610, now seen corresponding path program 2 times [2024-06-27 18:40:33,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:33,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378964521] [2024-06-27 18:40:33,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:33,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:33,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:34,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:34,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378964521] [2024-06-27 18:40:34,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378964521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:34,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:34,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842449281] [2024-06-27 18:40:34,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:34,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:34,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:34,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:34,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:34,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 83 transitions, 589 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:34,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:34,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:34,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:34,793 INFO L124 PetriNetUnfolderBase]: 714/1325 cut-off events. [2024-06-27 18:40:34,793 INFO L125 PetriNetUnfolderBase]: For 5041/5044 co-relation queries the response was YES. [2024-06-27 18:40:34,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5043 conditions, 1325 events. 714/1325 cut-off events. For 5041/5044 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6950 event pairs, 224 based on Foata normal form. 5/1286 useless extension candidates. Maximal degree in co-relation 5006. Up to 1031 conditions per place. [2024-06-27 18:40:34,803 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 78 selfloop transitions, 44 changer transitions 0/130 dead transitions. [2024-06-27 18:40:34,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 130 transitions, 1129 flow [2024-06-27 18:40:34,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:34,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:40:34,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 18:40:34,805 INFO L175 Difference]: Start difference. First operand has 80 places, 83 transitions, 589 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:40:34,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 130 transitions, 1129 flow [2024-06-27 18:40:34,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 130 transitions, 1042 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:34,813 INFO L231 Difference]: Finished difference. Result has 88 places, 105 transitions, 857 flow [2024-06-27 18:40:34,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=857, PETRI_PLACES=88, PETRI_TRANSITIONS=105} [2024-06-27 18:40:34,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-27 18:40:34,814 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 105 transitions, 857 flow [2024-06-27 18:40:34,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:34,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:34,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:34,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:40:34,814 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:34,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:34,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1573688484, now seen corresponding path program 3 times [2024-06-27 18:40:34,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:34,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450961107] [2024-06-27 18:40:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:35,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:35,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450961107] [2024-06-27 18:40:35,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450961107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:35,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:35,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:35,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707768746] [2024-06-27 18:40:35,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:35,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:35,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:35,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:35,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:35,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:35,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 105 transitions, 857 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:35,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:35,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:35,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:35,731 INFO L124 PetriNetUnfolderBase]: 754/1387 cut-off events. [2024-06-27 18:40:35,731 INFO L125 PetriNetUnfolderBase]: For 6645/6648 co-relation queries the response was YES. [2024-06-27 18:40:35,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5703 conditions, 1387 events. 754/1387 cut-off events. For 6645/6648 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7313 event pairs, 215 based on Foata normal form. 5/1346 useless extension candidates. Maximal degree in co-relation 5662. Up to 1034 conditions per place. [2024-06-27 18:40:35,739 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 84 selfloop transitions, 50 changer transitions 0/142 dead transitions. [2024-06-27 18:40:35,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 142 transitions, 1371 flow [2024-06-27 18:40:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:35,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:40:35,741 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966216216216216 [2024-06-27 18:40:35,741 INFO L175 Difference]: Start difference. First operand has 88 places, 105 transitions, 857 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:40:35,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 142 transitions, 1371 flow [2024-06-27 18:40:35,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 142 transitions, 1320 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:35,751 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 1028 flow [2024-06-27 18:40:35,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1028, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2024-06-27 18:40:35,752 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 53 predicate places. [2024-06-27 18:40:35,752 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 1028 flow [2024-06-27 18:40:35,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:35,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:35,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:35,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:40:35,753 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:35,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:35,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1573688701, now seen corresponding path program 1 times [2024-06-27 18:40:35,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:35,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911883113] [2024-06-27 18:40:35,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:35,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:36,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:36,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:36,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911883113] [2024-06-27 18:40:36,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911883113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:36,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:36,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:36,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013911347] [2024-06-27 18:40:36,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:36,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:36,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:36,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:36,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:36,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 1028 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:36,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:36,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:36,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:36,621 INFO L124 PetriNetUnfolderBase]: 805/1455 cut-off events. [2024-06-27 18:40:36,621 INFO L125 PetriNetUnfolderBase]: For 8378/8378 co-relation queries the response was YES. [2024-06-27 18:40:36,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6371 conditions, 1455 events. 805/1455 cut-off events. For 8378/8378 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7573 event pairs, 299 based on Foata normal form. 1/1411 useless extension candidates. Maximal degree in co-relation 6328. Up to 1257 conditions per place. [2024-06-27 18:40:36,630 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 115 selfloop transitions, 20 changer transitions 0/141 dead transitions. [2024-06-27 18:40:36,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 141 transitions, 1433 flow [2024-06-27 18:40:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:36,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:36,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-27 18:40:36,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44256756756756754 [2024-06-27 18:40:36,631 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 1028 flow. Second operand 8 states and 131 transitions. [2024-06-27 18:40:36,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 141 transitions, 1433 flow [2024-06-27 18:40:36,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 141 transitions, 1337 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:36,643 INFO L231 Difference]: Finished difference. Result has 97 places, 116 transitions, 1000 flow [2024-06-27 18:40:36,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1000, PETRI_PLACES=97, PETRI_TRANSITIONS=116} [2024-06-27 18:40:36,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-27 18:40:36,644 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 116 transitions, 1000 flow [2024-06-27 18:40:36,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:36,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:36,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:36,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:40:36,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:36,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash -448727940, now seen corresponding path program 4 times [2024-06-27 18:40:36,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:36,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002632759] [2024-06-27 18:40:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:36,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002632759] [2024-06-27 18:40:37,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002632759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:37,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:37,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:37,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106713309] [2024-06-27 18:40:37,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:37,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:37,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:37,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:37,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:37,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:37,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 116 transitions, 1000 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:37,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:37,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:37,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:37,572 INFO L124 PetriNetUnfolderBase]: 791/1440 cut-off events. [2024-06-27 18:40:37,572 INFO L125 PetriNetUnfolderBase]: For 8713/8717 co-relation queries the response was YES. [2024-06-27 18:40:37,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6340 conditions, 1440 events. 791/1440 cut-off events. For 8713/8717 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7643 event pairs, 196 based on Foata normal form. 5/1396 useless extension candidates. Maximal degree in co-relation 6296. Up to 1103 conditions per place. [2024-06-27 18:40:37,585 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 82 selfloop transitions, 50 changer transitions 0/141 dead transitions. [2024-06-27 18:40:37,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 141 transitions, 1400 flow [2024-06-27 18:40:37,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:37,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 18:40:37,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 18:40:37,587 INFO L175 Difference]: Start difference. First operand has 97 places, 116 transitions, 1000 flow. Second operand 7 states and 128 transitions. [2024-06-27 18:40:37,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 141 transitions, 1400 flow [2024-06-27 18:40:37,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 141 transitions, 1354 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:37,602 INFO L231 Difference]: Finished difference. Result has 98 places, 119 transitions, 1112 flow [2024-06-27 18:40:37,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1112, PETRI_PLACES=98, PETRI_TRANSITIONS=119} [2024-06-27 18:40:37,603 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 57 predicate places. [2024-06-27 18:40:37,603 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 119 transitions, 1112 flow [2024-06-27 18:40:37,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:37,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:37,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:40:37,604 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:37,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:37,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1241475647, now seen corresponding path program 2 times [2024-06-27 18:40:37,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:37,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932940485] [2024-06-27 18:40:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:37,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:38,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:38,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:38,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932940485] [2024-06-27 18:40:38,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932940485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:38,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:38,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:38,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720327785] [2024-06-27 18:40:38,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:38,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:38,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:38,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:38,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:38,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 119 transitions, 1112 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:38,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:38,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:38,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:38,576 INFO L124 PetriNetUnfolderBase]: 838/1505 cut-off events. [2024-06-27 18:40:38,576 INFO L125 PetriNetUnfolderBase]: For 10341/10341 co-relation queries the response was YES. [2024-06-27 18:40:38,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6981 conditions, 1505 events. 838/1505 cut-off events. For 10341/10341 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7870 event pairs, 293 based on Foata normal form. 1/1461 useless extension candidates. Maximal degree in co-relation 6936. Up to 1284 conditions per place. [2024-06-27 18:40:38,584 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 116 selfloop transitions, 22 changer transitions 0/144 dead transitions. [2024-06-27 18:40:38,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 144 transitions, 1529 flow [2024-06-27 18:40:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 18:40:38,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2024-06-27 18:40:38,585 INFO L175 Difference]: Start difference. First operand has 98 places, 119 transitions, 1112 flow. Second operand 7 states and 116 transitions. [2024-06-27 18:40:38,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 144 transitions, 1529 flow [2024-06-27 18:40:38,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 144 transitions, 1435 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:38,599 INFO L231 Difference]: Finished difference. Result has 100 places, 121 transitions, 1093 flow [2024-06-27 18:40:38,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1093, PETRI_PLACES=100, PETRI_TRANSITIONS=121} [2024-06-27 18:40:38,600 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 59 predicate places. [2024-06-27 18:40:38,600 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 1093 flow [2024-06-27 18:40:38,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:38,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:38,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:38,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:40:38,601 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:38,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:38,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1241475864, now seen corresponding path program 5 times [2024-06-27 18:40:38,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:38,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099810319] [2024-06-27 18:40:38,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:38,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:38,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:39,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:39,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:39,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099810319] [2024-06-27 18:40:39,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099810319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:39,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:39,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:39,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298888616] [2024-06-27 18:40:39,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:39,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:39,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:39,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:39,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:39,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 1093 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:39,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:39,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:39,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:39,506 INFO L124 PetriNetUnfolderBase]: 830/1500 cut-off events. [2024-06-27 18:40:39,506 INFO L125 PetriNetUnfolderBase]: For 11588/11594 co-relation queries the response was YES. [2024-06-27 18:40:39,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7113 conditions, 1500 events. 830/1500 cut-off events. For 11588/11594 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 7933 event pairs, 185 based on Foata normal form. 8/1461 useless extension candidates. Maximal degree in co-relation 7067. Up to 1079 conditions per place. [2024-06-27 18:40:39,515 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 56 changer transitions 0/153 dead transitions. [2024-06-27 18:40:39,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 153 transitions, 1636 flow [2024-06-27 18:40:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 18:40:39,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 18:40:39,521 INFO L175 Difference]: Start difference. First operand has 100 places, 121 transitions, 1093 flow. Second operand 7 states and 128 transitions. [2024-06-27 18:40:39,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 153 transitions, 1636 flow [2024-06-27 18:40:39,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 153 transitions, 1576 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:39,541 INFO L231 Difference]: Finished difference. Result has 103 places, 130 transitions, 1316 flow [2024-06-27 18:40:39,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1316, PETRI_PLACES=103, PETRI_TRANSITIONS=130} [2024-06-27 18:40:39,542 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 62 predicate places. [2024-06-27 18:40:39,542 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 130 transitions, 1316 flow [2024-06-27 18:40:39,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:39,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:39,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:39,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:40:39,543 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:39,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash -270552960, now seen corresponding path program 6 times [2024-06-27 18:40:39,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:39,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647607561] [2024-06-27 18:40:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:39,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:40,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647607561] [2024-06-27 18:40:40,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647607561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:40,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:40,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:40,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32041709] [2024-06-27 18:40:40,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:40,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:40,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:40,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:40,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 130 transitions, 1316 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:40,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:40,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:40,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:40,493 INFO L124 PetriNetUnfolderBase]: 819/1506 cut-off events. [2024-06-27 18:40:40,493 INFO L125 PetriNetUnfolderBase]: For 12697/12701 co-relation queries the response was YES. [2024-06-27 18:40:40,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7417 conditions, 1506 events. 819/1506 cut-off events. For 12697/12701 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8096 event pairs, 176 based on Foata normal form. 6/1457 useless extension candidates. Maximal degree in co-relation 7369. Up to 1025 conditions per place. [2024-06-27 18:40:40,503 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 91 selfloop transitions, 67 changer transitions 0/168 dead transitions. [2024-06-27 18:40:40,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 168 transitions, 1971 flow [2024-06-27 18:40:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:40,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:40,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:40:40,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:40:40,504 INFO L175 Difference]: Start difference. First operand has 103 places, 130 transitions, 1316 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:40:40,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 168 transitions, 1971 flow [2024-06-27 18:40:40,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 168 transitions, 1883 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:40,525 INFO L231 Difference]: Finished difference. Result has 109 places, 144 transitions, 1605 flow [2024-06-27 18:40:40,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1245, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1605, PETRI_PLACES=109, PETRI_TRANSITIONS=144} [2024-06-27 18:40:40,526 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-27 18:40:40,526 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 144 transitions, 1605 flow [2024-06-27 18:40:40,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:40,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:40,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:40,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:40:40,528 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:40,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:40,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1777541203, now seen corresponding path program 3 times [2024-06-27 18:40:40,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:40,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576258876] [2024-06-27 18:40:40,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:40,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:41,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576258876] [2024-06-27 18:40:41,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576258876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:41,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:41,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8490492] [2024-06-27 18:40:41,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:41,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:41,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:41,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:41,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 144 transitions, 1605 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:41,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:41,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:41,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:41,482 INFO L124 PetriNetUnfolderBase]: 888/1593 cut-off events. [2024-06-27 18:40:41,482 INFO L125 PetriNetUnfolderBase]: For 13950/13950 co-relation queries the response was YES. [2024-06-27 18:40:41,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8301 conditions, 1593 events. 888/1593 cut-off events. For 13950/13950 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8412 event pairs, 278 based on Foata normal form. 1/1544 useless extension candidates. Maximal degree in co-relation 8250. Up to 1297 conditions per place. [2024-06-27 18:40:41,492 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 140 selfloop transitions, 30 changer transitions 0/176 dead transitions. [2024-06-27 18:40:41,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 176 transitions, 2224 flow [2024-06-27 18:40:41,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 18:40:41,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-27 18:40:41,495 INFO L175 Difference]: Start difference. First operand has 109 places, 144 transitions, 1605 flow. Second operand 7 states and 120 transitions. [2024-06-27 18:40:41,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 176 transitions, 2224 flow [2024-06-27 18:40:41,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 176 transitions, 2146 flow, removed 38 selfloop flow, removed 1 redundant places. [2024-06-27 18:40:41,515 INFO L231 Difference]: Finished difference. Result has 115 places, 148 transitions, 1651 flow [2024-06-27 18:40:41,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1651, PETRI_PLACES=115, PETRI_TRANSITIONS=148} [2024-06-27 18:40:41,516 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 74 predicate places. [2024-06-27 18:40:41,516 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 148 transitions, 1651 flow [2024-06-27 18:40:41,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:41,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:41,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:41,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:40:41,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:41,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:41,517 INFO L85 PathProgramCache]: Analyzing trace with hash -270285833, now seen corresponding path program 4 times [2024-06-27 18:40:41,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:41,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783878578] [2024-06-27 18:40:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:41,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:42,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:42,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783878578] [2024-06-27 18:40:42,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783878578] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:42,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:42,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:40:42,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069639248] [2024-06-27 18:40:42,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:42,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:40:42,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:42,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:40:42,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:40:42,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:42,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 148 transitions, 1651 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:42,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:42,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:42,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:42,414 INFO L124 PetriNetUnfolderBase]: 886/1590 cut-off events. [2024-06-27 18:40:42,414 INFO L125 PetriNetUnfolderBase]: For 14624/14624 co-relation queries the response was YES. [2024-06-27 18:40:42,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8413 conditions, 1590 events. 886/1590 cut-off events. For 14624/14624 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8384 event pairs, 276 based on Foata normal form. 1/1541 useless extension candidates. Maximal degree in co-relation 8359. Up to 1295 conditions per place. [2024-06-27 18:40:42,423 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 134 selfloop transitions, 34 changer transitions 0/174 dead transitions. [2024-06-27 18:40:42,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 174 transitions, 2166 flow [2024-06-27 18:40:42,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 18:40:42,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-06-27 18:40:42,425 INFO L175 Difference]: Start difference. First operand has 115 places, 148 transitions, 1651 flow. Second operand 7 states and 118 transitions. [2024-06-27 18:40:42,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 174 transitions, 2166 flow [2024-06-27 18:40:42,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 174 transitions, 2108 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:42,448 INFO L231 Difference]: Finished difference. Result has 119 places, 148 transitions, 1666 flow [2024-06-27 18:40:42,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1666, PETRI_PLACES=119, PETRI_TRANSITIONS=148} [2024-06-27 18:40:42,449 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 78 predicate places. [2024-06-27 18:40:42,449 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 148 transitions, 1666 flow [2024-06-27 18:40:42,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:42,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:42,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:42,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:40:42,451 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:42,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:42,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1188544373, now seen corresponding path program 1 times [2024-06-27 18:40:42,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:42,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877735776] [2024-06-27 18:40:42,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:42,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:43,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:43,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:43,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877735776] [2024-06-27 18:40:43,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877735776] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:43,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:43,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:43,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375292413] [2024-06-27 18:40:43,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:43,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:43,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:43,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:43,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:43,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:43,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 148 transitions, 1666 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:43,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:43,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:43,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:43,566 INFO L124 PetriNetUnfolderBase]: 873/1597 cut-off events. [2024-06-27 18:40:43,566 INFO L125 PetriNetUnfolderBase]: For 15347/15359 co-relation queries the response was YES. [2024-06-27 18:40:43,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8547 conditions, 1597 events. 873/1597 cut-off events. For 15347/15359 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8677 event pairs, 256 based on Foata normal form. 7/1548 useless extension candidates. Maximal degree in co-relation 8491. Up to 1248 conditions per place. [2024-06-27 18:40:43,578 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 114 selfloop transitions, 60 changer transitions 0/186 dead transitions. [2024-06-27 18:40:43,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 186 transitions, 2301 flow [2024-06-27 18:40:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:43,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:40:43,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 18:40:43,581 INFO L175 Difference]: Start difference. First operand has 119 places, 148 transitions, 1666 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:40:43,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 186 transitions, 2301 flow [2024-06-27 18:40:43,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 186 transitions, 2223 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:43,610 INFO L231 Difference]: Finished difference. Result has 123 places, 162 transitions, 1960 flow [2024-06-27 18:40:43,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1960, PETRI_PLACES=123, PETRI_TRANSITIONS=162} [2024-06-27 18:40:43,611 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 82 predicate places. [2024-06-27 18:40:43,611 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 162 transitions, 1960 flow [2024-06-27 18:40:43,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:43,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:43,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:43,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:40:43,612 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:43,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:43,612 INFO L85 PathProgramCache]: Analyzing trace with hash -987212635, now seen corresponding path program 1 times [2024-06-27 18:40:43,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:43,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803699153] [2024-06-27 18:40:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:44,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:44,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803699153] [2024-06-27 18:40:44,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803699153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:44,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:44,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:44,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135440326] [2024-06-27 18:40:44,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:44,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:44,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:44,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:44,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:44,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 162 transitions, 1960 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:44,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:44,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:44,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:44,633 INFO L124 PetriNetUnfolderBase]: 929/1669 cut-off events. [2024-06-27 18:40:44,634 INFO L125 PetriNetUnfolderBase]: For 17384/17384 co-relation queries the response was YES. [2024-06-27 18:40:44,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9288 conditions, 1669 events. 929/1669 cut-off events. For 17384/17384 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8891 event pairs, 220 based on Foata normal form. 2/1615 useless extension candidates. Maximal degree in co-relation 9229. Up to 1336 conditions per place. [2024-06-27 18:40:44,644 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 129 selfloop transitions, 59 changer transitions 0/194 dead transitions. [2024-06-27 18:40:44,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 194 transitions, 2518 flow [2024-06-27 18:40:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:44,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:44,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:40:44,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:40:44,646 INFO L175 Difference]: Start difference. First operand has 123 places, 162 transitions, 1960 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:40:44,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 194 transitions, 2518 flow [2024-06-27 18:40:44,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 194 transitions, 2444 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:40:44,679 INFO L231 Difference]: Finished difference. Result has 129 places, 165 transitions, 2053 flow [2024-06-27 18:40:44,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2053, PETRI_PLACES=129, PETRI_TRANSITIONS=165} [2024-06-27 18:40:44,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 88 predicate places. [2024-06-27 18:40:44,680 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 165 transitions, 2053 flow [2024-06-27 18:40:44,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:44,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:44,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:44,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:40:44,681 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:44,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:44,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1651386963, now seen corresponding path program 2 times [2024-06-27 18:40:44,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:44,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234001481] [2024-06-27 18:40:44,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:44,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:45,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:45,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234001481] [2024-06-27 18:40:45,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234001481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:45,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:45,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:45,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15922392] [2024-06-27 18:40:45,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:45,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:45,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:45,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:45,373 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:45,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 165 transitions, 2053 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:45,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:45,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:45,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:45,779 INFO L124 PetriNetUnfolderBase]: 904/1639 cut-off events. [2024-06-27 18:40:45,780 INFO L125 PetriNetUnfolderBase]: For 19645/19658 co-relation queries the response was YES. [2024-06-27 18:40:45,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9465 conditions, 1639 events. 904/1639 cut-off events. For 19645/19658 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8824 event pairs, 227 based on Foata normal form. 11/1594 useless extension candidates. Maximal degree in co-relation 9405. Up to 1265 conditions per place. [2024-06-27 18:40:45,790 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 129 selfloop transitions, 60 changer transitions 0/202 dead transitions. [2024-06-27 18:40:45,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 202 transitions, 2755 flow [2024-06-27 18:40:45,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:40:45,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 18:40:45,791 INFO L175 Difference]: Start difference. First operand has 129 places, 165 transitions, 2053 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:40:45,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 202 transitions, 2755 flow [2024-06-27 18:40:45,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 202 transitions, 2582 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:45,820 INFO L231 Difference]: Finished difference. Result has 130 places, 176 transitions, 2227 flow [2024-06-27 18:40:45,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1898, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2227, PETRI_PLACES=130, PETRI_TRANSITIONS=176} [2024-06-27 18:40:45,821 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 18:40:45,821 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 176 transitions, 2227 flow [2024-06-27 18:40:45,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:45,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:45,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:40:45,822 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:45,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1539531399, now seen corresponding path program 2 times [2024-06-27 18:40:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949749827] [2024-06-27 18:40:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:46,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:46,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:46,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949749827] [2024-06-27 18:40:46,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949749827] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:46,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:46,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:46,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175248561] [2024-06-27 18:40:46,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:46,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:46,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:46,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:46,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:46,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 176 transitions, 2227 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:46,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:46,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:46,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:46,806 INFO L124 PetriNetUnfolderBase]: 977/1738 cut-off events. [2024-06-27 18:40:46,806 INFO L125 PetriNetUnfolderBase]: For 20800/20800 co-relation queries the response was YES. [2024-06-27 18:40:46,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9945 conditions, 1738 events. 977/1738 cut-off events. For 20800/20800 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9227 event pairs, 255 based on Foata normal form. 2/1685 useless extension candidates. Maximal degree in co-relation 9884. Up to 1397 conditions per place. [2024-06-27 18:40:46,819 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 141 selfloop transitions, 64 changer transitions 0/211 dead transitions. [2024-06-27 18:40:46,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 211 transitions, 2838 flow [2024-06-27 18:40:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:40:46,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:40:46,822 INFO L175 Difference]: Start difference. First operand has 130 places, 176 transitions, 2227 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:40:46,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 211 transitions, 2838 flow [2024-06-27 18:40:46,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 211 transitions, 2763 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:46,851 INFO L231 Difference]: Finished difference. Result has 135 places, 182 transitions, 2356 flow [2024-06-27 18:40:46,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2356, PETRI_PLACES=135, PETRI_TRANSITIONS=182} [2024-06-27 18:40:46,852 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 94 predicate places. [2024-06-27 18:40:46,852 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 182 transitions, 2356 flow [2024-06-27 18:40:46,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:46,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:46,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:46,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:40:46,853 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:46,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1539711137, now seen corresponding path program 1 times [2024-06-27 18:40:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:46,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122288562] [2024-06-27 18:40:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:46,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:47,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:47,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122288562] [2024-06-27 18:40:47,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122288562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:47,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:47,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:47,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534297810] [2024-06-27 18:40:47,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:47,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:47,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:47,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:47,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:47,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:47,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 182 transitions, 2356 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:47,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:47,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:47,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:47,839 INFO L124 PetriNetUnfolderBase]: 990/1766 cut-off events. [2024-06-27 18:40:47,839 INFO L125 PetriNetUnfolderBase]: For 23220/23220 co-relation queries the response was YES. [2024-06-27 18:40:47,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10324 conditions, 1766 events. 990/1766 cut-off events. For 23220/23220 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9489 event pairs, 326 based on Foata normal form. 1/1712 useless extension candidates. Maximal degree in co-relation 10262. Up to 1524 conditions per place. [2024-06-27 18:40:47,851 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 187 selfloop transitions, 22 changer transitions 0/215 dead transitions. [2024-06-27 18:40:47,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 215 transitions, 2993 flow [2024-06-27 18:40:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:47,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:40:47,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:40:47,852 INFO L175 Difference]: Start difference. First operand has 135 places, 182 transitions, 2356 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:40:47,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 215 transitions, 2993 flow [2024-06-27 18:40:47,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 215 transitions, 2843 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:47,892 INFO L231 Difference]: Finished difference. Result has 137 places, 184 transitions, 2279 flow [2024-06-27 18:40:47,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2206, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2279, PETRI_PLACES=137, PETRI_TRANSITIONS=184} [2024-06-27 18:40:47,893 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-27 18:40:47,894 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 184 transitions, 2279 flow [2024-06-27 18:40:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:47,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:47,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:40:47,894 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:47,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1092211551, now seen corresponding path program 3 times [2024-06-27 18:40:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699753989] [2024-06-27 18:40:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:48,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:48,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:48,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699753989] [2024-06-27 18:40:48,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699753989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:48,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:48,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:48,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591195928] [2024-06-27 18:40:48,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:48,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:48,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:48,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:48,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 184 transitions, 2279 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:48,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:48,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:48,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:48,903 INFO L124 PetriNetUnfolderBase]: 1036/1834 cut-off events. [2024-06-27 18:40:48,903 INFO L125 PetriNetUnfolderBase]: For 24476/24476 co-relation queries the response was YES. [2024-06-27 18:40:48,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10814 conditions, 1834 events. 1036/1834 cut-off events. For 24476/24476 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 9856 event pairs, 227 based on Foata normal form. 2/1778 useless extension candidates. Maximal degree in co-relation 10751. Up to 1320 conditions per place. [2024-06-27 18:40:48,915 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 130 selfloop transitions, 89 changer transitions 0/225 dead transitions. [2024-06-27 18:40:48,916 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 225 transitions, 3073 flow [2024-06-27 18:40:48,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:48,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:48,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:40:48,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 18:40:48,917 INFO L175 Difference]: Start difference. First operand has 137 places, 184 transitions, 2279 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:40:48,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 225 transitions, 3073 flow [2024-06-27 18:40:48,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 225 transitions, 3013 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:48,957 INFO L231 Difference]: Finished difference. Result has 140 places, 193 transitions, 2575 flow [2024-06-27 18:40:48,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2575, PETRI_PLACES=140, PETRI_TRANSITIONS=193} [2024-06-27 18:40:48,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 18:40:48,958 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 193 transitions, 2575 flow [2024-06-27 18:40:48,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:48,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:48,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:48,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:40:48,959 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:48,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:48,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1092205041, now seen corresponding path program 4 times [2024-06-27 18:40:48,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:48,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914946243] [2024-06-27 18:40:48,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:48,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:49,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:49,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914946243] [2024-06-27 18:40:49,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914946243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:49,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:49,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805913821] [2024-06-27 18:40:49,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:49,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:49,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:49,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:49,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 193 transitions, 2575 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:49,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:49,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:49,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:50,118 INFO L124 PetriNetUnfolderBase]: 1046/1842 cut-off events. [2024-06-27 18:40:50,118 INFO L125 PetriNetUnfolderBase]: For 27558/27558 co-relation queries the response was YES. [2024-06-27 18:40:50,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11428 conditions, 1842 events. 1046/1842 cut-off events. For 27558/27558 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9819 event pairs, 252 based on Foata normal form. 2/1788 useless extension candidates. Maximal degree in co-relation 11363. Up to 1332 conditions per place. [2024-06-27 18:40:50,129 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 136 selfloop transitions, 86 changer transitions 0/228 dead transitions. [2024-06-27 18:40:50,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 228 transitions, 3299 flow [2024-06-27 18:40:50,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:40:50,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2024-06-27 18:40:50,130 INFO L175 Difference]: Start difference. First operand has 140 places, 193 transitions, 2575 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:40:50,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 228 transitions, 3299 flow [2024-06-27 18:40:50,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 228 transitions, 3148 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:50,171 INFO L231 Difference]: Finished difference. Result has 144 places, 196 transitions, 2659 flow [2024-06-27 18:40:50,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2430, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2659, PETRI_PLACES=144, PETRI_TRANSITIONS=196} [2024-06-27 18:40:50,171 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 103 predicate places. [2024-06-27 18:40:50,171 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 196 transitions, 2659 flow [2024-06-27 18:40:50,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:50,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:50,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:50,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:40:50,172 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:50,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:50,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1025667457, now seen corresponding path program 3 times [2024-06-27 18:40:50,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:50,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720322025] [2024-06-27 18:40:50,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:50,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720322025] [2024-06-27 18:40:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720322025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:50,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:50,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900765828] [2024-06-27 18:40:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:50,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:50,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:50,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:40:50,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 196 transitions, 2659 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:50,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:50,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:40:50,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:51,395 INFO L124 PetriNetUnfolderBase]: 986/1769 cut-off events. [2024-06-27 18:40:51,395 INFO L125 PetriNetUnfolderBase]: For 28813/28863 co-relation queries the response was YES. [2024-06-27 18:40:51,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11169 conditions, 1769 events. 986/1769 cut-off events. For 28813/28863 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9653 event pairs, 255 based on Foata normal form. 15/1731 useless extension candidates. Maximal degree in co-relation 11102. Up to 1316 conditions per place. [2024-06-27 18:40:51,406 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 131 selfloop transitions, 71 changer transitions 0/221 dead transitions. [2024-06-27 18:40:51,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 221 transitions, 3250 flow [2024-06-27 18:40:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:40:51,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:40:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 18:40:51,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-27 18:40:51,409 INFO L175 Difference]: Start difference. First operand has 144 places, 196 transitions, 2659 flow. Second operand 7 states and 127 transitions. [2024-06-27 18:40:51,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 221 transitions, 3250 flow [2024-06-27 18:40:51,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 221 transitions, 3058 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:51,461 INFO L231 Difference]: Finished difference. Result has 145 places, 200 transitions, 2742 flow [2024-06-27 18:40:51,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2474, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2742, PETRI_PLACES=145, PETRI_TRANSITIONS=200} [2024-06-27 18:40:51,461 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 18:40:51,462 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 200 transitions, 2742 flow [2024-06-27 18:40:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:51,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:51,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:51,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:40:51,462 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:51,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:51,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1101373017, now seen corresponding path program 1 times [2024-06-27 18:40:51,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:51,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692425698] [2024-06-27 18:40:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:51,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:52,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:52,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692425698] [2024-06-27 18:40:52,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692425698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:52,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:52,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:40:52,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776344329] [2024-06-27 18:40:52,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:52,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:40:52,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:52,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:40:52,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:40:52,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:52,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 200 transitions, 2742 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:52,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:52,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:52,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:52,624 INFO L124 PetriNetUnfolderBase]: 1064/1857 cut-off events. [2024-06-27 18:40:52,624 INFO L125 PetriNetUnfolderBase]: For 29757/29757 co-relation queries the response was YES. [2024-06-27 18:40:52,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11698 conditions, 1857 events. 1064/1857 cut-off events. For 29757/29757 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 9834 event pairs, 262 based on Foata normal form. 2/1808 useless extension candidates. Maximal degree in co-relation 11630. Up to 1499 conditions per place. [2024-06-27 18:40:52,641 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 164 selfloop transitions, 67 changer transitions 0/237 dead transitions. [2024-06-27 18:40:52,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 237 transitions, 3431 flow [2024-06-27 18:40:52,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:40:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:40:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:40:52,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:40:52,643 INFO L175 Difference]: Start difference. First operand has 145 places, 200 transitions, 2742 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:40:52,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 237 transitions, 3431 flow [2024-06-27 18:40:52,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 237 transitions, 3309 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:52,704 INFO L231 Difference]: Finished difference. Result has 150 places, 203 transitions, 2811 flow [2024-06-27 18:40:52,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2620, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2811, PETRI_PLACES=150, PETRI_TRANSITIONS=203} [2024-06-27 18:40:52,705 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 109 predicate places. [2024-06-27 18:40:52,705 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 203 transitions, 2811 flow [2024-06-27 18:40:52,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:52,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:52,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:52,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:40:52,705 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:52,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash 165207611, now seen corresponding path program 5 times [2024-06-27 18:40:52,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:52,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798651756] [2024-06-27 18:40:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:52,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:53,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:53,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798651756] [2024-06-27 18:40:53,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798651756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:53,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:53,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:53,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927540345] [2024-06-27 18:40:53,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:53,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:53,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:53,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:53,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 203 transitions, 2811 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:53,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:53,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:53,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:53,704 INFO L124 PetriNetUnfolderBase]: 1084/1889 cut-off events. [2024-06-27 18:40:53,704 INFO L125 PetriNetUnfolderBase]: For 29787/29787 co-relation queries the response was YES. [2024-06-27 18:40:53,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12045 conditions, 1889 events. 1084/1889 cut-off events. For 29787/29787 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10066 event pairs, 225 based on Foata normal form. 2/1840 useless extension candidates. Maximal degree in co-relation 11976. Up to 1477 conditions per place. [2024-06-27 18:40:53,717 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 150 selfloop transitions, 76 changer transitions 0/232 dead transitions. [2024-06-27 18:40:53,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 232 transitions, 3459 flow [2024-06-27 18:40:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:53,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:40:53,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:40:53,719 INFO L175 Difference]: Start difference. First operand has 150 places, 203 transitions, 2811 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:40:53,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 232 transitions, 3459 flow [2024-06-27 18:40:53,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 232 transitions, 3309 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:53,777 INFO L231 Difference]: Finished difference. Result has 152 places, 206 transitions, 2895 flow [2024-06-27 18:40:53,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2661, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2895, PETRI_PLACES=152, PETRI_TRANSITIONS=206} [2024-06-27 18:40:53,778 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 111 predicate places. [2024-06-27 18:40:53,778 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 206 transitions, 2895 flow [2024-06-27 18:40:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:53,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:53,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:53,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:40:53,779 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:53,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:53,790 INFO L85 PathProgramCache]: Analyzing trace with hash 843351441, now seen corresponding path program 6 times [2024-06-27 18:40:53,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:53,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861775336] [2024-06-27 18:40:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:53,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:54,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:54,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861775336] [2024-06-27 18:40:54,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861775336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:54,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:54,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:54,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529235080] [2024-06-27 18:40:54,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:54,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:54,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:54,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:54,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:54,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:54,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 206 transitions, 2895 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:54,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:54,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:54,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:54,820 INFO L124 PetriNetUnfolderBase]: 1144/1980 cut-off events. [2024-06-27 18:40:54,821 INFO L125 PetriNetUnfolderBase]: For 35613/35613 co-relation queries the response was YES. [2024-06-27 18:40:54,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13121 conditions, 1980 events. 1144/1980 cut-off events. For 35613/35613 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10615 event pairs, 229 based on Foata normal form. 2/1929 useless extension candidates. Maximal degree in co-relation 13051. Up to 1331 conditions per place. [2024-06-27 18:40:54,834 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 134 selfloop transitions, 106 changer transitions 0/246 dead transitions. [2024-06-27 18:40:54,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 246 transitions, 3861 flow [2024-06-27 18:40:54,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:40:54,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 18:40:54,853 INFO L175 Difference]: Start difference. First operand has 152 places, 206 transitions, 2895 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:40:54,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 246 transitions, 3861 flow [2024-06-27 18:40:54,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 246 transitions, 3691 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:40:54,914 INFO L231 Difference]: Finished difference. Result has 155 places, 218 transitions, 3250 flow [2024-06-27 18:40:54,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2725, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3250, PETRI_PLACES=155, PETRI_TRANSITIONS=218} [2024-06-27 18:40:54,914 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 114 predicate places. [2024-06-27 18:40:54,915 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 218 transitions, 3250 flow [2024-06-27 18:40:54,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:54,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:54,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:40:54,915 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:54,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -54832229, now seen corresponding path program 2 times [2024-06-27 18:40:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:54,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018942396] [2024-06-27 18:40:54,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:54,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:55,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018942396] [2024-06-27 18:40:55,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018942396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:55,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539094128] [2024-06-27 18:40:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:55,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:55,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:55,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:55,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:55,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:55,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 218 transitions, 3250 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:55,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:55,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:55,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:56,021 INFO L124 PetriNetUnfolderBase]: 1157/2011 cut-off events. [2024-06-27 18:40:56,021 INFO L125 PetriNetUnfolderBase]: For 39679/39679 co-relation queries the response was YES. [2024-06-27 18:40:56,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13820 conditions, 2011 events. 1157/2011 cut-off events. For 39679/39679 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10842 event pairs, 345 based on Foata normal form. 1/1959 useless extension candidates. Maximal degree in co-relation 13748. Up to 1739 conditions per place. [2024-06-27 18:40:56,036 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 212 selfloop transitions, 32 changer transitions 0/250 dead transitions. [2024-06-27 18:40:56,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 250 transitions, 4021 flow [2024-06-27 18:40:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:40:56,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:40:56,037 INFO L175 Difference]: Start difference. First operand has 155 places, 218 transitions, 3250 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:40:56,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 250 transitions, 4021 flow [2024-06-27 18:40:56,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 250 transitions, 3907 flow, removed 33 selfloop flow, removed 4 redundant places. [2024-06-27 18:40:56,180 INFO L231 Difference]: Finished difference. Result has 159 places, 220 transitions, 3246 flow [2024-06-27 18:40:56,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3138, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3246, PETRI_PLACES=159, PETRI_TRANSITIONS=220} [2024-06-27 18:40:56,181 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 118 predicate places. [2024-06-27 18:40:56,181 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 220 transitions, 3246 flow [2024-06-27 18:40:56,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:56,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:56,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:56,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:40:56,181 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:56,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:56,182 INFO L85 PathProgramCache]: Analyzing trace with hash -25100177, now seen corresponding path program 7 times [2024-06-27 18:40:56,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:56,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132547002] [2024-06-27 18:40:56,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:56,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:56,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:56,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132547002] [2024-06-27 18:40:56,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132547002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:56,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:56,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323105242] [2024-06-27 18:40:56,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:56,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:56,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:56,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:56,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:56,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:56,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 220 transitions, 3246 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:56,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:56,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:56,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:57,265 INFO L124 PetriNetUnfolderBase]: 1153/1994 cut-off events. [2024-06-27 18:40:57,266 INFO L125 PetriNetUnfolderBase]: For 36827/36827 co-relation queries the response was YES. [2024-06-27 18:40:57,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13656 conditions, 1994 events. 1153/1994 cut-off events. For 36827/36827 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10668 event pairs, 203 based on Foata normal form. 2/1943 useless extension candidates. Maximal degree in co-relation 13583. Up to 1348 conditions per place. [2024-06-27 18:40:57,280 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 126 selfloop transitions, 115 changer transitions 0/247 dead transitions. [2024-06-27 18:40:57,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 247 transitions, 3936 flow [2024-06-27 18:40:57,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:57,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:57,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:40:57,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 18:40:57,284 INFO L175 Difference]: Start difference. First operand has 159 places, 220 transitions, 3246 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:40:57,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 247 transitions, 3936 flow [2024-06-27 18:40:57,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 247 transitions, 3808 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:57,355 INFO L231 Difference]: Finished difference. Result has 160 places, 220 transitions, 3360 flow [2024-06-27 18:40:57,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3360, PETRI_PLACES=160, PETRI_TRANSITIONS=220} [2024-06-27 18:40:57,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-27 18:40:57,355 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 220 transitions, 3360 flow [2024-06-27 18:40:57,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:57,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:57,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:57,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:40:57,356 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:57,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:57,357 INFO L85 PathProgramCache]: Analyzing trace with hash 202800973, now seen corresponding path program 8 times [2024-06-27 18:40:57,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:57,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041841469] [2024-06-27 18:40:57,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:57,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:58,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:58,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:58,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041841469] [2024-06-27 18:40:58,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041841469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:58,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:58,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:58,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957931889] [2024-06-27 18:40:58,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:58,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:58,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:58,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:58,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:58,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:58,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 220 transitions, 3360 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:58,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:58,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:58,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:58,516 INFO L124 PetriNetUnfolderBase]: 1199/2078 cut-off events. [2024-06-27 18:40:58,516 INFO L125 PetriNetUnfolderBase]: For 40759/40759 co-relation queries the response was YES. [2024-06-27 18:40:58,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14504 conditions, 2078 events. 1199/2078 cut-off events. For 40759/40759 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11260 event pairs, 236 based on Foata normal form. 2/2019 useless extension candidates. Maximal degree in co-relation 14430. Up to 1282 conditions per place. [2024-06-27 18:40:58,529 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 141 selfloop transitions, 124 changer transitions 0/271 dead transitions. [2024-06-27 18:40:58,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 271 transitions, 4582 flow [2024-06-27 18:40:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:40:58,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:40:58,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:40:58,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:40:58,531 INFO L175 Difference]: Start difference. First operand has 160 places, 220 transitions, 3360 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:40:58,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 271 transitions, 4582 flow [2024-06-27 18:40:58,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 271 transitions, 4358 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:58,612 INFO L231 Difference]: Finished difference. Result has 165 places, 238 transitions, 3819 flow [2024-06-27 18:40:58,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3142, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3819, PETRI_PLACES=165, PETRI_TRANSITIONS=238} [2024-06-27 18:40:58,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 124 predicate places. [2024-06-27 18:40:58,613 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 238 transitions, 3819 flow [2024-06-27 18:40:58,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:58,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:58,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:58,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:40:58,613 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:58,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash 202801221, now seen corresponding path program 3 times [2024-06-27 18:40:58,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:58,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583256849] [2024-06-27 18:40:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:58,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:59,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:40:59,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:59,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583256849] [2024-06-27 18:40:59,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583256849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:59,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:59,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:40:59,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772686103] [2024-06-27 18:40:59,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:59,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:40:59,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:40:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:40:59,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:59,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 238 transitions, 3819 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:59,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:59,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:59,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:59,653 INFO L124 PetriNetUnfolderBase]: 1217/2096 cut-off events. [2024-06-27 18:40:59,653 INFO L125 PetriNetUnfolderBase]: For 44469/44469 co-relation queries the response was YES. [2024-06-27 18:40:59,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15374 conditions, 2096 events. 1217/2096 cut-off events. For 44469/44469 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 11327 event pairs, 328 based on Foata normal form. 1/2045 useless extension candidates. Maximal degree in co-relation 15297. Up to 1721 conditions per place. [2024-06-27 18:40:59,668 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 235 selfloop transitions, 41 changer transitions 0/282 dead transitions. [2024-06-27 18:40:59,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 282 transitions, 4943 flow [2024-06-27 18:40:59,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:40:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:40:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:40:59,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:40:59,673 INFO L175 Difference]: Start difference. First operand has 165 places, 238 transitions, 3819 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:40:59,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 282 transitions, 4943 flow [2024-06-27 18:40:59,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 282 transitions, 4823 flow, removed 56 selfloop flow, removed 2 redundant places. [2024-06-27 18:40:59,760 INFO L231 Difference]: Finished difference. Result has 172 places, 244 transitions, 3914 flow [2024-06-27 18:40:59,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3715, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3914, PETRI_PLACES=172, PETRI_TRANSITIONS=244} [2024-06-27 18:40:59,761 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 131 predicate places. [2024-06-27 18:40:59,761 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 244 transitions, 3914 flow [2024-06-27 18:40:59,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:59,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:59,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:40:59,761 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:40:59,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1544686897, now seen corresponding path program 9 times [2024-06-27 18:40:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:59,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849743724] [2024-06-27 18:40:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:59,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:00,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849743724] [2024-06-27 18:41:00,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849743724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:00,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:00,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549710093] [2024-06-27 18:41:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:00,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:00,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 244 transitions, 3914 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:00,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:00,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:00,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:00,934 INFO L124 PetriNetUnfolderBase]: 1213/2100 cut-off events. [2024-06-27 18:41:00,934 INFO L125 PetriNetUnfolderBase]: For 43603/43603 co-relation queries the response was YES. [2024-06-27 18:41:00,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15355 conditions, 2100 events. 1213/2100 cut-off events. For 43603/43603 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11360 event pairs, 240 based on Foata normal form. 2/2041 useless extension candidates. Maximal degree in co-relation 15275. Up to 1307 conditions per place. [2024-06-27 18:41:00,948 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 143 selfloop transitions, 130 changer transitions 0/279 dead transitions. [2024-06-27 18:41:00,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 279 transitions, 4882 flow [2024-06-27 18:41:00,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:00,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:41:00,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:41:00,951 INFO L175 Difference]: Start difference. First operand has 172 places, 244 transitions, 3914 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:41:00,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 279 transitions, 4882 flow [2024-06-27 18:41:01,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 279 transitions, 4742 flow, removed 61 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:01,037 INFO L231 Difference]: Finished difference. Result has 179 places, 250 transitions, 4177 flow [2024-06-27 18:41:01,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3801, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4177, PETRI_PLACES=179, PETRI_TRANSITIONS=250} [2024-06-27 18:41:01,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 18:41:01,038 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 250 transitions, 4177 flow [2024-06-27 18:41:01,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:01,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:01,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:01,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:41:01,039 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:01,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash 211083801, now seen corresponding path program 4 times [2024-06-27 18:41:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243931263] [2024-06-27 18:41:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:01,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:01,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:01,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243931263] [2024-06-27 18:41:01,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243931263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:01,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:01,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:01,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758726272] [2024-06-27 18:41:01,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:01,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:01,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:01,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:01,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:01,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:01,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 250 transitions, 4177 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:01,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:01,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:01,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:02,206 INFO L124 PetriNetUnfolderBase]: 1226/2113 cut-off events. [2024-06-27 18:41:02,207 INFO L125 PetriNetUnfolderBase]: For 46536/46536 co-relation queries the response was YES. [2024-06-27 18:41:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15814 conditions, 2113 events. 1226/2113 cut-off events. For 46536/46536 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11451 event pairs, 322 based on Foata normal form. 1/2061 useless extension candidates. Maximal degree in co-relation 15731. Up to 1729 conditions per place. [2024-06-27 18:41:02,224 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 229 selfloop transitions, 54 changer transitions 0/289 dead transitions. [2024-06-27 18:41:02,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 289 transitions, 5230 flow [2024-06-27 18:41:02,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:02,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:41:02,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:41:02,226 INFO L175 Difference]: Start difference. First operand has 179 places, 250 transitions, 4177 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:41:02,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 289 transitions, 5230 flow [2024-06-27 18:41:02,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 289 transitions, 4927 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:02,356 INFO L231 Difference]: Finished difference. Result has 182 places, 252 transitions, 4048 flow [2024-06-27 18:41:02,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3905, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4048, PETRI_PLACES=182, PETRI_TRANSITIONS=252} [2024-06-27 18:41:02,357 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-27 18:41:02,357 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 252 transitions, 4048 flow [2024-06-27 18:41:02,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:02,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:02,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:02,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:41:02,358 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:02,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:02,358 INFO L85 PathProgramCache]: Analyzing trace with hash 211075183, now seen corresponding path program 10 times [2024-06-27 18:41:02,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:02,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053518670] [2024-06-27 18:41:02,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:02,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:03,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:03,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:03,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053518670] [2024-06-27 18:41:03,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053518670] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:03,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:03,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:03,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809382441] [2024-06-27 18:41:03,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:03,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:03,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:03,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:03,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:03,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:03,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 252 transitions, 4048 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:03,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:03,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:03,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:03,551 INFO L124 PetriNetUnfolderBase]: 1222/2120 cut-off events. [2024-06-27 18:41:03,552 INFO L125 PetriNetUnfolderBase]: For 44020/44020 co-relation queries the response was YES. [2024-06-27 18:41:03,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15522 conditions, 2120 events. 1222/2120 cut-off events. For 44020/44020 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11599 event pairs, 192 based on Foata normal form. 2/2059 useless extension candidates. Maximal degree in co-relation 15438. Up to 1324 conditions per place. [2024-06-27 18:41:03,566 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 131 selfloop transitions, 143 changer transitions 0/280 dead transitions. [2024-06-27 18:41:03,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 280 transitions, 4850 flow [2024-06-27 18:41:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:03,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:03,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:41:03,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45345345345345345 [2024-06-27 18:41:03,568 INFO L175 Difference]: Start difference. First operand has 182 places, 252 transitions, 4048 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:41:03,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 280 transitions, 4850 flow [2024-06-27 18:41:03,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 280 transitions, 4697 flow, removed 33 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:03,680 INFO L231 Difference]: Finished difference. Result has 186 places, 252 transitions, 4190 flow [2024-06-27 18:41:03,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3897, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4190, PETRI_PLACES=186, PETRI_TRANSITIONS=252} [2024-06-27 18:41:03,680 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-27 18:41:03,681 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 252 transitions, 4190 flow [2024-06-27 18:41:03,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:03,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:03,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:03,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:41:03,681 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:03,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:03,682 INFO L85 PathProgramCache]: Analyzing trace with hash 211075431, now seen corresponding path program 5 times [2024-06-27 18:41:03,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:03,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86025371] [2024-06-27 18:41:03,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86025371] [2024-06-27 18:41:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86025371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:04,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:04,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:41:04,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738654476] [2024-06-27 18:41:04,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:04,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:41:04,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:04,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:41:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:41:04,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:04,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 252 transitions, 4190 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:04,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:04,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:04,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:04,744 INFO L124 PetriNetUnfolderBase]: 1220/2107 cut-off events. [2024-06-27 18:41:04,745 INFO L125 PetriNetUnfolderBase]: For 46196/46196 co-relation queries the response was YES. [2024-06-27 18:41:04,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15692 conditions, 2107 events. 1220/2107 cut-off events. For 46196/46196 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11488 event pairs, 320 based on Foata normal form. 1/2054 useless extension candidates. Maximal degree in co-relation 15607. Up to 1721 conditions per place. [2024-06-27 18:41:04,761 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 235 selfloop transitions, 48 changer transitions 0/289 dead transitions. [2024-06-27 18:41:04,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 289 transitions, 5164 flow [2024-06-27 18:41:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:41:04,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:41:04,763 INFO L175 Difference]: Start difference. First operand has 186 places, 252 transitions, 4190 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:41:04,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 289 transitions, 5164 flow [2024-06-27 18:41:04,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 289 transitions, 4870 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:04,860 INFO L231 Difference]: Finished difference. Result has 187 places, 252 transitions, 4019 flow [2024-06-27 18:41:04,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3917, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4019, PETRI_PLACES=187, PETRI_TRANSITIONS=252} [2024-06-27 18:41:04,861 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-27 18:41:04,861 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 252 transitions, 4019 flow [2024-06-27 18:41:04,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:04,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:04,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:04,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:41:04,862 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:04,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:04,865 INFO L85 PathProgramCache]: Analyzing trace with hash 211383013, now seen corresponding path program 1 times [2024-06-27 18:41:04,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:04,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062564200] [2024-06-27 18:41:04,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:04,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:05,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:05,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062564200] [2024-06-27 18:41:05,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062564200] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:05,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:05,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:05,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654317473] [2024-06-27 18:41:05,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:05,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:05,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:05,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:05,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:05,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:05,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 252 transitions, 4019 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:05,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:05,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:05,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:06,376 INFO L124 PetriNetUnfolderBase]: 1223/2128 cut-off events. [2024-06-27 18:41:06,376 INFO L125 PetriNetUnfolderBase]: For 46359/46359 co-relation queries the response was YES. [2024-06-27 18:41:06,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15429 conditions, 2128 events. 1223/2128 cut-off events. For 46359/46359 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11671 event pairs, 403 based on Foata normal form. 1/2071 useless extension candidates. Maximal degree in co-relation 15343. Up to 1868 conditions per place. [2024-06-27 18:41:06,392 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 262 selfloop transitions, 21 changer transitions 0/289 dead transitions. [2024-06-27 18:41:06,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 289 transitions, 4893 flow [2024-06-27 18:41:06,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:41:06,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:41:06,394 INFO L175 Difference]: Start difference. First operand has 187 places, 252 transitions, 4019 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:41:06,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 289 transitions, 4893 flow [2024-06-27 18:41:06,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 289 transitions, 4810 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:06,503 INFO L231 Difference]: Finished difference. Result has 190 places, 255 transitions, 4030 flow [2024-06-27 18:41:06,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3936, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4030, PETRI_PLACES=190, PETRI_TRANSITIONS=255} [2024-06-27 18:41:06,504 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 149 predicate places. [2024-06-27 18:41:06,504 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 255 transitions, 4030 flow [2024-06-27 18:41:06,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:06,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:06,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:06,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:41:06,505 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:06,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:06,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1945996847, now seen corresponding path program 1 times [2024-06-27 18:41:06,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:06,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049094875] [2024-06-27 18:41:06,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:06,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:07,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:07,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:07,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049094875] [2024-06-27 18:41:07,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049094875] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:07,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:07,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:07,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849395324] [2024-06-27 18:41:07,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:07,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:07,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:07,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:07,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:07,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:07,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 255 transitions, 4030 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:07,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:07,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:07,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:07,729 INFO L124 PetriNetUnfolderBase]: 1166/2072 cut-off events. [2024-06-27 18:41:07,729 INFO L125 PetriNetUnfolderBase]: For 49031/49094 co-relation queries the response was YES. [2024-06-27 18:41:07,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15111 conditions, 2072 events. 1166/2072 cut-off events. For 49031/49094 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11748 event pairs, 245 based on Foata normal form. 40/2052 useless extension candidates. Maximal degree in co-relation 15024. Up to 1592 conditions per place. [2024-06-27 18:41:07,746 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 200 selfloop transitions, 59 changer transitions 0/292 dead transitions. [2024-06-27 18:41:07,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 292 transitions, 4770 flow [2024-06-27 18:41:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:41:07,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 18:41:07,748 INFO L175 Difference]: Start difference. First operand has 190 places, 255 transitions, 4030 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:41:07,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 292 transitions, 4770 flow [2024-06-27 18:41:07,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 292 transitions, 4608 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 18:41:07,858 INFO L231 Difference]: Finished difference. Result has 191 places, 263 transitions, 4117 flow [2024-06-27 18:41:07,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3868, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4117, PETRI_PLACES=191, PETRI_TRANSITIONS=263} [2024-06-27 18:41:07,858 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-27 18:41:07,858 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 263 transitions, 4117 flow [2024-06-27 18:41:07,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:07,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:07,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:07,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:41:07,859 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:07,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:07,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1555739443, now seen corresponding path program 2 times [2024-06-27 18:41:07,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:07,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831780432] [2024-06-27 18:41:07,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:07,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:08,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:08,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:08,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831780432] [2024-06-27 18:41:08,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831780432] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:08,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:08,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:08,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781388314] [2024-06-27 18:41:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:08,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:08,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:08,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:08,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:08,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:08,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 263 transitions, 4117 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:08,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:08,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:08,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:09,210 INFO L124 PetriNetUnfolderBase]: 1198/2156 cut-off events. [2024-06-27 18:41:09,210 INFO L125 PetriNetUnfolderBase]: For 51938/51987 co-relation queries the response was YES. [2024-06-27 18:41:09,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15752 conditions, 2156 events. 1198/2156 cut-off events. For 51938/51987 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12381 event pairs, 322 based on Foata normal form. 40/2134 useless extension candidates. Maximal degree in co-relation 15663. Up to 1665 conditions per place. [2024-06-27 18:41:09,227 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 203 selfloop transitions, 64 changer transitions 0/300 dead transitions. [2024-06-27 18:41:09,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 300 transitions, 4944 flow [2024-06-27 18:41:09,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 18:41:09,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 18:41:09,229 INFO L175 Difference]: Start difference. First operand has 191 places, 263 transitions, 4117 flow. Second operand 9 states and 161 transitions. [2024-06-27 18:41:09,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 300 transitions, 4944 flow [2024-06-27 18:41:09,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 300 transitions, 4757 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:09,334 INFO L231 Difference]: Finished difference. Result has 197 places, 271 transitions, 4247 flow [2024-06-27 18:41:09,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4000, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4247, PETRI_PLACES=197, PETRI_TRANSITIONS=271} [2024-06-27 18:41:09,335 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-27 18:41:09,335 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 271 transitions, 4247 flow [2024-06-27 18:41:09,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:09,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:09,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:09,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:41:09,336 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:09,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:09,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1553842088, now seen corresponding path program 1 times [2024-06-27 18:41:09,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:09,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598572244] [2024-06-27 18:41:09,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:09,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:09,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598572244] [2024-06-27 18:41:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598572244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26384126] [2024-06-27 18:41:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:09,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:10,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:10,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 271 transitions, 4247 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:10,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:10,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:10,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:10,534 INFO L124 PetriNetUnfolderBase]: 1307/2280 cut-off events. [2024-06-27 18:41:10,534 INFO L125 PetriNetUnfolderBase]: For 53497/53497 co-relation queries the response was YES. [2024-06-27 18:41:10,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16777 conditions, 2280 events. 1307/2280 cut-off events. For 53497/53497 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12721 event pairs, 332 based on Foata normal form. 1/2221 useless extension candidates. Maximal degree in co-relation 16686. Up to 1887 conditions per place. [2024-06-27 18:41:10,553 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 220 selfloop transitions, 77 changer transitions 0/303 dead transitions. [2024-06-27 18:41:10,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 303 transitions, 5083 flow [2024-06-27 18:41:10,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:10,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:10,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:41:10,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:41:10,554 INFO L175 Difference]: Start difference. First operand has 197 places, 271 transitions, 4247 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:41:10,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 303 transitions, 5083 flow [2024-06-27 18:41:10,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 303 transitions, 4921 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:10,714 INFO L231 Difference]: Finished difference. Result has 200 places, 274 transitions, 4338 flow [2024-06-27 18:41:10,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4085, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4338, PETRI_PLACES=200, PETRI_TRANSITIONS=274} [2024-06-27 18:41:10,714 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 159 predicate places. [2024-06-27 18:41:10,715 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 274 transitions, 4338 flow [2024-06-27 18:41:10,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:10,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:10,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:10,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:41:10,719 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:10,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:10,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1553836663, now seen corresponding path program 3 times [2024-06-27 18:41:10,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401571721] [2024-06-27 18:41:10,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:10,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:11,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:11,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401571721] [2024-06-27 18:41:11,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401571721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:11,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:11,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:11,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940848841] [2024-06-27 18:41:11,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:11,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:11,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:11,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:11,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:11,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:11,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 274 transitions, 4338 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:11,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:11,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:11,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:12,078 INFO L124 PetriNetUnfolderBase]: 1226/2200 cut-off events. [2024-06-27 18:41:12,078 INFO L125 PetriNetUnfolderBase]: For 58768/58879 co-relation queries the response was YES. [2024-06-27 18:41:12,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16247 conditions, 2200 events. 1226/2200 cut-off events. For 58768/58879 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12661 event pairs, 303 based on Foata normal form. 76/2209 useless extension candidates. Maximal degree in co-relation 16155. Up to 1705 conditions per place. [2024-06-27 18:41:12,096 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 201 selfloop transitions, 70 changer transitions 0/305 dead transitions. [2024-06-27 18:41:12,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 305 transitions, 5092 flow [2024-06-27 18:41:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:41:12,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:41:12,100 INFO L175 Difference]: Start difference. First operand has 200 places, 274 transitions, 4338 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:41:12,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 305 transitions, 5092 flow [2024-06-27 18:41:12,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 305 transitions, 4967 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:12,263 INFO L231 Difference]: Finished difference. Result has 204 places, 276 transitions, 4417 flow [2024-06-27 18:41:12,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4213, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4417, PETRI_PLACES=204, PETRI_TRANSITIONS=276} [2024-06-27 18:41:12,265 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 18:41:12,266 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 276 transitions, 4417 flow [2024-06-27 18:41:12,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:12,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:12,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:12,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:41:12,267 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:12,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:12,268 INFO L85 PathProgramCache]: Analyzing trace with hash 486197155, now seen corresponding path program 2 times [2024-06-27 18:41:12,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:12,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84101975] [2024-06-27 18:41:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:12,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:12,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:12,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:12,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84101975] [2024-06-27 18:41:12,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84101975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:12,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:12,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:12,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049721496] [2024-06-27 18:41:12,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:12,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:12,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:12,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:12,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:12,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:12,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 276 transitions, 4417 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:12,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:12,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:13,511 INFO L124 PetriNetUnfolderBase]: 1392/2401 cut-off events. [2024-06-27 18:41:13,511 INFO L125 PetriNetUnfolderBase]: For 63471/63471 co-relation queries the response was YES. [2024-06-27 18:41:13,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18034 conditions, 2401 events. 1392/2401 cut-off events. For 63471/63471 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13330 event pairs, 301 based on Foata normal form. 2/2343 useless extension candidates. Maximal degree in co-relation 17941. Up to 1735 conditions per place. [2024-06-27 18:41:13,530 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 222 selfloop transitions, 98 changer transitions 0/326 dead transitions. [2024-06-27 18:41:13,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 326 transitions, 5696 flow [2024-06-27 18:41:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:13,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:13,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:41:13,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783783783783784 [2024-06-27 18:41:13,531 INFO L175 Difference]: Start difference. First operand has 204 places, 276 transitions, 4417 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:41:13,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 326 transitions, 5696 flow [2024-06-27 18:41:13,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 326 transitions, 5496 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:13,672 INFO L231 Difference]: Finished difference. Result has 207 places, 288 transitions, 4725 flow [2024-06-27 18:41:13,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4219, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4725, PETRI_PLACES=207, PETRI_TRANSITIONS=288} [2024-06-27 18:41:13,673 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-27 18:41:13,673 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 288 transitions, 4725 flow [2024-06-27 18:41:13,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:13,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:13,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:13,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:41:13,674 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:13,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:13,674 INFO L85 PathProgramCache]: Analyzing trace with hash -769718421, now seen corresponding path program 3 times [2024-06-27 18:41:13,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:13,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845250563] [2024-06-27 18:41:13,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:13,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:14,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:14,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:14,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845250563] [2024-06-27 18:41:14,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845250563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:14,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:14,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:14,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14487454] [2024-06-27 18:41:14,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:14,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:14,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:14,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:14,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:14,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 288 transitions, 4725 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:14,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:14,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:14,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:14,971 INFO L124 PetriNetUnfolderBase]: 1414/2426 cut-off events. [2024-06-27 18:41:14,971 INFO L125 PetriNetUnfolderBase]: For 66406/66406 co-relation queries the response was YES. [2024-06-27 18:41:14,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18628 conditions, 2426 events. 1414/2426 cut-off events. For 66406/66406 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13512 event pairs, 293 based on Foata normal form. 2/2372 useless extension candidates. Maximal degree in co-relation 18533. Up to 2038 conditions per place. [2024-06-27 18:41:14,993 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 249 selfloop transitions, 73 changer transitions 0/328 dead transitions. [2024-06-27 18:41:14,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 328 transitions, 5671 flow [2024-06-27 18:41:14,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:14,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:41:14,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:41:14,995 INFO L175 Difference]: Start difference. First operand has 207 places, 288 transitions, 4725 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:41:14,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 328 transitions, 5671 flow [2024-06-27 18:41:15,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 328 transitions, 5543 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:15,175 INFO L231 Difference]: Finished difference. Result has 212 places, 294 transitions, 4861 flow [2024-06-27 18:41:15,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4597, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4861, PETRI_PLACES=212, PETRI_TRANSITIONS=294} [2024-06-27 18:41:15,175 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-27 18:41:15,175 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 294 transitions, 4861 flow [2024-06-27 18:41:15,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:15,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:15,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:15,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:41:15,176 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:15,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:15,177 INFO L85 PathProgramCache]: Analyzing trace with hash 377539319, now seen corresponding path program 4 times [2024-06-27 18:41:15,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:15,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415929428] [2024-06-27 18:41:15,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:15,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415929428] [2024-06-27 18:41:15,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415929428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:15,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:15,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:15,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499393169] [2024-06-27 18:41:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:15,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:15,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:15,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:15,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:15,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:15,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 294 transitions, 4861 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:15,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:15,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:15,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:16,447 INFO L124 PetriNetUnfolderBase]: 1339/2377 cut-off events. [2024-06-27 18:41:16,447 INFO L125 PetriNetUnfolderBase]: For 70268/70366 co-relation queries the response was YES. [2024-06-27 18:41:16,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 2377 events. 1339/2377 cut-off events. For 70268/70366 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13836 event pairs, 300 based on Foata normal form. 74/2386 useless extension candidates. Maximal degree in co-relation 18306. Up to 1875 conditions per place. [2024-06-27 18:41:16,468 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 238 selfloop transitions, 65 changer transitions 0/337 dead transitions. [2024-06-27 18:41:16,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 337 transitions, 5762 flow [2024-06-27 18:41:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:41:16,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:41:16,469 INFO L175 Difference]: Start difference. First operand has 212 places, 294 transitions, 4861 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:41:16,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 337 transitions, 5762 flow [2024-06-27 18:41:16,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 337 transitions, 5570 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:16,691 INFO L231 Difference]: Finished difference. Result has 215 places, 309 transitions, 5032 flow [2024-06-27 18:41:16,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4669, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5032, PETRI_PLACES=215, PETRI_TRANSITIONS=309} [2024-06-27 18:41:16,692 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-27 18:41:16,692 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 309 transitions, 5032 flow [2024-06-27 18:41:16,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:16,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:16,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:16,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:41:16,692 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:16,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:16,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1098541880, now seen corresponding path program 2 times [2024-06-27 18:41:16,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:16,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437929399] [2024-06-27 18:41:16,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:16,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:17,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:17,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:17,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437929399] [2024-06-27 18:41:17,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437929399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:17,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:17,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:17,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709121225] [2024-06-27 18:41:17,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:17,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:17,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:17,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:17,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:17,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:17,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 309 transitions, 5032 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:17,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:17,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:17,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:18,082 INFO L124 PetriNetUnfolderBase]: 1483/2542 cut-off events. [2024-06-27 18:41:18,082 INFO L125 PetriNetUnfolderBase]: For 69910/69910 co-relation queries the response was YES. [2024-06-27 18:41:18,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19559 conditions, 2542 events. 1483/2542 cut-off events. For 69910/69910 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14320 event pairs, 353 based on Foata normal form. 1/2487 useless extension candidates. Maximal degree in co-relation 19459. Up to 2156 conditions per place. [2024-06-27 18:41:18,103 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 266 selfloop transitions, 72 changer transitions 0/344 dead transitions. [2024-06-27 18:41:18,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 344 transitions, 6026 flow [2024-06-27 18:41:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:18,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:41:18,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:41:18,105 INFO L175 Difference]: Start difference. First operand has 215 places, 309 transitions, 5032 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:41:18,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 344 transitions, 6026 flow [2024-06-27 18:41:18,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 344 transitions, 5850 flow, removed 51 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:18,334 INFO L231 Difference]: Finished difference. Result has 220 places, 315 transitions, 5186 flow [2024-06-27 18:41:18,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4876, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5186, PETRI_PLACES=220, PETRI_TRANSITIONS=315} [2024-06-27 18:41:18,335 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-27 18:41:18,335 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 315 transitions, 5186 flow [2024-06-27 18:41:18,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:18,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:18,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:18,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:41:18,335 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:18,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:18,336 INFO L85 PathProgramCache]: Analyzing trace with hash 367180963, now seen corresponding path program 5 times [2024-06-27 18:41:18,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:18,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570257255] [2024-06-27 18:41:18,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:18,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:18,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:19,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:19,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:19,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570257255] [2024-06-27 18:41:19,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570257255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:19,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:19,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:19,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129194013] [2024-06-27 18:41:19,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:19,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:19,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:19,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:19,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:19,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:19,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 315 transitions, 5186 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:19,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:19,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:19,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:19,798 INFO L124 PetriNetUnfolderBase]: 1366/2414 cut-off events. [2024-06-27 18:41:19,799 INFO L125 PetriNetUnfolderBase]: For 75672/75841 co-relation queries the response was YES. [2024-06-27 18:41:19,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18683 conditions, 2414 events. 1366/2414 cut-off events. For 75672/75841 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 14058 event pairs, 304 based on Foata normal form. 142/2487 useless extension candidates. Maximal degree in co-relation 18582. Up to 1918 conditions per place. [2024-06-27 18:41:19,820 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 248 selfloop transitions, 64 changer transitions 0/348 dead transitions. [2024-06-27 18:41:19,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 348 transitions, 6038 flow [2024-06-27 18:41:19,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:19,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:41:19,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:41:19,822 INFO L175 Difference]: Start difference. First operand has 220 places, 315 transitions, 5186 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:41:19,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 348 transitions, 6038 flow [2024-06-27 18:41:20,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 348 transitions, 5906 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:20,033 INFO L231 Difference]: Finished difference. Result has 222 places, 319 transitions, 5270 flow [2024-06-27 18:41:20,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5270, PETRI_PLACES=222, PETRI_TRANSITIONS=319} [2024-06-27 18:41:20,034 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 181 predicate places. [2024-06-27 18:41:20,034 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 319 transitions, 5270 flow [2024-06-27 18:41:20,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:20,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:20,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:20,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:41:20,035 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:20,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:20,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1232747149, now seen corresponding path program 6 times [2024-06-27 18:41:20,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:20,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429712577] [2024-06-27 18:41:20,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:20,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:20,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:20,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429712577] [2024-06-27 18:41:20,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429712577] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:20,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:20,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:20,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487821023] [2024-06-27 18:41:20,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:20,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:20,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:20,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 319 transitions, 5270 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:20,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:20,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:20,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:21,583 INFO L124 PetriNetUnfolderBase]: 1381/2441 cut-off events. [2024-06-27 18:41:21,583 INFO L125 PetriNetUnfolderBase]: For 79894/80096 co-relation queries the response was YES. [2024-06-27 18:41:21,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19066 conditions, 2441 events. 1381/2441 cut-off events. For 79894/80096 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14210 event pairs, 281 based on Foata normal form. 157/2533 useless extension candidates. Maximal degree in co-relation 18964. Up to 1905 conditions per place. [2024-06-27 18:41:21,604 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 77 changer transitions 0/351 dead transitions. [2024-06-27 18:41:21,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 351 transitions, 6152 flow [2024-06-27 18:41:21,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:21,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:21,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:41:21,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:41:21,617 INFO L175 Difference]: Start difference. First operand has 222 places, 319 transitions, 5270 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:41:21,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 351 transitions, 6152 flow [2024-06-27 18:41:21,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 351 transitions, 5978 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:21,814 INFO L231 Difference]: Finished difference. Result has 224 places, 321 transitions, 5325 flow [2024-06-27 18:41:21,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5096, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5325, PETRI_PLACES=224, PETRI_TRANSITIONS=321} [2024-06-27 18:41:21,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 183 predicate places. [2024-06-27 18:41:21,815 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 321 transitions, 5325 flow [2024-06-27 18:41:21,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:21,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:21,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:21,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:41:21,816 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:21,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash 486398965, now seen corresponding path program 4 times [2024-06-27 18:41:21,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:21,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710351445] [2024-06-27 18:41:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:21,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:21,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:22,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:22,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710351445] [2024-06-27 18:41:22,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710351445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:22,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:22,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:22,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95498092] [2024-06-27 18:41:22,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:22,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:22,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:22,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:22,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:22,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 321 transitions, 5325 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:22,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:22,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:22,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:23,210 INFO L124 PetriNetUnfolderBase]: 1542/2649 cut-off events. [2024-06-27 18:41:23,210 INFO L125 PetriNetUnfolderBase]: For 78853/78853 co-relation queries the response was YES. [2024-06-27 18:41:23,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20474 conditions, 2649 events. 1542/2649 cut-off events. For 78853/78853 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 15186 event pairs, 296 based on Foata normal form. 2/2590 useless extension candidates. Maximal degree in co-relation 20371. Up to 1949 conditions per place. [2024-06-27 18:41:23,242 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 237 selfloop transitions, 118 changer transitions 0/361 dead transitions. [2024-06-27 18:41:23,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 361 transitions, 6513 flow [2024-06-27 18:41:23,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 176 transitions. [2024-06-27 18:41:23,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756756756756757 [2024-06-27 18:41:23,244 INFO L175 Difference]: Start difference. First operand has 224 places, 321 transitions, 5325 flow. Second operand 10 states and 176 transitions. [2024-06-27 18:41:23,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 361 transitions, 6513 flow [2024-06-27 18:41:23,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 361 transitions, 6336 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:23,460 INFO L231 Difference]: Finished difference. Result has 228 places, 324 transitions, 5460 flow [2024-06-27 18:41:23,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5148, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5460, PETRI_PLACES=228, PETRI_TRANSITIONS=324} [2024-06-27 18:41:23,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-27 18:41:23,460 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 324 transitions, 5460 flow [2024-06-27 18:41:23,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:23,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:23,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:23,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:41:23,461 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:23,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash 486406405, now seen corresponding path program 5 times [2024-06-27 18:41:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:23,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668993203] [2024-06-27 18:41:23,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:23,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:24,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668993203] [2024-06-27 18:41:24,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668993203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:24,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:24,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:24,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630084232] [2024-06-27 18:41:24,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:24,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:24,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:24,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:24,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 324 transitions, 5460 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:24,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:24,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:24,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:24,754 INFO L124 PetriNetUnfolderBase]: 1538/2640 cut-off events. [2024-06-27 18:41:24,754 INFO L125 PetriNetUnfolderBase]: For 78399/78399 co-relation queries the response was YES. [2024-06-27 18:41:24,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20449 conditions, 2640 events. 1538/2640 cut-off events. For 78399/78399 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15054 event pairs, 296 based on Foata normal form. 2/2582 useless extension candidates. Maximal degree in co-relation 20345. Up to 1946 conditions per place. [2024-06-27 18:41:24,776 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 229 selfloop transitions, 125 changer transitions 0/360 dead transitions. [2024-06-27 18:41:24,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 360 transitions, 6490 flow [2024-06-27 18:41:24,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:24,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:24,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:41:24,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:41:24,777 INFO L175 Difference]: Start difference. First operand has 228 places, 324 transitions, 5460 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:41:24,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 360 transitions, 6490 flow [2024-06-27 18:41:24,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 360 transitions, 6175 flow, removed 61 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:25,000 INFO L231 Difference]: Finished difference. Result has 231 places, 324 transitions, 5402 flow [2024-06-27 18:41:25,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5145, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5402, PETRI_PLACES=231, PETRI_TRANSITIONS=324} [2024-06-27 18:41:25,000 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 18:41:25,000 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 324 transitions, 5402 flow [2024-06-27 18:41:25,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:25,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:25,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:25,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:41:25,001 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:25,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:25,001 INFO L85 PathProgramCache]: Analyzing trace with hash 486406684, now seen corresponding path program 1 times [2024-06-27 18:41:25,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:25,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871783293] [2024-06-27 18:41:25,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:25,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:25,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:25,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:25,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871783293] [2024-06-27 18:41:25,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871783293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:25,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:25,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:25,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479847023] [2024-06-27 18:41:25,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:25,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:25,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:25,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:25,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:25,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:25,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 324 transitions, 5402 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:25,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:25,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:25,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:26,350 INFO L124 PetriNetUnfolderBase]: 1551/2655 cut-off events. [2024-06-27 18:41:26,350 INFO L125 PetriNetUnfolderBase]: For 80356/80356 co-relation queries the response was YES. [2024-06-27 18:41:26,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20561 conditions, 2655 events. 1551/2655 cut-off events. For 80356/80356 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15143 event pairs, 468 based on Foata normal form. 1/2600 useless extension candidates. Maximal degree in co-relation 20456. Up to 2391 conditions per place. [2024-06-27 18:41:26,369 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 329 selfloop transitions, 28 changer transitions 0/363 dead transitions. [2024-06-27 18:41:26,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 363 transitions, 6493 flow [2024-06-27 18:41:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:26,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:41:26,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:41:26,371 INFO L175 Difference]: Start difference. First operand has 231 places, 324 transitions, 5402 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:41:26,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 363 transitions, 6493 flow [2024-06-27 18:41:26,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 363 transitions, 6248 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:26,595 INFO L231 Difference]: Finished difference. Result has 233 places, 326 transitions, 5268 flow [2024-06-27 18:41:26,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5268, PETRI_PLACES=233, PETRI_TRANSITIONS=326} [2024-06-27 18:41:26,595 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 192 predicate places. [2024-06-27 18:41:26,595 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 326 transitions, 5268 flow [2024-06-27 18:41:26,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:26,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:26,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:26,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:41:26,596 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:26,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:26,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1733661189, now seen corresponding path program 7 times [2024-06-27 18:41:26,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:26,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918178594] [2024-06-27 18:41:26,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:26,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:27,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918178594] [2024-06-27 18:41:27,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918178594] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:27,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269944928] [2024-06-27 18:41:27,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:27,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:27,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:27,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:27,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:27,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:27,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 326 transitions, 5268 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:27,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:27,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:27,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:27,871 INFO L124 PetriNetUnfolderBase]: 1439/2516 cut-off events. [2024-06-27 18:41:27,872 INFO L125 PetriNetUnfolderBase]: For 85455/85560 co-relation queries the response was YES. [2024-06-27 18:41:27,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19752 conditions, 2516 events. 1439/2516 cut-off events. For 85455/85560 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 14835 event pairs, 266 based on Foata normal form. 70/2523 useless extension candidates. Maximal degree in co-relation 19646. Up to 1890 conditions per place. [2024-06-27 18:41:27,896 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 243 selfloop transitions, 76 changer transitions 0/355 dead transitions. [2024-06-27 18:41:27,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 355 transitions, 6116 flow [2024-06-27 18:41:27,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:27,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:27,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:41:27,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 18:41:27,897 INFO L175 Difference]: Start difference. First operand has 233 places, 326 transitions, 5268 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:41:27,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 355 transitions, 6116 flow [2024-06-27 18:41:28,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 355 transitions, 6030 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:28,181 INFO L231 Difference]: Finished difference. Result has 234 places, 330 transitions, 5474 flow [2024-06-27 18:41:28,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5182, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5474, PETRI_PLACES=234, PETRI_TRANSITIONS=330} [2024-06-27 18:41:28,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-27 18:41:28,182 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 330 transitions, 5474 flow [2024-06-27 18:41:28,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:28,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:28,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:28,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:41:28,183 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:28,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1730918464, now seen corresponding path program 3 times [2024-06-27 18:41:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191923555] [2024-06-27 18:41:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:28,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:28,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:28,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191923555] [2024-06-27 18:41:28,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191923555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:28,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:28,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:28,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99841753] [2024-06-27 18:41:28,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:28,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:28,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:28,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:28,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:28,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:28,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 330 transitions, 5474 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:28,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:28,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:28,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:29,622 INFO L124 PetriNetUnfolderBase]: 1567/2685 cut-off events. [2024-06-27 18:41:29,623 INFO L125 PetriNetUnfolderBase]: For 82055/82055 co-relation queries the response was YES. [2024-06-27 18:41:29,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20860 conditions, 2685 events. 1567/2685 cut-off events. For 82055/82055 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15361 event pairs, 346 based on Foata normal form. 1/2630 useless extension candidates. Maximal degree in co-relation 20752. Up to 2165 conditions per place. [2024-06-27 18:41:29,649 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 256 selfloop transitions, 98 changer transitions 0/360 dead transitions. [2024-06-27 18:41:29,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 360 transitions, 6443 flow [2024-06-27 18:41:29,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 18:41:29,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-27 18:41:29,651 INFO L175 Difference]: Start difference. First operand has 234 places, 330 transitions, 5474 flow. Second operand 8 states and 137 transitions. [2024-06-27 18:41:29,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 360 transitions, 6443 flow [2024-06-27 18:41:29,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 360 transitions, 6219 flow, removed 60 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:29,940 INFO L231 Difference]: Finished difference. Result has 237 places, 334 transitions, 5597 flow [2024-06-27 18:41:29,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5262, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5597, PETRI_PLACES=237, PETRI_TRANSITIONS=334} [2024-06-27 18:41:29,941 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-27 18:41:29,941 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 334 transitions, 5597 flow [2024-06-27 18:41:29,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:29,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:29,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:29,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:41:29,942 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:29,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:29,942 INFO L85 PathProgramCache]: Analyzing trace with hash 255076365, now seen corresponding path program 8 times [2024-06-27 18:41:29,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:29,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975743171] [2024-06-27 18:41:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:29,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975743171] [2024-06-27 18:41:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975743171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:30,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:30,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:30,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124058828] [2024-06-27 18:41:30,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:30,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:30,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:30,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:30,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:30,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 334 transitions, 5597 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:30,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:30,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:30,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:31,626 INFO L124 PetriNetUnfolderBase]: 1445/2545 cut-off events. [2024-06-27 18:41:31,626 INFO L125 PetriNetUnfolderBase]: For 89473/89693 co-relation queries the response was YES. [2024-06-27 18:41:31,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19972 conditions, 2545 events. 1445/2545 cut-off events. For 89473/89693 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 15013 event pairs, 303 based on Foata normal form. 166/2642 useless extension candidates. Maximal degree in co-relation 19863. Up to 1939 conditions per place. [2024-06-27 18:41:31,650 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 245 selfloop transitions, 79 changer transitions 0/362 dead transitions. [2024-06-27 18:41:31,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 362 transitions, 6467 flow [2024-06-27 18:41:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:31,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:41:31,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 18:41:31,652 INFO L175 Difference]: Start difference. First operand has 237 places, 334 transitions, 5597 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:41:31,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 362 transitions, 6467 flow [2024-06-27 18:41:31,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 362 transitions, 6277 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:31,892 INFO L231 Difference]: Finished difference. Result has 239 places, 336 transitions, 5658 flow [2024-06-27 18:41:31,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5407, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5658, PETRI_PLACES=239, PETRI_TRANSITIONS=336} [2024-06-27 18:41:31,892 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 18:41:31,892 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 336 transitions, 5658 flow [2024-06-27 18:41:31,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:31,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:31,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:31,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:41:31,893 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:31,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:31,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1419168678, now seen corresponding path program 1 times [2024-06-27 18:41:31,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:31,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622896088] [2024-06-27 18:41:31,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:31,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:32,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:32,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622896088] [2024-06-27 18:41:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622896088] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:32,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:41:32,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608898801] [2024-06-27 18:41:32,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:41:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:32,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:41:32,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:41:32,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:32,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 336 transitions, 5658 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:32,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:32,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:32,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:33,385 INFO L124 PetriNetUnfolderBase]: 1594/2721 cut-off events. [2024-06-27 18:41:33,385 INFO L125 PetriNetUnfolderBase]: For 81931/81931 co-relation queries the response was YES. [2024-06-27 18:41:33,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21209 conditions, 2721 events. 1594/2721 cut-off events. For 81931/81931 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15533 event pairs, 363 based on Foata normal form. 1/2666 useless extension candidates. Maximal degree in co-relation 21099. Up to 2285 conditions per place. [2024-06-27 18:41:33,410 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 286 selfloop transitions, 81 changer transitions 0/373 dead transitions. [2024-06-27 18:41:33,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 373 transitions, 6671 flow [2024-06-27 18:41:33,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:41:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:41:33,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:41:33,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:41:33,411 INFO L175 Difference]: Start difference. First operand has 239 places, 336 transitions, 5658 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:41:33,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 373 transitions, 6671 flow [2024-06-27 18:41:33,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 373 transitions, 6517 flow, removed 32 selfloop flow, removed 4 redundant places. [2024-06-27 18:41:33,647 INFO L231 Difference]: Finished difference. Result has 245 places, 339 transitions, 5762 flow [2024-06-27 18:41:33,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5504, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5762, PETRI_PLACES=245, PETRI_TRANSITIONS=339} [2024-06-27 18:41:33,647 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-27 18:41:33,648 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 339 transitions, 5762 flow [2024-06-27 18:41:33,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:33,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:33,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:33,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:41:33,648 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:33,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:33,651 INFO L85 PathProgramCache]: Analyzing trace with hash 826470307, now seen corresponding path program 6 times [2024-06-27 18:41:33,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:33,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523122351] [2024-06-27 18:41:33,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:33,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:34,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:34,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523122351] [2024-06-27 18:41:34,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523122351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:34,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:34,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:34,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457879006] [2024-06-27 18:41:34,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:34,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:34,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:34,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:34,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:34,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:34,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 339 transitions, 5762 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:34,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:34,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:34,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:34,982 INFO L124 PetriNetUnfolderBase]: 1614/2750 cut-off events. [2024-06-27 18:41:34,982 INFO L125 PetriNetUnfolderBase]: For 81436/81436 co-relation queries the response was YES. [2024-06-27 18:41:34,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21348 conditions, 2750 events. 1614/2750 cut-off events. For 81436/81436 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 15756 event pairs, 297 based on Foata normal form. 2/2697 useless extension candidates. Maximal degree in co-relation 21237. Up to 2234 conditions per place. [2024-06-27 18:41:35,008 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 279 selfloop transitions, 88 changer transitions 0/373 dead transitions. [2024-06-27 18:41:35,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 373 transitions, 6770 flow [2024-06-27 18:41:35,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:35,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:41:35,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:41:35,010 INFO L175 Difference]: Start difference. First operand has 245 places, 339 transitions, 5762 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:41:35,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 373 transitions, 6770 flow [2024-06-27 18:41:35,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 373 transitions, 6596 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:35,371 INFO L231 Difference]: Finished difference. Result has 247 places, 342 transitions, 5864 flow [2024-06-27 18:41:35,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5588, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5864, PETRI_PLACES=247, PETRI_TRANSITIONS=342} [2024-06-27 18:41:35,371 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 206 predicate places. [2024-06-27 18:41:35,371 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 342 transitions, 5864 flow [2024-06-27 18:41:35,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:35,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:35,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:35,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:41:35,372 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:35,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:35,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1614589569, now seen corresponding path program 9 times [2024-06-27 18:41:35,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:35,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114544546] [2024-06-27 18:41:35,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:35,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:36,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:36,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114544546] [2024-06-27 18:41:36,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114544546] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:36,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:36,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:36,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850899838] [2024-06-27 18:41:36,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:36,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:36,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:36,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:36,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:36,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:36,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 342 transitions, 5864 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:36,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:36,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:36,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:36,865 INFO L124 PetriNetUnfolderBase]: 1471/2598 cut-off events. [2024-06-27 18:41:36,865 INFO L125 PetriNetUnfolderBase]: For 88044/88180 co-relation queries the response was YES. [2024-06-27 18:41:36,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20662 conditions, 2598 events. 1471/2598 cut-off events. For 88044/88180 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15445 event pairs, 228 based on Foata normal form. 94/2621 useless extension candidates. Maximal degree in co-relation 20550. Up to 1975 conditions per place. [2024-06-27 18:41:36,892 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 245 selfloop transitions, 87 changer transitions 0/370 dead transitions. [2024-06-27 18:41:36,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 370 transitions, 6772 flow [2024-06-27 18:41:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:41:36,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 18:41:36,893 INFO L175 Difference]: Start difference. First operand has 247 places, 342 transitions, 5864 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:41:36,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 370 transitions, 6772 flow [2024-06-27 18:41:37,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 370 transitions, 6554 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:37,249 INFO L231 Difference]: Finished difference. Result has 248 places, 344 transitions, 5904 flow [2024-06-27 18:41:37,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5646, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5904, PETRI_PLACES=248, PETRI_TRANSITIONS=344} [2024-06-27 18:41:37,250 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-27 18:41:37,250 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 344 transitions, 5904 flow [2024-06-27 18:41:37,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:37,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:37,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:41:37,250 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:37,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash 942655207, now seen corresponding path program 7 times [2024-06-27 18:41:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:37,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135209415] [2024-06-27 18:41:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:37,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:37,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:37,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135209415] [2024-06-27 18:41:37,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135209415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:37,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:37,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:37,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296272927] [2024-06-27 18:41:37,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:37,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:37,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:37,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:37,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:37,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:37,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 344 transitions, 5904 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:37,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:37,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:37,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:38,672 INFO L124 PetriNetUnfolderBase]: 1689/2879 cut-off events. [2024-06-27 18:41:38,672 INFO L125 PetriNetUnfolderBase]: For 97425/97425 co-relation queries the response was YES. [2024-06-27 18:41:38,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22846 conditions, 2879 events. 1689/2879 cut-off events. For 97425/97425 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16701 event pairs, 309 based on Foata normal form. 2/2820 useless extension candidates. Maximal degree in co-relation 22733. Up to 1932 conditions per place. [2024-06-27 18:41:38,700 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 237 selfloop transitions, 146 changer transitions 0/389 dead transitions. [2024-06-27 18:41:38,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 389 transitions, 7382 flow [2024-06-27 18:41:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:38,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:38,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:41:38,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:41:38,701 INFO L175 Difference]: Start difference. First operand has 248 places, 344 transitions, 5904 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:41:38,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 389 transitions, 7382 flow [2024-06-27 18:41:38,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 389 transitions, 7134 flow, removed 40 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:39,004 INFO L231 Difference]: Finished difference. Result has 252 places, 356 transitions, 6366 flow [2024-06-27 18:41:39,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5666, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6366, PETRI_PLACES=252, PETRI_TRANSITIONS=356} [2024-06-27 18:41:39,019 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 18:41:39,020 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 356 transitions, 6366 flow [2024-06-27 18:41:39,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:39,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:39,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:39,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:41:39,020 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:39,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:39,021 INFO L85 PathProgramCache]: Analyzing trace with hash 374301807, now seen corresponding path program 8 times [2024-06-27 18:41:39,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:39,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966977794] [2024-06-27 18:41:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:39,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:39,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966977794] [2024-06-27 18:41:39,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966977794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:39,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:39,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:39,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954345586] [2024-06-27 18:41:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:39,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:39,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:39,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:39,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 356 transitions, 6366 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:39,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:39,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:39,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:40,460 INFO L124 PetriNetUnfolderBase]: 1709/2909 cut-off events. [2024-06-27 18:41:40,461 INFO L125 PetriNetUnfolderBase]: For 96889/96889 co-relation queries the response was YES. [2024-06-27 18:41:40,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23604 conditions, 2909 events. 1709/2909 cut-off events. For 96889/96889 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16920 event pairs, 244 based on Foata normal form. 2/2850 useless extension candidates. Maximal degree in co-relation 23489. Up to 1949 conditions per place. [2024-06-27 18:41:40,487 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 216 selfloop transitions, 169 changer transitions 0/391 dead transitions. [2024-06-27 18:41:40,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 391 transitions, 7538 flow [2024-06-27 18:41:40,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:40,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:41:40,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:41:40,494 INFO L175 Difference]: Start difference. First operand has 252 places, 356 transitions, 6366 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:41:40,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 391 transitions, 7538 flow [2024-06-27 18:41:40,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 391 transitions, 7392 flow, removed 45 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:40,881 INFO L231 Difference]: Finished difference. Result has 256 places, 359 transitions, 6660 flow [2024-06-27 18:41:40,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6224, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6660, PETRI_PLACES=256, PETRI_TRANSITIONS=359} [2024-06-27 18:41:40,882 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-27 18:41:40,882 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 359 transitions, 6660 flow [2024-06-27 18:41:40,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:40,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:40,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:40,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:41:40,883 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:40,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:40,883 INFO L85 PathProgramCache]: Analyzing trace with hash 374302086, now seen corresponding path program 2 times [2024-06-27 18:41:40,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:40,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522690006] [2024-06-27 18:41:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:40,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:41,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:41,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522690006] [2024-06-27 18:41:41,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522690006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:41,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:41,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:41,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509785901] [2024-06-27 18:41:41,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:41,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:41,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:41,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:41,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:41,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:41,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 359 transitions, 6660 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:41,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:41,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:41,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:42,245 INFO L124 PetriNetUnfolderBase]: 1722/2923 cut-off events. [2024-06-27 18:41:42,245 INFO L125 PetriNetUnfolderBase]: For 100238/100238 co-relation queries the response was YES. [2024-06-27 18:41:42,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24200 conditions, 2923 events. 1722/2923 cut-off events. For 100238/100238 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16922 event pairs, 464 based on Foata normal form. 1/2867 useless extension candidates. Maximal degree in co-relation 24084. Up to 2607 conditions per place. [2024-06-27 18:41:42,361 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 352 selfloop transitions, 40 changer transitions 0/398 dead transitions. [2024-06-27 18:41:42,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 398 transitions, 7928 flow [2024-06-27 18:41:42,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:42,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:42,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:41:42,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:41:42,362 INFO L175 Difference]: Start difference. First operand has 256 places, 359 transitions, 6660 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:41:42,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 398 transitions, 7928 flow [2024-06-27 18:41:42,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 398 transitions, 7535 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:42,672 INFO L231 Difference]: Finished difference. Result has 258 places, 361 transitions, 6419 flow [2024-06-27 18:41:42,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6283, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6419, PETRI_PLACES=258, PETRI_TRANSITIONS=361} [2024-06-27 18:41:42,673 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 217 predicate places. [2024-06-27 18:41:42,673 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 361 transitions, 6419 flow [2024-06-27 18:41:42,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:42,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:42,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:42,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:41:42,673 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:42,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:42,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1699805125, now seen corresponding path program 9 times [2024-06-27 18:41:42,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:42,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401833324] [2024-06-27 18:41:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:42,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:43,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:43,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:43,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401833324] [2024-06-27 18:41:43,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401833324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:43,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:43,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:43,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646112568] [2024-06-27 18:41:43,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:43,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:43,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:43,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:43,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:43,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:43,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 361 transitions, 6419 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:43,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:43,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:43,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:44,054 INFO L124 PetriNetUnfolderBase]: 1718/2925 cut-off events. [2024-06-27 18:41:44,054 INFO L125 PetriNetUnfolderBase]: For 91861/91861 co-relation queries the response was YES. [2024-06-27 18:41:44,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23572 conditions, 2925 events. 1718/2925 cut-off events. For 91861/91861 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17010 event pairs, 244 based on Foata normal form. 2/2865 useless extension candidates. Maximal degree in co-relation 23456. Up to 1966 conditions per place. [2024-06-27 18:41:44,082 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 229 selfloop transitions, 158 changer transitions 0/393 dead transitions. [2024-06-27 18:41:44,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 393 transitions, 7507 flow [2024-06-27 18:41:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:41:44,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 18:41:44,084 INFO L175 Difference]: Start difference. First operand has 258 places, 361 transitions, 6419 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:41:44,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 393 transitions, 7507 flow [2024-06-27 18:41:44,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 393 transitions, 7343 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:44,422 INFO L231 Difference]: Finished difference. Result has 260 places, 361 transitions, 6581 flow [2024-06-27 18:41:44,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6255, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6581, PETRI_PLACES=260, PETRI_TRANSITIONS=361} [2024-06-27 18:41:44,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 18:41:44,423 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 361 transitions, 6581 flow [2024-06-27 18:41:44,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:44,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:44,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:44,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:41:44,423 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:44,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:44,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1991872248, now seen corresponding path program 3 times [2024-06-27 18:41:44,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:44,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442950521] [2024-06-27 18:41:44,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:44,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:45,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442950521] [2024-06-27 18:41:45,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442950521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:45,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:45,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:45,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804356701] [2024-06-27 18:41:45,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:45,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:45,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:45,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:45,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 361 transitions, 6581 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:45,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:45,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:45,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:45,939 INFO L124 PetriNetUnfolderBase]: 1736/2930 cut-off events. [2024-06-27 18:41:45,939 INFO L125 PetriNetUnfolderBase]: For 101218/101218 co-relation queries the response was YES. [2024-06-27 18:41:45,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24184 conditions, 2930 events. 1736/2930 cut-off events. For 101218/101218 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 17019 event pairs, 423 based on Foata normal form. 1/2878 useless extension candidates. Maximal degree in co-relation 24067. Up to 2461 conditions per place. [2024-06-27 18:41:45,968 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 354 selfloop transitions, 51 changer transitions 0/411 dead transitions. [2024-06-27 18:41:45,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 411 transitions, 8215 flow [2024-06-27 18:41:45,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:45,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:41:45,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:41:45,969 INFO L175 Difference]: Start difference. First operand has 260 places, 361 transitions, 6581 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:41:45,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 411 transitions, 8215 flow [2024-06-27 18:41:46,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 411 transitions, 7933 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:41:46,288 INFO L231 Difference]: Finished difference. Result has 261 places, 365 transitions, 6512 flow [2024-06-27 18:41:46,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6512, PETRI_PLACES=261, PETRI_TRANSITIONS=365} [2024-06-27 18:41:46,289 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 220 predicate places. [2024-06-27 18:41:46,289 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 365 transitions, 6512 flow [2024-06-27 18:41:46,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:46,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:46,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:46,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:41:46,290 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:46,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:46,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1991871969, now seen corresponding path program 10 times [2024-06-27 18:41:46,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:46,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449567001] [2024-06-27 18:41:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:46,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:46,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:46,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449567001] [2024-06-27 18:41:46,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449567001] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:46,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:46,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:46,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040232315] [2024-06-27 18:41:46,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:46,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:46,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:46,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:46,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:47,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:47,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 365 transitions, 6512 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:47,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:47,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:47,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:47,834 INFO L124 PetriNetUnfolderBase]: 1782/3028 cut-off events. [2024-06-27 18:41:47,834 INFO L125 PetriNetUnfolderBase]: For 102948/102948 co-relation queries the response was YES. [2024-06-27 18:41:47,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24659 conditions, 3028 events. 1782/3028 cut-off events. For 102948/102948 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17708 event pairs, 328 based on Foata normal form. 2/2963 useless extension candidates. Maximal degree in co-relation 24542. Up to 1802 conditions per place. [2024-06-27 18:41:47,857 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 242 selfloop transitions, 173 changer transitions 0/421 dead transitions. [2024-06-27 18:41:47,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 421 transitions, 8330 flow [2024-06-27 18:41:47,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:41:47,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 18:41:47,859 INFO L175 Difference]: Start difference. First operand has 261 places, 365 transitions, 6512 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:41:47,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 421 transitions, 8330 flow [2024-06-27 18:41:48,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 421 transitions, 8224 flow, removed 28 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:48,214 INFO L231 Difference]: Finished difference. Result has 268 places, 384 transitions, 7334 flow [2024-06-27 18:41:48,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6409, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7334, PETRI_PLACES=268, PETRI_TRANSITIONS=384} [2024-06-27 18:41:48,214 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 227 predicate places. [2024-06-27 18:41:48,214 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 384 transitions, 7334 flow [2024-06-27 18:41:48,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:48,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:48,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:48,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:41:48,215 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:48,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:48,215 INFO L85 PathProgramCache]: Analyzing trace with hash -640657841, now seen corresponding path program 10 times [2024-06-27 18:41:48,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:48,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461512819] [2024-06-27 18:41:48,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:48,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:49,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:49,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:49,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461512819] [2024-06-27 18:41:49,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461512819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:49,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:49,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:49,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112663165] [2024-06-27 18:41:49,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:49,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:49,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:49,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:49,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:49,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:41:49,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 384 transitions, 7334 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:49,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:49,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:41:49,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:49,792 INFO L124 PetriNetUnfolderBase]: 1604/2813 cut-off events. [2024-06-27 18:41:49,792 INFO L125 PetriNetUnfolderBase]: For 104848/104860 co-relation queries the response was YES. [2024-06-27 18:41:49,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24627 conditions, 2813 events. 1604/2813 cut-off events. For 104848/104860 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 17080 event pairs, 199 based on Foata normal form. 2/2741 useless extension candidates. Maximal degree in co-relation 24505. Up to 2154 conditions per place. [2024-06-27 18:41:49,821 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 282 selfloop transitions, 91 changer transitions 0/411 dead transitions. [2024-06-27 18:41:49,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 411 transitions, 8340 flow [2024-06-27 18:41:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:41:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:41:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:41:49,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 18:41:49,823 INFO L175 Difference]: Start difference. First operand has 268 places, 384 transitions, 7334 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:41:49,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 411 transitions, 8340 flow [2024-06-27 18:41:50,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 411 transitions, 8160 flow, removed 65 selfloop flow, removed 3 redundant places. [2024-06-27 18:41:50,244 INFO L231 Difference]: Finished difference. Result has 273 places, 386 transitions, 7419 flow [2024-06-27 18:41:50,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7156, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7419, PETRI_PLACES=273, PETRI_TRANSITIONS=386} [2024-06-27 18:41:50,244 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 232 predicate places. [2024-06-27 18:41:50,244 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 386 transitions, 7419 flow [2024-06-27 18:41:50,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:50,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:50,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:50,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:41:50,245 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:50,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:50,245 INFO L85 PathProgramCache]: Analyzing trace with hash -640651889, now seen corresponding path program 11 times [2024-06-27 18:41:50,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:50,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304920899] [2024-06-27 18:41:50,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:50,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:50,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:50,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304920899] [2024-06-27 18:41:50,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304920899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:50,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:50,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:50,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478801504] [2024-06-27 18:41:50,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:50,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:50,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:50,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:50,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:50,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:50,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 386 transitions, 7419 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:50,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:50,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:50,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:51,631 INFO L124 PetriNetUnfolderBase]: 1802/3061 cut-off events. [2024-06-27 18:41:51,631 INFO L125 PetriNetUnfolderBase]: For 108717/108717 co-relation queries the response was YES. [2024-06-27 18:41:51,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26070 conditions, 3061 events. 1802/3061 cut-off events. For 108717/108717 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 17958 event pairs, 330 based on Foata normal form. 2/2995 useless extension candidates. Maximal degree in co-relation 25946. Up to 1819 conditions per place. [2024-06-27 18:41:51,662 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 238 selfloop transitions, 184 changer transitions 0/428 dead transitions. [2024-06-27 18:41:51,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 428 transitions, 8934 flow [2024-06-27 18:41:51,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:51,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:41:51,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 18:41:51,663 INFO L175 Difference]: Start difference. First operand has 273 places, 386 transitions, 7419 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:41:51,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 428 transitions, 8934 flow [2024-06-27 18:41:52,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 428 transitions, 8687 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:52,054 INFO L231 Difference]: Finished difference. Result has 277 places, 396 transitions, 7814 flow [2024-06-27 18:41:52,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7172, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7814, PETRI_PLACES=277, PETRI_TRANSITIONS=396} [2024-06-27 18:41:52,054 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-27 18:41:52,055 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 396 transitions, 7814 flow [2024-06-27 18:41:52,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:52,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:52,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:52,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:41:52,055 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:52,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash -640450079, now seen corresponding path program 12 times [2024-06-27 18:41:52,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:52,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828395384] [2024-06-27 18:41:52,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:52,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:52,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:52,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:52,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828395384] [2024-06-27 18:41:52,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828395384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:52,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:52,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:52,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476123738] [2024-06-27 18:41:52,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:52,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:52,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:52,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:52,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:52,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:52,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 396 transitions, 7814 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:52,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:52,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:53,620 INFO L124 PetriNetUnfolderBase]: 1798/3055 cut-off events. [2024-06-27 18:41:53,620 INFO L125 PetriNetUnfolderBase]: For 109424/109424 co-relation queries the response was YES. [2024-06-27 18:41:53,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26279 conditions, 3055 events. 1798/3055 cut-off events. For 109424/109424 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17929 event pairs, 324 based on Foata normal form. 2/2989 useless extension candidates. Maximal degree in co-relation 26153. Up to 1816 conditions per place. [2024-06-27 18:41:53,648 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 244 selfloop transitions, 179 changer transitions 0/429 dead transitions. [2024-06-27 18:41:53,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 429 transitions, 9106 flow [2024-06-27 18:41:53,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:53,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:41:53,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 18:41:53,650 INFO L175 Difference]: Start difference. First operand has 277 places, 396 transitions, 7814 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:41:53,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 429 transitions, 9106 flow [2024-06-27 18:41:54,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 429 transitions, 8554 flow, removed 121 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:54,073 INFO L231 Difference]: Finished difference. Result has 281 places, 396 transitions, 7626 flow [2024-06-27 18:41:54,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7262, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7626, PETRI_PLACES=281, PETRI_TRANSITIONS=396} [2024-06-27 18:41:54,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 18:41:54,074 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 396 transitions, 7626 flow [2024-06-27 18:41:54,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:54,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:54,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:54,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:41:54,074 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:54,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:54,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2037398047, now seen corresponding path program 13 times [2024-06-27 18:41:54,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:54,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484685315] [2024-06-27 18:41:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:54,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:54,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:54,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:54,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:54,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484685315] [2024-06-27 18:41:54,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484685315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:54,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:54,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:54,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472530041] [2024-06-27 18:41:54,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:54,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:54,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:54,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:54,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:54,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:54,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 396 transitions, 7626 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:54,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:54,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:54,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:55,466 INFO L124 PetriNetUnfolderBase]: 1820/3082 cut-off events. [2024-06-27 18:41:55,467 INFO L125 PetriNetUnfolderBase]: For 107223/107223 co-relation queries the response was YES. [2024-06-27 18:41:55,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26288 conditions, 3082 events. 1820/3082 cut-off events. For 107223/107223 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 18094 event pairs, 215 based on Foata normal form. 2/3018 useless extension candidates. Maximal degree in co-relation 26161. Up to 1835 conditions per place. [2024-06-27 18:41:55,498 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 207 selfloop transitions, 220 changer transitions 0/433 dead transitions. [2024-06-27 18:41:55,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 433 transitions, 8951 flow [2024-06-27 18:41:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:55,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:55,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:41:55,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 18:41:55,500 INFO L175 Difference]: Start difference. First operand has 281 places, 396 transitions, 7626 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:41:55,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 433 transitions, 8951 flow [2024-06-27 18:41:55,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 433 transitions, 8597 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:41:55,966 INFO L231 Difference]: Finished difference. Result has 285 places, 402 transitions, 7861 flow [2024-06-27 18:41:55,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7282, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7861, PETRI_PLACES=285, PETRI_TRANSITIONS=402} [2024-06-27 18:41:55,966 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 18:41:55,966 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 402 transitions, 7861 flow [2024-06-27 18:41:55,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:55,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:55,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:55,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:41:55,967 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:55,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:55,967 INFO L85 PathProgramCache]: Analyzing trace with hash -2037071338, now seen corresponding path program 4 times [2024-06-27 18:41:55,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:55,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387299218] [2024-06-27 18:41:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:55,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:55,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:56,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387299218] [2024-06-27 18:41:56,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387299218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:56,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:56,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546822023] [2024-06-27 18:41:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:56,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:56,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:56,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:56,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 402 transitions, 7861 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:56,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:56,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:56,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:57,555 INFO L124 PetriNetUnfolderBase]: 1833/3106 cut-off events. [2024-06-27 18:41:57,556 INFO L125 PetriNetUnfolderBase]: For 114889/114889 co-relation queries the response was YES. [2024-06-27 18:41:57,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26789 conditions, 3106 events. 1833/3106 cut-off events. For 114889/114889 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 18247 event pairs, 580 based on Foata normal form. 1/3046 useless extension candidates. Maximal degree in co-relation 26660. Up to 2828 conditions per place. [2024-06-27 18:41:57,589 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 411 selfloop transitions, 22 changer transitions 0/439 dead transitions. [2024-06-27 18:41:57,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 439 transitions, 9150 flow [2024-06-27 18:41:57,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:57,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:57,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:41:57,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:41:57,591 INFO L175 Difference]: Start difference. First operand has 285 places, 402 transitions, 7861 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:41:57,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 439 transitions, 9150 flow [2024-06-27 18:41:58,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 439 transitions, 8701 flow, removed 53 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:58,032 INFO L231 Difference]: Finished difference. Result has 289 places, 404 transitions, 7512 flow [2024-06-27 18:41:58,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7423, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7512, PETRI_PLACES=289, PETRI_TRANSITIONS=404} [2024-06-27 18:41:58,032 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-27 18:41:58,032 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 404 transitions, 7512 flow [2024-06-27 18:41:58,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:58,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:58,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:58,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:41:58,033 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:58,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:58,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2037397768, now seen corresponding path program 5 times [2024-06-27 18:41:58,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:58,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225764766] [2024-06-27 18:41:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:58,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:58,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:41:58,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:58,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225764766] [2024-06-27 18:41:58,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225764766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:58,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:58,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:41:58,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748943694] [2024-06-27 18:41:58,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:58,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:41:58,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:58,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:41:58,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:41:58,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:58,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 404 transitions, 7512 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:58,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:58,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:58,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:59,450 INFO L124 PetriNetUnfolderBase]: 1846/3120 cut-off events. [2024-06-27 18:41:59,451 INFO L125 PetriNetUnfolderBase]: For 110420/110420 co-relation queries the response was YES. [2024-06-27 18:41:59,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26235 conditions, 3120 events. 1846/3120 cut-off events. For 110420/110420 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18343 event pairs, 429 based on Foata normal form. 1/3060 useless extension candidates. Maximal degree in co-relation 26105. Up to 2615 conditions per place. [2024-06-27 18:41:59,480 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 379 selfloop transitions, 70 changer transitions 0/455 dead transitions. [2024-06-27 18:41:59,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 455 transitions, 9256 flow [2024-06-27 18:41:59,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:41:59,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:41:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:41:59,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:41:59,481 INFO L175 Difference]: Start difference. First operand has 289 places, 404 transitions, 7512 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:41:59,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 455 transitions, 9256 flow [2024-06-27 18:41:59,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 455 transitions, 9187 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:59,910 INFO L231 Difference]: Finished difference. Result has 291 places, 406 transitions, 7629 flow [2024-06-27 18:41:59,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7443, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7629, PETRI_PLACES=291, PETRI_TRANSITIONS=406} [2024-06-27 18:41:59,911 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 18:41:59,911 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 406 transitions, 7629 flow [2024-06-27 18:41:59,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:59,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:59,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:59,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:41:59,912 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:41:59,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash 574788971, now seen corresponding path program 14 times [2024-06-27 18:41:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161116611] [2024-06-27 18:41:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:00,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:00,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161116611] [2024-06-27 18:42:00,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161116611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:00,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:00,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:00,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923785930] [2024-06-27 18:42:00,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:00,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:00,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:00,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:00,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:00,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:00,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 406 transitions, 7629 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:00,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:00,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:00,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:01,417 INFO L124 PetriNetUnfolderBase]: 1866/3161 cut-off events. [2024-06-27 18:42:01,417 INFO L125 PetriNetUnfolderBase]: For 110181/110181 co-relation queries the response was YES. [2024-06-27 18:42:01,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26650 conditions, 3161 events. 1866/3161 cut-off events. For 110181/110181 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 18650 event pairs, 230 based on Foata normal form. 2/3094 useless extension candidates. Maximal degree in co-relation 26519. Up to 1892 conditions per place. [2024-06-27 18:42:01,451 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 231 selfloop transitions, 204 changer transitions 0/441 dead transitions. [2024-06-27 18:42:01,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 441 transitions, 9034 flow [2024-06-27 18:42:01,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:01,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:42:01,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:42:01,453 INFO L175 Difference]: Start difference. First operand has 291 places, 406 transitions, 7629 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:42:01,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 441 transitions, 9034 flow [2024-06-27 18:42:01,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 441 transitions, 8890 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:01,989 INFO L231 Difference]: Finished difference. Result has 294 places, 409 transitions, 7978 flow [2024-06-27 18:42:01,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7485, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7978, PETRI_PLACES=294, PETRI_TRANSITIONS=409} [2024-06-27 18:42:01,990 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 253 predicate places. [2024-06-27 18:42:01,990 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 409 transitions, 7978 flow [2024-06-27 18:42:01,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:01,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:01,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:01,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:42:01,991 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:01,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1999022088, now seen corresponding path program 6 times [2024-06-27 18:42:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:01,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167497693] [2024-06-27 18:42:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:01,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:02,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167497693] [2024-06-27 18:42:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167497693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:02,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:02,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:02,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215296676] [2024-06-27 18:42:02,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:02,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:02,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:02,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:02,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:02,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 409 transitions, 7978 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:02,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:02,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:02,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:03,515 INFO L124 PetriNetUnfolderBase]: 1864/3147 cut-off events. [2024-06-27 18:42:03,516 INFO L125 PetriNetUnfolderBase]: For 116987/116987 co-relation queries the response was YES. [2024-06-27 18:42:03,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27024 conditions, 3147 events. 1864/3147 cut-off events. For 116987/116987 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18506 event pairs, 429 based on Foata normal form. 1/3087 useless extension candidates. Maximal degree in co-relation 26892. Up to 2643 conditions per place. [2024-06-27 18:42:03,548 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 387 selfloop transitions, 64 changer transitions 0/457 dead transitions. [2024-06-27 18:42:03,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 457 transitions, 9606 flow [2024-06-27 18:42:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:03,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:03,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:42:03,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:42:03,550 INFO L175 Difference]: Start difference. First operand has 294 places, 409 transitions, 7978 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:42:03,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 457 transitions, 9606 flow [2024-06-27 18:42:03,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 457 transitions, 9171 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:03,994 INFO L231 Difference]: Finished difference. Result has 297 places, 409 transitions, 7700 flow [2024-06-27 18:42:03,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7566, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7700, PETRI_PLACES=297, PETRI_TRANSITIONS=409} [2024-06-27 18:42:03,995 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-27 18:42:03,995 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 409 transitions, 7700 flow [2024-06-27 18:42:03,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:03,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:03,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:03,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:42:03,996 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:03,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1999021809, now seen corresponding path program 15 times [2024-06-27 18:42:03,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:03,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921167615] [2024-06-27 18:42:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:03,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:04,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921167615] [2024-06-27 18:42:04,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921167615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:04,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:04,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:42:04,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573207252] [2024-06-27 18:42:04,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:04,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:42:04,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:04,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:42:04,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:42:04,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:04,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 409 transitions, 7700 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:04,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:04,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:04,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:05,463 INFO L124 PetriNetUnfolderBase]: 1860/3152 cut-off events. [2024-06-27 18:42:05,463 INFO L125 PetriNetUnfolderBase]: For 108137/108137 co-relation queries the response was YES. [2024-06-27 18:42:05,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26296 conditions, 3152 events. 1860/3152 cut-off events. For 108137/108137 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 18645 event pairs, 229 based on Foata normal form. 2/3085 useless extension candidates. Maximal degree in co-relation 26163. Up to 1886 conditions per place. [2024-06-27 18:42:05,495 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 233 selfloop transitions, 202 changer transitions 0/441 dead transitions. [2024-06-27 18:42:05,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 441 transitions, 8924 flow [2024-06-27 18:42:05,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:05,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:42:05,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 18:42:05,496 INFO L175 Difference]: Start difference. First operand has 297 places, 409 transitions, 7700 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:42:05,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 441 transitions, 8924 flow [2024-06-27 18:42:06,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 441 transitions, 8687 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:06,058 INFO L231 Difference]: Finished difference. Result has 297 places, 409 transitions, 7874 flow [2024-06-27 18:42:06,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7463, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7874, PETRI_PLACES=297, PETRI_TRANSITIONS=409} [2024-06-27 18:42:06,058 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 256 predicate places. [2024-06-27 18:42:06,059 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 409 transitions, 7874 flow [2024-06-27 18:42:06,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:06,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:06,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:06,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:42:06,059 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:06,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash -2037059434, now seen corresponding path program 1 times [2024-06-27 18:42:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144618979] [2024-06-27 18:42:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:07,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:07,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144618979] [2024-06-27 18:42:07,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144618979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:07,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:07,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:07,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269130396] [2024-06-27 18:42:07,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:07,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:07,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:07,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:07,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:07,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:07,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 409 transitions, 7874 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:07,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:07,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:07,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:07,982 INFO L124 PetriNetUnfolderBase]: 1864/3167 cut-off events. [2024-06-27 18:42:07,982 INFO L125 PetriNetUnfolderBase]: For 119463/119463 co-relation queries the response was YES. [2024-06-27 18:42:08,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26669 conditions, 3167 events. 1864/3167 cut-off events. For 119463/119463 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 18688 event pairs, 575 based on Foata normal form. 2/3104 useless extension candidates. Maximal degree in co-relation 26535. Up to 2854 conditions per place. [2024-06-27 18:42:08,012 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 420 selfloop transitions, 25 changer transitions 0/451 dead transitions. [2024-06-27 18:42:08,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 451 transitions, 9206 flow [2024-06-27 18:42:08,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:08,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:42:08,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:42:08,013 INFO L175 Difference]: Start difference. First operand has 297 places, 409 transitions, 7874 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:42:08,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 451 transitions, 9206 flow [2024-06-27 18:42:08,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 451 transitions, 8784 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:08,399 INFO L231 Difference]: Finished difference. Result has 299 places, 411 transitions, 7579 flow [2024-06-27 18:42:08,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7458, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7579, PETRI_PLACES=299, PETRI_TRANSITIONS=411} [2024-06-27 18:42:08,399 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 18:42:08,399 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 411 transitions, 7579 flow [2024-06-27 18:42:08,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:08,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:08,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:08,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:42:08,400 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:08,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:08,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1715775969, now seen corresponding path program 1 times [2024-06-27 18:42:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:08,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940362038] [2024-06-27 18:42:08,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:08,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:08,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:08,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940362038] [2024-06-27 18:42:08,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940362038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:08,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:08,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:42:08,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273338426] [2024-06-27 18:42:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:08,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:42:08,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:08,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:42:08,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:42:08,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 18:42:08,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 411 transitions, 7579 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:08,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:08,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 18:42:08,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:08,754 INFO L124 PetriNetUnfolderBase]: 721/1487 cut-off events. [2024-06-27 18:42:08,754 INFO L125 PetriNetUnfolderBase]: For 74621/74916 co-relation queries the response was YES. [2024-06-27 18:42:08,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11541 conditions, 1487 events. 721/1487 cut-off events. For 74621/74916 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 9472 event pairs, 150 based on Foata normal form. 174/1544 useless extension candidates. Maximal degree in co-relation 11408. Up to 441 conditions per place. [2024-06-27 18:42:08,769 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 92 selfloop transitions, 55 changer transitions 0/268 dead transitions. [2024-06-27 18:42:08,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 268 transitions, 4993 flow [2024-06-27 18:42:08,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:42:08,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:42:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-06-27 18:42:08,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6824324324324325 [2024-06-27 18:42:08,770 INFO L175 Difference]: Start difference. First operand has 299 places, 411 transitions, 7579 flow. Second operand 4 states and 101 transitions. [2024-06-27 18:42:08,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 268 transitions, 4993 flow [2024-06-27 18:42:08,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 268 transitions, 3724 flow, removed 62 selfloop flow, removed 64 redundant places. [2024-06-27 18:42:08,951 INFO L231 Difference]: Finished difference. Result has 240 places, 250 transitions, 3475 flow [2024-06-27 18:42:08,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3475, PETRI_PLACES=240, PETRI_TRANSITIONS=250} [2024-06-27 18:42:08,952 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-27 18:42:08,952 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 250 transitions, 3475 flow [2024-06-27 18:42:08,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:08,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:08,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:08,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:42:08,953 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:08,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash -158891196, now seen corresponding path program 1 times [2024-06-27 18:42:08,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:08,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665877974] [2024-06-27 18:42:08,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:08,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:09,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:09,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665877974] [2024-06-27 18:42:09,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665877974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:09,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:09,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:09,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823772821] [2024-06-27 18:42:09,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:09,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:09,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:09,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:09,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:09,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:09,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 250 transitions, 3475 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:09,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:09,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:09,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:10,274 INFO L124 PetriNetUnfolderBase]: 1149/2029 cut-off events. [2024-06-27 18:42:10,274 INFO L125 PetriNetUnfolderBase]: For 60818/60818 co-relation queries the response was YES. [2024-06-27 18:42:10,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14136 conditions, 2029 events. 1149/2029 cut-off events. For 60818/60818 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11041 event pairs, 248 based on Foata normal form. 2/1942 useless extension candidates. Maximal degree in co-relation 14024. Up to 1734 conditions per place. [2024-06-27 18:42:10,290 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 231 selfloop transitions, 41 changer transitions 0/279 dead transitions. [2024-06-27 18:42:10,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 279 transitions, 4211 flow [2024-06-27 18:42:10,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:10,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:42:10,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 18:42:10,292 INFO L175 Difference]: Start difference. First operand has 240 places, 250 transitions, 3475 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:42:10,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 279 transitions, 4211 flow [2024-06-27 18:42:10,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 279 transitions, 4150 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:10,516 INFO L231 Difference]: Finished difference. Result has 246 places, 252 transitions, 3571 flow [2024-06-27 18:42:10,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3422, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3571, PETRI_PLACES=246, PETRI_TRANSITIONS=252} [2024-06-27 18:42:10,520 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-27 18:42:10,520 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 252 transitions, 3571 flow [2024-06-27 18:42:10,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:10,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:10,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:10,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:42:10,520 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:10,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1156952766, now seen corresponding path program 2 times [2024-06-27 18:42:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498267118] [2024-06-27 18:42:10,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:10,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:11,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:11,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498267118] [2024-06-27 18:42:11,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498267118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:11,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:11,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:11,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353789538] [2024-06-27 18:42:11,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:11,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:11,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:11,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:11,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 252 transitions, 3571 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:11,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:11,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:11,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:12,010 INFO L124 PetriNetUnfolderBase]: 1175/2077 cut-off events. [2024-06-27 18:42:12,010 INFO L125 PetriNetUnfolderBase]: For 63576/63576 co-relation queries the response was YES. [2024-06-27 18:42:12,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14524 conditions, 2077 events. 1175/2077 cut-off events. For 63576/63576 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 11435 event pairs, 316 based on Foata normal form. 2/1989 useless extension candidates. Maximal degree in co-relation 14410. Up to 1772 conditions per place. [2024-06-27 18:42:12,029 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 234 selfloop transitions, 44 changer transitions 0/285 dead transitions. [2024-06-27 18:42:12,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 285 transitions, 4389 flow [2024-06-27 18:42:12,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:12,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:42:12,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:42:12,030 INFO L175 Difference]: Start difference. First operand has 246 places, 252 transitions, 3571 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:42:12,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 285 transitions, 4389 flow [2024-06-27 18:42:12,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 285 transitions, 4206 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:12,257 INFO L231 Difference]: Finished difference. Result has 248 places, 256 transitions, 3615 flow [2024-06-27 18:42:12,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3442, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3615, PETRI_PLACES=248, PETRI_TRANSITIONS=256} [2024-06-27 18:42:12,258 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 207 predicate places. [2024-06-27 18:42:12,258 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 256 transitions, 3615 flow [2024-06-27 18:42:12,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:12,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:12,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:12,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:42:12,259 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:12,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash -196358482, now seen corresponding path program 3 times [2024-06-27 18:42:12,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:12,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757995690] [2024-06-27 18:42:12,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:12,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:13,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:13,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757995690] [2024-06-27 18:42:13,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757995690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:13,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:13,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658236392] [2024-06-27 18:42:13,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:13,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:13,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:13,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:13,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:13,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 256 transitions, 3615 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:13,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:13,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:13,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:13,694 INFO L124 PetriNetUnfolderBase]: 1208/2134 cut-off events. [2024-06-27 18:42:13,694 INFO L125 PetriNetUnfolderBase]: For 66212/66212 co-relation queries the response was YES. [2024-06-27 18:42:13,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14852 conditions, 2134 events. 1208/2134 cut-off events. For 66212/66212 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 11828 event pairs, 207 based on Foata normal form. 2/2045 useless extension candidates. Maximal degree in co-relation 14737. Up to 1769 conditions per place. [2024-06-27 18:42:13,712 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 235 selfloop transitions, 50 changer transitions 0/292 dead transitions. [2024-06-27 18:42:13,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 292 transitions, 4475 flow [2024-06-27 18:42:13,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:13,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:13,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:42:13,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:42:13,714 INFO L175 Difference]: Start difference. First operand has 248 places, 256 transitions, 3615 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:42:13,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 292 transitions, 4475 flow [2024-06-27 18:42:13,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 292 transitions, 4288 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:13,957 INFO L231 Difference]: Finished difference. Result has 250 places, 262 transitions, 3693 flow [2024-06-27 18:42:13,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3693, PETRI_PLACES=250, PETRI_TRANSITIONS=262} [2024-06-27 18:42:13,957 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 209 predicate places. [2024-06-27 18:42:13,957 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 262 transitions, 3693 flow [2024-06-27 18:42:13,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:13,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:13,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:13,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:42:13,958 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:13,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:13,958 INFO L85 PathProgramCache]: Analyzing trace with hash -924467646, now seen corresponding path program 4 times [2024-06-27 18:42:13,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:13,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474541221] [2024-06-27 18:42:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:13,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:14,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:14,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:14,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474541221] [2024-06-27 18:42:14,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474541221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:14,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:14,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:14,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20246108] [2024-06-27 18:42:14,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:14,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:14,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:14,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:14,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:14,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:14,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 262 transitions, 3693 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:14,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:14,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:14,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:15,339 INFO L124 PetriNetUnfolderBase]: 1243/2197 cut-off events. [2024-06-27 18:42:15,339 INFO L125 PetriNetUnfolderBase]: For 72724/72724 co-relation queries the response was YES. [2024-06-27 18:42:15,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15460 conditions, 2197 events. 1243/2197 cut-off events. For 72724/72724 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 12299 event pairs, 353 based on Foata normal form. 2/2107 useless extension candidates. Maximal degree in co-relation 15344. Up to 1878 conditions per place. [2024-06-27 18:42:15,358 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 239 selfloop transitions, 48 changer transitions 0/294 dead transitions. [2024-06-27 18:42:15,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 294 transitions, 4659 flow [2024-06-27 18:42:15,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:15,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:42:15,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 18:42:15,360 INFO L175 Difference]: Start difference. First operand has 250 places, 262 transitions, 3693 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:42:15,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 294 transitions, 4659 flow [2024-06-27 18:42:15,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 294 transitions, 4516 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:15,612 INFO L231 Difference]: Finished difference. Result has 252 places, 266 transitions, 3792 flow [2024-06-27 18:42:15,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3550, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3792, PETRI_PLACES=252, PETRI_TRANSITIONS=266} [2024-06-27 18:42:15,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 18:42:15,613 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 266 transitions, 3792 flow [2024-06-27 18:42:15,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:15,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:15,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:15,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:42:15,613 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:15,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:15,614 INFO L85 PathProgramCache]: Analyzing trace with hash -924134520, now seen corresponding path program 2 times [2024-06-27 18:42:15,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:15,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732883818] [2024-06-27 18:42:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:15,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:15,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:16,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:16,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732883818] [2024-06-27 18:42:16,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732883818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:16,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:16,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:16,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393089607] [2024-06-27 18:42:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:16,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:16,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:16,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:16,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 266 transitions, 3792 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:16,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:16,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:16,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:16,964 INFO L124 PetriNetUnfolderBase]: 1243/2198 cut-off events. [2024-06-27 18:42:16,964 INFO L125 PetriNetUnfolderBase]: For 71304/71304 co-relation queries the response was YES. [2024-06-27 18:42:16,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15362 conditions, 2198 events. 1243/2198 cut-off events. For 71304/71304 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12262 event pairs, 363 based on Foata normal form. 1/2105 useless extension candidates. Maximal degree in co-relation 15245. Up to 1953 conditions per place. [2024-06-27 18:42:16,983 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 232 selfloop transitions, 52 changer transitions 0/291 dead transitions. [2024-06-27 18:42:16,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 291 transitions, 4514 flow [2024-06-27 18:42:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:16,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:16,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 149 transitions. [2024-06-27 18:42:16,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027027027027027 [2024-06-27 18:42:16,985 INFO L175 Difference]: Start difference. First operand has 252 places, 266 transitions, 3792 flow. Second operand 10 states and 149 transitions. [2024-06-27 18:42:16,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 291 transitions, 4514 flow [2024-06-27 18:42:17,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 291 transitions, 4367 flow, removed 46 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:17,248 INFO L231 Difference]: Finished difference. Result has 256 places, 268 transitions, 3807 flow [2024-06-27 18:42:17,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3645, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3807, PETRI_PLACES=256, PETRI_TRANSITIONS=268} [2024-06-27 18:42:17,248 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-27 18:42:17,248 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 268 transitions, 3807 flow [2024-06-27 18:42:17,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:17,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:17,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:17,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:42:17,249 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:17,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash -924140286, now seen corresponding path program 5 times [2024-06-27 18:42:17,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:17,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869105563] [2024-06-27 18:42:17,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:17,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:17,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:17,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:17,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869105563] [2024-06-27 18:42:17,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869105563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:17,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:17,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:17,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095634448] [2024-06-27 18:42:17,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:17,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:17,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:17,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:17,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:18,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:18,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 268 transitions, 3807 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:18,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:18,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:18,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:18,497 INFO L124 PetriNetUnfolderBase]: 1240/2193 cut-off events. [2024-06-27 18:42:18,497 INFO L125 PetriNetUnfolderBase]: For 69385/69385 co-relation queries the response was YES. [2024-06-27 18:42:18,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15153 conditions, 2193 events. 1240/2193 cut-off events. For 69385/69385 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12242 event pairs, 363 based on Foata normal form. 2/2102 useless extension candidates. Maximal degree in co-relation 15034. Up to 1944 conditions per place. [2024-06-27 18:42:18,516 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 240 selfloop transitions, 46 changer transitions 0/293 dead transitions. [2024-06-27 18:42:18,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 293 transitions, 4505 flow [2024-06-27 18:42:18,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:18,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2024-06-27 18:42:18,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4081081081081081 [2024-06-27 18:42:18,517 INFO L175 Difference]: Start difference. First operand has 256 places, 268 transitions, 3807 flow. Second operand 10 states and 151 transitions. [2024-06-27 18:42:18,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 293 transitions, 4505 flow [2024-06-27 18:42:18,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 293 transitions, 4277 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 18:42:18,809 INFO L231 Difference]: Finished difference. Result has 256 places, 268 transitions, 3679 flow [2024-06-27 18:42:18,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3579, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3679, PETRI_PLACES=256, PETRI_TRANSITIONS=268} [2024-06-27 18:42:18,809 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 215 predicate places. [2024-06-27 18:42:18,809 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 268 transitions, 3679 flow [2024-06-27 18:42:18,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:18,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:18,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:42:18,810 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:18,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 476829356, now seen corresponding path program 1 times [2024-06-27 18:42:18,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:18,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761389634] [2024-06-27 18:42:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:18,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:19,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:19,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761389634] [2024-06-27 18:42:19,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761389634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:19,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:19,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:19,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746499549] [2024-06-27 18:42:19,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:19,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:19,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:19,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:19,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:19,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 268 transitions, 3679 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:19,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:19,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:19,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:19,949 INFO L124 PetriNetUnfolderBase]: 1251/2206 cut-off events. [2024-06-27 18:42:19,949 INFO L125 PetriNetUnfolderBase]: For 69090/69090 co-relation queries the response was YES. [2024-06-27 18:42:19,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15104 conditions, 2206 events. 1251/2206 cut-off events. For 69090/69090 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 12298 event pairs, 322 based on Foata normal form. 2/2114 useless extension candidates. Maximal degree in co-relation 14984. Up to 1968 conditions per place. [2024-06-27 18:42:19,968 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 246 selfloop transitions, 43 changer transitions 0/296 dead transitions. [2024-06-27 18:42:19,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 296 transitions, 4429 flow [2024-06-27 18:42:19,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 18:42:19,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-06-27 18:42:19,970 INFO L175 Difference]: Start difference. First operand has 256 places, 268 transitions, 3679 flow. Second operand 11 states and 161 transitions. [2024-06-27 18:42:19,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 296 transitions, 4429 flow [2024-06-27 18:42:20,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 296 transitions, 4312 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:42:20,237 INFO L231 Difference]: Finished difference. Result has 257 places, 270 transitions, 3698 flow [2024-06-27 18:42:20,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3562, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3698, PETRI_PLACES=257, PETRI_TRANSITIONS=270} [2024-06-27 18:42:20,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 18:42:20,238 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 270 transitions, 3698 flow [2024-06-27 18:42:20,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:20,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:20,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:20,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:42:20,239 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:20,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1351661732, now seen corresponding path program 6 times [2024-06-27 18:42:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253911843] [2024-06-27 18:42:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:20,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:21,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:21,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:21,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253911843] [2024-06-27 18:42:21,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253911843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:21,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:21,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:21,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147200605] [2024-06-27 18:42:21,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:21,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:21,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:21,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:21,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:21,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:21,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 270 transitions, 3698 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:21,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:21,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:21,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:21,729 INFO L124 PetriNetUnfolderBase]: 1306/2304 cut-off events. [2024-06-27 18:42:21,729 INFO L125 PetriNetUnfolderBase]: For 76986/76986 co-relation queries the response was YES. [2024-06-27 18:42:21,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15956 conditions, 2304 events. 1306/2304 cut-off events. For 76986/76986 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13028 event pairs, 322 based on Foata normal form. 2/2212 useless extension candidates. Maximal degree in co-relation 15835. Up to 1971 conditions per place. [2024-06-27 18:42:21,749 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 246 selfloop transitions, 51 changer transitions 0/304 dead transitions. [2024-06-27 18:42:21,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 304 transitions, 4708 flow [2024-06-27 18:42:21,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:21,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:21,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:42:21,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:42:21,750 INFO L175 Difference]: Start difference. First operand has 257 places, 270 transitions, 3698 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:42:21,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 304 transitions, 4708 flow [2024-06-27 18:42:22,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 304 transitions, 4600 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:22,060 INFO L231 Difference]: Finished difference. Result has 260 places, 278 transitions, 3892 flow [2024-06-27 18:42:22,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3892, PETRI_PLACES=260, PETRI_TRANSITIONS=278} [2024-06-27 18:42:22,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 18:42:22,063 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 278 transitions, 3892 flow [2024-06-27 18:42:22,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:22,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:22,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:22,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:42:22,064 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:22,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1419168864, now seen corresponding path program 7 times [2024-06-27 18:42:22,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:22,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117572451] [2024-06-27 18:42:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:22,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:22,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:22,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117572451] [2024-06-27 18:42:22,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117572451] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:22,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:22,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:22,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398597011] [2024-06-27 18:42:22,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:22,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:22,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:22,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:22,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:22,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:22,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 278 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:22,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:22,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:22,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:23,517 INFO L124 PetriNetUnfolderBase]: 1303/2299 cut-off events. [2024-06-27 18:42:23,517 INFO L125 PetriNetUnfolderBase]: For 75891/75891 co-relation queries the response was YES. [2024-06-27 18:42:23,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15948 conditions, 2299 events. 1303/2299 cut-off events. For 75891/75891 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 12986 event pairs, 335 based on Foata normal form. 2/2205 useless extension candidates. Maximal degree in co-relation 15825. Up to 2045 conditions per place. [2024-06-27 18:42:23,537 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 247 selfloop transitions, 47 changer transitions 0/301 dead transitions. [2024-06-27 18:42:23,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 301 transitions, 4594 flow [2024-06-27 18:42:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:23,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:42:23,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-27 18:42:23,538 INFO L175 Difference]: Start difference. First operand has 260 places, 278 transitions, 3892 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:42:23,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 301 transitions, 4594 flow [2024-06-27 18:42:23,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 301 transitions, 4415 flow, removed 63 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:23,842 INFO L231 Difference]: Finished difference. Result has 264 places, 278 transitions, 3817 flow [2024-06-27 18:42:23,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3713, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3817, PETRI_PLACES=264, PETRI_TRANSITIONS=278} [2024-06-27 18:42:23,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-27 18:42:23,843 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 278 transitions, 3817 flow [2024-06-27 18:42:23,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:23,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:23,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:23,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:42:23,843 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:23,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:23,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1414520290, now seen corresponding path program 2 times [2024-06-27 18:42:23,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:23,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209856456] [2024-06-27 18:42:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:23,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:24,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:24,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209856456] [2024-06-27 18:42:24,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209856456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:24,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:24,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:24,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470528990] [2024-06-27 18:42:24,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:24,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:24,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:24,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:24,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:24,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:24,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 278 transitions, 3817 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:24,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:24,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:24,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:25,105 INFO L124 PetriNetUnfolderBase]: 1317/2322 cut-off events. [2024-06-27 18:42:25,105 INFO L125 PetriNetUnfolderBase]: For 75173/75173 co-relation queries the response was YES. [2024-06-27 18:42:25,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15941 conditions, 2322 events. 1317/2322 cut-off events. For 75173/75173 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13150 event pairs, 337 based on Foata normal form. 2/2224 useless extension candidates. Maximal degree in co-relation 15816. Up to 2081 conditions per place. [2024-06-27 18:42:25,124 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 254 selfloop transitions, 45 changer transitions 0/306 dead transitions. [2024-06-27 18:42:25,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 306 transitions, 4591 flow [2024-06-27 18:42:25,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:25,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-27 18:42:25,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39803439803439805 [2024-06-27 18:42:25,125 INFO L175 Difference]: Start difference. First operand has 264 places, 278 transitions, 3817 flow. Second operand 11 states and 162 transitions. [2024-06-27 18:42:25,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 306 transitions, 4591 flow [2024-06-27 18:42:25,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 306 transitions, 4499 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:25,446 INFO L231 Difference]: Finished difference. Result has 267 places, 282 transitions, 3887 flow [2024-06-27 18:42:25,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3725, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3887, PETRI_PLACES=267, PETRI_TRANSITIONS=282} [2024-06-27 18:42:25,447 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 226 predicate places. [2024-06-27 18:42:25,447 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 282 transitions, 3887 flow [2024-06-27 18:42:25,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:25,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:25,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:25,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:42:25,448 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:25,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:25,448 INFO L85 PathProgramCache]: Analyzing trace with hash -2101506520, now seen corresponding path program 8 times [2024-06-27 18:42:25,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:25,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744201825] [2024-06-27 18:42:25,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:25,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:26,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:26,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744201825] [2024-06-27 18:42:26,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744201825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:26,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:26,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:26,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346506563] [2024-06-27 18:42:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:26,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:26,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:26,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:26,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 282 transitions, 3887 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:26,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:26,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:26,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:26,794 INFO L124 PetriNetUnfolderBase]: 1333/2350 cut-off events. [2024-06-27 18:42:26,794 INFO L125 PetriNetUnfolderBase]: For 78484/78484 co-relation queries the response was YES. [2024-06-27 18:42:26,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16282 conditions, 2350 events. 1333/2350 cut-off events. For 78484/78484 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 13299 event pairs, 323 based on Foata normal form. 2/2252 useless extension candidates. Maximal degree in co-relation 16156. Up to 2035 conditions per place. [2024-06-27 18:42:26,814 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 240 selfloop transitions, 61 changer transitions 0/308 dead transitions. [2024-06-27 18:42:26,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 308 transitions, 4691 flow [2024-06-27 18:42:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:42:26,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 18:42:26,816 INFO L175 Difference]: Start difference. First operand has 267 places, 282 transitions, 3887 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:42:26,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 308 transitions, 4691 flow [2024-06-27 18:42:27,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 308 transitions, 4598 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:27,142 INFO L231 Difference]: Finished difference. Result has 270 places, 284 transitions, 4001 flow [2024-06-27 18:42:27,142 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3794, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4001, PETRI_PLACES=270, PETRI_TRANSITIONS=284} [2024-06-27 18:42:27,142 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 229 predicate places. [2024-06-27 18:42:27,142 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 284 transitions, 4001 flow [2024-06-27 18:42:27,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:27,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:27,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:27,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:42:27,143 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:27,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:27,143 INFO L85 PathProgramCache]: Analyzing trace with hash -903921794, now seen corresponding path program 3 times [2024-06-27 18:42:27,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:27,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648993426] [2024-06-27 18:42:27,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:27,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:27,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:27,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648993426] [2024-06-27 18:42:27,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648993426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:27,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:27,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:27,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447180254] [2024-06-27 18:42:27,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:27,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:27,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:27,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:27,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:27,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:27,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 284 transitions, 4001 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:27,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:27,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:27,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:28,308 INFO L124 PetriNetUnfolderBase]: 1416/2475 cut-off events. [2024-06-27 18:42:28,308 INFO L125 PetriNetUnfolderBase]: For 103148/103148 co-relation queries the response was YES. [2024-06-27 18:42:28,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17957 conditions, 2475 events. 1416/2475 cut-off events. For 103148/103148 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14083 event pairs, 321 based on Foata normal form. 2/2366 useless extension candidates. Maximal degree in co-relation 17830. Up to 1942 conditions per place. [2024-06-27 18:42:28,329 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 232 selfloop transitions, 81 changer transitions 0/320 dead transitions. [2024-06-27 18:42:28,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 320 transitions, 5215 flow [2024-06-27 18:42:28,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:28,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:42:28,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 18:42:28,330 INFO L175 Difference]: Start difference. First operand has 270 places, 284 transitions, 4001 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:42:28,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 320 transitions, 5215 flow [2024-06-27 18:42:28,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 320 transitions, 5024 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:28,726 INFO L231 Difference]: Finished difference. Result has 275 places, 292 transitions, 4198 flow [2024-06-27 18:42:28,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3810, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4198, PETRI_PLACES=275, PETRI_TRANSITIONS=292} [2024-06-27 18:42:28,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 234 predicate places. [2024-06-27 18:42:28,727 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 292 transitions, 4198 flow [2024-06-27 18:42:28,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:28,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:28,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:28,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:42:28,728 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:28,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash -903913114, now seen corresponding path program 1 times [2024-06-27 18:42:28,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894856643] [2024-06-27 18:42:28,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:28,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:29,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:29,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894856643] [2024-06-27 18:42:29,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894856643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:29,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:29,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007467547] [2024-06-27 18:42:29,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:29,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:29,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:29,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:29,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 292 transitions, 4198 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:29,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:29,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:29,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:30,277 INFO L124 PetriNetUnfolderBase]: 1414/2476 cut-off events. [2024-06-27 18:42:30,277 INFO L125 PetriNetUnfolderBase]: For 100369/100369 co-relation queries the response was YES. [2024-06-27 18:42:30,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18060 conditions, 2476 events. 1414/2476 cut-off events. For 100369/100369 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 14133 event pairs, 436 based on Foata normal form. 1/2365 useless extension candidates. Maximal degree in co-relation 17930. Up to 2313 conditions per place. [2024-06-27 18:42:30,300 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 285 selfloop transitions, 21 changer transitions 0/313 dead transitions. [2024-06-27 18:42:30,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 313 transitions, 4923 flow [2024-06-27 18:42:30,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 18:42:30,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3759213759213759 [2024-06-27 18:42:30,301 INFO L175 Difference]: Start difference. First operand has 275 places, 292 transitions, 4198 flow. Second operand 11 states and 153 transitions. [2024-06-27 18:42:30,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 313 transitions, 4923 flow [2024-06-27 18:42:30,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 313 transitions, 4771 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:30,815 INFO L231 Difference]: Finished difference. Result has 278 places, 293 transitions, 4106 flow [2024-06-27 18:42:30,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4046, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4106, PETRI_PLACES=278, PETRI_TRANSITIONS=293} [2024-06-27 18:42:30,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 237 predicate places. [2024-06-27 18:42:30,815 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 293 transitions, 4106 flow [2024-06-27 18:42:30,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:30,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:30,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:30,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:42:30,816 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:30,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash -2107935610, now seen corresponding path program 9 times [2024-06-27 18:42:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:30,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363846637] [2024-06-27 18:42:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:30,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:31,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:31,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:31,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363846637] [2024-06-27 18:42:31,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363846637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:31,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:31,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:31,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702326245] [2024-06-27 18:42:31,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:31,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:31,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:31,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:31,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:31,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:31,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 293 transitions, 4106 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:31,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:31,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:31,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:32,369 INFO L124 PetriNetUnfolderBase]: 1430/2500 cut-off events. [2024-06-27 18:42:32,370 INFO L125 PetriNetUnfolderBase]: For 103975/103975 co-relation queries the response was YES. [2024-06-27 18:42:32,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18218 conditions, 2500 events. 1430/2500 cut-off events. For 103975/103975 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 14235 event pairs, 345 based on Foata normal form. 2/2392 useless extension candidates. Maximal degree in co-relation 18086. Up to 2185 conditions per place. [2024-06-27 18:42:32,393 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 257 selfloop transitions, 55 changer transitions 0/319 dead transitions. [2024-06-27 18:42:32,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 319 transitions, 4936 flow [2024-06-27 18:42:32,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:32,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:42:32,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 18:42:32,394 INFO L175 Difference]: Start difference. First operand has 278 places, 293 transitions, 4106 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:42:32,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 319 transitions, 4936 flow [2024-06-27 18:42:32,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 319 transitions, 4877 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:32,842 INFO L231 Difference]: Finished difference. Result has 279 places, 295 transitions, 4246 flow [2024-06-27 18:42:32,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4047, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4246, PETRI_PLACES=279, PETRI_TRANSITIONS=295} [2024-06-27 18:42:32,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-27 18:42:32,843 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 295 transitions, 4246 flow [2024-06-27 18:42:32,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:32,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:32,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:32,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:42:32,843 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:32,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash -2101499576, now seen corresponding path program 4 times [2024-06-27 18:42:32,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:32,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983006398] [2024-06-27 18:42:32,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:32,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:33,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:33,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:33,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983006398] [2024-06-27 18:42:33,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983006398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:33,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:33,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:33,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584598095] [2024-06-27 18:42:33,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:33,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:33,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:33,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:33,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 295 transitions, 4246 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:33,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:33,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:33,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:34,139 INFO L124 PetriNetUnfolderBase]: 1441/2517 cut-off events. [2024-06-27 18:42:34,139 INFO L125 PetriNetUnfolderBase]: For 108818/108818 co-relation queries the response was YES. [2024-06-27 18:42:34,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18549 conditions, 2517 events. 1441/2517 cut-off events. For 108818/108818 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14360 event pairs, 336 based on Foata normal form. 2/2407 useless extension candidates. Maximal degree in co-relation 18416. Up to 1973 conditions per place. [2024-06-27 18:42:34,163 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 241 selfloop transitions, 77 changer transitions 0/325 dead transitions. [2024-06-27 18:42:34,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 325 transitions, 5361 flow [2024-06-27 18:42:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:42:34,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 18:42:34,164 INFO L175 Difference]: Start difference. First operand has 279 places, 295 transitions, 4246 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:42:34,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 325 transitions, 5361 flow [2024-06-27 18:42:34,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 325 transitions, 5178 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:34,643 INFO L231 Difference]: Finished difference. Result has 282 places, 297 transitions, 4275 flow [2024-06-27 18:42:34,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4063, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4275, PETRI_PLACES=282, PETRI_TRANSITIONS=297} [2024-06-27 18:42:34,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 241 predicate places. [2024-06-27 18:42:34,644 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 297 transitions, 4275 flow [2024-06-27 18:42:34,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:34,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:34,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:34,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:42:34,644 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:34,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2101260566, now seen corresponding path program 5 times [2024-06-27 18:42:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615666317] [2024-06-27 18:42:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:35,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:35,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:35,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615666317] [2024-06-27 18:42:35,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615666317] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:35,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:35,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:35,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424669022] [2024-06-27 18:42:35,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:35,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:35,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:35,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:35,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:35,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:35,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 297 transitions, 4275 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:35,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:35,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:35,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:35,990 INFO L124 PetriNetUnfolderBase]: 1433/2505 cut-off events. [2024-06-27 18:42:35,990 INFO L125 PetriNetUnfolderBase]: For 104782/104782 co-relation queries the response was YES. [2024-06-27 18:42:36,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18160 conditions, 2505 events. 1433/2505 cut-off events. For 104782/104782 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14305 event pairs, 331 based on Foata normal form. 4/2397 useless extension candidates. Maximal degree in co-relation 18026. Up to 1969 conditions per place. [2024-06-27 18:42:36,014 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 227 selfloop transitions, 90 changer transitions 0/324 dead transitions. [2024-06-27 18:42:36,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 324 transitions, 5201 flow [2024-06-27 18:42:36,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:36,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:42:36,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 18:42:36,015 INFO L175 Difference]: Start difference. First operand has 282 places, 297 transitions, 4275 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:42:36,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 324 transitions, 5201 flow [2024-06-27 18:42:36,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 324 transitions, 5011 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:36,526 INFO L231 Difference]: Finished difference. Result has 285 places, 297 transitions, 4272 flow [2024-06-27 18:42:36,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4085, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4272, PETRI_PLACES=285, PETRI_TRANSITIONS=297} [2024-06-27 18:42:36,527 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 244 predicate places. [2024-06-27 18:42:36,527 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 297 transitions, 4272 flow [2024-06-27 18:42:36,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:36,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:36,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:36,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:42:36,527 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:36,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash -2107940260, now seen corresponding path program 10 times [2024-06-27 18:42:36,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:36,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196596561] [2024-06-27 18:42:36,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:36,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:37,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:37,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:37,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196596561] [2024-06-27 18:42:37,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196596561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:37,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:37,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:37,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013996188] [2024-06-27 18:42:37,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:37,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:37,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:37,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:37,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:37,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:37,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 297 transitions, 4272 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:37,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:37,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:37,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:38,135 INFO L124 PetriNetUnfolderBase]: 1449/2533 cut-off events. [2024-06-27 18:42:38,135 INFO L125 PetriNetUnfolderBase]: For 102287/102287 co-relation queries the response was YES. [2024-06-27 18:42:38,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18387 conditions, 2533 events. 1449/2533 cut-off events. For 102287/102287 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 14520 event pairs, 346 based on Foata normal form. 2/2426 useless extension candidates. Maximal degree in co-relation 18252. Up to 2156 conditions per place. [2024-06-27 18:42:38,159 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 258 selfloop transitions, 60 changer transitions 0/325 dead transitions. [2024-06-27 18:42:38,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 325 transitions, 5130 flow [2024-06-27 18:42:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:38,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:42:38,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:42:38,161 INFO L175 Difference]: Start difference. First operand has 285 places, 297 transitions, 4272 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:42:38,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 325 transitions, 5130 flow [2024-06-27 18:42:38,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 325 transitions, 4964 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:38,612 INFO L231 Difference]: Finished difference. Result has 286 places, 299 transitions, 4319 flow [2024-06-27 18:42:38,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4106, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4319, PETRI_PLACES=286, PETRI_TRANSITIONS=299} [2024-06-27 18:42:38,613 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 245 predicate places. [2024-06-27 18:42:38,613 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 299 transitions, 4319 flow [2024-06-27 18:42:38,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:38,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:38,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:38,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:42:38,613 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:38,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:38,614 INFO L85 PathProgramCache]: Analyzing trace with hash -2107755686, now seen corresponding path program 6 times [2024-06-27 18:42:38,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:38,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378071035] [2024-06-27 18:42:38,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:38,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:39,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378071035] [2024-06-27 18:42:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378071035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:39,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:39,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:39,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071797837] [2024-06-27 18:42:39,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:39,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:39,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:39,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:39,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:39,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:39,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 299 transitions, 4319 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:39,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:39,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:39,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:39,875 INFO L124 PetriNetUnfolderBase]: 1453/2539 cut-off events. [2024-06-27 18:42:39,876 INFO L125 PetriNetUnfolderBase]: For 103225/103225 co-relation queries the response was YES. [2024-06-27 18:42:39,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18405 conditions, 2539 events. 1453/2539 cut-off events. For 103225/103225 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 14559 event pairs, 371 based on Foata normal form. 2/2428 useless extension candidates. Maximal degree in co-relation 18269. Up to 2001 conditions per place. [2024-06-27 18:42:39,901 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 248 selfloop transitions, 73 changer transitions 0/328 dead transitions. [2024-06-27 18:42:39,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 328 transitions, 5310 flow [2024-06-27 18:42:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:42:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:42:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:42:39,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 18:42:39,902 INFO L175 Difference]: Start difference. First operand has 286 places, 299 transitions, 4319 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:42:39,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 328 transitions, 5310 flow [2024-06-27 18:42:40,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 328 transitions, 5113 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:40,436 INFO L231 Difference]: Finished difference. Result has 289 places, 301 transitions, 4328 flow [2024-06-27 18:42:40,436 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4122, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4328, PETRI_PLACES=289, PETRI_TRANSITIONS=301} [2024-06-27 18:42:40,437 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 248 predicate places. [2024-06-27 18:42:40,437 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 301 transitions, 4328 flow [2024-06-27 18:42:40,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:40,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:40,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:40,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:42:40,452 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:40,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:40,452 INFO L85 PathProgramCache]: Analyzing trace with hash -153991110, now seen corresponding path program 11 times [2024-06-27 18:42:40,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:40,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406650422] [2024-06-27 18:42:40,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:40,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:41,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:41,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406650422] [2024-06-27 18:42:41,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406650422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:41,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:41,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:41,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045138619] [2024-06-27 18:42:41,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:41,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:41,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:41,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:41,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:41,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:41,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 301 transitions, 4328 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:41,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:41,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:41,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:41,891 INFO L124 PetriNetUnfolderBase]: 1469/2570 cut-off events. [2024-06-27 18:42:41,891 INFO L125 PetriNetUnfolderBase]: For 105779/105779 co-relation queries the response was YES. [2024-06-27 18:42:41,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18634 conditions, 2570 events. 1469/2570 cut-off events. For 105779/105779 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 14814 event pairs, 268 based on Foata normal form. 2/2461 useless extension candidates. Maximal degree in co-relation 18497. Up to 2021 conditions per place. [2024-06-27 18:42:41,914 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 258 selfloop transitions, 64 changer transitions 0/329 dead transitions. [2024-06-27 18:42:41,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 329 transitions, 5194 flow [2024-06-27 18:42:41,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 18:42:41,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42042042042042044 [2024-06-27 18:42:41,916 INFO L175 Difference]: Start difference. First operand has 289 places, 301 transitions, 4328 flow. Second operand 9 states and 140 transitions. [2024-06-27 18:42:41,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 329 transitions, 5194 flow [2024-06-27 18:42:42,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 329 transitions, 5051 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:42,470 INFO L231 Difference]: Finished difference. Result has 290 places, 303 transitions, 4428 flow [2024-06-27 18:42:42,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4428, PETRI_PLACES=290, PETRI_TRANSITIONS=303} [2024-06-27 18:42:42,470 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 249 predicate places. [2024-06-27 18:42:42,470 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 303 transitions, 4428 flow [2024-06-27 18:42:42,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:42,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:42,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:42:42,471 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:42,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:42,471 INFO L85 PathProgramCache]: Analyzing trace with hash -153870954, now seen corresponding path program 3 times [2024-06-27 18:42:42,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489149612] [2024-06-27 18:42:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:43,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:43,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489149612] [2024-06-27 18:42:43,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489149612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:43,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:43,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:43,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600472059] [2024-06-27 18:42:43,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:43,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:43,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:43,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:43,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:43,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:43,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 303 transitions, 4428 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:43,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:43,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:43,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:44,008 INFO L124 PetriNetUnfolderBase]: 1504/2628 cut-off events. [2024-06-27 18:42:44,008 INFO L125 PetriNetUnfolderBase]: For 104379/104379 co-relation queries the response was YES. [2024-06-27 18:42:44,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19526 conditions, 2628 events. 1504/2628 cut-off events. For 104379/104379 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 15209 event pairs, 382 based on Foata normal form. 1/2502 useless extension candidates. Maximal degree in co-relation 19388. Up to 2367 conditions per place. [2024-06-27 18:42:44,035 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 281 selfloop transitions, 68 changer transitions 0/356 dead transitions. [2024-06-27 18:42:44,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 356 transitions, 6087 flow [2024-06-27 18:42:44,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:44,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 146 transitions. [2024-06-27 18:42:44,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945945945945946 [2024-06-27 18:42:44,036 INFO L175 Difference]: Start difference. First operand has 290 places, 303 transitions, 4428 flow. Second operand 10 states and 146 transitions. [2024-06-27 18:42:44,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 356 transitions, 6087 flow [2024-06-27 18:42:44,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 356 transitions, 5856 flow, removed 53 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:44,563 INFO L231 Difference]: Finished difference. Result has 296 places, 336 transitions, 5299 flow [2024-06-27 18:42:44,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4215, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5299, PETRI_PLACES=296, PETRI_TRANSITIONS=336} [2024-06-27 18:42:44,564 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 18:42:44,564 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 336 transitions, 5299 flow [2024-06-27 18:42:44,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:44,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:44,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:44,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:42:44,565 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:44,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:44,565 INFO L85 PathProgramCache]: Analyzing trace with hash -682560996, now seen corresponding path program 12 times [2024-06-27 18:42:44,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:44,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146995169] [2024-06-27 18:42:44,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:44,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:45,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:45,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:45,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146995169] [2024-06-27 18:42:45,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146995169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:45,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:45,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:45,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400924480] [2024-06-27 18:42:45,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:45,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:45,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:45,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:45,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:45,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:45,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 336 transitions, 5299 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:45,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:45,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:45,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:46,135 INFO L124 PetriNetUnfolderBase]: 1520/2662 cut-off events. [2024-06-27 18:42:46,135 INFO L125 PetriNetUnfolderBase]: For 102066/102066 co-relation queries the response was YES. [2024-06-27 18:42:46,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19573 conditions, 2662 events. 1520/2662 cut-off events. For 102066/102066 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 15519 event pairs, 410 based on Foata normal form. 2/2541 useless extension candidates. Maximal degree in co-relation 19431. Up to 2262 conditions per place. [2024-06-27 18:42:46,163 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 267 selfloop transitions, 87 changer transitions 0/361 dead transitions. [2024-06-27 18:42:46,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 361 transitions, 6207 flow [2024-06-27 18:42:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 18:42:46,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2024-06-27 18:42:46,164 INFO L175 Difference]: Start difference. First operand has 296 places, 336 transitions, 5299 flow. Second operand 9 states and 137 transitions. [2024-06-27 18:42:46,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 361 transitions, 6207 flow [2024-06-27 18:42:46,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 361 transitions, 5866 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:46,768 INFO L231 Difference]: Finished difference. Result has 296 places, 338 transitions, 5238 flow [2024-06-27 18:42:46,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4958, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5238, PETRI_PLACES=296, PETRI_TRANSITIONS=338} [2024-06-27 18:42:46,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 18:42:46,769 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 338 transitions, 5238 flow [2024-06-27 18:42:46,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:46,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:46,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:42:46,770 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:46,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:46,771 INFO L85 PathProgramCache]: Analyzing trace with hash 2092982400, now seen corresponding path program 13 times [2024-06-27 18:42:46,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:46,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657294510] [2024-06-27 18:42:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:47,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:47,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:47,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657294510] [2024-06-27 18:42:47,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657294510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:47,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:47,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:47,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919811993] [2024-06-27 18:42:47,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:47,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:47,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:47,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:47,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:47,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:47,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 338 transitions, 5238 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:47,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:47,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:47,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:48,374 INFO L124 PetriNetUnfolderBase]: 1536/2690 cut-off events. [2024-06-27 18:42:48,375 INFO L125 PetriNetUnfolderBase]: For 105771/105771 co-relation queries the response was YES. [2024-06-27 18:42:48,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19925 conditions, 2690 events. 1536/2690 cut-off events. For 105771/105771 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 15704 event pairs, 382 based on Foata normal form. 2/2565 useless extension candidates. Maximal degree in co-relation 19782. Up to 2110 conditions per place. [2024-06-27 18:42:48,402 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 267 selfloop transitions, 91 changer transitions 0/365 dead transitions. [2024-06-27 18:42:48,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 365 transitions, 6170 flow [2024-06-27 18:42:48,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:48,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:48,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 18:42:48,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 18:42:48,404 INFO L175 Difference]: Start difference. First operand has 296 places, 338 transitions, 5238 flow. Second operand 9 states and 141 transitions. [2024-06-27 18:42:48,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 365 transitions, 6170 flow [2024-06-27 18:42:48,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 365 transitions, 5924 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 18:42:48,952 INFO L231 Difference]: Finished difference. Result has 296 places, 340 transitions, 5276 flow [2024-06-27 18:42:48,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5276, PETRI_PLACES=296, PETRI_TRANSITIONS=340} [2024-06-27 18:42:48,961 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 18:42:48,961 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 340 transitions, 5276 flow [2024-06-27 18:42:48,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:48,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:48,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:48,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:42:48,961 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:48,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:48,963 INFO L85 PathProgramCache]: Analyzing trace with hash -2114214782, now seen corresponding path program 7 times [2024-06-27 18:42:48,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:48,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060879751] [2024-06-27 18:42:48,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:48,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:49,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:49,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060879751] [2024-06-27 18:42:49,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060879751] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:49,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:49,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:49,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938494260] [2024-06-27 18:42:49,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:49,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:49,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:49,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 340 transitions, 5276 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:49,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:49,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:49,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:50,319 INFO L124 PetriNetUnfolderBase]: 1547/2703 cut-off events. [2024-06-27 18:42:50,320 INFO L125 PetriNetUnfolderBase]: For 104114/104114 co-relation queries the response was YES. [2024-06-27 18:42:50,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20032 conditions, 2703 events. 1547/2703 cut-off events. For 104114/104114 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 15775 event pairs, 371 based on Foata normal form. 2/2577 useless extension candidates. Maximal degree in co-relation 19890. Up to 2335 conditions per place. [2024-06-27 18:42:50,343 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 280 selfloop transitions, 79 changer transitions 0/366 dead transitions. [2024-06-27 18:42:50,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 366 transitions, 6178 flow [2024-06-27 18:42:50,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:50,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-27 18:42:50,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 18:42:50,345 INFO L175 Difference]: Start difference. First operand has 296 places, 340 transitions, 5276 flow. Second operand 10 states and 148 transitions. [2024-06-27 18:42:50,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 366 transitions, 6178 flow [2024-06-27 18:42:50,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 366 transitions, 5926 flow, removed 38 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:50,818 INFO L231 Difference]: Finished difference. Result has 298 places, 342 transitions, 5260 flow [2024-06-27 18:42:50,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5024, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5260, PETRI_PLACES=298, PETRI_TRANSITIONS=342} [2024-06-27 18:42:50,819 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 257 predicate places. [2024-06-27 18:42:50,819 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 342 transitions, 5260 flow [2024-06-27 18:42:50,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:50,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:50,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:50,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:42:50,820 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:50,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:50,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1493766284, now seen corresponding path program 14 times [2024-06-27 18:42:50,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:50,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785446651] [2024-06-27 18:42:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:50,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:51,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:51,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785446651] [2024-06-27 18:42:51,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785446651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:51,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:51,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:51,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653388562] [2024-06-27 18:42:51,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:51,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:51,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:51,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:51,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:51,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:51,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 342 transitions, 5260 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:51,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:51,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:51,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:52,284 INFO L124 PetriNetUnfolderBase]: 1563/2731 cut-off events. [2024-06-27 18:42:52,284 INFO L125 PetriNetUnfolderBase]: For 101721/101721 co-relation queries the response was YES. [2024-06-27 18:42:52,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20131 conditions, 2731 events. 1563/2731 cut-off events. For 101721/101721 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 15983 event pairs, 350 based on Foata normal form. 2/2605 useless extension candidates. Maximal degree in co-relation 19989. Up to 2298 conditions per place. [2024-06-27 18:42:52,312 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 262 selfloop transitions, 97 changer transitions 0/366 dead transitions. [2024-06-27 18:42:52,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 366 transitions, 6186 flow [2024-06-27 18:42:52,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:52,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 18:42:52,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-27 18:42:52,313 INFO L175 Difference]: Start difference. First operand has 298 places, 342 transitions, 5260 flow. Second operand 9 states and 138 transitions. [2024-06-27 18:42:52,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 366 transitions, 6186 flow [2024-06-27 18:42:52,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 366 transitions, 6002 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:52,845 INFO L231 Difference]: Finished difference. Result has 299 places, 344 transitions, 5370 flow [2024-06-27 18:42:52,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5076, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5370, PETRI_PLACES=299, PETRI_TRANSITIONS=344} [2024-06-27 18:42:52,846 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 18:42:52,846 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 344 transitions, 5370 flow [2024-06-27 18:42:52,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:52,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:52,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:52,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:42:52,847 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:52,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:52,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1494003868, now seen corresponding path program 8 times [2024-06-27 18:42:52,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:52,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247525474] [2024-06-27 18:42:52,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:52,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:53,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247525474] [2024-06-27 18:42:53,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247525474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:53,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:53,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554138551] [2024-06-27 18:42:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:53,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:53,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:53,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:53,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 344 transitions, 5370 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:53,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:53,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:53,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:54,323 INFO L124 PetriNetUnfolderBase]: 1646/2856 cut-off events. [2024-06-27 18:42:54,323 INFO L125 PetriNetUnfolderBase]: For 131581/131581 co-relation queries the response was YES. [2024-06-27 18:42:54,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22028 conditions, 2856 events. 1646/2856 cut-off events. For 131581/131581 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 16749 event pairs, 351 based on Foata normal form. 2/2718 useless extension candidates. Maximal degree in co-relation 21885. Up to 2018 conditions per place. [2024-06-27 18:42:54,351 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 233 selfloop transitions, 138 changer transitions 0/378 dead transitions. [2024-06-27 18:42:54,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 378 transitions, 6766 flow [2024-06-27 18:42:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:42:54,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 18:42:54,354 INFO L175 Difference]: Start difference. First operand has 299 places, 344 transitions, 5370 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:42:54,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 378 transitions, 6766 flow [2024-06-27 18:42:54,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 378 transitions, 6488 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:54,971 INFO L231 Difference]: Finished difference. Result has 304 places, 352 transitions, 5675 flow [2024-06-27 18:42:54,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5096, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5675, PETRI_PLACES=304, PETRI_TRANSITIONS=352} [2024-06-27 18:42:54,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 263 predicate places. [2024-06-27 18:42:54,972 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 352 transitions, 5675 flow [2024-06-27 18:42:54,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:54,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:54,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:54,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:42:54,973 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:54,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:54,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1494012548, now seen corresponding path program 2 times [2024-06-27 18:42:54,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:54,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875488425] [2024-06-27 18:42:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:54,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:54,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:55,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:55,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875488425] [2024-06-27 18:42:55,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875488425] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:55,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:55,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:55,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407361978] [2024-06-27 18:42:55,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:55,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:55,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:55,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:55,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:56,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:56,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 352 transitions, 5675 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:56,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:56,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:56,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:56,689 INFO L124 PetriNetUnfolderBase]: 1644/2857 cut-off events. [2024-06-27 18:42:56,689 INFO L125 PetriNetUnfolderBase]: For 125674/125674 co-relation queries the response was YES. [2024-06-27 18:42:56,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22242 conditions, 2857 events. 1644/2857 cut-off events. For 125674/125674 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 16792 event pairs, 496 based on Foata normal form. 1/2717 useless extension candidates. Maximal degree in co-relation 22096. Up to 2662 conditions per place. [2024-06-27 18:42:56,720 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 332 selfloop transitions, 32 changer transitions 0/371 dead transitions. [2024-06-27 18:42:56,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 371 transitions, 6512 flow [2024-06-27 18:42:56,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:42:56,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:42:56,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 140 transitions. [2024-06-27 18:42:56,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-27 18:42:56,721 INFO L175 Difference]: Start difference. First operand has 304 places, 352 transitions, 5675 flow. Second operand 10 states and 140 transitions. [2024-06-27 18:42:56,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 371 transitions, 6512 flow [2024-06-27 18:42:57,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 371 transitions, 6313 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:57,346 INFO L231 Difference]: Finished difference. Result has 309 places, 353 transitions, 5563 flow [2024-06-27 18:42:57,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5476, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5563, PETRI_PLACES=309, PETRI_TRANSITIONS=353} [2024-06-27 18:42:57,346 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 268 predicate places. [2024-06-27 18:42:57,346 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 353 transitions, 5563 flow [2024-06-27 18:42:57,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:57,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:57,347 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:57,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:42:57,347 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:57,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1288210852, now seen corresponding path program 15 times [2024-06-27 18:42:57,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:57,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327901739] [2024-06-27 18:42:57,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:57,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:57,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:58,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:58,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327901739] [2024-06-27 18:42:58,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327901739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:58,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:58,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:42:58,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513368337] [2024-06-27 18:42:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:58,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:42:58,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:42:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:42:58,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:58,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 353 transitions, 5563 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:58,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:58,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:58,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:58,890 INFO L124 PetriNetUnfolderBase]: 1660/2881 cut-off events. [2024-06-27 18:42:58,890 INFO L125 PetriNetUnfolderBase]: For 129331/129331 co-relation queries the response was YES. [2024-06-27 18:42:58,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22377 conditions, 2881 events. 1660/2881 cut-off events. For 129331/129331 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16906 event pairs, 382 based on Foata normal form. 2/2745 useless extension candidates. Maximal degree in co-relation 22229. Up to 2448 conditions per place. [2024-06-27 18:42:58,920 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 285 selfloop transitions, 85 changer transitions 0/377 dead transitions. [2024-06-27 18:42:58,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 377 transitions, 6511 flow [2024-06-27 18:42:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:42:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:42:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-27 18:42:58,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-06-27 18:42:58,922 INFO L175 Difference]: Start difference. First operand has 309 places, 353 transitions, 5563 flow. Second operand 9 states and 139 transitions. [2024-06-27 18:42:58,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 377 transitions, 6511 flow [2024-06-27 18:42:59,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 377 transitions, 6431 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:42:59,585 INFO L231 Difference]: Finished difference. Result has 310 places, 355 transitions, 5753 flow [2024-06-27 18:42:59,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5483, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5753, PETRI_PLACES=310, PETRI_TRANSITIONS=355} [2024-06-27 18:42:59,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-27 18:42:59,597 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 355 transitions, 5753 flow [2024-06-27 18:42:59,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:59,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:59,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:59,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:42:59,598 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:59,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1281774818, now seen corresponding path program 9 times [2024-06-27 18:42:59,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:59,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487736802] [2024-06-27 18:42:59,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:59,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:00,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:00,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487736802] [2024-06-27 18:43:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487736802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:00,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:00,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365864532] [2024-06-27 18:43:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:00,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:00,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:00,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:00,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 355 transitions, 5753 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:00,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:00,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:00,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:01,080 INFO L124 PetriNetUnfolderBase]: 1671/2898 cut-off events. [2024-06-27 18:43:01,080 INFO L125 PetriNetUnfolderBase]: For 134986/134986 co-relation queries the response was YES. [2024-06-27 18:43:01,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22793 conditions, 2898 events. 1671/2898 cut-off events. For 134986/134986 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 17011 event pairs, 368 based on Foata normal form. 2/2759 useless extension candidates. Maximal degree in co-relation 22644. Up to 2049 conditions per place. [2024-06-27 18:43:01,107 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 248 selfloop transitions, 128 changer transitions 0/383 dead transitions. [2024-06-27 18:43:01,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 383 transitions, 7018 flow [2024-06-27 18:43:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:01,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:43:01,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:43:01,109 INFO L175 Difference]: Start difference. First operand has 310 places, 355 transitions, 5753 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:43:01,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 383 transitions, 7018 flow [2024-06-27 18:43:01,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 383 transitions, 6764 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:01,768 INFO L231 Difference]: Finished difference. Result has 313 places, 357 transitions, 5832 flow [2024-06-27 18:43:01,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5503, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5832, PETRI_PLACES=313, PETRI_TRANSITIONS=357} [2024-06-27 18:43:01,769 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 272 predicate places. [2024-06-27 18:43:01,769 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 357 transitions, 5832 flow [2024-06-27 18:43:01,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:01,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:01,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:01,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:43:01,770 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:01,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:01,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1281535808, now seen corresponding path program 10 times [2024-06-27 18:43:01,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:01,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133574768] [2024-06-27 18:43:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:01,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133574768] [2024-06-27 18:43:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133574768] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:02,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:02,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522075428] [2024-06-27 18:43:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:02,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:02,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 357 transitions, 5832 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:02,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:02,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:02,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:03,195 INFO L124 PetriNetUnfolderBase]: 1663/2886 cut-off events. [2024-06-27 18:43:03,196 INFO L125 PetriNetUnfolderBase]: For 127436/127436 co-relation queries the response was YES. [2024-06-27 18:43:03,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22400 conditions, 2886 events. 1663/2886 cut-off events. For 127436/127436 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 16939 event pairs, 360 based on Foata normal form. 4/2749 useless extension candidates. Maximal degree in co-relation 22250. Up to 2045 conditions per place. [2024-06-27 18:43:03,225 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 221 selfloop transitions, 154 changer transitions 0/382 dead transitions. [2024-06-27 18:43:03,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 382 transitions, 6884 flow [2024-06-27 18:43:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:03,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:03,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:43:03,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 18:43:03,226 INFO L175 Difference]: Start difference. First operand has 313 places, 357 transitions, 5832 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:43:03,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 382 transitions, 6884 flow [2024-06-27 18:43:03,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 382 transitions, 6611 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:03,888 INFO L231 Difference]: Finished difference. Result has 316 places, 357 transitions, 5879 flow [2024-06-27 18:43:03,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5559, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5879, PETRI_PLACES=316, PETRI_TRANSITIONS=357} [2024-06-27 18:43:03,897 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 18:43:03,897 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 357 transitions, 5879 flow [2024-06-27 18:43:03,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:03,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:03,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:03,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:43:03,897 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:03,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:03,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1487332544, now seen corresponding path program 16 times [2024-06-27 18:43:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050649874] [2024-06-27 18:43:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:03,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:04,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050649874] [2024-06-27 18:43:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050649874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:04,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:04,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:04,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765544623] [2024-06-27 18:43:04,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:04,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:04,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:04,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:04,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 357 transitions, 5879 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:04,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:04,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:04,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:05,430 INFO L124 PetriNetUnfolderBase]: 1679/2915 cut-off events. [2024-06-27 18:43:05,430 INFO L125 PetriNetUnfolderBase]: For 124419/124419 co-relation queries the response was YES. [2024-06-27 18:43:05,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22697 conditions, 2915 events. 1679/2915 cut-off events. For 124419/124419 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 17189 event pairs, 370 based on Foata normal form. 2/2781 useless extension candidates. Maximal degree in co-relation 22546. Up to 2357 conditions per place. [2024-06-27 18:43:05,463 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 281 selfloop transitions, 95 changer transitions 0/383 dead transitions. [2024-06-27 18:43:05,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 383 transitions, 6851 flow [2024-06-27 18:43:05,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:05,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-27 18:43:05,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264264264264264 [2024-06-27 18:43:05,464 INFO L175 Difference]: Start difference. First operand has 316 places, 357 transitions, 5879 flow. Second operand 9 states and 142 transitions. [2024-06-27 18:43:05,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 383 transitions, 6851 flow [2024-06-27 18:43:06,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 383 transitions, 6559 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:06,131 INFO L231 Difference]: Finished difference. Result has 316 places, 359 transitions, 5877 flow [2024-06-27 18:43:06,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5877, PETRI_PLACES=316, PETRI_TRANSITIONS=359} [2024-06-27 18:43:06,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 18:43:06,132 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 359 transitions, 5877 flow [2024-06-27 18:43:06,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:06,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:06,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:06,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:43:06,132 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:06,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1288030928, now seen corresponding path program 11 times [2024-06-27 18:43:06,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:06,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690190625] [2024-06-27 18:43:06,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:06,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:06,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690190625] [2024-06-27 18:43:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690190625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:06,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:06,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353446887] [2024-06-27 18:43:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:06,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:06,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:06,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:06,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:06,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:06,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 359 transitions, 5877 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:06,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:06,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:06,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:07,591 INFO L124 PetriNetUnfolderBase]: 1683/2921 cut-off events. [2024-06-27 18:43:07,591 INFO L125 PetriNetUnfolderBase]: For 119282/119282 co-relation queries the response was YES. [2024-06-27 18:43:07,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22498 conditions, 2921 events. 1683/2921 cut-off events. For 119282/119282 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 17227 event pairs, 416 based on Foata normal form. 2/2780 useless extension candidates. Maximal degree in co-relation 22347. Up to 2077 conditions per place. [2024-06-27 18:43:07,622 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 260 selfloop transitions, 119 changer transitions 0/386 dead transitions. [2024-06-27 18:43:07,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 386 transitions, 6992 flow [2024-06-27 18:43:07,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:43:07,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:43:07,623 INFO L175 Difference]: Start difference. First operand has 316 places, 359 transitions, 5877 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:43:07,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 386 transitions, 6992 flow [2024-06-27 18:43:08,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 386 transitions, 6720 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:08,298 INFO L231 Difference]: Finished difference. Result has 319 places, 361 transitions, 5916 flow [2024-06-27 18:43:08,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5607, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5916, PETRI_PLACES=319, PETRI_TRANSITIONS=361} [2024-06-27 18:43:08,299 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 278 predicate places. [2024-06-27 18:43:08,299 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 361 transitions, 5916 flow [2024-06-27 18:43:08,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:08,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:08,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:08,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:43:08,300 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:08,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:08,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1611823914, now seen corresponding path program 17 times [2024-06-27 18:43:08,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:08,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438883606] [2024-06-27 18:43:08,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:09,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:09,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438883606] [2024-06-27 18:43:09,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438883606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:09,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:09,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:09,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134644148] [2024-06-27 18:43:09,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:09,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:09,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:09,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:09,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:09,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:09,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 361 transitions, 5916 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:09,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:09,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:09,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:09,892 INFO L124 PetriNetUnfolderBase]: 1699/2949 cut-off events. [2024-06-27 18:43:09,892 INFO L125 PetriNetUnfolderBase]: For 119261/119261 co-relation queries the response was YES. [2024-06-27 18:43:09,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22731 conditions, 2949 events. 1699/2949 cut-off events. For 119261/119261 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 17434 event pairs, 387 based on Foata normal form. 2/2809 useless extension candidates. Maximal degree in co-relation 22579. Up to 2465 conditions per place. [2024-06-27 18:43:09,922 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 285 selfloop transitions, 91 changer transitions 0/383 dead transitions. [2024-06-27 18:43:09,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 383 transitions, 6870 flow [2024-06-27 18:43:09,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:09,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:09,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 139 transitions. [2024-06-27 18:43:09,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174174174174174 [2024-06-27 18:43:09,923 INFO L175 Difference]: Start difference. First operand has 319 places, 361 transitions, 5916 flow. Second operand 9 states and 139 transitions. [2024-06-27 18:43:09,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 383 transitions, 6870 flow [2024-06-27 18:43:10,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 383 transitions, 6669 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:10,592 INFO L231 Difference]: Finished difference. Result has 321 places, 363 transitions, 5994 flow [2024-06-27 18:43:10,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5994, PETRI_PLACES=321, PETRI_TRANSITIONS=363} [2024-06-27 18:43:10,592 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 280 predicate places. [2024-06-27 18:43:10,593 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 363 transitions, 5994 flow [2024-06-27 18:43:10,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:10,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:10,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:10,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:43:10,593 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:10,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:10,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1611819264, now seen corresponding path program 18 times [2024-06-27 18:43:10,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:10,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482659060] [2024-06-27 18:43:10,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:10,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:11,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:11,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:11,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482659060] [2024-06-27 18:43:11,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482659060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:11,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:11,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:11,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284971845] [2024-06-27 18:43:11,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:11,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:11,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:11,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:11,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:11,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:11,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 363 transitions, 5994 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:11,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:11,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:11,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:12,181 INFO L124 PetriNetUnfolderBase]: 1718/2984 cut-off events. [2024-06-27 18:43:12,182 INFO L125 PetriNetUnfolderBase]: For 123551/123551 co-relation queries the response was YES. [2024-06-27 18:43:12,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23006 conditions, 2984 events. 1718/2984 cut-off events. For 123551/123551 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 17705 event pairs, 385 based on Foata normal form. 2/2844 useless extension candidates. Maximal degree in co-relation 22853. Up to 2429 conditions per place. [2024-06-27 18:43:12,213 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 287 selfloop transitions, 96 changer transitions 0/390 dead transitions. [2024-06-27 18:43:12,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 390 transitions, 7218 flow [2024-06-27 18:43:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:12,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 18:43:12,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-27 18:43:12,214 INFO L175 Difference]: Start difference. First operand has 321 places, 363 transitions, 5994 flow. Second operand 9 states and 143 transitions. [2024-06-27 18:43:12,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 390 transitions, 7218 flow [2024-06-27 18:43:12,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 390 transitions, 6955 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:12,934 INFO L231 Difference]: Finished difference. Result has 323 places, 367 transitions, 6116 flow [2024-06-27 18:43:12,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5731, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6116, PETRI_PLACES=323, PETRI_TRANSITIONS=367} [2024-06-27 18:43:12,934 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-27 18:43:12,934 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 367 transitions, 6116 flow [2024-06-27 18:43:12,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:12,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:12,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:12,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:43:12,935 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:12,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1612003838, now seen corresponding path program 12 times [2024-06-27 18:43:12,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:12,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42773173] [2024-06-27 18:43:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:12,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:13,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:13,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:13,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42773173] [2024-06-27 18:43:13,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42773173] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:13,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:13,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:13,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114604634] [2024-06-27 18:43:13,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:13,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:13,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:13,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:13,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 367 transitions, 6116 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:13,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:13,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:13,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:14,439 INFO L124 PetriNetUnfolderBase]: 1746/3025 cut-off events. [2024-06-27 18:43:14,440 INFO L125 PetriNetUnfolderBase]: For 131482/131483 co-relation queries the response was YES. [2024-06-27 18:43:14,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23415 conditions, 3025 events. 1746/3025 cut-off events. For 131482/131483 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 17916 event pairs, 445 based on Foata normal form. 2/2878 useless extension candidates. Maximal degree in co-relation 23261. Up to 1872 conditions per place. [2024-06-27 18:43:14,470 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 259 selfloop transitions, 134 changer transitions 0/400 dead transitions. [2024-06-27 18:43:14,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 400 transitions, 7671 flow [2024-06-27 18:43:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:14,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:43:14,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:43:14,471 INFO L175 Difference]: Start difference. First operand has 323 places, 367 transitions, 6116 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:43:14,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 400 transitions, 7671 flow [2024-06-27 18:43:15,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 400 transitions, 7453 flow, removed 54 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:15,120 INFO L231 Difference]: Finished difference. Result has 331 places, 373 transitions, 6384 flow [2024-06-27 18:43:15,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5898, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6384, PETRI_PLACES=331, PETRI_TRANSITIONS=373} [2024-06-27 18:43:15,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 18:43:15,121 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 373 transitions, 6384 flow [2024-06-27 18:43:15,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:15,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:15,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:15,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:43:15,121 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:15,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:15,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1618253004, now seen corresponding path program 19 times [2024-06-27 18:43:15,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:15,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199420762] [2024-06-27 18:43:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:15,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:16,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:16,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199420762] [2024-06-27 18:43:16,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199420762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:16,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:16,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:16,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221482526] [2024-06-27 18:43:16,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:16,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:16,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:16,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:16,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:16,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:16,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 373 transitions, 6384 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:16,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:16,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:16,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:16,751 INFO L124 PetriNetUnfolderBase]: 1762/3055 cut-off events. [2024-06-27 18:43:16,751 INFO L125 PetriNetUnfolderBase]: For 134308/134308 co-relation queries the response was YES. [2024-06-27 18:43:16,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24071 conditions, 3055 events. 1762/3055 cut-off events. For 134308/134308 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 18164 event pairs, 395 based on Foata normal form. 2/2908 useless extension candidates. Maximal degree in co-relation 23913. Up to 2568 conditions per place. [2024-06-27 18:43:16,783 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 299 selfloop transitions, 90 changer transitions 0/396 dead transitions. [2024-06-27 18:43:16,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 396 transitions, 7358 flow [2024-06-27 18:43:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 141 transitions. [2024-06-27 18:43:16,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42342342342342343 [2024-06-27 18:43:16,785 INFO L175 Difference]: Start difference. First operand has 331 places, 373 transitions, 6384 flow. Second operand 9 states and 141 transitions. [2024-06-27 18:43:16,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 396 transitions, 7358 flow [2024-06-27 18:43:17,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 396 transitions, 6891 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:17,527 INFO L231 Difference]: Finished difference. Result has 331 places, 375 transitions, 6182 flow [2024-06-27 18:43:17,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5917, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6182, PETRI_PLACES=331, PETRI_TRANSITIONS=375} [2024-06-27 18:43:17,527 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 18:43:17,527 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 375 transitions, 6182 flow [2024-06-27 18:43:17,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:17,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:17,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:43:17,528 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:17,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:17,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1618499268, now seen corresponding path program 3 times [2024-06-27 18:43:17,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:17,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246449277] [2024-06-27 18:43:17,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:17,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:18,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:18,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246449277] [2024-06-27 18:43:18,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246449277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:18,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:18,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945430583] [2024-06-27 18:43:18,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:18,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:18,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:18,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:18,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 375 transitions, 6182 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:18,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:18,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:18,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:19,429 INFO L124 PetriNetUnfolderBase]: 1768/3068 cut-off events. [2024-06-27 18:43:19,430 INFO L125 PetriNetUnfolderBase]: For 130503/130503 co-relation queries the response was YES. [2024-06-27 18:43:19,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23564 conditions, 3068 events. 1768/3068 cut-off events. For 130503/130503 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 18296 event pairs, 529 based on Foata normal form. 1/2916 useless extension candidates. Maximal degree in co-relation 23407. Up to 2804 conditions per place. [2024-06-27 18:43:19,461 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 342 selfloop transitions, 44 changer transitions 0/393 dead transitions. [2024-06-27 18:43:19,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 393 transitions, 7081 flow [2024-06-27 18:43:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 145 transitions. [2024-06-27 18:43:19,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-06-27 18:43:19,463 INFO L175 Difference]: Start difference. First operand has 331 places, 375 transitions, 6182 flow. Second operand 10 states and 145 transitions. [2024-06-27 18:43:19,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 393 transitions, 7081 flow [2024-06-27 18:43:20,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 393 transitions, 6836 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:20,164 INFO L231 Difference]: Finished difference. Result has 334 places, 377 transitions, 6071 flow [2024-06-27 18:43:20,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5937, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6071, PETRI_PLACES=334, PETRI_TRANSITIONS=377} [2024-06-27 18:43:20,165 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 18:43:20,165 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 377 transitions, 6071 flow [2024-06-27 18:43:20,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:20,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:20,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:20,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:43:20,166 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:20,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:20,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1618498958, now seen corresponding path program 13 times [2024-06-27 18:43:20,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:20,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853634851] [2024-06-27 18:43:20,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:20,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:20,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:20,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853634851] [2024-06-27 18:43:20,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853634851] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:20,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:20,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:20,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368421975] [2024-06-27 18:43:20,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:20,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:20,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:20,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:20,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:20,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 377 transitions, 6071 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:20,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:20,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:20,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:21,692 INFO L124 PetriNetUnfolderBase]: 1824/3148 cut-off events. [2024-06-27 18:43:21,692 INFO L125 PetriNetUnfolderBase]: For 151653/151653 co-relation queries the response was YES. [2024-06-27 18:43:21,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24342 conditions, 3148 events. 1824/3148 cut-off events. For 151653/151653 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 18732 event pairs, 448 based on Foata normal form. 4/2993 useless extension candidates. Maximal degree in co-relation 24184. Up to 1940 conditions per place. [2024-06-27 18:43:21,729 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 271 selfloop transitions, 132 changer transitions 0/410 dead transitions. [2024-06-27 18:43:21,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 410 transitions, 7672 flow [2024-06-27 18:43:21,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:21,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:21,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:43:21,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:43:21,730 INFO L175 Difference]: Start difference. First operand has 334 places, 377 transitions, 6071 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:43:21,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 410 transitions, 7672 flow [2024-06-27 18:43:22,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 410 transitions, 7563 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:22,465 INFO L231 Difference]: Finished difference. Result has 336 places, 383 transitions, 6388 flow [2024-06-27 18:43:22,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5962, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6388, PETRI_PLACES=336, PETRI_TRANSITIONS=383} [2024-06-27 18:43:22,465 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-27 18:43:22,465 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 383 transitions, 6388 flow [2024-06-27 18:43:22,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:22,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:22,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:22,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:43:22,466 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:22,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1618490588, now seen corresponding path program 14 times [2024-06-27 18:43:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:22,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132599977] [2024-06-27 18:43:22,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:22,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:23,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132599977] [2024-06-27 18:43:23,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132599977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:23,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:23,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:23,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129593078] [2024-06-27 18:43:23,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:23,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:23,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:23,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:23,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:23,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 383 transitions, 6388 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:23,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:23,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:23,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:24,130 INFO L124 PetriNetUnfolderBase]: 1835/3164 cut-off events. [2024-06-27 18:43:24,130 INFO L125 PetriNetUnfolderBase]: For 150919/150920 co-relation queries the response was YES. [2024-06-27 18:43:24,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24977 conditions, 3164 events. 1835/3164 cut-off events. For 150919/150920 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 18834 event pairs, 448 based on Foata normal form. 2/3006 useless extension candidates. Maximal degree in co-relation 24818. Up to 1944 conditions per place. [2024-06-27 18:43:24,167 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 270 selfloop transitions, 136 changer transitions 0/413 dead transitions. [2024-06-27 18:43:24,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 413 transitions, 7920 flow [2024-06-27 18:43:24,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:43:24,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:43:24,168 INFO L175 Difference]: Start difference. First operand has 336 places, 383 transitions, 6388 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:43:24,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 413 transitions, 7920 flow [2024-06-27 18:43:24,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 413 transitions, 7628 flow, removed 30 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:24,971 INFO L231 Difference]: Finished difference. Result has 341 places, 385 transitions, 6438 flow [2024-06-27 18:43:24,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6101, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6438, PETRI_PLACES=341, PETRI_TRANSITIONS=385} [2024-06-27 18:43:24,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 300 predicate places. [2024-06-27 18:43:24,972 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 385 transitions, 6438 flow [2024-06-27 18:43:24,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:24,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:24,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:24,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:43:24,973 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:24,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1618259948, now seen corresponding path program 15 times [2024-06-27 18:43:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:24,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508668877] [2024-06-27 18:43:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:24,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:24,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:25,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:25,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:25,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508668877] [2024-06-27 18:43:25,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508668877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:25,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:25,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:25,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924459877] [2024-06-27 18:43:25,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:25,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:25,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:25,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:25,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:25,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:25,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 385 transitions, 6438 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:25,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:25,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:25,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:26,594 INFO L124 PetriNetUnfolderBase]: 1831/3158 cut-off events. [2024-06-27 18:43:26,594 INFO L125 PetriNetUnfolderBase]: For 147728/147729 co-relation queries the response was YES. [2024-06-27 18:43:26,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24668 conditions, 3158 events. 1831/3158 cut-off events. For 147728/147729 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 18802 event pairs, 451 based on Foata normal form. 2/3000 useless extension candidates. Maximal degree in co-relation 24508. Up to 1943 conditions per place. [2024-06-27 18:43:26,629 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 270 selfloop transitions, 136 changer transitions 0/413 dead transitions. [2024-06-27 18:43:26,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 413 transitions, 7915 flow [2024-06-27 18:43:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:26,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:43:26,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:43:26,631 INFO L175 Difference]: Start difference. First operand has 341 places, 385 transitions, 6438 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:43:26,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 413 transitions, 7915 flow [2024-06-27 18:43:27,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 413 transitions, 7617 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:27,464 INFO L231 Difference]: Finished difference. Result has 344 places, 386 transitions, 6445 flow [2024-06-27 18:43:27,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6140, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6445, PETRI_PLACES=344, PETRI_TRANSITIONS=386} [2024-06-27 18:43:27,465 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-27 18:43:27,465 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 386 transitions, 6445 flow [2024-06-27 18:43:27,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:27,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:27,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:27,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:43:27,468 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:27,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:27,469 INFO L85 PathProgramCache]: Analyzing trace with hash 647161490, now seen corresponding path program 16 times [2024-06-27 18:43:27,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:27,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512624403] [2024-06-27 18:43:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:27,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512624403] [2024-06-27 18:43:28,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512624403] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:28,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:28,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:28,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47576309] [2024-06-27 18:43:28,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:28,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:28,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:28,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:28,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:28,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:28,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 386 transitions, 6445 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:28,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:28,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:28,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:29,052 INFO L124 PetriNetUnfolderBase]: 1882/3244 cut-off events. [2024-06-27 18:43:29,052 INFO L125 PetriNetUnfolderBase]: For 167591/167591 co-relation queries the response was YES. [2024-06-27 18:43:29,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25650 conditions, 3244 events. 1882/3244 cut-off events. For 167591/167591 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 19445 event pairs, 663 based on Foata normal form. 4/3081 useless extension candidates. Maximal degree in co-relation 25489. Up to 3029 conditions per place. [2024-06-27 18:43:29,088 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 383 selfloop transitions, 21 changer transitions 0/411 dead transitions. [2024-06-27 18:43:29,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 411 transitions, 7681 flow [2024-06-27 18:43:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 18:43:29,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-27 18:43:29,090 INFO L175 Difference]: Start difference. First operand has 344 places, 386 transitions, 6445 flow. Second operand 10 states and 144 transitions. [2024-06-27 18:43:29,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 411 transitions, 7681 flow [2024-06-27 18:43:29,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 411 transitions, 7373 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:29,923 INFO L231 Difference]: Finished difference. Result has 347 places, 392 transitions, 6369 flow [2024-06-27 18:43:29,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6145, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6369, PETRI_PLACES=347, PETRI_TRANSITIONS=392} [2024-06-27 18:43:29,924 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 306 predicate places. [2024-06-27 18:43:29,924 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 392 transitions, 6369 flow [2024-06-27 18:43:29,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:29,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:29,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:29,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:43:29,924 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:29,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:29,925 INFO L85 PathProgramCache]: Analyzing trace with hash 988412356, now seen corresponding path program 4 times [2024-06-27 18:43:29,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:29,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360867942] [2024-06-27 18:43:29,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:29,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:30,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:30,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:30,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360867942] [2024-06-27 18:43:30,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360867942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:30,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:30,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:30,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790362954] [2024-06-27 18:43:30,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:30,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:30,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:30,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:30,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:30,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:30,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 392 transitions, 6369 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:30,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:30,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:30,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:31,794 INFO L124 PetriNetUnfolderBase]: 1888/3253 cut-off events. [2024-06-27 18:43:31,794 INFO L125 PetriNetUnfolderBase]: For 157629/157629 co-relation queries the response was YES. [2024-06-27 18:43:31,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25329 conditions, 3253 events. 1888/3253 cut-off events. For 157629/157629 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 19482 event pairs, 670 based on Foata normal form. 1/3086 useless extension candidates. Maximal degree in co-relation 25166. Up to 3085 conditions per place. [2024-06-27 18:43:31,831 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 386 selfloop transitions, 17 changer transitions 0/410 dead transitions. [2024-06-27 18:43:31,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 410 transitions, 7314 flow [2024-06-27 18:43:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 18:43:31,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37027027027027026 [2024-06-27 18:43:31,832 INFO L175 Difference]: Start difference. First operand has 347 places, 392 transitions, 6369 flow. Second operand 10 states and 137 transitions. [2024-06-27 18:43:31,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 410 transitions, 7314 flow [2024-06-27 18:43:32,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 410 transitions, 7209 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:32,886 INFO L231 Difference]: Finished difference. Result has 350 places, 394 transitions, 6356 flow [2024-06-27 18:43:32,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6273, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6356, PETRI_PLACES=350, PETRI_TRANSITIONS=394} [2024-06-27 18:43:32,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 309 predicate places. [2024-06-27 18:43:32,886 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 394 transitions, 6356 flow [2024-06-27 18:43:32,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:32,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:32,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:32,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:43:32,887 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:32,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:32,887 INFO L85 PathProgramCache]: Analyzing trace with hash 979834222, now seen corresponding path program 20 times [2024-06-27 18:43:32,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:32,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196344302] [2024-06-27 18:43:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:32,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:33,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:33,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:33,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196344302] [2024-06-27 18:43:33,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196344302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:33,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:33,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:33,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816327759] [2024-06-27 18:43:33,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:33,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:33,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:33,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:33,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:33,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:33,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 394 transitions, 6356 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:33,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:33,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:33,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:34,688 INFO L124 PetriNetUnfolderBase]: 1885/3239 cut-off events. [2024-06-27 18:43:34,688 INFO L125 PetriNetUnfolderBase]: For 156182/156182 co-relation queries the response was YES. [2024-06-27 18:43:34,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24895 conditions, 3239 events. 1885/3239 cut-off events. For 156182/156182 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 19301 event pairs, 388 based on Foata normal form. 2/3074 useless extension candidates. Maximal degree in co-relation 24731. Up to 2753 conditions per place. [2024-06-27 18:43:34,722 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 301 selfloop transitions, 106 changer transitions 0/414 dead transitions. [2024-06-27 18:43:34,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 414 transitions, 7284 flow [2024-06-27 18:43:34,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:34,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:34,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 18:43:34,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-27 18:43:34,723 INFO L175 Difference]: Start difference. First operand has 350 places, 394 transitions, 6356 flow. Second operand 9 states and 138 transitions. [2024-06-27 18:43:34,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 414 transitions, 7284 flow [2024-06-27 18:43:35,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 414 transitions, 7171 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:35,660 INFO L231 Difference]: Finished difference. Result has 351 places, 394 transitions, 6460 flow [2024-06-27 18:43:35,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6460, PETRI_PLACES=351, PETRI_TRANSITIONS=394} [2024-06-27 18:43:35,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 310 predicate places. [2024-06-27 18:43:35,661 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 394 transitions, 6460 flow [2024-06-27 18:43:35,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:35,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:35,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:35,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:43:35,661 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:35,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:35,662 INFO L85 PathProgramCache]: Analyzing trace with hash 638590610, now seen corresponding path program 17 times [2024-06-27 18:43:35,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879258922] [2024-06-27 18:43:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:35,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:36,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879258922] [2024-06-27 18:43:36,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879258922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:36,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:36,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:36,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597617141] [2024-06-27 18:43:36,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:36,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:36,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:36,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:36,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:36,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:36,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 394 transitions, 6460 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:36,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:36,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:36,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:37,180 INFO L124 PetriNetUnfolderBase]: 1896/3257 cut-off events. [2024-06-27 18:43:37,181 INFO L125 PetriNetUnfolderBase]: For 159613/159613 co-relation queries the response was YES. [2024-06-27 18:43:37,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25254 conditions, 3257 events. 1896/3257 cut-off events. For 159613/159613 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 19419 event pairs, 401 based on Foata normal form. 2/3089 useless extension candidates. Maximal degree in co-relation 25089. Up to 1985 conditions per place. [2024-06-27 18:43:37,218 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 256 selfloop transitions, 159 changer transitions 0/422 dead transitions. [2024-06-27 18:43:37,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 422 transitions, 8016 flow [2024-06-27 18:43:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:37,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:43:37,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:43:37,220 INFO L175 Difference]: Start difference. First operand has 351 places, 394 transitions, 6460 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:43:37,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 422 transitions, 8016 flow [2024-06-27 18:43:38,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 422 transitions, 7785 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:38,133 INFO L231 Difference]: Finished difference. Result has 353 places, 396 transitions, 6622 flow [2024-06-27 18:43:38,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6229, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6622, PETRI_PLACES=353, PETRI_TRANSITIONS=396} [2024-06-27 18:43:38,133 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 312 predicate places. [2024-06-27 18:43:38,133 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 396 transitions, 6622 flow [2024-06-27 18:43:38,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:38,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:38,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:38,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:43:38,134 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:38,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:38,134 INFO L85 PathProgramCache]: Analyzing trace with hash 980071806, now seen corresponding path program 18 times [2024-06-27 18:43:38,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099568424] [2024-06-27 18:43:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:38,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:38,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:38,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:38,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099568424] [2024-06-27 18:43:38,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099568424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:38,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:38,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:38,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713997861] [2024-06-27 18:43:38,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:38,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:38,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:38,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:38,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 396 transitions, 6622 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:38,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:38,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:38,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:39,799 INFO L124 PetriNetUnfolderBase]: 1964/3358 cut-off events. [2024-06-27 18:43:39,799 INFO L125 PetriNetUnfolderBase]: For 192207/192208 co-relation queries the response was YES. [2024-06-27 18:43:39,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27232 conditions, 3358 events. 1964/3358 cut-off events. For 192207/192208 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20007 event pairs, 406 based on Foata normal form. 2/3181 useless extension candidates. Maximal degree in co-relation 27066. Up to 2029 conditions per place. [2024-06-27 18:43:39,838 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 263 selfloop transitions, 162 changer transitions 0/432 dead transitions. [2024-06-27 18:43:39,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 432 transitions, 8565 flow [2024-06-27 18:43:39,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:39,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:39,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:43:39,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:43:39,840 INFO L175 Difference]: Start difference. First operand has 353 places, 396 transitions, 6622 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:43:39,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 432 transitions, 8565 flow [2024-06-27 18:43:40,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 432 transitions, 8150 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:40,915 INFO L231 Difference]: Finished difference. Result has 357 places, 404 transitions, 6805 flow [2024-06-27 18:43:40,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6805, PETRI_PLACES=357, PETRI_TRANSITIONS=404} [2024-06-27 18:43:40,915 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 316 predicate places. [2024-06-27 18:43:40,916 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 404 transitions, 6805 flow [2024-06-27 18:43:40,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:40,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:40,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:40,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:43:40,916 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:40,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:40,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1278281652, now seen corresponding path program 5 times [2024-06-27 18:43:40,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:40,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098256789] [2024-06-27 18:43:40,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:40,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:41,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098256789] [2024-06-27 18:43:41,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098256789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:41,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:41,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:41,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24069914] [2024-06-27 18:43:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:41,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:41,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:41,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:41,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:41,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:41,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 404 transitions, 6805 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:41,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:41,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:41,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:42,751 INFO L124 PetriNetUnfolderBase]: 1960/3360 cut-off events. [2024-06-27 18:43:42,752 INFO L125 PetriNetUnfolderBase]: For 186606/186606 co-relation queries the response was YES. [2024-06-27 18:43:42,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27051 conditions, 3360 events. 1960/3360 cut-off events. For 186606/186606 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 20136 event pairs, 677 based on Foata normal form. 1/3183 useless extension candidates. Maximal degree in co-relation 26883. Up to 3156 conditions per place. [2024-06-27 18:43:42,786 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 396 selfloop transitions, 24 changer transitions 0/427 dead transitions. [2024-06-27 18:43:42,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 427 transitions, 7960 flow [2024-06-27 18:43:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:42,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 155 transitions. [2024-06-27 18:43:42,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3808353808353808 [2024-06-27 18:43:42,787 INFO L175 Difference]: Start difference. First operand has 357 places, 404 transitions, 6805 flow. Second operand 11 states and 155 transitions. [2024-06-27 18:43:42,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 427 transitions, 7960 flow [2024-06-27 18:43:43,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 427 transitions, 7605 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:43,767 INFO L231 Difference]: Finished difference. Result has 363 places, 406 transitions, 6538 flow [2024-06-27 18:43:43,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6452, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6538, PETRI_PLACES=363, PETRI_TRANSITIONS=406} [2024-06-27 18:43:43,768 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-27 18:43:43,768 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 406 transitions, 6538 flow [2024-06-27 18:43:43,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:43,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:43,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:43,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:43:43,769 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:43,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash 980080486, now seen corresponding path program 6 times [2024-06-27 18:43:43,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:43,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111671638] [2024-06-27 18:43:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:43,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:44,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:44,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:44,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111671638] [2024-06-27 18:43:44,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111671638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:44,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:44,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:44,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802842689] [2024-06-27 18:43:44,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:44,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:44,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:44,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:44,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:44,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 406 transitions, 6538 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:44,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:44,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:44,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:45,690 INFO L124 PetriNetUnfolderBase]: 1958/3353 cut-off events. [2024-06-27 18:43:45,690 INFO L125 PetriNetUnfolderBase]: For 181944/181944 co-relation queries the response was YES. [2024-06-27 18:43:45,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26281 conditions, 3353 events. 1958/3353 cut-off events. For 181944/181944 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 20052 event pairs, 559 based on Foata normal form. 1/3173 useless extension candidates. Maximal degree in co-relation 26111. Up to 3089 conditions per place. [2024-06-27 18:43:45,730 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 370 selfloop transitions, 46 changer transitions 0/423 dead transitions. [2024-06-27 18:43:45,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 423 transitions, 7474 flow [2024-06-27 18:43:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:45,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 144 transitions. [2024-06-27 18:43:45,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3891891891891892 [2024-06-27 18:43:45,731 INFO L175 Difference]: Start difference. First operand has 363 places, 406 transitions, 6538 flow. Second operand 10 states and 144 transitions. [2024-06-27 18:43:45,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 423 transitions, 7474 flow [2024-06-27 18:43:46,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 423 transitions, 7418 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:46,879 INFO L231 Difference]: Finished difference. Result has 366 places, 407 transitions, 6595 flow [2024-06-27 18:43:46,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6482, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6595, PETRI_PLACES=366, PETRI_TRANSITIONS=407} [2024-06-27 18:43:46,879 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 325 predicate places. [2024-06-27 18:43:46,879 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 407 transitions, 6595 flow [2024-06-27 18:43:46,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:46,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:46,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:46,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:43:46,880 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:46,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:46,881 INFO L85 PathProgramCache]: Analyzing trace with hash 638829620, now seen corresponding path program 19 times [2024-06-27 18:43:46,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:46,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569752921] [2024-06-27 18:43:46,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:46,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:46,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:47,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:47,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569752921] [2024-06-27 18:43:47,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569752921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:47,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:47,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:47,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216698556] [2024-06-27 18:43:47,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:47,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:47,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:47,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:47,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:47,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:47,617 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 407 transitions, 6595 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:47,617 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:47,617 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:47,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:48,412 INFO L124 PetriNetUnfolderBase]: 1950/3337 cut-off events. [2024-06-27 18:43:48,413 INFO L125 PetriNetUnfolderBase]: For 183367/183367 co-relation queries the response was YES. [2024-06-27 18:43:48,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25903 conditions, 3337 events. 1950/3337 cut-off events. For 183367/183367 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 19884 event pairs, 405 based on Foata normal form. 4/3162 useless extension candidates. Maximal degree in co-relation 25732. Up to 2020 conditions per place. [2024-06-27 18:43:48,449 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 265 selfloop transitions, 161 changer transitions 0/433 dead transitions. [2024-06-27 18:43:48,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 433 transitions, 8127 flow [2024-06-27 18:43:48,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:48,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:43:48,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 18:43:48,451 INFO L175 Difference]: Start difference. First operand has 366 places, 407 transitions, 6595 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:43:48,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 433 transitions, 8127 flow [2024-06-27 18:43:49,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 433 transitions, 7960 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:49,393 INFO L231 Difference]: Finished difference. Result has 368 places, 407 transitions, 6757 flow [2024-06-27 18:43:49,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6428, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6757, PETRI_PLACES=368, PETRI_TRANSITIONS=407} [2024-06-27 18:43:49,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 18:43:49,394 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 407 transitions, 6757 flow [2024-06-27 18:43:49,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:49,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:49,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:49,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:43:49,395 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:49,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:49,395 INFO L85 PathProgramCache]: Analyzing trace with hash 988124056, now seen corresponding path program 7 times [2024-06-27 18:43:49,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:49,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528023336] [2024-06-27 18:43:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:49,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:50,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528023336] [2024-06-27 18:43:50,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528023336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:50,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:50,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137154893] [2024-06-27 18:43:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:50,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:50,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:50,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:50,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:50,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 407 transitions, 6757 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:50,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:50,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:50,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:51,278 INFO L124 PetriNetUnfolderBase]: 1948/3338 cut-off events. [2024-06-27 18:43:51,279 INFO L125 PetriNetUnfolderBase]: For 172864/172864 co-relation queries the response was YES. [2024-06-27 18:43:51,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26150 conditions, 3338 events. 1948/3338 cut-off events. For 172864/172864 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 19899 event pairs, 554 based on Foata normal form. 1/3158 useless extension candidates. Maximal degree in co-relation 25978. Up to 3074 conditions per place. [2024-06-27 18:43:51,322 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 368 selfloop transitions, 49 changer transitions 0/424 dead transitions. [2024-06-27 18:43:51,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 424 transitions, 7698 flow [2024-06-27 18:43:51,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:51,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:51,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 143 transitions. [2024-06-27 18:43:51,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3864864864864865 [2024-06-27 18:43:51,323 INFO L175 Difference]: Start difference. First operand has 368 places, 407 transitions, 6757 flow. Second operand 10 states and 143 transitions. [2024-06-27 18:43:51,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 424 transitions, 7698 flow [2024-06-27 18:43:52,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 424 transitions, 7378 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:52,339 INFO L231 Difference]: Finished difference. Result has 370 places, 408 transitions, 6559 flow [2024-06-27 18:43:52,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6559, PETRI_PLACES=370, PETRI_TRANSITIONS=408} [2024-06-27 18:43:52,340 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 329 predicate places. [2024-06-27 18:43:52,340 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 408 transitions, 6559 flow [2024-06-27 18:43:52,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:52,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:52,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:52,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:43:52,341 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:52,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:52,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1265180046, now seen corresponding path program 20 times [2024-06-27 18:43:52,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:52,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135913015] [2024-06-27 18:43:52,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:52,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:53,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:53,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135913015] [2024-06-27 18:43:53,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135913015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:53,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:53,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:53,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819217338] [2024-06-27 18:43:53,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:53,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:53,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:53,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:53,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:53,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 408 transitions, 6559 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:53,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:53,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:53,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:53,948 INFO L124 PetriNetUnfolderBase]: 1955/3345 cut-off events. [2024-06-27 18:43:53,948 INFO L125 PetriNetUnfolderBase]: For 177866/177866 co-relation queries the response was YES. [2024-06-27 18:43:53,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25680 conditions, 3345 events. 1955/3345 cut-off events. For 177866/177866 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19912 event pairs, 381 based on Foata normal form. 4/3169 useless extension candidates. Maximal degree in co-relation 25507. Up to 2020 conditions per place. [2024-06-27 18:43:53,982 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 246 selfloop transitions, 183 changer transitions 0/436 dead transitions. [2024-06-27 18:43:53,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 436 transitions, 8182 flow [2024-06-27 18:43:53,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:53,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:43:53,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:43:53,983 INFO L175 Difference]: Start difference. First operand has 370 places, 408 transitions, 6559 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:43:53,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 436 transitions, 8182 flow [2024-06-27 18:43:54,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 436 transitions, 8045 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 18:43:54,966 INFO L231 Difference]: Finished difference. Result has 371 places, 410 transitions, 6870 flow [2024-06-27 18:43:54,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6870, PETRI_PLACES=371, PETRI_TRANSITIONS=410} [2024-06-27 18:43:54,966 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 18:43:54,967 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 410 transitions, 6870 flow [2024-06-27 18:43:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:54,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:54,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:54,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:43:54,967 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:54,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:54,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1265171676, now seen corresponding path program 21 times [2024-06-27 18:43:54,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:54,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518989783] [2024-06-27 18:43:54,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:54,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:55,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518989783] [2024-06-27 18:43:55,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518989783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:55,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:55,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:55,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442741145] [2024-06-27 18:43:55,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:55,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:55,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:55,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:55,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:55,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:55,766 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 410 transitions, 6870 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:55,766 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:55,766 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:55,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:56,608 INFO L124 PetriNetUnfolderBase]: 1951/3338 cut-off events. [2024-06-27 18:43:56,609 INFO L125 PetriNetUnfolderBase]: For 167272/167273 co-relation queries the response was YES. [2024-06-27 18:43:56,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26005 conditions, 3338 events. 1951/3338 cut-off events. For 167272/167273 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 19870 event pairs, 385 based on Foata normal form. 2/3160 useless extension candidates. Maximal degree in co-relation 25832. Up to 2019 conditions per place. [2024-06-27 18:43:56,649 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 237 selfloop transitions, 192 changer transitions 0/436 dead transitions. [2024-06-27 18:43:56,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 436 transitions, 8251 flow [2024-06-27 18:43:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:56,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 18:43:56,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 18:43:56,651 INFO L175 Difference]: Start difference. First operand has 371 places, 410 transitions, 6870 flow. Second operand 11 states and 173 transitions. [2024-06-27 18:43:56,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 436 transitions, 8251 flow [2024-06-27 18:43:57,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 436 transitions, 7767 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:57,753 INFO L231 Difference]: Finished difference. Result has 374 places, 410 transitions, 6775 flow [2024-06-27 18:43:57,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6386, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6775, PETRI_PLACES=374, PETRI_TRANSITIONS=410} [2024-06-27 18:43:57,753 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 333 predicate places. [2024-06-27 18:43:57,753 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 410 transitions, 6775 flow [2024-06-27 18:43:57,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:57,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:57,754 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:57,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:43:57,755 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:57,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:57,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1169338712, now seen corresponding path program 1 times [2024-06-27 18:43:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:57,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200460044] [2024-06-27 18:43:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:58,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:58,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200460044] [2024-06-27 18:43:58,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200460044] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:58,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:58,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:43:58,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030475547] [2024-06-27 18:43:58,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:58,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:43:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:58,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:43:58,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:43:58,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:58,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 410 transitions, 6775 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:58,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:58,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:59,437 INFO L124 PetriNetUnfolderBase]: 1967/3368 cut-off events. [2024-06-27 18:43:59,437 INFO L125 PetriNetUnfolderBase]: For 169543/169543 co-relation queries the response was YES. [2024-06-27 18:43:59,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25885 conditions, 3368 events. 1967/3368 cut-off events. For 169543/169543 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20168 event pairs, 490 based on Foata normal form. 2/3192 useless extension candidates. Maximal degree in co-relation 25712. Up to 2997 conditions per place. [2024-06-27 18:43:59,478 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 382 selfloop transitions, 57 changer transitions 0/446 dead transitions. [2024-06-27 18:43:59,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 446 transitions, 7895 flow [2024-06-27 18:43:59,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:59,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:43:59,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 18:43:59,482 INFO L175 Difference]: Start difference. First operand has 374 places, 410 transitions, 6775 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:43:59,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 446 transitions, 7895 flow [2024-06-27 18:44:00,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 446 transitions, 7476 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:00,502 INFO L231 Difference]: Finished difference. Result has 375 places, 412 transitions, 6553 flow [2024-06-27 18:44:00,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6356, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6553, PETRI_PLACES=375, PETRI_TRANSITIONS=412} [2024-06-27 18:44:00,503 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 334 predicate places. [2024-06-27 18:44:00,504 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 412 transitions, 6553 flow [2024-06-27 18:44:00,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:00,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:00,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:00,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:44:00,506 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:00,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1792143984, now seen corresponding path program 2 times [2024-06-27 18:44:00,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:00,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217909642] [2024-06-27 18:44:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:00,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:01,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217909642] [2024-06-27 18:44:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217909642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:01,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:01,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:01,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041629747] [2024-06-27 18:44:01,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:01,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:01,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:01,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:01,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:01,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:01,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 412 transitions, 6553 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:01,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:01,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:01,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:02,233 INFO L124 PetriNetUnfolderBase]: 1991/3411 cut-off events. [2024-06-27 18:44:02,233 INFO L125 PetriNetUnfolderBase]: For 172230/172230 co-relation queries the response was YES. [2024-06-27 18:44:02,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25706 conditions, 3411 events. 1991/3411 cut-off events. For 172230/172230 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 20476 event pairs, 361 based on Foata normal form. 2/3234 useless extension candidates. Maximal degree in co-relation 25532. Up to 2982 conditions per place. [2024-06-27 18:44:02,270 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 381 selfloop transitions, 63 changer transitions 0/451 dead transitions. [2024-06-27 18:44:02,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 451 transitions, 7773 flow [2024-06-27 18:44:02,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:02,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:02,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:44:02,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 18:44:02,272 INFO L175 Difference]: Start difference. First operand has 375 places, 412 transitions, 6553 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:44:02,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 451 transitions, 7773 flow [2024-06-27 18:44:03,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 451 transitions, 7526 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:03,354 INFO L231 Difference]: Finished difference. Result has 377 places, 416 transitions, 6603 flow [2024-06-27 18:44:03,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6376, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6603, PETRI_PLACES=377, PETRI_TRANSITIONS=416} [2024-06-27 18:44:03,355 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 18:44:03,355 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 416 transitions, 6603 flow [2024-06-27 18:44:03,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:03,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:03,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:03,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:44:03,356 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:03,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash -130518824, now seen corresponding path program 3 times [2024-06-27 18:44:03,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:03,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171466023] [2024-06-27 18:44:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:03,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:04,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:04,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171466023] [2024-06-27 18:44:04,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171466023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:04,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:04,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:04,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716696826] [2024-06-27 18:44:04,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:04,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:04,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:04,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:04,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:04,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:04,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 416 transitions, 6603 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:04,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:04,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:04,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:05,212 INFO L124 PetriNetUnfolderBase]: 2007/3442 cut-off events. [2024-06-27 18:44:05,213 INFO L125 PetriNetUnfolderBase]: For 175532/175532 co-relation queries the response was YES. [2024-06-27 18:44:05,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25889 conditions, 3442 events. 2007/3442 cut-off events. For 175532/175532 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 20728 event pairs, 529 based on Foata normal form. 2/3266 useless extension candidates. Maximal degree in co-relation 25714. Up to 3138 conditions per place. [2024-06-27 18:44:05,255 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 364 selfloop transitions, 75 changer transitions 0/446 dead transitions. [2024-06-27 18:44:05,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 446 transitions, 7705 flow [2024-06-27 18:44:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:05,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:05,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-27 18:44:05,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40294840294840295 [2024-06-27 18:44:05,256 INFO L175 Difference]: Start difference. First operand has 377 places, 416 transitions, 6603 flow. Second operand 11 states and 164 transitions. [2024-06-27 18:44:05,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 446 transitions, 7705 flow [2024-06-27 18:44:06,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 446 transitions, 7518 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:06,429 INFO L231 Difference]: Finished difference. Result has 379 places, 418 transitions, 6660 flow [2024-06-27 18:44:06,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6416, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6660, PETRI_PLACES=379, PETRI_TRANSITIONS=418} [2024-06-27 18:44:06,429 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-27 18:44:06,429 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 418 transitions, 6660 flow [2024-06-27 18:44:06,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:06,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:06,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:06,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:44:06,430 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:06,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:06,431 INFO L85 PathProgramCache]: Analyzing trace with hash -120329527, now seen corresponding path program 1 times [2024-06-27 18:44:06,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:06,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128963600] [2024-06-27 18:44:06,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:06,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:07,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:07,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128963600] [2024-06-27 18:44:07,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128963600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:07,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:07,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:07,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952219435] [2024-06-27 18:44:07,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:07,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:07,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:07,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:07,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:07,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:07,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 418 transitions, 6660 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:07,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:07,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:07,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:08,145 INFO L124 PetriNetUnfolderBase]: 2013/3451 cut-off events. [2024-06-27 18:44:08,146 INFO L125 PetriNetUnfolderBase]: For 175323/175323 co-relation queries the response was YES. [2024-06-27 18:44:08,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25975 conditions, 3451 events. 2013/3451 cut-off events. For 175323/175323 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 20822 event pairs, 525 based on Foata normal form. 1/3274 useless extension candidates. Maximal degree in co-relation 25799. Up to 3152 conditions per place. [2024-06-27 18:44:08,188 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 360 selfloop transitions, 79 changer transitions 0/446 dead transitions. [2024-06-27 18:44:08,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 446 transitions, 7736 flow [2024-06-27 18:44:08,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:08,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:08,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-27 18:44:08,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39803439803439805 [2024-06-27 18:44:08,189 INFO L175 Difference]: Start difference. First operand has 379 places, 418 transitions, 6660 flow. Second operand 11 states and 162 transitions. [2024-06-27 18:44:08,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 446 transitions, 7736 flow [2024-06-27 18:44:09,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 446 transitions, 7554 flow, removed 38 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:09,251 INFO L231 Difference]: Finished difference. Result has 383 places, 420 transitions, 6720 flow [2024-06-27 18:44:09,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6478, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6720, PETRI_PLACES=383, PETRI_TRANSITIONS=420} [2024-06-27 18:44:09,264 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 18:44:09,264 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 420 transitions, 6720 flow [2024-06-27 18:44:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:09,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:09,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:09,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:44:09,272 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:09,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:09,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1416423868, now seen corresponding path program 4 times [2024-06-27 18:44:09,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:09,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582218562] [2024-06-27 18:44:09,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:09,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:10,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:10,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:10,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582218562] [2024-06-27 18:44:10,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582218562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:10,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:10,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:10,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821334674] [2024-06-27 18:44:10,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:10,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:10,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:10,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:10,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:10,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:10,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 420 transitions, 6720 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:10,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:10,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:10,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:11,117 INFO L124 PetriNetUnfolderBase]: 2029/3478 cut-off events. [2024-06-27 18:44:11,117 INFO L125 PetriNetUnfolderBase]: For 182496/182496 co-relation queries the response was YES. [2024-06-27 18:44:11,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26199 conditions, 3478 events. 2029/3478 cut-off events. For 182496/182496 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 21023 event pairs, 524 based on Foata normal form. 2/3302 useless extension candidates. Maximal degree in co-relation 26022. Up to 3103 conditions per place. [2024-06-27 18:44:11,158 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 370 selfloop transitions, 75 changer transitions 0/452 dead transitions. [2024-06-27 18:44:11,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 452 transitions, 7850 flow [2024-06-27 18:44:11,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 18:44:11,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 18:44:11,159 INFO L175 Difference]: Start difference. First operand has 383 places, 420 transitions, 6720 flow. Second operand 11 states and 168 transitions. [2024-06-27 18:44:11,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 452 transitions, 7850 flow [2024-06-27 18:44:12,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 452 transitions, 7648 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:12,315 INFO L231 Difference]: Finished difference. Result has 384 places, 422 transitions, 6762 flow [2024-06-27 18:44:12,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6518, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6762, PETRI_PLACES=384, PETRI_TRANSITIONS=422} [2024-06-27 18:44:12,316 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-27 18:44:12,316 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 422 transitions, 6762 flow [2024-06-27 18:44:12,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:12,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:12,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:12,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:44:12,317 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:12,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:12,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1411638088, now seen corresponding path program 5 times [2024-06-27 18:44:12,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:12,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709761110] [2024-06-27 18:44:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:12,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:13,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:13,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:13,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709761110] [2024-06-27 18:44:13,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709761110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:13,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:13,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:13,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638645167] [2024-06-27 18:44:13,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:13,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:13,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:13,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:13,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:13,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:13,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 422 transitions, 6762 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:13,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:13,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:13,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:14,194 INFO L124 PetriNetUnfolderBase]: 2045/3505 cut-off events. [2024-06-27 18:44:14,195 INFO L125 PetriNetUnfolderBase]: For 188053/188053 co-relation queries the response was YES. [2024-06-27 18:44:14,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26484 conditions, 3505 events. 2045/3505 cut-off events. For 188053/188053 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 21202 event pairs, 516 based on Foata normal form. 2/3327 useless extension candidates. Maximal degree in co-relation 26306. Up to 3017 conditions per place. [2024-06-27 18:44:14,233 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 372 selfloop transitions, 77 changer transitions 0/456 dead transitions. [2024-06-27 18:44:14,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 456 transitions, 7916 flow [2024-06-27 18:44:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:44:14,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 18:44:14,234 INFO L175 Difference]: Start difference. First operand has 384 places, 422 transitions, 6762 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:44:14,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 456 transitions, 7916 flow [2024-06-27 18:44:15,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 456 transitions, 7690 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:15,407 INFO L231 Difference]: Finished difference. Result has 386 places, 424 transitions, 6788 flow [2024-06-27 18:44:15,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6536, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6788, PETRI_PLACES=386, PETRI_TRANSITIONS=424} [2024-06-27 18:44:15,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 345 predicate places. [2024-06-27 18:44:15,407 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 424 transitions, 6788 flow [2024-06-27 18:44:15,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:15,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:15,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:15,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:44:15,408 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:15,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:15,408 INFO L85 PathProgramCache]: Analyzing trace with hash 360240400, now seen corresponding path program 1 times [2024-06-27 18:44:15,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:15,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856649602] [2024-06-27 18:44:15,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:15,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:16,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:16,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856649602] [2024-06-27 18:44:16,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856649602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:16,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:16,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906756833] [2024-06-27 18:44:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:16,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:16,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:16,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 424 transitions, 6788 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:16,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:16,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:16,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:17,051 INFO L124 PetriNetUnfolderBase]: 2042/3497 cut-off events. [2024-06-27 18:44:17,051 INFO L125 PetriNetUnfolderBase]: For 181063/181063 co-relation queries the response was YES. [2024-06-27 18:44:17,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26234 conditions, 3497 events. 2042/3497 cut-off events. For 181063/181063 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 21076 event pairs, 472 based on Foata normal form. 2/3318 useless extension candidates. Maximal degree in co-relation 26055. Up to 2924 conditions per place. [2024-06-27 18:44:17,093 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 315 selfloop transitions, 131 changer transitions 0/453 dead transitions. [2024-06-27 18:44:17,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 453 transitions, 8089 flow [2024-06-27 18:44:17,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 18:44:17,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 18:44:17,094 INFO L175 Difference]: Start difference. First operand has 386 places, 424 transitions, 6788 flow. Second operand 11 states and 168 transitions. [2024-06-27 18:44:17,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 453 transitions, 8089 flow [2024-06-27 18:44:18,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 453 transitions, 7855 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:18,373 INFO L231 Difference]: Finished difference. Result has 389 places, 427 transitions, 6950 flow [2024-06-27 18:44:18,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6554, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6950, PETRI_PLACES=389, PETRI_TRANSITIONS=427} [2024-06-27 18:44:18,374 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 348 predicate places. [2024-06-27 18:44:18,374 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 427 transitions, 6950 flow [2024-06-27 18:44:18,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:18,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:18,374 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:18,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:44:18,374 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:18,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:18,375 INFO L85 PathProgramCache]: Analyzing trace with hash -725189668, now seen corresponding path program 6 times [2024-06-27 18:44:18,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:18,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315916080] [2024-06-27 18:44:18,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:18,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:19,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315916080] [2024-06-27 18:44:19,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315916080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:19,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:19,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622167205] [2024-06-27 18:44:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:19,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:19,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:19,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 427 transitions, 6950 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:19,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:19,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:19,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:20,294 INFO L124 PetriNetUnfolderBase]: 2077/3557 cut-off events. [2024-06-27 18:44:20,295 INFO L125 PetriNetUnfolderBase]: For 184533/184533 co-relation queries the response was YES. [2024-06-27 18:44:20,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26799 conditions, 3557 events. 2077/3557 cut-off events. For 184533/184533 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 21557 event pairs, 467 based on Foata normal form. 2/3378 useless extension candidates. Maximal degree in co-relation 26618. Up to 3172 conditions per place. [2024-06-27 18:44:20,341 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 399 selfloop transitions, 59 changer transitions 0/465 dead transitions. [2024-06-27 18:44:20,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 465 transitions, 8140 flow [2024-06-27 18:44:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:44:20,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 18:44:20,343 INFO L175 Difference]: Start difference. First operand has 389 places, 427 transitions, 6950 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:44:20,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 465 transitions, 8140 flow [2024-06-27 18:44:21,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 465 transitions, 7893 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:21,643 INFO L231 Difference]: Finished difference. Result has 392 places, 433 transitions, 6960 flow [2024-06-27 18:44:21,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6703, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6960, PETRI_PLACES=392, PETRI_TRANSITIONS=433} [2024-06-27 18:44:21,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-27 18:44:21,644 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 433 transitions, 6960 flow [2024-06-27 18:44:21,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:21,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:21,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:21,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:44:21,645 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:21,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:21,645 INFO L85 PathProgramCache]: Analyzing trace with hash 673639394, now seen corresponding path program 7 times [2024-06-27 18:44:21,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:21,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485962597] [2024-06-27 18:44:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:21,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:21,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:22,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485962597] [2024-06-27 18:44:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485962597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:22,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:22,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:22,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138153073] [2024-06-27 18:44:22,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:22,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:22,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:22,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:22,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:22,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:22,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 433 transitions, 6960 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:22,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:22,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:22,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:23,509 INFO L124 PetriNetUnfolderBase]: 2142/3674 cut-off events. [2024-06-27 18:44:23,509 INFO L125 PetriNetUnfolderBase]: For 198646/198646 co-relation queries the response was YES. [2024-06-27 18:44:23,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27665 conditions, 3674 events. 2142/3674 cut-off events. For 198646/198646 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 22491 event pairs, 529 based on Foata normal form. 2/3498 useless extension candidates. Maximal degree in co-relation 27483. Up to 3176 conditions per place. [2024-06-27 18:44:23,553 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 388 selfloop transitions, 79 changer transitions 0/474 dead transitions. [2024-06-27 18:44:23,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 474 transitions, 8464 flow [2024-06-27 18:44:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:44:23,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:44:23,554 INFO L175 Difference]: Start difference. First operand has 392 places, 433 transitions, 6960 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:44:23,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 474 transitions, 8464 flow [2024-06-27 18:44:24,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 474 transitions, 8275 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:24,810 INFO L231 Difference]: Finished difference. Result has 395 places, 443 transitions, 7199 flow [2024-06-27 18:44:24,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6771, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7199, PETRI_PLACES=395, PETRI_TRANSITIONS=443} [2024-06-27 18:44:24,824 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 18:44:24,824 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 443 transitions, 7199 flow [2024-06-27 18:44:24,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:24,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:24,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:24,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:44:24,825 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:24,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash 673783544, now seen corresponding path program 8 times [2024-06-27 18:44:24,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:24,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269071138] [2024-06-27 18:44:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:24,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:25,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269071138] [2024-06-27 18:44:25,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269071138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:25,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:25,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:25,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963940461] [2024-06-27 18:44:25,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:25,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:25,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:25,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 443 transitions, 7199 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:25,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:25,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:25,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:26,808 INFO L124 PetriNetUnfolderBase]: 2158/3703 cut-off events. [2024-06-27 18:44:26,808 INFO L125 PetriNetUnfolderBase]: For 203874/203874 co-relation queries the response was YES. [2024-06-27 18:44:26,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28092 conditions, 3703 events. 2158/3703 cut-off events. For 203874/203874 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22738 event pairs, 539 based on Foata normal form. 2/3525 useless extension candidates. Maximal degree in co-relation 27908. Up to 3312 conditions per place. [2024-06-27 18:44:26,851 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 390 selfloop transitions, 77 changer transitions 0/474 dead transitions. [2024-06-27 18:44:26,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 474 transitions, 8579 flow [2024-06-27 18:44:26,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:26,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:44:26,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 18:44:26,853 INFO L175 Difference]: Start difference. First operand has 395 places, 443 transitions, 7199 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:44:26,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 474 transitions, 8579 flow [2024-06-27 18:44:28,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 474 transitions, 8397 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:28,056 INFO L231 Difference]: Finished difference. Result has 400 places, 445 transitions, 7281 flow [2024-06-27 18:44:28,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7031, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7281, PETRI_PLACES=400, PETRI_TRANSITIONS=445} [2024-06-27 18:44:28,056 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-27 18:44:28,056 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 445 transitions, 7281 flow [2024-06-27 18:44:28,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:28,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:28,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:28,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:44:28,057 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:28,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:28,057 INFO L85 PathProgramCache]: Analyzing trace with hash -255642357, now seen corresponding path program 2 times [2024-06-27 18:44:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:28,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601921065] [2024-06-27 18:44:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:28,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:28,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601921065] [2024-06-27 18:44:28,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601921065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:28,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:28,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:28,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742477332] [2024-06-27 18:44:28,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:28,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:28,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:29,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:29,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 445 transitions, 7281 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:29,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:29,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:29,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:30,124 INFO L124 PetriNetUnfolderBase]: 2157/3701 cut-off events. [2024-06-27 18:44:30,124 INFO L125 PetriNetUnfolderBase]: For 194275/194275 co-relation queries the response was YES. [2024-06-27 18:44:30,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27947 conditions, 3701 events. 2157/3701 cut-off events. For 194275/194275 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22688 event pairs, 557 based on Foata normal form. 1/3517 useless extension candidates. Maximal degree in co-relation 27761. Up to 3406 conditions per place. [2024-06-27 18:44:30,165 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 385 selfloop transitions, 79 changer transitions 0/471 dead transitions. [2024-06-27 18:44:30,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 471 transitions, 8367 flow [2024-06-27 18:44:30,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:30,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:30,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 18:44:30,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-27 18:44:30,166 INFO L175 Difference]: Start difference. First operand has 400 places, 445 transitions, 7281 flow. Second operand 11 states and 163 transitions. [2024-06-27 18:44:30,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 471 transitions, 8367 flow [2024-06-27 18:44:31,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 471 transitions, 8093 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:31,352 INFO L231 Difference]: Finished difference. Result has 401 places, 447 transitions, 7223 flow [2024-06-27 18:44:31,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7007, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7223, PETRI_PLACES=401, PETRI_TRANSITIONS=447} [2024-06-27 18:44:31,353 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 360 predicate places. [2024-06-27 18:44:31,353 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 447 transitions, 7223 flow [2024-06-27 18:44:31,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:31,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:31,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:31,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:44:31,355 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:31,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:31,355 INFO L85 PathProgramCache]: Analyzing trace with hash 673789124, now seen corresponding path program 9 times [2024-06-27 18:44:31,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:31,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120097555] [2024-06-27 18:44:31,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:31,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:32,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120097555] [2024-06-27 18:44:32,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120097555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:32,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:32,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:32,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905956918] [2024-06-27 18:44:32,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:32,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:32,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:32,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:32,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:32,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:32,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 447 transitions, 7223 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:32,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:32,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:32,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:33,360 INFO L124 PetriNetUnfolderBase]: 2154/3696 cut-off events. [2024-06-27 18:44:33,360 INFO L125 PetriNetUnfolderBase]: For 190302/190302 co-relation queries the response was YES. [2024-06-27 18:44:33,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27537 conditions, 3696 events. 2154/3696 cut-off events. For 190302/190302 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 22641 event pairs, 556 based on Foata normal form. 2/3515 useless extension candidates. Maximal degree in co-relation 27350. Up to 3388 conditions per place. [2024-06-27 18:44:33,404 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 391 selfloop transitions, 75 changer transitions 0/473 dead transitions. [2024-06-27 18:44:33,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 473 transitions, 8287 flow [2024-06-27 18:44:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:33,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 18:44:33,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 18:44:33,406 INFO L175 Difference]: Start difference. First operand has 401 places, 447 transitions, 7223 flow. Second operand 11 states and 165 transitions. [2024-06-27 18:44:33,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 473 transitions, 8287 flow [2024-06-27 18:44:34,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 473 transitions, 7882 flow, removed 40 selfloop flow, removed 13 redundant places. [2024-06-27 18:44:34,655 INFO L231 Difference]: Finished difference. Result has 399 places, 447 transitions, 6980 flow [2024-06-27 18:44:34,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6818, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6980, PETRI_PLACES=399, PETRI_TRANSITIONS=447} [2024-06-27 18:44:34,656 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-27 18:44:34,656 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 447 transitions, 6980 flow [2024-06-27 18:44:34,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:34,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:34,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:34,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:44:34,657 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:34,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:34,657 INFO L85 PathProgramCache]: Analyzing trace with hash -722185438, now seen corresponding path program 10 times [2024-06-27 18:44:34,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:34,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49502456] [2024-06-27 18:44:34,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:34,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:35,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:35,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:35,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49502456] [2024-06-27 18:44:35,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49502456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:35,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:35,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:35,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181588141] [2024-06-27 18:44:35,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:35,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:35,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:35,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:35,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:35,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:35,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 447 transitions, 6980 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:35,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:35,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:35,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:36,540 INFO L124 PetriNetUnfolderBase]: 2170/3725 cut-off events. [2024-06-27 18:44:36,541 INFO L125 PetriNetUnfolderBase]: For 192079/192079 co-relation queries the response was YES. [2024-06-27 18:44:36,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27524 conditions, 3725 events. 2170/3725 cut-off events. For 192079/192079 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 22893 event pairs, 533 based on Foata normal form. 2/3542 useless extension candidates. Maximal degree in co-relation 27336. Up to 3289 conditions per place. [2024-06-27 18:44:36,587 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 369 selfloop transitions, 100 changer transitions 0/476 dead transitions. [2024-06-27 18:44:36,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 476 transitions, 8162 flow [2024-06-27 18:44:36,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:36,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:36,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 18:44:36,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 18:44:36,589 INFO L175 Difference]: Start difference. First operand has 399 places, 447 transitions, 6980 flow. Second operand 11 states and 168 transitions. [2024-06-27 18:44:36,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 476 transitions, 8162 flow [2024-06-27 18:44:37,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 476 transitions, 7996 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:37,812 INFO L231 Difference]: Finished difference. Result has 400 places, 449 transitions, 7123 flow [2024-06-27 18:44:37,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6814, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7123, PETRI_PLACES=400, PETRI_TRANSITIONS=449} [2024-06-27 18:44:37,812 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 359 predicate places. [2024-06-27 18:44:37,813 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 449 transitions, 7123 flow [2024-06-27 18:44:37,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:37,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:37,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:37,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:44:37,813 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:37,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:37,814 INFO L85 PathProgramCache]: Analyzing trace with hash -714833788, now seen corresponding path program 11 times [2024-06-27 18:44:37,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:37,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577692733] [2024-06-27 18:44:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:37,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:38,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:38,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:38,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577692733] [2024-06-27 18:44:38,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577692733] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:38,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:38,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:38,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085552040] [2024-06-27 18:44:38,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:38,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:38,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:38,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:38,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:38,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:38,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 449 transitions, 7123 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:38,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:38,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:38,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:39,812 INFO L124 PetriNetUnfolderBase]: 2186/3753 cut-off events. [2024-06-27 18:44:39,813 INFO L125 PetriNetUnfolderBase]: For 198794/198794 co-relation queries the response was YES. [2024-06-27 18:44:39,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27984 conditions, 3753 events. 2186/3753 cut-off events. For 198794/198794 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 23093 event pairs, 541 based on Foata normal form. 2/3570 useless extension candidates. Maximal degree in co-relation 27795. Up to 3317 conditions per place. [2024-06-27 18:44:39,860 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 360 selfloop transitions, 111 changer transitions 0/478 dead transitions. [2024-06-27 18:44:39,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 478 transitions, 8313 flow [2024-06-27 18:44:39,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:39,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 18:44:39,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4103194103194103 [2024-06-27 18:44:39,861 INFO L175 Difference]: Start difference. First operand has 400 places, 449 transitions, 7123 flow. Second operand 11 states and 167 transitions. [2024-06-27 18:44:39,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 478 transitions, 8313 flow [2024-06-27 18:44:41,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 478 transitions, 8020 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:41,169 INFO L231 Difference]: Finished difference. Result has 402 places, 451 transitions, 7165 flow [2024-06-27 18:44:41,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6830, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7165, PETRI_PLACES=402, PETRI_TRANSITIONS=451} [2024-06-27 18:44:41,170 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-27 18:44:41,170 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 451 transitions, 7165 flow [2024-06-27 18:44:41,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:41,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:41,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:41,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:44:41,170 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:41,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash -722191018, now seen corresponding path program 12 times [2024-06-27 18:44:41,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:41,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749913161] [2024-06-27 18:44:41,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:41,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:41,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:41,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749913161] [2024-06-27 18:44:41,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749913161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:41,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:41,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:41,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686585259] [2024-06-27 18:44:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:41,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:41,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:41,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:42,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:42,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 451 transitions, 7165 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:42,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:42,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:42,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:43,069 INFO L124 PetriNetUnfolderBase]: 2202/3782 cut-off events. [2024-06-27 18:44:43,070 INFO L125 PetriNetUnfolderBase]: For 202739/202739 co-relation queries the response was YES. [2024-06-27 18:44:43,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28207 conditions, 3782 events. 2202/3782 cut-off events. For 202739/202739 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 23371 event pairs, 538 based on Foata normal form. 2/3600 useless extension candidates. Maximal degree in co-relation 28017. Up to 3283 conditions per place. [2024-06-27 18:44:43,118 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 370 selfloop transitions, 105 changer transitions 0/482 dead transitions. [2024-06-27 18:44:43,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 482 transitions, 8379 flow [2024-06-27 18:44:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:43,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:44:43,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 18:44:43,119 INFO L175 Difference]: Start difference. First operand has 402 places, 451 transitions, 7165 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:44:43,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 482 transitions, 8379 flow [2024-06-27 18:44:44,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 482 transitions, 8060 flow, removed 50 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:44,628 INFO L231 Difference]: Finished difference. Result has 404 places, 453 transitions, 7173 flow [2024-06-27 18:44:44,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6846, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7173, PETRI_PLACES=404, PETRI_TRANSITIONS=453} [2024-06-27 18:44:44,644 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 18:44:44,644 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 453 transitions, 7173 flow [2024-06-27 18:44:44,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:44,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:44,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:44,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:44:44,645 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:44,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:44,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1836535806, now seen corresponding path program 13 times [2024-06-27 18:44:44,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:44,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071850917] [2024-06-27 18:44:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:44,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:45,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:45,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071850917] [2024-06-27 18:44:45,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071850917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:45,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:45,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744571375] [2024-06-27 18:44:45,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:45,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:45,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 453 transitions, 7173 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:45,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:45,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:45,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:46,747 INFO L124 PetriNetUnfolderBase]: 2218/3810 cut-off events. [2024-06-27 18:44:46,747 INFO L125 PetriNetUnfolderBase]: For 207734/207734 co-relation queries the response was YES. [2024-06-27 18:44:46,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28398 conditions, 3810 events. 2218/3810 cut-off events. For 207734/207734 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 23522 event pairs, 574 based on Foata normal form. 2/3626 useless extension candidates. Maximal degree in co-relation 28207. Up to 3373 conditions per place. [2024-06-27 18:44:46,794 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 385 selfloop transitions, 90 changer transitions 0/482 dead transitions. [2024-06-27 18:44:46,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 482 transitions, 8379 flow [2024-06-27 18:44:46,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:46,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:46,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:44:46,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 18:44:46,796 INFO L175 Difference]: Start difference. First operand has 404 places, 453 transitions, 7173 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:44:46,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 482 transitions, 8379 flow [2024-06-27 18:44:48,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 482 transitions, 8068 flow, removed 52 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:48,088 INFO L231 Difference]: Finished difference. Result has 406 places, 455 transitions, 7163 flow [2024-06-27 18:44:48,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6862, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7163, PETRI_PLACES=406, PETRI_TRANSITIONS=455} [2024-06-27 18:44:48,089 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-27 18:44:48,089 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 455 transitions, 7163 flow [2024-06-27 18:44:48,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:48,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:48,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:44:48,089 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:48,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2043466293, now seen corresponding path program 1 times [2024-06-27 18:44:48,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:48,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476506276] [2024-06-27 18:44:48,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:48,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:49,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:49,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476506276] [2024-06-27 18:44:49,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476506276] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:49,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:49,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:49,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70640548] [2024-06-27 18:44:49,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:49,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:49,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:49,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 455 transitions, 7163 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:49,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:49,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:49,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:50,184 INFO L124 PetriNetUnfolderBase]: 2234/3843 cut-off events. [2024-06-27 18:44:50,184 INFO L125 PetriNetUnfolderBase]: For 212177/212177 co-relation queries the response was YES. [2024-06-27 18:44:50,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28529 conditions, 3843 events. 2234/3843 cut-off events. For 212177/212177 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23865 event pairs, 685 based on Foata normal form. 2/3657 useless extension candidates. Maximal degree in co-relation 28337. Up to 3645 conditions per place. [2024-06-27 18:44:50,229 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 449 selfloop transitions, 26 changer transitions 0/482 dead transitions. [2024-06-27 18:44:50,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 482 transitions, 8359 flow [2024-06-27 18:44:50,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:44:50,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:44:50,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 168 transitions. [2024-06-27 18:44:50,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783783783783784 [2024-06-27 18:44:50,231 INFO L175 Difference]: Start difference. First operand has 406 places, 455 transitions, 7163 flow. Second operand 12 states and 168 transitions. [2024-06-27 18:44:50,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 482 transitions, 8359 flow [2024-06-27 18:44:51,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 482 transitions, 8074 flow, removed 54 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:51,540 INFO L231 Difference]: Finished difference. Result has 409 places, 457 transitions, 7053 flow [2024-06-27 18:44:51,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6878, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7053, PETRI_PLACES=409, PETRI_TRANSITIONS=457} [2024-06-27 18:44:51,541 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-27 18:44:51,541 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 457 transitions, 7053 flow [2024-06-27 18:44:51,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:51,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:51,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:51,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:44:51,542 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:51,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:51,542 INFO L85 PathProgramCache]: Analyzing trace with hash -921492808, now seen corresponding path program 14 times [2024-06-27 18:44:51,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:51,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053873408] [2024-06-27 18:44:51,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:51,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:52,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:52,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:52,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053873408] [2024-06-27 18:44:52,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053873408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:52,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:52,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:52,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776991556] [2024-06-27 18:44:52,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:52,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:52,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:52,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:52,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:52,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:52,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 457 transitions, 7053 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:52,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:52,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:52,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:53,656 INFO L124 PetriNetUnfolderBase]: 2250/3868 cut-off events. [2024-06-27 18:44:53,657 INFO L125 PetriNetUnfolderBase]: For 215180/215180 co-relation queries the response was YES. [2024-06-27 18:44:53,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28512 conditions, 3868 events. 2250/3868 cut-off events. For 215180/215180 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 24039 event pairs, 576 based on Foata normal form. 2/3685 useless extension candidates. Maximal degree in co-relation 28319. Up to 3385 conditions per place. [2024-06-27 18:44:53,699 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 388 selfloop transitions, 93 changer transitions 0/488 dead transitions. [2024-06-27 18:44:53,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 488 transitions, 8289 flow [2024-06-27 18:44:53,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2024-06-27 18:44:53,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250614250614251 [2024-06-27 18:44:53,701 INFO L175 Difference]: Start difference. First operand has 409 places, 457 transitions, 7053 flow. Second operand 11 states and 173 transitions. [2024-06-27 18:44:53,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 488 transitions, 8289 flow [2024-06-27 18:44:55,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 488 transitions, 8130 flow, removed 55 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:55,183 INFO L231 Difference]: Finished difference. Result has 410 places, 459 transitions, 7207 flow [2024-06-27 18:44:55,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6894, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7207, PETRI_PLACES=410, PETRI_TRANSITIONS=459} [2024-06-27 18:44:55,184 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-27 18:44:55,184 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 459 transitions, 7207 flow [2024-06-27 18:44:55,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:55,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:55,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:55,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:44:55,184 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:55,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:55,185 INFO L85 PathProgramCache]: Analyzing trace with hash 741015730, now seen corresponding path program 15 times [2024-06-27 18:44:55,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:55,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390193528] [2024-06-27 18:44:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:55,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:56,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:56,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390193528] [2024-06-27 18:44:56,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390193528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:56,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:56,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:56,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964019278] [2024-06-27 18:44:56,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:56,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:56,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:56,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:56,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:56,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:56,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 459 transitions, 7207 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:56,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:56,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:56,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:57,339 INFO L124 PetriNetUnfolderBase]: 2266/3895 cut-off events. [2024-06-27 18:44:57,339 INFO L125 PetriNetUnfolderBase]: For 221055/221055 co-relation queries the response was YES. [2024-06-27 18:44:57,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28907 conditions, 3895 events. 2266/3895 cut-off events. For 221055/221055 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 24222 event pairs, 582 based on Foata normal form. 2/3716 useless extension candidates. Maximal degree in co-relation 28713. Up to 3263 conditions per place. [2024-06-27 18:44:57,379 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 381 selfloop transitions, 104 changer transitions 0/492 dead transitions. [2024-06-27 18:44:57,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 492 transitions, 8467 flow [2024-06-27 18:44:57,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:57,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:44:57,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 18:44:57,381 INFO L175 Difference]: Start difference. First operand has 410 places, 459 transitions, 7207 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:44:57,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 492 transitions, 8467 flow [2024-06-27 18:44:58,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 492 transitions, 8170 flow, removed 57 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:58,671 INFO L231 Difference]: Finished difference. Result has 412 places, 461 transitions, 7249 flow [2024-06-27 18:44:58,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6910, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7249, PETRI_PLACES=412, PETRI_TRANSITIONS=461} [2024-06-27 18:44:58,671 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-27 18:44:58,671 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 461 transitions, 7249 flow [2024-06-27 18:44:58,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:58,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:58,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:58,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:44:58,672 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:58,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:58,672 INFO L85 PathProgramCache]: Analyzing trace with hash 256316936, now seen corresponding path program 16 times [2024-06-27 18:44:58,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:58,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871206267] [2024-06-27 18:44:58,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:58,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:59,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:59,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871206267] [2024-06-27 18:44:59,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871206267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:59,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:59,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:59,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326415205] [2024-06-27 18:44:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:59,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:59,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:59,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:44:59,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 461 transitions, 7249 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:59,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:59,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:44:59,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:00,673 INFO L124 PetriNetUnfolderBase]: 2282/3925 cut-off events. [2024-06-27 18:45:00,674 INFO L125 PetriNetUnfolderBase]: For 226022/226022 co-relation queries the response was YES. [2024-06-27 18:45:00,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29175 conditions, 3925 events. 2282/3925 cut-off events. For 226022/226022 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 24490 event pairs, 459 based on Foata normal form. 2/3743 useless extension candidates. Maximal degree in co-relation 28980. Up to 3211 conditions per place. [2024-06-27 18:45:00,725 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 400 selfloop transitions, 87 changer transitions 0/494 dead transitions. [2024-06-27 18:45:00,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 494 transitions, 8513 flow [2024-06-27 18:45:00,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:00,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:45:00,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:45:00,727 INFO L175 Difference]: Start difference. First operand has 412 places, 461 transitions, 7249 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:45:00,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 494 transitions, 8513 flow [2024-06-27 18:45:02,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 494 transitions, 8190 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:02,271 INFO L231 Difference]: Finished difference. Result has 413 places, 463 transitions, 7253 flow [2024-06-27 18:45:02,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6926, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7253, PETRI_PLACES=413, PETRI_TRANSITIONS=463} [2024-06-27 18:45:02,271 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-27 18:45:02,271 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 463 transitions, 7253 flow [2024-06-27 18:45:02,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:02,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:02,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:02,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:45:02,272 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:02,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:02,273 INFO L85 PathProgramCache]: Analyzing trace with hash 457946622, now seen corresponding path program 17 times [2024-06-27 18:45:02,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:02,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677681648] [2024-06-27 18:45:02,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:02,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:03,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:03,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677681648] [2024-06-27 18:45:03,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677681648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:03,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:03,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:03,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624882669] [2024-06-27 18:45:03,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:03,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:03,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:03,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:03,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:03,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:03,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 463 transitions, 7253 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:03,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:03,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:03,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:04,371 INFO L124 PetriNetUnfolderBase]: 2317/3990 cut-off events. [2024-06-27 18:45:04,371 INFO L125 PetriNetUnfolderBase]: For 246757/246757 co-relation queries the response was YES. [2024-06-27 18:45:04,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30135 conditions, 3990 events. 2317/3990 cut-off events. For 246757/246757 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 25115 event pairs, 588 based on Foata normal form. 2/3805 useless extension candidates. Maximal degree in co-relation 29939. Up to 3069 conditions per place. [2024-06-27 18:45:04,423 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 370 selfloop transitions, 121 changer transitions 0/498 dead transitions. [2024-06-27 18:45:04,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 498 transitions, 8879 flow [2024-06-27 18:45:04,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:04,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:04,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:45:04,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 18:45:04,425 INFO L175 Difference]: Start difference. First operand has 413 places, 463 transitions, 7253 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:45:04,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 498 transitions, 8879 flow [2024-06-27 18:45:06,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 498 transitions, 8568 flow, removed 79 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:06,095 INFO L231 Difference]: Finished difference. Result has 415 places, 467 transitions, 7468 flow [2024-06-27 18:45:06,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6972, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7468, PETRI_PLACES=415, PETRI_TRANSITIONS=467} [2024-06-27 18:45:06,095 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 374 predicate places. [2024-06-27 18:45:06,095 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 467 transitions, 7468 flow [2024-06-27 18:45:06,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:06,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:06,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:06,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:45:06,096 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:06,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:06,097 INFO L85 PathProgramCache]: Analyzing trace with hash 458090772, now seen corresponding path program 18 times [2024-06-27 18:45:06,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:06,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607448232] [2024-06-27 18:45:06,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:06,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:06,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:06,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:06,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607448232] [2024-06-27 18:45:06,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607448232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:06,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:06,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:06,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252878921] [2024-06-27 18:45:06,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:06,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:06,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:06,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:06,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:06,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:06,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 467 transitions, 7468 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:06,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:06,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:06,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:08,024 INFO L124 PetriNetUnfolderBase]: 2333/4020 cut-off events. [2024-06-27 18:45:08,024 INFO L125 PetriNetUnfolderBase]: For 237684/237684 co-relation queries the response was YES. [2024-06-27 18:45:08,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30232 conditions, 4020 events. 2333/4020 cut-off events. For 237684/237684 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 25313 event pairs, 614 based on Foata normal form. 2/3841 useless extension candidates. Maximal degree in co-relation 30035. Up to 3357 conditions per place. [2024-06-27 18:45:08,078 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 376 selfloop transitions, 115 changer transitions 0/498 dead transitions. [2024-06-27 18:45:08,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 498 transitions, 8940 flow [2024-06-27 18:45:08,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:08,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:08,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:45:08,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:45:08,080 INFO L175 Difference]: Start difference. First operand has 415 places, 467 transitions, 7468 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:45:08,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 498 transitions, 8940 flow [2024-06-27 18:45:09,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 498 transitions, 8688 flow, removed 71 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:09,663 INFO L231 Difference]: Finished difference. Result has 419 places, 469 transitions, 7584 flow [2024-06-27 18:45:09,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7232, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7584, PETRI_PLACES=419, PETRI_TRANSITIONS=469} [2024-06-27 18:45:09,664 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 18:45:09,664 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 469 transitions, 7584 flow [2024-06-27 18:45:09,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:09,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:09,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:09,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:45:09,664 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:09,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:09,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1260247137, now seen corresponding path program 3 times [2024-06-27 18:45:09,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:09,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361582494] [2024-06-27 18:45:09,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:09,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:10,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361582494] [2024-06-27 18:45:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361582494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:10,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:10,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137655409] [2024-06-27 18:45:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:10,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:10,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:10,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:10,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 469 transitions, 7584 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:10,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:10,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:10,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:11,714 INFO L124 PetriNetUnfolderBase]: 2331/4018 cut-off events. [2024-06-27 18:45:11,715 INFO L125 PetriNetUnfolderBase]: For 221054/221054 co-relation queries the response was YES. [2024-06-27 18:45:11,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30114 conditions, 4018 events. 2331/4018 cut-off events. For 221054/221054 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25299 event pairs, 656 based on Foata normal form. 1/3833 useless extension candidates. Maximal degree in co-relation 29915. Up to 3559 conditions per place. [2024-06-27 18:45:11,765 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 369 selfloop transitions, 119 changer transitions 0/495 dead transitions. [2024-06-27 18:45:11,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 495 transitions, 8754 flow [2024-06-27 18:45:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2024-06-27 18:45:11,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 18:45:11,767 INFO L175 Difference]: Start difference. First operand has 419 places, 469 transitions, 7584 flow. Second operand 10 states and 148 transitions. [2024-06-27 18:45:11,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 495 transitions, 8754 flow [2024-06-27 18:45:13,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 495 transitions, 8412 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:13,322 INFO L231 Difference]: Finished difference. Result has 420 places, 471 transitions, 7582 flow [2024-06-27 18:45:13,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7242, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7582, PETRI_PLACES=420, PETRI_TRANSITIONS=471} [2024-06-27 18:45:13,322 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-27 18:45:13,322 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 471 transitions, 7582 flow [2024-06-27 18:45:13,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:13,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:13,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:13,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:45:13,323 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:13,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:13,323 INFO L85 PathProgramCache]: Analyzing trace with hash 458096352, now seen corresponding path program 19 times [2024-06-27 18:45:13,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:13,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365303779] [2024-06-27 18:45:13,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:13,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:14,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:14,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365303779] [2024-06-27 18:45:14,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365303779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:14,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:14,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:14,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538383027] [2024-06-27 18:45:14,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:14,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:14,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:14,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:14,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:14,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:14,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 471 transitions, 7582 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:14,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:14,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:14,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:15,454 INFO L124 PetriNetUnfolderBase]: 2328/4013 cut-off events. [2024-06-27 18:45:15,454 INFO L125 PetriNetUnfolderBase]: For 211912/211912 co-relation queries the response was YES. [2024-06-27 18:45:15,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29647 conditions, 4013 events. 2328/4013 cut-off events. For 211912/211912 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 25288 event pairs, 656 based on Foata normal form. 2/3831 useless extension candidates. Maximal degree in co-relation 29448. Up to 3532 conditions per place. [2024-06-27 18:45:15,508 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 379 selfloop transitions, 111 changer transitions 0/497 dead transitions. [2024-06-27 18:45:15,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 497 transitions, 8700 flow [2024-06-27 18:45:15,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 150 transitions. [2024-06-27 18:45:15,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40540540540540543 [2024-06-27 18:45:15,509 INFO L175 Difference]: Start difference. First operand has 420 places, 471 transitions, 7582 flow. Second operand 10 states and 150 transitions. [2024-06-27 18:45:15,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 497 transitions, 8700 flow [2024-06-27 18:45:17,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 497 transitions, 8360 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:17,083 INFO L231 Difference]: Finished difference. Result has 422 places, 471 transitions, 7486 flow [2024-06-27 18:45:17,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7242, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7486, PETRI_PLACES=422, PETRI_TRANSITIONS=471} [2024-06-27 18:45:17,084 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-27 18:45:17,084 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 471 transitions, 7486 flow [2024-06-27 18:45:17,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:17,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:17,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:17,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:45:17,085 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:17,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:17,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1116147078, now seen corresponding path program 2 times [2024-06-27 18:45:17,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089647983] [2024-06-27 18:45:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:17,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:17,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:17,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089647983] [2024-06-27 18:45:17,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089647983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:17,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:17,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:17,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556439448] [2024-06-27 18:45:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:17,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:17,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:17,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:17,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:17,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:17,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 471 transitions, 7486 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:17,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:17,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:17,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:19,006 INFO L124 PetriNetUnfolderBase]: 2324/4001 cut-off events. [2024-06-27 18:45:19,006 INFO L125 PetriNetUnfolderBase]: For 195252/195252 co-relation queries the response was YES. [2024-06-27 18:45:19,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29142 conditions, 4001 events. 2324/4001 cut-off events. For 195252/195252 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 25094 event pairs, 573 based on Foata normal form. 2/3814 useless extension candidates. Maximal degree in co-relation 28942. Up to 3169 conditions per place. [2024-06-27 18:45:19,165 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 317 selfloop transitions, 171 changer transitions 0/495 dead transitions. [2024-06-27 18:45:19,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 495 transitions, 8598 flow [2024-06-27 18:45:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:19,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:19,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:45:19,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-27 18:45:19,166 INFO L175 Difference]: Start difference. First operand has 422 places, 471 transitions, 7486 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:45:19,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 495 transitions, 8598 flow [2024-06-27 18:45:20,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 495 transitions, 8296 flow, removed 16 selfloop flow, removed 11 redundant places. [2024-06-27 18:45:20,554 INFO L231 Difference]: Finished difference. Result has 422 places, 472 transitions, 7620 flow [2024-06-27 18:45:20,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7184, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7620, PETRI_PLACES=422, PETRI_TRANSITIONS=472} [2024-06-27 18:45:20,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-27 18:45:20,555 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 472 transitions, 7620 flow [2024-06-27 18:45:20,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:20,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:20,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:20,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:45:20,555 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:20,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -425993163, now seen corresponding path program 2 times [2024-06-27 18:45:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623211324] [2024-06-27 18:45:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:20,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:21,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:21,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:21,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623211324] [2024-06-27 18:45:21,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623211324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:21,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:21,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:21,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26457955] [2024-06-27 18:45:21,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:21,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:21,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:21,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:21,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:21,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 472 transitions, 7620 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:21,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:21,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:21,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:22,778 INFO L124 PetriNetUnfolderBase]: 2408/4160 cut-off events. [2024-06-27 18:45:22,779 INFO L125 PetriNetUnfolderBase]: For 263734/263734 co-relation queries the response was YES. [2024-06-27 18:45:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30793 conditions, 4160 events. 2408/4160 cut-off events. For 263734/263734 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 26321 event pairs, 612 based on Foata normal form. 12/3983 useless extension candidates. Maximal degree in co-relation 30592. Up to 3147 conditions per place. [2024-06-27 18:45:22,835 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 324 selfloop transitions, 175 changer transitions 0/506 dead transitions. [2024-06-27 18:45:22,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 506 transitions, 8936 flow [2024-06-27 18:45:22,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:45:22,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 18:45:22,837 INFO L175 Difference]: Start difference. First operand has 422 places, 472 transitions, 7620 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:45:22,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 506 transitions, 8936 flow [2024-06-27 18:45:24,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 506 transitions, 8382 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 18:45:24,364 INFO L231 Difference]: Finished difference. Result has 421 places, 474 transitions, 7550 flow [2024-06-27 18:45:24,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7066, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7550, PETRI_PLACES=421, PETRI_TRANSITIONS=474} [2024-06-27 18:45:24,364 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-27 18:45:24,364 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 474 transitions, 7550 flow [2024-06-27 18:45:24,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:24,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:24,365 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:24,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:45:24,365 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:24,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:24,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1137180000, now seen corresponding path program 20 times [2024-06-27 18:45:24,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:24,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688113723] [2024-06-27 18:45:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:24,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:25,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:25,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688113723] [2024-06-27 18:45:25,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688113723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:25,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:25,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:25,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381041499] [2024-06-27 18:45:25,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:25,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:25,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:25,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:25,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:25,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 474 transitions, 7550 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:25,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:25,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:25,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:26,498 INFO L124 PetriNetUnfolderBase]: 2424/4189 cut-off events. [2024-06-27 18:45:26,498 INFO L125 PetriNetUnfolderBase]: For 208050/208050 co-relation queries the response was YES. [2024-06-27 18:45:26,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31015 conditions, 4189 events. 2424/4189 cut-off events. For 208050/208050 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 26606 event pairs, 647 based on Foata normal form. 2/4002 useless extension candidates. Maximal degree in co-relation 30814. Up to 3591 conditions per place. [2024-06-27 18:45:26,556 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 385 selfloop transitions, 109 changer transitions 0/501 dead transitions. [2024-06-27 18:45:26,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 501 transitions, 8796 flow [2024-06-27 18:45:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:26,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:45:26,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 18:45:26,557 INFO L175 Difference]: Start difference. First operand has 421 places, 474 transitions, 7550 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:45:26,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 501 transitions, 8796 flow [2024-06-27 18:45:28,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 501 transitions, 8326 flow, removed 47 selfloop flow, removed 11 redundant places. [2024-06-27 18:45:28,086 INFO L231 Difference]: Finished difference. Result has 420 places, 476 transitions, 7430 flow [2024-06-27 18:45:28,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7082, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7430, PETRI_PLACES=420, PETRI_TRANSITIONS=476} [2024-06-27 18:45:28,087 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 379 predicate places. [2024-06-27 18:45:28,087 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 476 transitions, 7430 flow [2024-06-27 18:45:28,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:28,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:28,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:28,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:45:28,088 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:28,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:28,088 INFO L85 PathProgramCache]: Analyzing trace with hash -937878210, now seen corresponding path program 21 times [2024-06-27 18:45:28,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:28,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349332707] [2024-06-27 18:45:28,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:28,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:28,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:28,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349332707] [2024-06-27 18:45:28,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349332707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:28,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:28,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250166759] [2024-06-27 18:45:28,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:28,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:28,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:28,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 476 transitions, 7430 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:28,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:28,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:28,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:30,174 INFO L124 PetriNetUnfolderBase]: 2440/4215 cut-off events. [2024-06-27 18:45:30,174 INFO L125 PetriNetUnfolderBase]: For 201846/201846 co-relation queries the response was YES. [2024-06-27 18:45:30,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30618 conditions, 4215 events. 2440/4215 cut-off events. For 201846/201846 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 26851 event pairs, 629 based on Foata normal form. 2/4028 useless extension candidates. Maximal degree in co-relation 30416. Up to 3619 conditions per place. [2024-06-27 18:45:30,233 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 375 selfloop transitions, 121 changer transitions 0/503 dead transitions. [2024-06-27 18:45:30,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 503 transitions, 8682 flow [2024-06-27 18:45:30,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:30,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:45:30,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 18:45:30,235 INFO L175 Difference]: Start difference. First operand has 420 places, 476 transitions, 7430 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:45:30,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 503 transitions, 8682 flow [2024-06-27 18:45:31,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 503 transitions, 8350 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:31,722 INFO L231 Difference]: Finished difference. Result has 422 places, 478 transitions, 7474 flow [2024-06-27 18:45:31,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7102, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7474, PETRI_PLACES=422, PETRI_TRANSITIONS=478} [2024-06-27 18:45:31,726 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 381 predicate places. [2024-06-27 18:45:31,726 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 478 transitions, 7474 flow [2024-06-27 18:45:31,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:31,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:31,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:31,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:45:31,727 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:31,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1425313764, now seen corresponding path program 22 times [2024-06-27 18:45:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233989821] [2024-06-27 18:45:31,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:32,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:32,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233989821] [2024-06-27 18:45:32,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233989821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:32,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:32,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:32,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012944640] [2024-06-27 18:45:32,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:32,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:32,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:32,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:32,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:32,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:32,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 478 transitions, 7474 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:32,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:32,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:32,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:33,927 INFO L124 PetriNetUnfolderBase]: 2475/4277 cut-off events. [2024-06-27 18:45:33,927 INFO L125 PetriNetUnfolderBase]: For 216443/216443 co-relation queries the response was YES. [2024-06-27 18:45:33,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31403 conditions, 4277 events. 2475/4277 cut-off events. For 216443/216443 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27371 event pairs, 628 based on Foata normal form. 2/4093 useless extension candidates. Maximal degree in co-relation 31200. Up to 3553 conditions per place. [2024-06-27 18:45:33,991 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 372 selfloop transitions, 131 changer transitions 0/510 dead transitions. [2024-06-27 18:45:33,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 510 transitions, 9088 flow [2024-06-27 18:45:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:33,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:45:34,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:45:34,017 INFO L175 Difference]: Start difference. First operand has 422 places, 478 transitions, 7474 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:45:34,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 510 transitions, 9088 flow [2024-06-27 18:45:35,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 510 transitions, 8726 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:35,455 INFO L231 Difference]: Finished difference. Result has 424 places, 482 transitions, 7632 flow [2024-06-27 18:45:35,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7122, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7632, PETRI_PLACES=424, PETRI_TRANSITIONS=482} [2024-06-27 18:45:35,456 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-27 18:45:35,456 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 482 transitions, 7632 flow [2024-06-27 18:45:35,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:35,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:35,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:35,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:45:35,456 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:35,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:35,457 INFO L85 PathProgramCache]: Analyzing trace with hash -930526560, now seen corresponding path program 23 times [2024-06-27 18:45:35,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:35,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581612569] [2024-06-27 18:45:35,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:35,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:36,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581612569] [2024-06-27 18:45:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581612569] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:36,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:36,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:36,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986191644] [2024-06-27 18:45:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:36,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:36,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:36,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:36,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 482 transitions, 7632 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:36,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:36,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:36,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:37,811 INFO L124 PetriNetUnfolderBase]: 2472/4272 cut-off events. [2024-06-27 18:45:37,812 INFO L125 PetriNetUnfolderBase]: For 201988/201988 co-relation queries the response was YES. [2024-06-27 18:45:37,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30968 conditions, 4272 events. 2472/4272 cut-off events. For 201988/201988 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 27310 event pairs, 641 based on Foata normal form. 2/4084 useless extension candidates. Maximal degree in co-relation 30764. Up to 3675 conditions per place. [2024-06-27 18:45:37,856 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 365 selfloop transitions, 135 changer transitions 0/507 dead transitions. [2024-06-27 18:45:37,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 507 transitions, 8770 flow [2024-06-27 18:45:37,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 152 transitions. [2024-06-27 18:45:37,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41081081081081083 [2024-06-27 18:45:37,857 INFO L175 Difference]: Start difference. First operand has 424 places, 482 transitions, 7632 flow. Second operand 10 states and 152 transitions. [2024-06-27 18:45:37,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 507 transitions, 8770 flow [2024-06-27 18:45:39,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 507 transitions, 8403 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:39,408 INFO L231 Difference]: Finished difference. Result has 428 places, 482 transitions, 7543 flow [2024-06-27 18:45:39,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7265, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7543, PETRI_PLACES=428, PETRI_TRANSITIONS=482} [2024-06-27 18:45:39,408 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-27 18:45:39,408 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 482 transitions, 7543 flow [2024-06-27 18:45:39,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:39,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:39,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:39,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:45:39,409 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:39,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:39,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1137185580, now seen corresponding path program 24 times [2024-06-27 18:45:39,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:39,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931989535] [2024-06-27 18:45:39,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:39,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:40,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:40,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:40,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931989535] [2024-06-27 18:45:40,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931989535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:40,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:40,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:40,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916813437] [2024-06-27 18:45:40,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:40,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:40,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:40,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:40,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:40,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:40,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 482 transitions, 7543 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:40,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:40,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:40,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:41,770 INFO L124 PetriNetUnfolderBase]: 2488/4300 cut-off events. [2024-06-27 18:45:41,770 INFO L125 PetriNetUnfolderBase]: For 200678/200678 co-relation queries the response was YES. [2024-06-27 18:45:41,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31230 conditions, 4300 events. 2488/4300 cut-off events. For 200678/200678 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 27528 event pairs, 661 based on Foata normal form. 2/4114 useless extension candidates. Maximal degree in co-relation 31024. Up to 3615 conditions per place. [2024-06-27 18:45:41,829 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 389 selfloop transitions, 115 changer transitions 0/511 dead transitions. [2024-06-27 18:45:41,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 511 transitions, 8823 flow [2024-06-27 18:45:41,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:41,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:41,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:45:41,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 18:45:41,830 INFO L175 Difference]: Start difference. First operand has 428 places, 482 transitions, 7543 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:45:41,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 511 transitions, 8823 flow [2024-06-27 18:45:43,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 511 transitions, 8535 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:43,841 INFO L231 Difference]: Finished difference. Result has 429 places, 484 transitions, 7619 flow [2024-06-27 18:45:43,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7255, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7619, PETRI_PLACES=429, PETRI_TRANSITIONS=484} [2024-06-27 18:45:43,841 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-27 18:45:43,841 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 484 transitions, 7619 flow [2024-06-27 18:45:43,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:43,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:43,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:43,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:45:43,842 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:43,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:43,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1137329730, now seen corresponding path program 25 times [2024-06-27 18:45:43,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:43,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477549417] [2024-06-27 18:45:43,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:43,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:43,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:44,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:44,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477549417] [2024-06-27 18:45:44,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477549417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:44,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:44,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:44,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778920231] [2024-06-27 18:45:44,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:44,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:44,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:44,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:44,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:44,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:44,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 484 transitions, 7619 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:44,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:44,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:44,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:46,197 INFO L124 PetriNetUnfolderBase]: 2504/4329 cut-off events. [2024-06-27 18:45:46,197 INFO L125 PetriNetUnfolderBase]: For 209253/209253 co-relation queries the response was YES. [2024-06-27 18:45:46,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31629 conditions, 4329 events. 2504/4329 cut-off events. For 209253/209253 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 27756 event pairs, 657 based on Foata normal form. 2/4150 useless extension candidates. Maximal degree in co-relation 31422. Up to 3343 conditions per place. [2024-06-27 18:45:46,257 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 371 selfloop transitions, 137 changer transitions 0/515 dead transitions. [2024-06-27 18:45:46,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 515 transitions, 8923 flow [2024-06-27 18:45:46,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:45:46,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:45:46,258 INFO L175 Difference]: Start difference. First operand has 429 places, 484 transitions, 7619 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:45:46,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 515 transitions, 8923 flow [2024-06-27 18:45:48,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 515 transitions, 8575 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:48,211 INFO L231 Difference]: Finished difference. Result has 431 places, 486 transitions, 7683 flow [2024-06-27 18:45:48,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7275, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7683, PETRI_PLACES=431, PETRI_TRANSITIONS=486} [2024-06-27 18:45:48,211 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-27 18:45:48,211 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 486 transitions, 7683 flow [2024-06-27 18:45:48,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:48,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:48,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:48,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:45:48,212 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:48,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1573058976, now seen corresponding path program 26 times [2024-06-27 18:45:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:48,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491209296] [2024-06-27 18:45:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:48,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:49,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:49,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:49,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491209296] [2024-06-27 18:45:49,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491209296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:49,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:49,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:49,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269107463] [2024-06-27 18:45:49,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:49,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:49,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:49,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:49,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:49,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:49,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 486 transitions, 7683 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:49,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:49,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:49,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:50,373 INFO L124 PetriNetUnfolderBase]: 2520/4357 cut-off events. [2024-06-27 18:45:50,373 INFO L125 PetriNetUnfolderBase]: For 209764/209764 co-relation queries the response was YES. [2024-06-27 18:45:50,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31908 conditions, 4357 events. 2520/4357 cut-off events. For 209764/209764 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 27973 event pairs, 678 based on Foata normal form. 2/4167 useless extension candidates. Maximal degree in co-relation 31700. Up to 3620 conditions per place. [2024-06-27 18:45:50,431 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 378 selfloop transitions, 126 changer transitions 0/511 dead transitions. [2024-06-27 18:45:50,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 511 transitions, 8949 flow [2024-06-27 18:45:50,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:50,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:50,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:45:50,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:45:50,433 INFO L175 Difference]: Start difference. First operand has 431 places, 486 transitions, 7683 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:45:50,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 511 transitions, 8949 flow [2024-06-27 18:45:52,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 511 transitions, 8557 flow, removed 62 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:52,131 INFO L231 Difference]: Finished difference. Result has 433 places, 488 transitions, 7678 flow [2024-06-27 18:45:52,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7295, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7678, PETRI_PLACES=433, PETRI_TRANSITIONS=488} [2024-06-27 18:45:52,131 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-27 18:45:52,131 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 488 transitions, 7678 flow [2024-06-27 18:45:52,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:52,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:52,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:52,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:45:52,132 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:52,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash -159104610, now seen corresponding path program 27 times [2024-06-27 18:45:52,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:52,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332104988] [2024-06-27 18:45:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:52,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:53,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:53,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332104988] [2024-06-27 18:45:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332104988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:53,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:53,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:53,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359012806] [2024-06-27 18:45:53,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:53,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:53,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:53,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:53,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:53,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:53,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 488 transitions, 7678 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:53,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:53,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:53,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:54,435 INFO L124 PetriNetUnfolderBase]: 2536/4385 cut-off events. [2024-06-27 18:45:54,435 INFO L125 PetriNetUnfolderBase]: For 209626/209627 co-relation queries the response was YES. [2024-06-27 18:45:54,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31921 conditions, 4385 events. 2536/4385 cut-off events. For 209626/209627 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 28220 event pairs, 678 based on Foata normal form. 2/4195 useless extension candidates. Maximal degree in co-relation 31712. Up to 3604 conditions per place. [2024-06-27 18:45:54,501 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 376 selfloop transitions, 133 changer transitions 0/516 dead transitions. [2024-06-27 18:45:54,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 516 transitions, 8973 flow [2024-06-27 18:45:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:54,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:45:54,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 18:45:54,503 INFO L175 Difference]: Start difference. First operand has 433 places, 488 transitions, 7678 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:45:54,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 516 transitions, 8973 flow [2024-06-27 18:45:56,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 516 transitions, 8606 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:56,240 INFO L231 Difference]: Finished difference. Result has 436 places, 490 transitions, 7712 flow [2024-06-27 18:45:56,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7311, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7712, PETRI_PLACES=436, PETRI_TRANSITIONS=490} [2024-06-27 18:45:56,241 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-27 18:45:56,241 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 490 transitions, 7712 flow [2024-06-27 18:45:56,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:56,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:56,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:56,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:45:56,241 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:56,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1573208706, now seen corresponding path program 28 times [2024-06-27 18:45:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:56,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405221790] [2024-06-27 18:45:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:56,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:57,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:57,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:57,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405221790] [2024-06-27 18:45:57,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405221790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:57,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:57,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:57,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427214351] [2024-06-27 18:45:57,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:57,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:57,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:57,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:57,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:45:57,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 490 transitions, 7712 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:57,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:57,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:45:57,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:58,522 INFO L124 PetriNetUnfolderBase]: 2555/4420 cut-off events. [2024-06-27 18:45:58,522 INFO L125 PetriNetUnfolderBase]: For 216630/216630 co-relation queries the response was YES. [2024-06-27 18:45:58,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32272 conditions, 4420 events. 2555/4420 cut-off events. For 216630/216630 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 28490 event pairs, 679 based on Foata normal form. 2/4233 useless extension candidates. Maximal degree in co-relation 32062. Up to 3470 conditions per place. [2024-06-27 18:45:58,582 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 378 selfloop transitions, 137 changer transitions 0/522 dead transitions. [2024-06-27 18:45:58,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 522 transitions, 9378 flow [2024-06-27 18:45:58,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:45:58,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 18:45:58,584 INFO L175 Difference]: Start difference. First operand has 436 places, 490 transitions, 7712 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:45:58,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 522 transitions, 9378 flow [2024-06-27 18:46:00,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 522 transitions, 8993 flow, removed 61 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:00,494 INFO L231 Difference]: Finished difference. Result has 437 places, 494 transitions, 7870 flow [2024-06-27 18:46:00,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7327, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7870, PETRI_PLACES=437, PETRI_TRANSITIONS=494} [2024-06-27 18:46:00,494 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-27 18:46:00,495 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 494 transitions, 7870 flow [2024-06-27 18:46:00,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:00,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:00,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:00,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:46:00,495 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:00,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:00,495 INFO L85 PathProgramCache]: Analyzing trace with hash -153526904, now seen corresponding path program 3 times [2024-06-27 18:46:00,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:00,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257273129] [2024-06-27 18:46:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:00,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257273129] [2024-06-27 18:46:01,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257273129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:01,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:01,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:01,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368002274] [2024-06-27 18:46:01,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:01,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:01,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:01,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:01,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:01,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:01,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 494 transitions, 7870 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:01,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:01,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:01,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:02,644 INFO L124 PetriNetUnfolderBase]: 2551/4414 cut-off events. [2024-06-27 18:46:02,645 INFO L125 PetriNetUnfolderBase]: For 204871/204871 co-relation queries the response was YES. [2024-06-27 18:46:02,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31827 conditions, 4414 events. 2551/4414 cut-off events. For 204871/204871 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 28438 event pairs, 723 based on Foata normal form. 2/4221 useless extension candidates. Maximal degree in co-relation 31616. Up to 3342 conditions per place. [2024-06-27 18:46:02,695 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 353 selfloop transitions, 159 changer transitions 0/519 dead transitions. [2024-06-27 18:46:02,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 519 transitions, 9044 flow [2024-06-27 18:46:02,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:02,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:02,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:46:02,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 18:46:02,697 INFO L175 Difference]: Start difference. First operand has 437 places, 494 transitions, 7870 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:46:02,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 519 transitions, 9044 flow [2024-06-27 18:46:04,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 519 transitions, 8715 flow, removed 89 selfloop flow, removed 6 redundant places. [2024-06-27 18:46:04,534 INFO L231 Difference]: Finished difference. Result has 443 places, 497 transitions, 7939 flow [2024-06-27 18:46:04,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7541, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7939, PETRI_PLACES=443, PETRI_TRANSITIONS=497} [2024-06-27 18:46:04,534 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-27 18:46:04,534 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 497 transitions, 7939 flow [2024-06-27 18:46:04,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:04,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:04,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:04,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 18:46:04,535 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:04,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:04,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1373757186, now seen corresponding path program 29 times [2024-06-27 18:46:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:04,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787490950] [2024-06-27 18:46:04,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:04,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:05,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:05,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787490950] [2024-06-27 18:46:05,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787490950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:05,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:05,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:05,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007813437] [2024-06-27 18:46:05,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:05,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:05,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:05,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:05,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:05,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 497 transitions, 7939 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:05,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:05,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:05,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:06,779 INFO L124 PetriNetUnfolderBase]: 2567/4443 cut-off events. [2024-06-27 18:46:06,780 INFO L125 PetriNetUnfolderBase]: For 204506/204506 co-relation queries the response was YES. [2024-06-27 18:46:06,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32436 conditions, 4443 events. 2567/4443 cut-off events. For 204506/204506 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 28686 event pairs, 692 based on Foata normal form. 2/4250 useless extension candidates. Maximal degree in co-relation 32221. Up to 3703 conditions per place. [2024-06-27 18:46:06,839 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 393 selfloop transitions, 123 changer transitions 0/523 dead transitions. [2024-06-27 18:46:06,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 523 transitions, 9219 flow [2024-06-27 18:46:06,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:06,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:06,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:46:06,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 18:46:06,841 INFO L175 Difference]: Start difference. First operand has 443 places, 497 transitions, 7939 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:46:06,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 523 transitions, 9219 flow [2024-06-27 18:46:08,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 523 transitions, 8863 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:08,627 INFO L231 Difference]: Finished difference. Result has 443 places, 499 transitions, 7948 flow [2024-06-27 18:46:08,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7583, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7948, PETRI_PLACES=443, PETRI_TRANSITIONS=499} [2024-06-27 18:46:08,628 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 402 predicate places. [2024-06-27 18:46:08,628 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 499 transitions, 7948 flow [2024-06-27 18:46:08,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:08,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:08,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:08,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 18:46:08,628 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:08,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:08,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1366405536, now seen corresponding path program 30 times [2024-06-27 18:46:08,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:08,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841217472] [2024-06-27 18:46:08,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:08,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:09,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:09,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841217472] [2024-06-27 18:46:09,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841217472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:09,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:09,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:09,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554819938] [2024-06-27 18:46:09,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:09,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:09,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:09,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:09,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:09,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 499 transitions, 7948 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:09,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:09,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:09,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:10,797 INFO L124 PetriNetUnfolderBase]: 2583/4471 cut-off events. [2024-06-27 18:46:10,797 INFO L125 PetriNetUnfolderBase]: For 210351/210351 co-relation queries the response was YES. [2024-06-27 18:46:10,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32584 conditions, 4471 events. 2583/4471 cut-off events. For 210351/210351 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 28947 event pairs, 702 based on Foata normal form. 2/4278 useless extension candidates. Maximal degree in co-relation 32368. Up to 3731 conditions per place. [2024-06-27 18:46:10,865 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 394 selfloop transitions, 124 changer transitions 0/525 dead transitions. [2024-06-27 18:46:10,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 525 transitions, 9236 flow [2024-06-27 18:46:10,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:10,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:10,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:46:10,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:46:10,867 INFO L175 Difference]: Start difference. First operand has 443 places, 499 transitions, 7948 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:46:10,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 525 transitions, 9236 flow [2024-06-27 18:46:12,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 525 transitions, 8891 flow, removed 51 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:12,827 INFO L231 Difference]: Finished difference. Result has 445 places, 501 transitions, 7974 flow [2024-06-27 18:46:12,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7603, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7974, PETRI_PLACES=445, PETRI_TRANSITIONS=501} [2024-06-27 18:46:12,827 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 18:46:12,828 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 501 transitions, 7974 flow [2024-06-27 18:46:12,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:12,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:12,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:12,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 18:46:12,828 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:12,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:12,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1366128489, now seen corresponding path program 3 times [2024-06-27 18:46:12,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:12,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863052282] [2024-06-27 18:46:12,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:12,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:13,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:13,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:13,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863052282] [2024-06-27 18:46:13,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863052282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:13,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:13,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:13,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422278743] [2024-06-27 18:46:13,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:13,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:13,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:13,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:13,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:13,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:13,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 501 transitions, 7974 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:13,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:13,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:13,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:15,251 INFO L124 PetriNetUnfolderBase]: 2667/4631 cut-off events. [2024-06-27 18:46:15,252 INFO L125 PetriNetUnfolderBase]: For 286967/286967 co-relation queries the response was YES. [2024-06-27 18:46:15,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33783 conditions, 4631 events. 2667/4631 cut-off events. For 286967/286967 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30191 event pairs, 763 based on Foata normal form. 12/4447 useless extension candidates. Maximal degree in co-relation 33566. Up to 3406 conditions per place. [2024-06-27 18:46:15,317 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 366 selfloop transitions, 161 changer transitions 0/534 dead transitions. [2024-06-27 18:46:15,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 534 transitions, 9354 flow [2024-06-27 18:46:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:46:15,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:46:15,318 INFO L175 Difference]: Start difference. First operand has 445 places, 501 transitions, 7974 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:46:15,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 534 transitions, 9354 flow [2024-06-27 18:46:17,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 534 transitions, 9003 flow, removed 53 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:17,135 INFO L231 Difference]: Finished difference. Result has 448 places, 503 transitions, 8082 flow [2024-06-27 18:46:17,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7623, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8082, PETRI_PLACES=448, PETRI_TRANSITIONS=503} [2024-06-27 18:46:17,141 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 18:46:17,141 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 503 transitions, 8082 flow [2024-06-27 18:46:17,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:17,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:17,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:17,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 18:46:17,141 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:17,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1373762766, now seen corresponding path program 31 times [2024-06-27 18:46:17,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:17,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262796417] [2024-06-27 18:46:17,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:17,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:18,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:18,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262796417] [2024-06-27 18:46:18,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262796417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:18,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:18,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:18,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003792129] [2024-06-27 18:46:18,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:18,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:18,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:18,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:18,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 503 transitions, 8082 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:18,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:18,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:18,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:19,522 INFO L124 PetriNetUnfolderBase]: 2683/4660 cut-off events. [2024-06-27 18:46:19,522 INFO L125 PetriNetUnfolderBase]: For 229645/229645 co-relation queries the response was YES. [2024-06-27 18:46:19,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 4660 events. 2683/4660 cut-off events. For 229645/229645 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 30515 event pairs, 725 based on Foata normal form. 2/4467 useless extension candidates. Maximal degree in co-relation 33943. Up to 3853 conditions per place. [2024-06-27 18:46:19,590 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 396 selfloop transitions, 128 changer transitions 0/531 dead transitions. [2024-06-27 18:46:19,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 531 transitions, 9398 flow [2024-06-27 18:46:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:19,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:46:19,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 18:46:19,591 INFO L175 Difference]: Start difference. First operand has 448 places, 503 transitions, 8082 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:46:19,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 531 transitions, 9398 flow [2024-06-27 18:46:21,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 531 transitions, 8983 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:21,559 INFO L231 Difference]: Finished difference. Result has 449 places, 505 transitions, 8050 flow [2024-06-27 18:46:21,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7667, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8050, PETRI_PLACES=449, PETRI_TRANSITIONS=505} [2024-06-27 18:46:21,559 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 408 predicate places. [2024-06-27 18:46:21,559 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 505 transitions, 8050 flow [2024-06-27 18:46:21,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:21,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:21,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:21,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 18:46:21,560 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:21,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash 879586357, now seen corresponding path program 4 times [2024-06-27 18:46:21,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:21,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710295219] [2024-06-27 18:46:21,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:21,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:22,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:22,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710295219] [2024-06-27 18:46:22,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710295219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:22,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:22,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:22,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591562175] [2024-06-27 18:46:22,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:22,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:22,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:22,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:22,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:22,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:22,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 505 transitions, 8050 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:22,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:22,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:22,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:24,056 INFO L124 PetriNetUnfolderBase]: 2763/4822 cut-off events. [2024-06-27 18:46:24,056 INFO L125 PetriNetUnfolderBase]: For 298482/298482 co-relation queries the response was YES. [2024-06-27 18:46:24,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34646 conditions, 4822 events. 2763/4822 cut-off events. For 298482/298482 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 31993 event pairs, 1099 based on Foata normal form. 14/4639 useless extension candidates. Maximal degree in co-relation 34427. Up to 4458 conditions per place. [2024-06-27 18:46:24,122 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 505 selfloop transitions, 22 changer transitions 0/534 dead transitions. [2024-06-27 18:46:24,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 534 transitions, 9410 flow [2024-06-27 18:46:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:24,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:24,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 18:46:24,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3955773955773956 [2024-06-27 18:46:24,124 INFO L175 Difference]: Start difference. First operand has 449 places, 505 transitions, 8050 flow. Second operand 11 states and 161 transitions. [2024-06-27 18:46:24,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 534 transitions, 9410 flow [2024-06-27 18:46:25,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 534 transitions, 9017 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:25,920 INFO L231 Difference]: Finished difference. Result has 453 places, 507 transitions, 7850 flow [2024-06-27 18:46:25,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7657, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7850, PETRI_PLACES=453, PETRI_TRANSITIONS=507} [2024-06-27 18:46:25,921 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-27 18:46:25,921 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 507 transitions, 7850 flow [2024-06-27 18:46:25,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:25,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:25,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:25,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 18:46:25,922 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:25,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:25,922 INFO L85 PathProgramCache]: Analyzing trace with hash 890628247, now seen corresponding path program 5 times [2024-06-27 18:46:25,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:25,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343247908] [2024-06-27 18:46:25,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:25,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:26,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:26,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343247908] [2024-06-27 18:46:26,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343247908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:26,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:26,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:26,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234154723] [2024-06-27 18:46:26,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:26,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:26,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:26,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:26,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:27,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:27,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 507 transitions, 7850 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:27,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:27,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:27,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:28,426 INFO L124 PetriNetUnfolderBase]: 2779/4850 cut-off events. [2024-06-27 18:46:28,427 INFO L125 PetriNetUnfolderBase]: For 227468/227468 co-relation queries the response was YES. [2024-06-27 18:46:28,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34449 conditions, 4850 events. 2779/4850 cut-off events. For 227468/227468 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 32257 event pairs, 1109 based on Foata normal form. 2/4653 useless extension candidates. Maximal degree in co-relation 34228. Up to 4606 conditions per place. [2024-06-27 18:46:28,495 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 501 selfloop transitions, 26 changer transitions 0/534 dead transitions. [2024-06-27 18:46:28,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 534 transitions, 9182 flow [2024-06-27 18:46:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:28,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:28,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-27 18:46:28,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38063063063063063 [2024-06-27 18:46:28,497 INFO L175 Difference]: Start difference. First operand has 453 places, 507 transitions, 7850 flow. Second operand 12 states and 169 transitions. [2024-06-27 18:46:28,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 534 transitions, 9182 flow [2024-06-27 18:46:30,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 534 transitions, 9026 flow, removed 52 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:30,403 INFO L231 Difference]: Finished difference. Result has 455 places, 509 transitions, 7889 flow [2024-06-27 18:46:30,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7694, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7889, PETRI_PLACES=455, PETRI_TRANSITIONS=509} [2024-06-27 18:46:30,403 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 414 predicate places. [2024-06-27 18:46:30,404 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 509 transitions, 7889 flow [2024-06-27 18:46:30,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:30,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:30,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:30,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 18:46:30,404 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:30,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:30,405 INFO L85 PathProgramCache]: Analyzing trace with hash 317448702, now seen corresponding path program 32 times [2024-06-27 18:46:30,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:30,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760878153] [2024-06-27 18:46:30,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:30,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:31,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:31,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:31,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760878153] [2024-06-27 18:46:31,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760878153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:31,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:31,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:31,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986585047] [2024-06-27 18:46:31,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:31,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:31,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:31,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:31,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:31,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:31,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 509 transitions, 7889 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:31,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:31,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:31,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:32,743 INFO L124 PetriNetUnfolderBase]: 2795/4870 cut-off events. [2024-06-27 18:46:32,743 INFO L125 PetriNetUnfolderBase]: For 218830/218830 co-relation queries the response was YES. [2024-06-27 18:46:32,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34263 conditions, 4870 events. 2795/4870 cut-off events. For 218830/218830 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 32263 event pairs, 751 based on Foata normal form. 2/4674 useless extension candidates. Maximal degree in co-relation 34041. Up to 4121 conditions per place. [2024-06-27 18:46:32,810 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 389 selfloop transitions, 139 changer transitions 0/535 dead transitions. [2024-06-27 18:46:32,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 535 transitions, 9205 flow [2024-06-27 18:46:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:32,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:32,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:46:32,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42162162162162165 [2024-06-27 18:46:32,811 INFO L175 Difference]: Start difference. First operand has 455 places, 509 transitions, 7889 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:46:32,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 535 transitions, 9205 flow [2024-06-27 18:46:34,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 535 transitions, 9026 flow, removed 65 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:34,739 INFO L231 Difference]: Finished difference. Result has 455 places, 511 transitions, 8119 flow [2024-06-27 18:46:34,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7710, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8119, PETRI_PLACES=455, PETRI_TRANSITIONS=511} [2024-06-27 18:46:34,740 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 414 predicate places. [2024-06-27 18:46:34,740 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 511 transitions, 8119 flow [2024-06-27 18:46:34,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:34,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:34,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:34,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 18:46:34,741 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:34,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:34,741 INFO L85 PathProgramCache]: Analyzing trace with hash 891014197, now seen corresponding path program 6 times [2024-06-27 18:46:34,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:34,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849142599] [2024-06-27 18:46:34,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:34,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849142599] [2024-06-27 18:46:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849142599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:35,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:35,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234983448] [2024-06-27 18:46:35,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:35,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:35,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:35,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:35,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 511 transitions, 8119 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:35,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:35,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:35,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:37,337 INFO L124 PetriNetUnfolderBase]: 2811/4908 cut-off events. [2024-06-27 18:46:37,337 INFO L125 PetriNetUnfolderBase]: For 224289/224289 co-relation queries the response was YES. [2024-06-27 18:46:37,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34812 conditions, 4908 events. 2811/4908 cut-off events. For 224289/224289 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 32712 event pairs, 1116 based on Foata normal form. 2/4711 useless extension candidates. Maximal degree in co-relation 34589. Up to 4623 conditions per place. [2024-06-27 18:46:37,405 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 505 selfloop transitions, 28 changer transitions 0/540 dead transitions. [2024-06-27 18:46:37,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 540 transitions, 9501 flow [2024-06-27 18:46:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 169 transitions. [2024-06-27 18:46:37,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38063063063063063 [2024-06-27 18:46:37,407 INFO L175 Difference]: Start difference. First operand has 455 places, 511 transitions, 8119 flow. Second operand 12 states and 169 transitions. [2024-06-27 18:46:37,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 540 transitions, 9501 flow [2024-06-27 18:46:39,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 540 transitions, 9112 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:39,475 INFO L231 Difference]: Finished difference. Result has 460 places, 514 transitions, 7972 flow [2024-06-27 18:46:39,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7730, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7972, PETRI_PLACES=460, PETRI_TRANSITIONS=514} [2024-06-27 18:46:39,476 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-27 18:46:39,476 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 514 transitions, 7972 flow [2024-06-27 18:46:39,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:39,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:39,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:39,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 18:46:39,476 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:39,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:39,477 INFO L85 PathProgramCache]: Analyzing trace with hash 565610080, now seen corresponding path program 33 times [2024-06-27 18:46:39,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:39,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374772722] [2024-06-27 18:46:39,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:39,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:39,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:40,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374772722] [2024-06-27 18:46:40,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374772722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:40,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:40,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:40,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886740920] [2024-06-27 18:46:40,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:40,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:40,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:40,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:40,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:40,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 514 transitions, 7972 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:40,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:40,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:40,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:41,815 INFO L124 PetriNetUnfolderBase]: 2827/4928 cut-off events. [2024-06-27 18:46:41,815 INFO L125 PetriNetUnfolderBase]: For 226718/226718 co-relation queries the response was YES. [2024-06-27 18:46:41,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34666 conditions, 4928 events. 2827/4928 cut-off events. For 226718/226718 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 32794 event pairs, 761 based on Foata normal form. 2/4731 useless extension candidates. Maximal degree in co-relation 34441. Up to 4177 conditions per place. [2024-06-27 18:46:41,880 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 372 selfloop transitions, 160 changer transitions 0/539 dead transitions. [2024-06-27 18:46:41,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 539 transitions, 9294 flow [2024-06-27 18:46:41,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:46:41,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4135135135135135 [2024-06-27 18:46:41,881 INFO L175 Difference]: Start difference. First operand has 460 places, 514 transitions, 7972 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:46:41,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 539 transitions, 9294 flow [2024-06-27 18:46:43,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 539 transitions, 9092 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:43,980 INFO L231 Difference]: Finished difference. Result has 461 places, 516 transitions, 8225 flow [2024-06-27 18:46:43,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7770, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8225, PETRI_PLACES=461, PETRI_TRANSITIONS=516} [2024-06-27 18:46:43,980 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 420 predicate places. [2024-06-27 18:46:43,981 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 516 transitions, 8225 flow [2024-06-27 18:46:43,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:43,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:43,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:43,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 18:46:43,981 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:43,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash 565887127, now seen corresponding path program 7 times [2024-06-27 18:46:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:43,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392376470] [2024-06-27 18:46:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:43,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:44,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:44,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392376470] [2024-06-27 18:46:44,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392376470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:44,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:44,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:44,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902797653] [2024-06-27 18:46:44,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:44,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:44,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:44,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:44,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:45,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:45,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 516 transitions, 8225 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:45,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:45,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:45,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:46,515 INFO L124 PetriNetUnfolderBase]: 2907/5083 cut-off events. [2024-06-27 18:46:46,516 INFO L125 PetriNetUnfolderBase]: For 312524/312524 co-relation queries the response was YES. [2024-06-27 18:46:46,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36041 conditions, 5083 events. 2907/5083 cut-off events. For 312524/312524 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 34041 event pairs, 767 based on Foata normal form. 14/4896 useless extension candidates. Maximal degree in co-relation 35815. Up to 3858 conditions per place. [2024-06-27 18:46:46,582 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 347 selfloop transitions, 195 changer transitions 0/549 dead transitions. [2024-06-27 18:46:46,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 549 transitions, 9651 flow [2024-06-27 18:46:46,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:46,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:46:46,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 18:46:46,584 INFO L175 Difference]: Start difference. First operand has 461 places, 516 transitions, 8225 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:46:46,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 549 transitions, 9651 flow [2024-06-27 18:46:48,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 549 transitions, 9186 flow, removed 74 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:48,769 INFO L231 Difference]: Finished difference. Result has 465 places, 518 transitions, 8312 flow [2024-06-27 18:46:48,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7760, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8312, PETRI_PLACES=465, PETRI_TRANSITIONS=518} [2024-06-27 18:46:48,770 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 424 predicate places. [2024-06-27 18:46:48,770 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 518 transitions, 8312 flow [2024-06-27 18:46:48,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:48,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:48,770 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:48,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 18:46:48,771 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:48,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:48,771 INFO L85 PathProgramCache]: Analyzing trace with hash 310097052, now seen corresponding path program 34 times [2024-06-27 18:46:48,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:48,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278245865] [2024-06-27 18:46:48,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:48,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:49,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:49,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:49,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278245865] [2024-06-27 18:46:49,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278245865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:49,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:49,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:49,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734915574] [2024-06-27 18:46:49,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:49,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:49,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:49,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:49,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:49,828 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:49,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 518 transitions, 8312 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:49,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:49,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:49,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:51,399 INFO L124 PetriNetUnfolderBase]: 2923/5111 cut-off events. [2024-06-27 18:46:51,399 INFO L125 PetriNetUnfolderBase]: For 236266/236266 co-relation queries the response was YES. [2024-06-27 18:46:51,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36371 conditions, 5111 events. 2923/5111 cut-off events. For 236266/236266 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34346 event pairs, 804 based on Foata normal form. 2/4912 useless extension candidates. Maximal degree in co-relation 36143. Up to 4355 conditions per place. [2024-06-27 18:46:51,466 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 396 selfloop transitions, 140 changer transitions 0/543 dead transitions. [2024-06-27 18:46:51,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 543 transitions, 9646 flow [2024-06-27 18:46:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 154 transitions. [2024-06-27 18:46:51,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41621621621621624 [2024-06-27 18:46:51,467 INFO L175 Difference]: Start difference. First operand has 465 places, 518 transitions, 8312 flow. Second operand 10 states and 154 transitions. [2024-06-27 18:46:51,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 543 transitions, 9646 flow [2024-06-27 18:46:53,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 543 transitions, 9231 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:53,752 INFO L231 Difference]: Finished difference. Result has 467 places, 520 transitions, 8316 flow [2024-06-27 18:46:53,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7897, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8316, PETRI_PLACES=467, PETRI_TRANSITIONS=520} [2024-06-27 18:46:53,753 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 18:46:53,753 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 520 transitions, 8316 flow [2024-06-27 18:46:53,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:53,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:53,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:53,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 18:46:53,754 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:53,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:53,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1671376006, now seen corresponding path program 4 times [2024-06-27 18:46:53,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:53,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384212336] [2024-06-27 18:46:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:53,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:54,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:54,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:54,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384212336] [2024-06-27 18:46:54,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384212336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:54,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:54,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:46:54,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412131900] [2024-06-27 18:46:54,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:54,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:46:54,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:54,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:46:54,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:46:54,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:54,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 520 transitions, 8316 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:54,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:54,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:54,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:56,148 INFO L124 PetriNetUnfolderBase]: 2919/5105 cut-off events. [2024-06-27 18:46:56,148 INFO L125 PetriNetUnfolderBase]: For 207031/207031 co-relation queries the response was YES. [2024-06-27 18:46:56,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35274 conditions, 5105 events. 2919/5105 cut-off events. For 207031/207031 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34280 event pairs, 795 based on Foata normal form. 2/4905 useless extension candidates. Maximal degree in co-relation 35045. Up to 4022 conditions per place. [2024-06-27 18:46:56,209 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 362 selfloop transitions, 173 changer transitions 0/542 dead transitions. [2024-06-27 18:46:56,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 542 transitions, 9512 flow [2024-06-27 18:46:56,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:56,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:46:56,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 18:46:56,211 INFO L175 Difference]: Start difference. First operand has 467 places, 520 transitions, 8316 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:46:56,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 542 transitions, 9512 flow [2024-06-27 18:46:58,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 542 transitions, 9083 flow, removed 76 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:58,220 INFO L231 Difference]: Finished difference. Result has 469 places, 520 transitions, 8243 flow [2024-06-27 18:46:58,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7887, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8243, PETRI_PLACES=469, PETRI_TRANSITIONS=520} [2024-06-27 18:46:58,221 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 18:46:58,221 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 520 transitions, 8243 flow [2024-06-27 18:46:58,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:58,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:58,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:58,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 18:46:58,221 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:58,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash 310091472, now seen corresponding path program 35 times [2024-06-27 18:46:58,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:58,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889086721] [2024-06-27 18:46:58,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:58,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:59,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:59,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:59,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889086721] [2024-06-27 18:46:59,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889086721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:59,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:59,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:59,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725474425] [2024-06-27 18:46:59,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:59,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:59,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:59,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:59,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:59,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:46:59,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 520 transitions, 8243 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:59,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:59,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:46:59,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:00,762 INFO L124 PetriNetUnfolderBase]: 2916/5100 cut-off events. [2024-06-27 18:47:00,762 INFO L125 PetriNetUnfolderBase]: For 189291/189291 co-relation queries the response was YES. [2024-06-27 18:47:00,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34774 conditions, 5100 events. 2916/5100 cut-off events. For 189291/189291 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 34282 event pairs, 799 based on Foata normal form. 2/4904 useless extension candidates. Maximal degree in co-relation 34544. Up to 4264 conditions per place. [2024-06-27 18:47:00,825 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 391 selfloop transitions, 147 changer transitions 0/545 dead transitions. [2024-06-27 18:47:00,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 545 transitions, 9463 flow [2024-06-27 18:47:00,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:00,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:00,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:47:00,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243243243243243 [2024-06-27 18:47:00,827 INFO L175 Difference]: Start difference. First operand has 469 places, 520 transitions, 8243 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:47:00,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 545 transitions, 9463 flow [2024-06-27 18:47:02,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 545 transitions, 8852 flow, removed 52 selfloop flow, removed 12 redundant places. [2024-06-27 18:47:02,801 INFO L231 Difference]: Finished difference. Result has 467 places, 520 transitions, 7931 flow [2024-06-27 18:47:02,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7632, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7931, PETRI_PLACES=467, PETRI_TRANSITIONS=520} [2024-06-27 18:47:02,802 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 18:47:02,802 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 520 transitions, 7931 flow [2024-06-27 18:47:02,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:02,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:02,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:02,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 18:47:02,803 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:02,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash 399124805, now seen corresponding path program 8 times [2024-06-27 18:47:02,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:02,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294993169] [2024-06-27 18:47:02,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:02,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:03,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:03,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294993169] [2024-06-27 18:47:03,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294993169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:03,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:03,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:47:03,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522208574] [2024-06-27 18:47:03,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:03,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:47:03,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:03,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:47:03,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:47:03,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:03,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 520 transitions, 7931 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:03,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:03,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:03,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:05,547 INFO L124 PetriNetUnfolderBase]: 2981/5226 cut-off events. [2024-06-27 18:47:05,547 INFO L125 PetriNetUnfolderBase]: For 244688/244688 co-relation queries the response was YES. [2024-06-27 18:47:05,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34990 conditions, 5226 events. 2981/5226 cut-off events. For 244688/244688 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 35310 event pairs, 819 based on Foata normal form. 12/5036 useless extension candidates. Maximal degree in co-relation 34759. Up to 3992 conditions per place. [2024-06-27 18:47:05,611 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 371 selfloop transitions, 175 changer transitions 0/553 dead transitions. [2024-06-27 18:47:05,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 553 transitions, 9369 flow [2024-06-27 18:47:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:05,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:05,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:47:05,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4348894348894349 [2024-06-27 18:47:05,613 INFO L175 Difference]: Start difference. First operand has 467 places, 520 transitions, 7931 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:47:05,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 553 transitions, 9369 flow [2024-06-27 18:47:07,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 553 transitions, 9007 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:07,633 INFO L231 Difference]: Finished difference. Result has 469 places, 522 transitions, 8076 flow [2024-06-27 18:47:07,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7569, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8076, PETRI_PLACES=469, PETRI_TRANSITIONS=522} [2024-06-27 18:47:07,634 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 428 predicate places. [2024-06-27 18:47:07,634 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 522 transitions, 8076 flow [2024-06-27 18:47:07,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:07,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:07,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:07,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 18:47:07,634 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:07,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:07,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1889763397, now seen corresponding path program 1 times [2024-06-27 18:47:07,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:07,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504682444] [2024-06-27 18:47:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:07,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:08,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:08,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:08,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504682444] [2024-06-27 18:47:08,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504682444] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:08,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:08,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:08,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238390777] [2024-06-27 18:47:08,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:08,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:08,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:08,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:08,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 522 transitions, 8076 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:08,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:08,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:08,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:10,229 INFO L124 PetriNetUnfolderBase]: 2997/5255 cut-off events. [2024-06-27 18:47:10,229 INFO L125 PetriNetUnfolderBase]: For 180877/180877 co-relation queries the response was YES. [2024-06-27 18:47:10,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35340 conditions, 5255 events. 2997/5255 cut-off events. For 180877/180877 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 35718 event pairs, 951 based on Foata normal form. 2/5056 useless extension candidates. Maximal degree in co-relation 35108. Up to 4794 conditions per place. [2024-06-27 18:47:10,293 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 493 selfloop transitions, 63 changer transitions 0/563 dead transitions. [2024-06-27 18:47:10,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 563 transitions, 9516 flow [2024-06-27 18:47:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:10,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-27 18:47:10,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:47:10,294 INFO L175 Difference]: Start difference. First operand has 469 places, 522 transitions, 8076 flow. Second operand 12 states and 185 transitions. [2024-06-27 18:47:10,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 563 transitions, 9516 flow [2024-06-27 18:47:12,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 563 transitions, 9053 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:12,469 INFO L231 Difference]: Finished difference. Result has 472 places, 524 transitions, 7878 flow [2024-06-27 18:47:12,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7613, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7878, PETRI_PLACES=472, PETRI_TRANSITIONS=524} [2024-06-27 18:47:12,470 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-27 18:47:12,470 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 524 transitions, 7878 flow [2024-06-27 18:47:12,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:12,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:12,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:12,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 18:47:12,471 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:12,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:12,471 INFO L85 PathProgramCache]: Analyzing trace with hash 278113037, now seen corresponding path program 2 times [2024-06-27 18:47:12,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:12,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910673532] [2024-06-27 18:47:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:12,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:13,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:13,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:13,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910673532] [2024-06-27 18:47:13,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910673532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:13,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:13,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:13,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731245796] [2024-06-27 18:47:13,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:13,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:13,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:13,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:13,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:13,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:13,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 524 transitions, 7878 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:13,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:13,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:13,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:14,986 INFO L124 PetriNetUnfolderBase]: 3021/5297 cut-off events. [2024-06-27 18:47:14,986 INFO L125 PetriNetUnfolderBase]: For 171643/171643 co-relation queries the response was YES. [2024-06-27 18:47:15,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34797 conditions, 5297 events. 3021/5297 cut-off events. For 171643/171643 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 36006 event pairs, 808 based on Foata normal form. 2/5098 useless extension candidates. Maximal degree in co-relation 34564. Up to 4785 conditions per place. [2024-06-27 18:47:15,053 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 492 selfloop transitions, 69 changer transitions 0/568 dead transitions. [2024-06-27 18:47:15,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 568 transitions, 9474 flow [2024-06-27 18:47:15,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:15,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 185 transitions. [2024-06-27 18:47:15,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 18:47:15,055 INFO L175 Difference]: Start difference. First operand has 472 places, 524 transitions, 7878 flow. Second operand 12 states and 185 transitions. [2024-06-27 18:47:15,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 568 transitions, 9474 flow [2024-06-27 18:47:16,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 568 transitions, 9103 flow, removed 124 selfloop flow, removed 10 redundant places. [2024-06-27 18:47:16,998 INFO L231 Difference]: Finished difference. Result has 474 places, 528 transitions, 7928 flow [2024-06-27 18:47:16,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7633, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7928, PETRI_PLACES=474, PETRI_TRANSITIONS=528} [2024-06-27 18:47:16,999 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 433 predicate places. [2024-06-27 18:47:16,999 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 528 transitions, 7928 flow [2024-06-27 18:47:16,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:16,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:16,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:16,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 18:47:16,999 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:17,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:17,000 INFO L85 PathProgramCache]: Analyzing trace with hash 644875681, now seen corresponding path program 3 times [2024-06-27 18:47:17,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:17,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100339261] [2024-06-27 18:47:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:17,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:17,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:17,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:17,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100339261] [2024-06-27 18:47:17,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100339261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:17,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:17,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:17,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844452417] [2024-06-27 18:47:17,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:17,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:17,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:17,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:17,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:18,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:18,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 528 transitions, 7928 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:18,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:18,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:18,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:19,732 INFO L124 PetriNetUnfolderBase]: 3056/5358 cut-off events. [2024-06-27 18:47:19,732 INFO L125 PetriNetUnfolderBase]: For 189070/189070 co-relation queries the response was YES. [2024-06-27 18:47:19,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35488 conditions, 5358 events. 3056/5358 cut-off events. For 189070/189070 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 36511 event pairs, 978 based on Foata normal form. 2/5160 useless extension candidates. Maximal degree in co-relation 35254. Up to 4685 conditions per place. [2024-06-27 18:47:19,796 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 478 selfloop transitions, 85 changer transitions 0/570 dead transitions. [2024-06-27 18:47:19,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 570 transitions, 9770 flow [2024-06-27 18:47:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:19,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 18:47:19,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-27 18:47:19,798 INFO L175 Difference]: Start difference. First operand has 474 places, 528 transitions, 7928 flow. Second operand 12 states and 190 transitions. [2024-06-27 18:47:19,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 570 transitions, 9770 flow [2024-06-27 18:47:22,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 570 transitions, 9515 flow, removed 62 selfloop flow, removed 10 redundant places. [2024-06-27 18:47:22,164 INFO L231 Difference]: Finished difference. Result has 476 places, 532 transitions, 8125 flow [2024-06-27 18:47:22,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7673, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8125, PETRI_PLACES=476, PETRI_TRANSITIONS=532} [2024-06-27 18:47:22,164 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-27 18:47:22,165 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 532 transitions, 8125 flow [2024-06-27 18:47:22,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:22,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:22,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:22,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 18:47:22,165 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:22,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1896952313, now seen corresponding path program 4 times [2024-06-27 18:47:22,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:22,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746292455] [2024-06-27 18:47:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:22,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:23,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:23,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:23,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746292455] [2024-06-27 18:47:23,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746292455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:23,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:23,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:23,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726375847] [2024-06-27 18:47:23,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:23,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:23,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:23,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:23,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:23,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:23,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 532 transitions, 8125 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:23,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:23,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:23,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:24,894 INFO L124 PetriNetUnfolderBase]: 3072/5387 cut-off events. [2024-06-27 18:47:24,894 INFO L125 PetriNetUnfolderBase]: For 194666/194666 co-relation queries the response was YES. [2024-06-27 18:47:24,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35731 conditions, 5387 events. 3072/5387 cut-off events. For 194666/194666 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 36866 event pairs, 1006 based on Foata normal form. 2/5192 useless extension candidates. Maximal degree in co-relation 35496. Up to 4855 conditions per place. [2024-06-27 18:47:24,962 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 480 selfloop transitions, 83 changer transitions 0/570 dead transitions. [2024-06-27 18:47:24,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 570 transitions, 9825 flow [2024-06-27 18:47:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 18:47:24,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:47:24,964 INFO L175 Difference]: Start difference. First operand has 476 places, 532 transitions, 8125 flow. Second operand 12 states and 186 transitions. [2024-06-27 18:47:24,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 570 transitions, 9825 flow [2024-06-27 18:47:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 570 transitions, 9555 flow, removed 88 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:27,080 INFO L231 Difference]: Finished difference. Result has 480 places, 534 transitions, 8167 flow [2024-06-27 18:47:27,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7877, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8167, PETRI_PLACES=480, PETRI_TRANSITIONS=534} [2024-06-27 18:47:27,081 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 18:47:27,081 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 534 transitions, 8167 flow [2024-06-27 18:47:27,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:27,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:27,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:27,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 18:47:27,081 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:27,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:27,082 INFO L85 PathProgramCache]: Analyzing trace with hash 650706603, now seen corresponding path program 5 times [2024-06-27 18:47:27,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:27,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897753925] [2024-06-27 18:47:27,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:27,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:27,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:27,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897753925] [2024-06-27 18:47:27,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897753925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:27,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:27,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:27,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345296259] [2024-06-27 18:47:27,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:27,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:27,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:27,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:27,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:28,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:28,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 534 transitions, 8167 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:28,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:28,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:28,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:29,676 INFO L124 PetriNetUnfolderBase]: 3088/5417 cut-off events. [2024-06-27 18:47:29,677 INFO L125 PetriNetUnfolderBase]: For 194054/194054 co-relation queries the response was YES. [2024-06-27 18:47:29,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35851 conditions, 5417 events. 3088/5417 cut-off events. For 194054/194054 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 37030 event pairs, 1036 based on Foata normal form. 2/5221 useless extension candidates. Maximal degree in co-relation 35614. Up to 4983 conditions per place. [2024-06-27 18:47:29,742 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 480 selfloop transitions, 83 changer transitions 0/570 dead transitions. [2024-06-27 18:47:29,743 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 570 transitions, 9839 flow [2024-06-27 18:47:29,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:29,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-27 18:47:29,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4099099099099099 [2024-06-27 18:47:29,744 INFO L175 Difference]: Start difference. First operand has 480 places, 534 transitions, 8167 flow. Second operand 12 states and 182 transitions. [2024-06-27 18:47:29,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 570 transitions, 9839 flow [2024-06-27 18:47:31,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 570 transitions, 9551 flow, removed 55 selfloop flow, removed 10 redundant places. [2024-06-27 18:47:31,917 INFO L231 Difference]: Finished difference. Result has 482 places, 536 transitions, 8173 flow [2024-06-27 18:47:31,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7883, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8173, PETRI_PLACES=482, PETRI_TRANSITIONS=536} [2024-06-27 18:47:31,918 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-27 18:47:31,918 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 536 transitions, 8173 flow [2024-06-27 18:47:31,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:31,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:31,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:31,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 18:47:31,918 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:31,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:31,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1896772823, now seen corresponding path program 6 times [2024-06-27 18:47:31,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:31,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020756273] [2024-06-27 18:47:31,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:31,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:32,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:32,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:32,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020756273] [2024-06-27 18:47:32,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020756273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:32,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:32,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:32,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619989192] [2024-06-27 18:47:32,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:32,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:32,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:32,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:32,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:32,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:32,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 536 transitions, 8173 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:32,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:32,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:32,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:34,524 INFO L124 PetriNetUnfolderBase]: 3085/5413 cut-off events. [2024-06-27 18:47:34,524 INFO L125 PetriNetUnfolderBase]: For 177839/177839 co-relation queries the response was YES. [2024-06-27 18:47:34,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35377 conditions, 5413 events. 3085/5413 cut-off events. For 177839/177839 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 37015 event pairs, 1051 based on Foata normal form. 2/5216 useless extension candidates. Maximal degree in co-relation 35139. Up to 5053 conditions per place. [2024-06-27 18:47:34,604 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 477 selfloop transitions, 83 changer transitions 0/567 dead transitions. [2024-06-27 18:47:34,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 567 transitions, 9455 flow [2024-06-27 18:47:34,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:34,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 177 transitions. [2024-06-27 18:47:34,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39864864864864863 [2024-06-27 18:47:34,606 INFO L175 Difference]: Start difference. First operand has 482 places, 536 transitions, 8173 flow. Second operand 12 states and 177 transitions. [2024-06-27 18:47:34,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 567 transitions, 9455 flow [2024-06-27 18:47:37,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 567 transitions, 9067 flow, removed 108 selfloop flow, removed 10 redundant places. [2024-06-27 18:47:37,399 INFO L231 Difference]: Finished difference. Result has 484 places, 536 transitions, 7959 flow [2024-06-27 18:47:37,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7785, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7959, PETRI_PLACES=484, PETRI_TRANSITIONS=536} [2024-06-27 18:47:37,399 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 18:47:37,399 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 536 transitions, 7959 flow [2024-06-27 18:47:37,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:37,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:37,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:37,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 18:47:37,400 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:37,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1473750277, now seen corresponding path program 7 times [2024-06-27 18:47:37,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:37,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738750241] [2024-06-27 18:47:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:37,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:38,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:38,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738750241] [2024-06-27 18:47:38,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738750241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:38,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:38,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230128432] [2024-06-27 18:47:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:38,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:38,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:38,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:38,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 536 transitions, 7959 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:38,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:38,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:38,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:40,028 INFO L124 PetriNetUnfolderBase]: 3120/5467 cut-off events. [2024-06-27 18:47:40,029 INFO L125 PetriNetUnfolderBase]: For 176985/176985 co-relation queries the response was YES. [2024-06-27 18:47:40,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35453 conditions, 5467 events. 3120/5467 cut-off events. For 176985/176985 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 37421 event pairs, 921 based on Foata normal form. 2/5266 useless extension candidates. Maximal degree in co-relation 35214. Up to 4992 conditions per place. [2024-06-27 18:47:40,102 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 507 selfloop transitions, 65 changer transitions 0/579 dead transitions. [2024-06-27 18:47:40,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 579 transitions, 9455 flow [2024-06-27 18:47:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:40,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:40,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 18:47:40,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:47:40,103 INFO L175 Difference]: Start difference. First operand has 484 places, 536 transitions, 7959 flow. Second operand 12 states and 186 transitions. [2024-06-27 18:47:40,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 579 transitions, 9455 flow [2024-06-27 18:47:42,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 579 transitions, 9275 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:47:42,529 INFO L231 Difference]: Finished difference. Result has 485 places, 542 transitions, 8096 flow [2024-06-27 18:47:42,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7779, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8096, PETRI_PLACES=485, PETRI_TRANSITIONS=542} [2024-06-27 18:47:42,530 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 444 predicate places. [2024-06-27 18:47:42,530 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 542 transitions, 8096 flow [2024-06-27 18:47:42,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:42,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:42,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:42,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 18:47:42,531 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:42,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash -992645439, now seen corresponding path program 8 times [2024-06-27 18:47:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:42,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673260692] [2024-06-27 18:47:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:42,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:43,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:43,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:43,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673260692] [2024-06-27 18:47:43,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673260692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:43,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:43,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:43,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676100876] [2024-06-27 18:47:43,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:43,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:43,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:43,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:43,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:43,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:43,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 542 transitions, 8096 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:43,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:43,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:43,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:45,282 INFO L124 PetriNetUnfolderBase]: 3195/5602 cut-off events. [2024-06-27 18:47:45,283 INFO L125 PetriNetUnfolderBase]: For 204642/204642 co-relation queries the response was YES. [2024-06-27 18:47:45,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36859 conditions, 5602 events. 3195/5602 cut-off events. For 204642/204642 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 38652 event pairs, 1002 based on Foata normal form. 2/5406 useless extension candidates. Maximal degree in co-relation 36619. Up to 4898 conditions per place. [2024-06-27 18:47:45,362 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 492 selfloop transitions, 91 changer transitions 0/590 dead transitions. [2024-06-27 18:47:45,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 590 transitions, 10032 flow [2024-06-27 18:47:45,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:45,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 18:47:45,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-27 18:47:45,364 INFO L175 Difference]: Start difference. First operand has 485 places, 542 transitions, 8096 flow. Second operand 12 states and 191 transitions. [2024-06-27 18:47:45,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 590 transitions, 10032 flow [2024-06-27 18:47:48,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 590 transitions, 9783 flow, removed 64 selfloop flow, removed 10 redundant places. [2024-06-27 18:47:48,064 INFO L231 Difference]: Finished difference. Result has 488 places, 554 transitions, 8425 flow [2024-06-27 18:47:48,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7847, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8425, PETRI_PLACES=488, PETRI_TRANSITIONS=554} [2024-06-27 18:47:48,064 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-27 18:47:48,064 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 554 transitions, 8425 flow [2024-06-27 18:47:48,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:48,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:48,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:48,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 18:47:48,065 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:48,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:48,065 INFO L85 PathProgramCache]: Analyzing trace with hash -587371943, now seen corresponding path program 9 times [2024-06-27 18:47:48,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:48,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618375544] [2024-06-27 18:47:48,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:48,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:48,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:49,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:49,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618375544] [2024-06-27 18:47:49,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618375544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:49,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:49,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:49,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096074113] [2024-06-27 18:47:49,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:49,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:49,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:49,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:49,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:49,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:49,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 554 transitions, 8425 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:49,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:49,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:49,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:51,006 INFO L124 PetriNetUnfolderBase]: 3230/5664 cut-off events. [2024-06-27 18:47:51,006 INFO L125 PetriNetUnfolderBase]: For 230722/230722 co-relation queries the response was YES. [2024-06-27 18:47:51,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38013 conditions, 5664 events. 3230/5664 cut-off events. For 230722/230722 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 39139 event pairs, 1037 based on Foata normal form. 2/5464 useless extension candidates. Maximal degree in co-relation 37771. Up to 5217 conditions per place. [2024-06-27 18:47:51,088 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 498 selfloop transitions, 85 changer transitions 0/590 dead transitions. [2024-06-27 18:47:51,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 590 transitions, 10311 flow [2024-06-27 18:47:51,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:51,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-27 18:47:51,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2024-06-27 18:47:51,089 INFO L175 Difference]: Start difference. First operand has 488 places, 554 transitions, 8425 flow. Second operand 12 states and 183 transitions. [2024-06-27 18:47:51,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 590 transitions, 10311 flow [2024-06-27 18:47:54,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 590 transitions, 10019 flow, removed 101 selfloop flow, removed 8 redundant places. [2024-06-27 18:47:54,330 INFO L231 Difference]: Finished difference. Result has 492 places, 558 transitions, 8615 flow [2024-06-27 18:47:54,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8177, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8615, PETRI_PLACES=492, PETRI_TRANSITIONS=558} [2024-06-27 18:47:54,330 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-27 18:47:54,330 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 558 transitions, 8615 flow [2024-06-27 18:47:54,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:54,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:54,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 18:47:54,331 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:54,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:54,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1978554529, now seen corresponding path program 10 times [2024-06-27 18:47:54,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:54,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517232816] [2024-06-27 18:47:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:55,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:55,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517232816] [2024-06-27 18:47:55,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517232816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:55,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:55,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:55,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494240799] [2024-06-27 18:47:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:55,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:55,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:55,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:55,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:55,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:47:55,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 558 transitions, 8615 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:55,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:55,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:47:55,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:57,173 INFO L124 PetriNetUnfolderBase]: 3227/5659 cut-off events. [2024-06-27 18:47:57,174 INFO L125 PetriNetUnfolderBase]: For 208828/208828 co-relation queries the response was YES. [2024-06-27 18:47:57,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37480 conditions, 5659 events. 3227/5659 cut-off events. For 208828/208828 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 39073 event pairs, 1054 based on Foata normal form. 2/5457 useless extension candidates. Maximal degree in co-relation 37236. Up to 5295 conditions per place. [2024-06-27 18:47:57,259 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 497 selfloop transitions, 83 changer transitions 0/587 dead transitions. [2024-06-27 18:47:57,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 587 transitions, 9925 flow [2024-06-27 18:47:57,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:47:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:47:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 178 transitions. [2024-06-27 18:47:57,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009009009009009 [2024-06-27 18:47:57,261 INFO L175 Difference]: Start difference. First operand has 492 places, 558 transitions, 8615 flow. Second operand 12 states and 178 transitions. [2024-06-27 18:47:57,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 587 transitions, 9925 flow [2024-06-27 18:48:00,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 587 transitions, 9615 flow, removed 112 selfloop flow, removed 7 redundant places. [2024-06-27 18:48:00,186 INFO L231 Difference]: Finished difference. Result has 497 places, 558 transitions, 8481 flow [2024-06-27 18:48:00,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8305, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8481, PETRI_PLACES=497, PETRI_TRANSITIONS=558} [2024-06-27 18:48:00,187 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 18:48:00,187 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 558 transitions, 8481 flow [2024-06-27 18:48:00,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:00,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:00,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 18:48:00,187 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:00,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -587544923, now seen corresponding path program 11 times [2024-06-27 18:48:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:00,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004678099] [2024-06-27 18:48:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:01,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:01,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:01,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004678099] [2024-06-27 18:48:01,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004678099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:01,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:01,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:01,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671921963] [2024-06-27 18:48:01,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:01,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:01,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:01,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:01,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:01,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:01,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 558 transitions, 8481 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:01,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:01,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:01,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:03,051 INFO L124 PetriNetUnfolderBase]: 3224/5654 cut-off events. [2024-06-27 18:48:03,052 INFO L125 PetriNetUnfolderBase]: For 187493/187493 co-relation queries the response was YES. [2024-06-27 18:48:03,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36962 conditions, 5654 events. 3224/5654 cut-off events. For 187493/187493 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 39058 event pairs, 1017 based on Foata normal form. 2/5456 useless extension candidates. Maximal degree in co-relation 36716. Up to 5088 conditions per place. [2024-06-27 18:48:03,136 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 495 selfloop transitions, 89 changer transitions 0/591 dead transitions. [2024-06-27 18:48:03,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 591 transitions, 9823 flow [2024-06-27 18:48:03,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:03,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:03,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 18:48:03,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:48:03,137 INFO L175 Difference]: Start difference. First operand has 497 places, 558 transitions, 8481 flow. Second operand 12 states and 186 transitions. [2024-06-27 18:48:03,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 591 transitions, 9823 flow [2024-06-27 18:48:05,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 591 transitions, 9527 flow, removed 52 selfloop flow, removed 12 redundant places. [2024-06-27 18:48:05,838 INFO L231 Difference]: Finished difference. Result has 497 places, 558 transitions, 8371 flow [2024-06-27 18:48:05,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8185, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8371, PETRI_PLACES=497, PETRI_TRANSITIONS=558} [2024-06-27 18:48:05,839 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 18:48:05,839 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 558 transitions, 8371 flow [2024-06-27 18:48:05,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:05,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:05,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:05,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 18:48:05,840 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:05,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:05,840 INFO L85 PathProgramCache]: Analyzing trace with hash -685002745, now seen corresponding path program 12 times [2024-06-27 18:48:05,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:05,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489389298] [2024-06-27 18:48:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:05,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:06,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:06,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489389298] [2024-06-27 18:48:06,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489389298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:06,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:06,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:06,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529991207] [2024-06-27 18:48:06,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:06,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:06,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:06,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:06,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:06,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:06,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 558 transitions, 8371 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:06,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:06,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:06,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:08,635 INFO L124 PetriNetUnfolderBase]: 3240/5683 cut-off events. [2024-06-27 18:48:08,635 INFO L125 PetriNetUnfolderBase]: For 191146/191146 co-relation queries the response was YES. [2024-06-27 18:48:08,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37224 conditions, 5683 events. 3240/5683 cut-off events. For 191146/191146 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 39292 event pairs, 1036 based on Foata normal form. 2/5480 useless extension candidates. Maximal degree in co-relation 36977. Up to 5045 conditions per place. [2024-06-27 18:48:08,722 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 466 selfloop transitions, 117 changer transitions 0/590 dead transitions. [2024-06-27 18:48:08,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 590 transitions, 9847 flow [2024-06-27 18:48:08,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:08,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 184 transitions. [2024-06-27 18:48:08,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144144144144144 [2024-06-27 18:48:08,724 INFO L175 Difference]: Start difference. First operand has 497 places, 558 transitions, 8371 flow. Second operand 12 states and 184 transitions. [2024-06-27 18:48:08,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 590 transitions, 9847 flow [2024-06-27 18:48:11,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 590 transitions, 9569 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-27 18:48:11,007 INFO L231 Difference]: Finished difference. Result has 497 places, 560 transitions, 8484 flow [2024-06-27 18:48:11,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8093, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8484, PETRI_PLACES=497, PETRI_TRANSITIONS=560} [2024-06-27 18:48:11,008 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 18:48:11,008 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 560 transitions, 8484 flow [2024-06-27 18:48:11,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:11,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:11,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:11,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 18:48:11,008 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:11,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash -685009255, now seen corresponding path program 13 times [2024-06-27 18:48:11,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:11,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361223976] [2024-06-27 18:48:11,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:11,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:11,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:11,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:11,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361223976] [2024-06-27 18:48:11,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361223976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:11,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:11,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:11,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677576581] [2024-06-27 18:48:11,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:11,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:11,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:11,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:11,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:12,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:12,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 560 transitions, 8484 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:12,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:12,037 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:12,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:13,866 INFO L124 PetriNetUnfolderBase]: 3356/5899 cut-off events. [2024-06-27 18:48:13,866 INFO L125 PetriNetUnfolderBase]: For 323404/323404 co-relation queries the response was YES. [2024-06-27 18:48:13,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40799 conditions, 5899 events. 3356/5899 cut-off events. For 323404/323404 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 41225 event pairs, 1071 based on Foata normal form. 2/5696 useless extension candidates. Maximal degree in co-relation 40552. Up to 5039 conditions per place. [2024-06-27 18:48:13,960 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 472 selfloop transitions, 122 changer transitions 0/601 dead transitions. [2024-06-27 18:48:13,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 601 transitions, 10460 flow [2024-06-27 18:48:13,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:13,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:13,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 18:48:13,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:48:13,962 INFO L175 Difference]: Start difference. First operand has 497 places, 560 transitions, 8484 flow. Second operand 12 states and 192 transitions. [2024-06-27 18:48:13,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 601 transitions, 10460 flow [2024-06-27 18:48:17,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 601 transitions, 10085 flow, removed 72 selfloop flow, removed 10 redundant places. [2024-06-27 18:48:17,400 INFO L231 Difference]: Finished difference. Result has 499 places, 564 transitions, 8666 flow [2024-06-27 18:48:17,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8109, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=560, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8666, PETRI_PLACES=499, PETRI_TRANSITIONS=564} [2024-06-27 18:48:17,401 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-27 18:48:17,401 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 564 transitions, 8666 flow [2024-06-27 18:48:17,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:17,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:17,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:17,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 18:48:17,401 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:17,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:17,402 INFO L85 PathProgramCache]: Analyzing trace with hash -676728535, now seen corresponding path program 14 times [2024-06-27 18:48:17,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:17,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255726414] [2024-06-27 18:48:17,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:17,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255726414] [2024-06-27 18:48:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255726414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:18,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:18,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:18,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102393830] [2024-06-27 18:48:18,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:18,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:18,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:18,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:18,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:18,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:18,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 564 transitions, 8666 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:18,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:18,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:18,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:20,212 INFO L124 PetriNetUnfolderBase]: 3340/5871 cut-off events. [2024-06-27 18:48:20,212 INFO L125 PetriNetUnfolderBase]: For 307018/307018 co-relation queries the response was YES. [2024-06-27 18:48:20,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38898 conditions, 5871 events. 3340/5871 cut-off events. For 307018/307018 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 41005 event pairs, 1068 based on Foata normal form. 12/5676 useless extension candidates. Maximal degree in co-relation 38650. Up to 5099 conditions per place. [2024-06-27 18:48:20,300 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 463 selfloop transitions, 128 changer transitions 0/598 dead transitions. [2024-06-27 18:48:20,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 598 transitions, 10054 flow [2024-06-27 18:48:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:20,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-27 18:48:20,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-27 18:48:20,302 INFO L175 Difference]: Start difference. First operand has 499 places, 564 transitions, 8666 flow. Second operand 12 states and 187 transitions. [2024-06-27 18:48:20,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 598 transitions, 10054 flow [2024-06-27 18:48:23,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 598 transitions, 9625 flow, removed 132 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:23,739 INFO L231 Difference]: Finished difference. Result has 503 places, 564 transitions, 8500 flow [2024-06-27 18:48:23,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8237, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8500, PETRI_PLACES=503, PETRI_TRANSITIONS=564} [2024-06-27 18:48:23,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-27 18:48:23,739 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 564 transitions, 8500 flow [2024-06-27 18:48:23,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:23,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:23,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:23,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 18:48:23,740 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:23,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:23,741 INFO L85 PathProgramCache]: Analyzing trace with hash -676421077, now seen corresponding path program 1 times [2024-06-27 18:48:23,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:23,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105115821] [2024-06-27 18:48:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:23,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:23,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:24,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:24,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:24,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105115821] [2024-06-27 18:48:24,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105115821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:24,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:24,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:48:24,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609914380] [2024-06-27 18:48:24,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:24,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:48:24,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:24,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:48:24,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:48:24,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:24,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 564 transitions, 8500 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:24,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:24,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:24,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:26,673 INFO L124 PetriNetUnfolderBase]: 3522/6222 cut-off events. [2024-06-27 18:48:26,674 INFO L125 PetriNetUnfolderBase]: For 352524/352524 co-relation queries the response was YES. [2024-06-27 18:48:26,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41982 conditions, 6222 events. 3522/6222 cut-off events. For 352524/352524 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 44105 event pairs, 1133 based on Foata normal form. 8/6028 useless extension candidates. Maximal degree in co-relation 41732. Up to 4945 conditions per place. [2024-06-27 18:48:26,752 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 468 selfloop transitions, 133 changer transitions 0/608 dead transitions. [2024-06-27 18:48:26,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 608 transitions, 10532 flow [2024-06-27 18:48:26,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:26,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:26,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 18:48:26,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:48:26,754 INFO L175 Difference]: Start difference. First operand has 503 places, 564 transitions, 8500 flow. Second operand 12 states and 192 transitions. [2024-06-27 18:48:26,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 608 transitions, 10532 flow [2024-06-27 18:48:30,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 608 transitions, 10262 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 18:48:30,202 INFO L231 Difference]: Finished difference. Result has 505 places, 567 transitions, 8794 flow [2024-06-27 18:48:30,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8230, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8794, PETRI_PLACES=505, PETRI_TRANSITIONS=567} [2024-06-27 18:48:30,203 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 464 predicate places. [2024-06-27 18:48:30,203 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 567 transitions, 8794 flow [2024-06-27 18:48:30,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:30,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:30,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:30,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 18:48:30,204 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:30,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:30,204 INFO L85 PathProgramCache]: Analyzing trace with hash -912903895, now seen corresponding path program 15 times [2024-06-27 18:48:30,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:30,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582335136] [2024-06-27 18:48:30,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:30,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:31,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:31,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:31,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582335136] [2024-06-27 18:48:31,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582335136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:31,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:31,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:31,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402949671] [2024-06-27 18:48:31,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:31,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:31,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:31,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:31,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:31,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 567 transitions, 8794 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:31,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:31,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:31,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:33,271 INFO L124 PetriNetUnfolderBase]: 3538/6251 cut-off events. [2024-06-27 18:48:33,271 INFO L125 PetriNetUnfolderBase]: For 310562/310562 co-relation queries the response was YES. [2024-06-27 18:48:33,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42476 conditions, 6251 events. 3538/6251 cut-off events. For 310562/310562 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44456 event pairs, 1193 based on Foata normal form. 2/6043 useless extension candidates. Maximal degree in co-relation 42224. Up to 5670 conditions per place. [2024-06-27 18:48:33,363 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 483 selfloop transitions, 109 changer transitions 0/599 dead transitions. [2024-06-27 18:48:33,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 599 transitions, 10299 flow [2024-06-27 18:48:33,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:33,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:33,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 183 transitions. [2024-06-27 18:48:33,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41216216216216217 [2024-06-27 18:48:33,365 INFO L175 Difference]: Start difference. First operand has 505 places, 567 transitions, 8794 flow. Second operand 12 states and 183 transitions. [2024-06-27 18:48:33,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 599 transitions, 10299 flow [2024-06-27 18:48:37,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 599 transitions, 9994 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-27 18:48:37,089 INFO L231 Difference]: Finished difference. Result has 509 places, 569 transitions, 8875 flow [2024-06-27 18:48:37,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8503, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8875, PETRI_PLACES=509, PETRI_TRANSITIONS=569} [2024-06-27 18:48:37,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-27 18:48:37,090 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 569 transitions, 8875 flow [2024-06-27 18:48:37,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:37,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:37,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:37,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 18:48:37,091 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:37,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1498675207, now seen corresponding path program 16 times [2024-06-27 18:48:37,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:37,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756628328] [2024-06-27 18:48:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:37,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:37,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756628328] [2024-06-27 18:48:37,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756628328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:37,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:37,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:37,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150760588] [2024-06-27 18:48:37,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:37,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:37,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:37,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:37,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:38,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:38,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 569 transitions, 8875 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:38,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:38,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:38,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:40,096 INFO L124 PetriNetUnfolderBase]: 3535/6246 cut-off events. [2024-06-27 18:48:40,096 INFO L125 PetriNetUnfolderBase]: For 280507/280507 co-relation queries the response was YES. [2024-06-27 18:48:40,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41958 conditions, 6246 events. 3535/6246 cut-off events. For 280507/280507 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44388 event pairs, 1211 based on Foata normal form. 2/6038 useless extension candidates. Maximal degree in co-relation 41704. Up to 5598 conditions per place. [2024-06-27 18:48:40,198 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 496 selfloop transitions, 98 changer transitions 0/601 dead transitions. [2024-06-27 18:48:40,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 601 transitions, 10374 flow [2024-06-27 18:48:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:40,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 186 transitions. [2024-06-27 18:48:40,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189189189189189 [2024-06-27 18:48:40,199 INFO L175 Difference]: Start difference. First operand has 509 places, 569 transitions, 8875 flow. Second operand 12 states and 186 transitions. [2024-06-27 18:48:40,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 601 transitions, 10374 flow [2024-06-27 18:48:44,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 601 transitions, 10031 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-27 18:48:44,120 INFO L231 Difference]: Finished difference. Result has 512 places, 571 transitions, 8886 flow [2024-06-27 18:48:44,120 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8532, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=569, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8886, PETRI_PLACES=512, PETRI_TRANSITIONS=571} [2024-06-27 18:48:44,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 471 predicate places. [2024-06-27 18:48:44,121 INFO L495 AbstractCegarLoop]: Abstraction has has 512 places, 571 transitions, 8886 flow [2024-06-27 18:48:44,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:44,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:44,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:44,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 18:48:44,121 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:44,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1313542271, now seen corresponding path program 17 times [2024-06-27 18:48:44,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:44,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690686645] [2024-06-27 18:48:44,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:44,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:45,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:45,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:45,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690686645] [2024-06-27 18:48:45,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690686645] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:45,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:45,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:45,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686382935] [2024-06-27 18:48:45,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:45,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:45,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:45,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:45,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:45,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:45,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 571 transitions, 8886 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:45,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:45,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:45,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:47,065 INFO L124 PetriNetUnfolderBase]: 3551/6274 cut-off events. [2024-06-27 18:48:47,065 INFO L125 PetriNetUnfolderBase]: For 284722/284722 co-relation queries the response was YES. [2024-06-27 18:48:47,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42124 conditions, 6274 events. 3551/6274 cut-off events. For 284722/284722 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 44646 event pairs, 1192 based on Foata normal form. 2/6067 useless extension candidates. Maximal degree in co-relation 41869. Up to 5649 conditions per place. [2024-06-27 18:48:47,168 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 486 selfloop transitions, 112 changer transitions 0/605 dead transitions. [2024-06-27 18:48:47,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 605 transitions, 10418 flow [2024-06-27 18:48:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 187 transitions. [2024-06-27 18:48:47,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42117117117117114 [2024-06-27 18:48:47,170 INFO L175 Difference]: Start difference. First operand has 512 places, 571 transitions, 8886 flow. Second operand 12 states and 187 transitions. [2024-06-27 18:48:47,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 605 transitions, 10418 flow [2024-06-27 18:48:51,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 605 transitions, 10083 flow, removed 71 selfloop flow, removed 10 redundant places. [2024-06-27 18:48:51,274 INFO L231 Difference]: Finished difference. Result has 514 places, 573 transitions, 8946 flow [2024-06-27 18:48:51,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8551, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8946, PETRI_PLACES=514, PETRI_TRANSITIONS=573} [2024-06-27 18:48:51,275 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 473 predicate places. [2024-06-27 18:48:51,275 INFO L495 AbstractCegarLoop]: Abstraction has has 514 places, 573 transitions, 8946 flow [2024-06-27 18:48:51,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:51,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:51,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:51,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 18:48:51,276 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:51,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1313715251, now seen corresponding path program 18 times [2024-06-27 18:48:51,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:51,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469420407] [2024-06-27 18:48:51,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:51,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:52,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:52,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:52,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469420407] [2024-06-27 18:48:52,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469420407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:52,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:52,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:52,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889261033] [2024-06-27 18:48:52,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:52,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:52,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:52,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:52,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:52,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 573 transitions, 8946 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:52,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:52,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:52,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:48:54,646 INFO L124 PetriNetUnfolderBase]: 3567/6302 cut-off events. [2024-06-27 18:48:54,647 INFO L125 PetriNetUnfolderBase]: For 290079/290079 co-relation queries the response was YES. [2024-06-27 18:48:54,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42355 conditions, 6302 events. 3567/6302 cut-off events. For 290079/290079 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 44881 event pairs, 1198 based on Foata normal form. 2/6099 useless extension candidates. Maximal degree in co-relation 42099. Up to 5527 conditions per place. [2024-06-27 18:48:54,737 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 480 selfloop transitions, 123 changer transitions 0/610 dead transitions. [2024-06-27 18:48:54,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 610 transitions, 10536 flow [2024-06-27 18:48:54,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:48:54,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:48:54,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-27 18:48:54,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42567567567567566 [2024-06-27 18:48:54,739 INFO L175 Difference]: Start difference. First operand has 514 places, 573 transitions, 8946 flow. Second operand 12 states and 189 transitions. [2024-06-27 18:48:54,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 610 transitions, 10536 flow [2024-06-27 18:48:58,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 610 transitions, 10157 flow, removed 79 selfloop flow, removed 10 redundant places. [2024-06-27 18:48:58,529 INFO L231 Difference]: Finished difference. Result has 517 places, 576 transitions, 9042 flow [2024-06-27 18:48:58,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8567, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9042, PETRI_PLACES=517, PETRI_TRANSITIONS=576} [2024-06-27 18:48:58,529 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 476 predicate places. [2024-06-27 18:48:58,529 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 576 transitions, 9042 flow [2024-06-27 18:48:58,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:58,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:48:58,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:48:58,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-27 18:48:58,530 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:48:58,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:48:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1498668697, now seen corresponding path program 19 times [2024-06-27 18:48:58,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:48:58,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185388213] [2024-06-27 18:48:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:48:58,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:48:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:48:59,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:48:59,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:48:59,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185388213] [2024-06-27 18:48:59,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185388213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:48:59,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:48:59,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:48:59,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918305221] [2024-06-27 18:48:59,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:48:59,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:48:59,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:48:59,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:48:59,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:48:59,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:48:59,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 576 transitions, 9042 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:48:59,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:48:59,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:48:59,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:01,949 INFO L124 PetriNetUnfolderBase]: 3583/6330 cut-off events. [2024-06-27 18:49:01,949 INFO L125 PetriNetUnfolderBase]: For 295667/295667 co-relation queries the response was YES. [2024-06-27 18:49:02,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42707 conditions, 6330 events. 3583/6330 cut-off events. For 295667/295667 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 45087 event pairs, 1231 based on Foata normal form. 2/6123 useless extension candidates. Maximal degree in co-relation 42449. Up to 5638 conditions per place. [2024-06-27 18:49:02,055 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 502 selfloop transitions, 101 changer transitions 0/610 dead transitions. [2024-06-27 18:49:02,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 610 transitions, 10592 flow [2024-06-27 18:49:02,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:49:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:49:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 18:49:02,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-27 18:49:02,057 INFO L175 Difference]: Start difference. First operand has 517 places, 576 transitions, 9042 flow. Second operand 12 states and 190 transitions. [2024-06-27 18:49:02,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 610 transitions, 10592 flow [2024-06-27 18:49:06,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 610 transitions, 10183 flow, removed 93 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:06,160 INFO L231 Difference]: Finished difference. Result has 520 places, 578 transitions, 9014 flow [2024-06-27 18:49:06,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8633, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9014, PETRI_PLACES=520, PETRI_TRANSITIONS=578} [2024-06-27 18:49:06,161 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 479 predicate places. [2024-06-27 18:49:06,161 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 578 transitions, 9014 flow [2024-06-27 18:49:06,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:06,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:06,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:06,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-27 18:49:06,162 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:06,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:06,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1498495717, now seen corresponding path program 20 times [2024-06-27 18:49:06,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:06,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065050123] [2024-06-27 18:49:06,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:06,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:06,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:07,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:07,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065050123] [2024-06-27 18:49:07,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065050123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:07,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:07,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:07,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538468718] [2024-06-27 18:49:07,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:07,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:07,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:07,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:07,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:49:07,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 578 transitions, 9014 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:07,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:07,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:49:07,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:09,267 INFO L124 PetriNetUnfolderBase]: 3599/6358 cut-off events. [2024-06-27 18:49:09,267 INFO L125 PetriNetUnfolderBase]: For 300630/300630 co-relation queries the response was YES. [2024-06-27 18:49:09,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42804 conditions, 6358 events. 3599/6358 cut-off events. For 300630/300630 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 45368 event pairs, 1231 based on Foata normal form. 2/6152 useless extension candidates. Maximal degree in co-relation 42545. Up to 5596 conditions per place. [2024-06-27 18:49:09,370 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 502 selfloop transitions, 105 changer transitions 0/614 dead transitions. [2024-06-27 18:49:09,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 614 transitions, 10588 flow [2024-06-27 18:49:09,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:49:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:49:09,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-27 18:49:09,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-06-27 18:49:09,372 INFO L175 Difference]: Start difference. First operand has 520 places, 578 transitions, 9014 flow. Second operand 12 states and 194 transitions. [2024-06-27 18:49:09,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 614 transitions, 10588 flow [2024-06-27 18:49:13,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 614 transitions, 10223 flow, removed 83 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:13,355 INFO L231 Difference]: Finished difference. Result has 522 places, 580 transitions, 9042 flow [2024-06-27 18:49:13,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8649, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9042, PETRI_PLACES=522, PETRI_TRANSITIONS=580} [2024-06-27 18:49:13,356 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 481 predicate places. [2024-06-27 18:49:13,356 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 580 transitions, 9042 flow [2024-06-27 18:49:13,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:13,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:13,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:13,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-27 18:49:13,357 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:13,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1494027067, now seen corresponding path program 21 times [2024-06-27 18:49:13,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558400442] [2024-06-27 18:49:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:14,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:14,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558400442] [2024-06-27 18:49:14,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558400442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:14,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:14,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:14,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037564985] [2024-06-27 18:49:14,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:14,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:14,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:14,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:14,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:14,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:49:14,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 580 transitions, 9042 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:14,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:14,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:49:14,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:16,430 INFO L124 PetriNetUnfolderBase]: 3615/6386 cut-off events. [2024-06-27 18:49:16,430 INFO L125 PetriNetUnfolderBase]: For 305728/305728 co-relation queries the response was YES. [2024-06-27 18:49:16,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43013 conditions, 6386 events. 3615/6386 cut-off events. For 305728/305728 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 45590 event pairs, 1240 based on Foata normal form. 2/6188 useless extension candidates. Maximal degree in co-relation 42753. Up to 5186 conditions per place. [2024-06-27 18:49:16,535 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 488 selfloop transitions, 127 changer transitions 0/622 dead transitions. [2024-06-27 18:49:16,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 622 transitions, 10692 flow [2024-06-27 18:49:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:49:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:49:16,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 18:49:16,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-27 18:49:16,537 INFO L175 Difference]: Start difference. First operand has 522 places, 580 transitions, 9042 flow. Second operand 12 states and 199 transitions. [2024-06-27 18:49:16,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 622 transitions, 10692 flow [2024-06-27 18:49:20,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 622 transitions, 10315 flow, removed 85 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:20,554 INFO L231 Difference]: Finished difference. Result has 524 places, 582 transitions, 9106 flow [2024-06-27 18:49:20,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8665, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9106, PETRI_PLACES=524, PETRI_TRANSITIONS=582} [2024-06-27 18:49:20,554 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 483 predicate places. [2024-06-27 18:49:20,554 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 582 transitions, 9106 flow [2024-06-27 18:49:20,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:20,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:20,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:20,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-27 18:49:20,555 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:20,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:20,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1945217157, now seen corresponding path program 22 times [2024-06-27 18:49:20,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479608920] [2024-06-27 18:49:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:21,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:21,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479608920] [2024-06-27 18:49:21,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479608920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:21,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:21,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009749981] [2024-06-27 18:49:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:21,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:21,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:21,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:21,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:49:21,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 582 transitions, 9106 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:21,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:21,507 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:49:21,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:23,539 INFO L124 PetriNetUnfolderBase]: 3631/6416 cut-off events. [2024-06-27 18:49:23,540 INFO L125 PetriNetUnfolderBase]: For 310752/310752 co-relation queries the response was YES. [2024-06-27 18:49:23,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43330 conditions, 6416 events. 3631/6416 cut-off events. For 310752/310752 co-relation queries the response was YES. Maximal size of possible extension queue 432. Compared 45909 event pairs, 1100 based on Foata normal form. 2/6210 useless extension candidates. Maximal degree in co-relation 43069. Up to 5516 conditions per place. [2024-06-27 18:49:23,646 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 512 selfloop transitions, 101 changer transitions 0/620 dead transitions. [2024-06-27 18:49:23,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 620 transitions, 10708 flow [2024-06-27 18:49:23,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:23,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:49:23,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 18:49:23,650 INFO L175 Difference]: Start difference. First operand has 524 places, 582 transitions, 9106 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:49:23,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 620 transitions, 10708 flow [2024-06-27 18:49:27,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 620 transitions, 10283 flow, removed 87 selfloop flow, removed 10 redundant places. [2024-06-27 18:49:27,978 INFO L231 Difference]: Finished difference. Result has 525 places, 584 transitions, 9092 flow [2024-06-27 18:49:27,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8681, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9092, PETRI_PLACES=525, PETRI_TRANSITIONS=584} [2024-06-27 18:49:27,979 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 484 predicate places. [2024-06-27 18:49:27,979 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 584 transitions, 9092 flow [2024-06-27 18:49:27,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:27,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:27,979 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:27,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-27 18:49:27,980 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:27,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:27,980 INFO L85 PathProgramCache]: Analyzing trace with hash 335780439, now seen corresponding path program 23 times [2024-06-27 18:49:27,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:27,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039771927] [2024-06-27 18:49:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:27,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:28,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:28,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:28,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039771927] [2024-06-27 18:49:28,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039771927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:28,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:28,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:28,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558030971] [2024-06-27 18:49:28,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:28,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:28,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:28,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:28,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:29,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:49:29,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 584 transitions, 9092 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:29,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:29,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:49:29,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:31,073 INFO L124 PetriNetUnfolderBase]: 3666/6482 cut-off events. [2024-06-27 18:49:31,074 INFO L125 PetriNetUnfolderBase]: For 343941/343941 co-relation queries the response was YES. [2024-06-27 18:49:31,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44431 conditions, 6482 events. 3666/6482 cut-off events. For 343941/343941 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 46469 event pairs, 1236 based on Foata normal form. 2/6274 useless extension candidates. Maximal degree in co-relation 44169. Up to 5107 conditions per place. [2024-06-27 18:49:31,178 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 470 selfloop transitions, 147 changer transitions 0/624 dead transitions. [2024-06-27 18:49:31,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 624 transitions, 11178 flow [2024-06-27 18:49:31,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:31,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:49:31,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:49:31,188 INFO L175 Difference]: Start difference. First operand has 525 places, 584 transitions, 9092 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:49:31,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 624 transitions, 11178 flow [2024-06-27 18:49:35,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 624 transitions, 10831 flow, removed 83 selfloop flow, removed 9 redundant places. [2024-06-27 18:49:35,971 INFO L231 Difference]: Finished difference. Result has 527 places, 588 transitions, 9429 flow [2024-06-27 18:49:35,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8745, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9429, PETRI_PLACES=527, PETRI_TRANSITIONS=588} [2024-06-27 18:49:35,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 486 predicate places. [2024-06-27 18:49:35,972 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 588 transitions, 9429 flow [2024-06-27 18:49:35,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:35,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:35,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:35,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-27 18:49:35,972 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:35,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:35,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1188932347, now seen corresponding path program 24 times [2024-06-27 18:49:35,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:35,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966949428] [2024-06-27 18:49:35,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:35,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:35,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:36,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:36,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966949428] [2024-06-27 18:49:36,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966949428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:36,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:36,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:36,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468249849] [2024-06-27 18:49:36,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:36,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:36,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:36,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:36,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:37,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:49:37,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 588 transitions, 9429 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:37,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:37,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:49:37,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:39,168 INFO L124 PetriNetUnfolderBase]: 3682/6511 cut-off events. [2024-06-27 18:49:39,168 INFO L125 PetriNetUnfolderBase]: For 350808/350808 co-relation queries the response was YES. [2024-06-27 18:49:39,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44896 conditions, 6511 events. 3682/6511 cut-off events. For 350808/350808 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 46841 event pairs, 1264 based on Foata normal form. 2/6313 useless extension candidates. Maximal degree in co-relation 44633. Up to 5489 conditions per place. [2024-06-27 18:49:39,273 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 480 selfloop transitions, 137 changer transitions 0/624 dead transitions. [2024-06-27 18:49:39,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 624 transitions, 11323 flow [2024-06-27 18:49:39,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:39,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:49:39,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 18:49:39,275 INFO L175 Difference]: Start difference. First operand has 527 places, 588 transitions, 9429 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:49:39,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 624 transitions, 11323 flow [2024-06-27 18:49:44,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 624 transitions, 10957 flow, removed 117 selfloop flow, removed 8 redundant places. [2024-06-27 18:49:44,360 INFO L231 Difference]: Finished difference. Result has 530 places, 590 transitions, 9545 flow [2024-06-27 18:49:44,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9093, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9545, PETRI_PLACES=530, PETRI_TRANSITIONS=590} [2024-06-27 18:49:44,361 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-27 18:49:44,361 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 590 transitions, 9545 flow [2024-06-27 18:49:44,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:44,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:44,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:44,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-27 18:49:44,361 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:44,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:44,362 INFO L85 PathProgramCache]: Analyzing trace with hash -112003947, now seen corresponding path program 25 times [2024-06-27 18:49:44,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:44,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917402774] [2024-06-27 18:49:44,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:44,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:45,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:45,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:45,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917402774] [2024-06-27 18:49:45,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917402774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:45,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:45,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:45,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763685310] [2024-06-27 18:49:45,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:45,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:45,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:45,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:45,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:45,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:49:45,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 590 transitions, 9545 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:45,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:45,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:49:45,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:47,726 INFO L124 PetriNetUnfolderBase]: 3698/6541 cut-off events. [2024-06-27 18:49:47,727 INFO L125 PetriNetUnfolderBase]: For 342381/342381 co-relation queries the response was YES. [2024-06-27 18:49:47,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45206 conditions, 6541 events. 3698/6541 cut-off events. For 342381/342381 co-relation queries the response was YES. Maximal size of possible extension queue 437. Compared 47068 event pairs, 1314 based on Foata normal form. 2/6340 useless extension candidates. Maximal degree in co-relation 44942. Up to 5777 conditions per place. [2024-06-27 18:49:47,817 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 486 selfloop transitions, 131 changer transitions 0/624 dead transitions. [2024-06-27 18:49:47,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 624 transitions, 11403 flow [2024-06-27 18:49:47,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:47,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:47,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 18:49:47,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41277641277641275 [2024-06-27 18:49:47,818 INFO L175 Difference]: Start difference. First operand has 530 places, 590 transitions, 9545 flow. Second operand 11 states and 168 transitions. [2024-06-27 18:49:47,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 624 transitions, 11403 flow [2024-06-27 18:49:52,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 624 transitions, 10941 flow, removed 78 selfloop flow, removed 11 redundant places. [2024-06-27 18:49:52,327 INFO L231 Difference]: Finished difference. Result has 530 places, 592 transitions, 9531 flow [2024-06-27 18:49:52,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9091, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9531, PETRI_PLACES=530, PETRI_TRANSITIONS=592} [2024-06-27 18:49:52,327 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-27 18:49:52,327 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 592 transitions, 9531 flow [2024-06-27 18:49:52,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:52,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:49:52,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:49:52,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-27 18:49:52,328 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:49:52,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:49:52,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1316093227, now seen corresponding path program 26 times [2024-06-27 18:49:52,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:49:52,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41310156] [2024-06-27 18:49:52,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:49:52,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:49:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:49:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:49:53,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:49:53,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41310156] [2024-06-27 18:49:53,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41310156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:49:53,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:49:53,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:49:53,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95794529] [2024-06-27 18:49:53,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:49:53,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:49:53,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:49:53,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:49:53,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:49:53,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:49:53,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 592 transitions, 9531 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:49:53,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:49:53,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:49:53,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:49:55,486 INFO L124 PetriNetUnfolderBase]: 3695/6537 cut-off events. [2024-06-27 18:49:55,487 INFO L125 PetriNetUnfolderBase]: For 312796/312796 co-relation queries the response was YES. [2024-06-27 18:49:55,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44445 conditions, 6537 events. 3695/6537 cut-off events. For 312796/312796 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 47052 event pairs, 1357 based on Foata normal form. 2/6333 useless extension candidates. Maximal degree in co-relation 44182. Up to 5955 conditions per place. [2024-06-27 18:49:55,595 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 487 selfloop transitions, 127 changer transitions 0/621 dead transitions. [2024-06-27 18:49:55,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 621 transitions, 10915 flow [2024-06-27 18:49:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:49:55,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:49:55,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 18:49:55,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004914004914005 [2024-06-27 18:49:55,596 INFO L175 Difference]: Start difference. First operand has 530 places, 592 transitions, 9531 flow. Second operand 11 states and 163 transitions. [2024-06-27 18:49:55,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 621 transitions, 10915 flow [2024-06-27 18:50:00,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 621 transitions, 10335 flow, removed 147 selfloop flow, removed 11 redundant places. [2024-06-27 18:50:00,270 INFO L231 Difference]: Finished difference. Result has 530 places, 592 transitions, 9223 flow [2024-06-27 18:50:00,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8951, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9223, PETRI_PLACES=530, PETRI_TRANSITIONS=592} [2024-06-27 18:50:00,270 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 489 predicate places. [2024-06-27 18:50:00,270 INFO L495 AbstractCegarLoop]: Abstraction has has 530 places, 592 transitions, 9223 flow [2024-06-27 18:50:00,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:00,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:00,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:00,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-27 18:50:00,271 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:00,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:00,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1099748735, now seen corresponding path program 27 times [2024-06-27 18:50:00,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:00,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522790692] [2024-06-27 18:50:00,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:00,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:01,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:01,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522790692] [2024-06-27 18:50:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522790692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:01,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:01,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868408407] [2024-06-27 18:50:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:01,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:01,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:01,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:01,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:01,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:50:01,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 592 transitions, 9223 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:01,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:01,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:50:01,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:03,390 INFO L124 PetriNetUnfolderBase]: 3779/6686 cut-off events. [2024-06-27 18:50:03,391 INFO L125 PetriNetUnfolderBase]: For 425042/425042 co-relation queries the response was YES. [2024-06-27 18:50:03,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45450 conditions, 6686 events. 3779/6686 cut-off events. For 425042/425042 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 48280 event pairs, 1268 based on Foata normal form. 12/6487 useless extension candidates. Maximal degree in co-relation 45188. Up to 5494 conditions per place. [2024-06-27 18:50:03,509 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 453 selfloop transitions, 166 changer transitions 0/626 dead transitions. [2024-06-27 18:50:03,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 626 transitions, 10851 flow [2024-06-27 18:50:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:50:03,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226044226044226 [2024-06-27 18:50:03,511 INFO L175 Difference]: Start difference. First operand has 530 places, 592 transitions, 9223 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:50:03,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 626 transitions, 10851 flow [2024-06-27 18:50:08,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 626 transitions, 10553 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 18:50:08,647 INFO L231 Difference]: Finished difference. Result has 529 places, 594 transitions, 9464 flow [2024-06-27 18:50:08,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8925, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9464, PETRI_PLACES=529, PETRI_TRANSITIONS=594} [2024-06-27 18:50:08,660 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 488 predicate places. [2024-06-27 18:50:08,660 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 594 transitions, 9464 flow [2024-06-27 18:50:08,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:08,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:08,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:08,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-27 18:50:08,661 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:08,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:08,661 INFO L85 PathProgramCache]: Analyzing trace with hash -201053081, now seen corresponding path program 2 times [2024-06-27 18:50:08,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:08,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711955392] [2024-06-27 18:50:08,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:08,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:09,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711955392] [2024-06-27 18:50:09,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711955392] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:09,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:09,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:09,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562726663] [2024-06-27 18:50:09,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:09,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:09,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:09,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:09,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:09,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:50:09,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 594 transitions, 9464 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:09,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:09,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:50:09,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:12,152 INFO L124 PetriNetUnfolderBase]: 3893/6904 cut-off events. [2024-06-27 18:50:12,153 INFO L125 PetriNetUnfolderBase]: For 503855/503855 co-relation queries the response was YES. [2024-06-27 18:50:12,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49032 conditions, 6904 events. 3893/6904 cut-off events. For 503855/503855 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 50229 event pairs, 1271 based on Foata normal form. 8/6711 useless extension candidates. Maximal degree in co-relation 48771. Up to 4771 conditions per place. [2024-06-27 18:50:12,272 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 439 selfloop transitions, 192 changer transitions 0/638 dead transitions. [2024-06-27 18:50:12,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 638 transitions, 11606 flow [2024-06-27 18:50:12,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:50:12,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:50:12,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 18:50:12,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-27 18:50:12,273 INFO L175 Difference]: Start difference. First operand has 529 places, 594 transitions, 9464 flow. Second operand 12 states and 190 transitions. [2024-06-27 18:50:12,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 638 transitions, 11606 flow [2024-06-27 18:50:18,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 638 transitions, 11119 flow, removed 80 selfloop flow, removed 10 redundant places. [2024-06-27 18:50:18,239 INFO L231 Difference]: Finished difference. Result has 531 places, 596 transitions, 9643 flow [2024-06-27 18:50:18,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=8979, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9643, PETRI_PLACES=531, PETRI_TRANSITIONS=596} [2024-06-27 18:50:18,239 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 490 predicate places. [2024-06-27 18:50:18,239 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 596 transitions, 9643 flow [2024-06-27 18:50:18,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:18,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:18,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:18,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-27 18:50:18,240 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:18,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:18,241 INFO L85 PathProgramCache]: Analyzing trace with hash -209634749, now seen corresponding path program 28 times [2024-06-27 18:50:18,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:18,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403274876] [2024-06-27 18:50:18,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:18,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:18,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:19,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:19,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:19,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403274876] [2024-06-27 18:50:19,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403274876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:19,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:19,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:19,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30610126] [2024-06-27 18:50:19,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:19,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:19,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:19,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:19,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:19,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:50:19,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 596 transitions, 9643 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:19,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:19,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:50:19,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:21,766 INFO L124 PetriNetUnfolderBase]: 3909/6931 cut-off events. [2024-06-27 18:50:21,766 INFO L125 PetriNetUnfolderBase]: For 429319/429319 co-relation queries the response was YES. [2024-06-27 18:50:21,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48812 conditions, 6931 events. 3909/6931 cut-off events. For 429319/429319 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 50561 event pairs, 1372 based on Foata normal form. 2/6717 useless extension candidates. Maximal degree in co-relation 48551. Up to 6000 conditions per place. [2024-06-27 18:50:21,858 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 468 selfloop transitions, 151 changer transitions 0/626 dead transitions. [2024-06-27 18:50:21,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 626 transitions, 11233 flow [2024-06-27 18:50:21,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:21,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 169 transitions. [2024-06-27 18:50:21,860 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4152334152334152 [2024-06-27 18:50:21,860 INFO L175 Difference]: Start difference. First operand has 531 places, 596 transitions, 9643 flow. Second operand 11 states and 169 transitions. [2024-06-27 18:50:21,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 626 transitions, 11233 flow [2024-06-27 18:50:26,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 626 transitions, 10796 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:26,791 INFO L231 Difference]: Finished difference. Result has 533 places, 598 transitions, 9716 flow [2024-06-27 18:50:26,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9220, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9716, PETRI_PLACES=533, PETRI_TRANSITIONS=598} [2024-06-27 18:50:26,792 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 492 predicate places. [2024-06-27 18:50:26,792 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 598 transitions, 9716 flow [2024-06-27 18:50:26,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:26,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:26,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:26,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-27 18:50:26,793 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:26,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash -2101069489, now seen corresponding path program 29 times [2024-06-27 18:50:26,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:26,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669689932] [2024-06-27 18:50:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:26,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:27,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:27,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:27,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669689932] [2024-06-27 18:50:27,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669689932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:27,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:27,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:27,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389454486] [2024-06-27 18:50:27,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:27,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:27,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:27,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:27,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:27,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:50:27,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 598 transitions, 9716 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:27,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:27,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:50:27,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:30,048 INFO L124 PetriNetUnfolderBase]: 3925/6961 cut-off events. [2024-06-27 18:50:30,048 INFO L125 PetriNetUnfolderBase]: For 418235/418235 co-relation queries the response was YES. [2024-06-27 18:50:30,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49056 conditions, 6961 events. 3925/6961 cut-off events. For 418235/418235 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 50858 event pairs, 1352 based on Foata normal form. 2/6755 useless extension candidates. Maximal degree in co-relation 48795. Up to 5644 conditions per place. [2024-06-27 18:50:30,157 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 465 selfloop transitions, 162 changer transitions 0/634 dead transitions. [2024-06-27 18:50:30,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 634 transitions, 11378 flow [2024-06-27 18:50:30,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:50:30,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:50:30,159 INFO L175 Difference]: Start difference. First operand has 533 places, 598 transitions, 9716 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:50:30,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 634 transitions, 11378 flow [2024-06-27 18:50:35,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 634 transitions, 10916 flow, removed 83 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:35,181 INFO L231 Difference]: Finished difference. Result has 535 places, 600 transitions, 9786 flow [2024-06-27 18:50:35,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9254, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9786, PETRI_PLACES=535, PETRI_TRANSITIONS=600} [2024-06-27 18:50:35,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 494 predicate places. [2024-06-27 18:50:35,182 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 600 transitions, 9786 flow [2024-06-27 18:50:35,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:35,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:35,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:35,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-27 18:50:35,183 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:35,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:35,183 INFO L85 PathProgramCache]: Analyzing trace with hash -437535899, now seen corresponding path program 30 times [2024-06-27 18:50:35,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:35,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676118137] [2024-06-27 18:50:35,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:35,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:36,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:36,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676118137] [2024-06-27 18:50:36,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676118137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:36,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:36,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:36,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344525949] [2024-06-27 18:50:36,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:36,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:36,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:36,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:36,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:36,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:50:36,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 600 transitions, 9786 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:36,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:36,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:50:36,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:38,575 INFO L124 PetriNetUnfolderBase]: 3941/6988 cut-off events. [2024-06-27 18:50:38,575 INFO L125 PetriNetUnfolderBase]: For 425814/425814 co-relation queries the response was YES. [2024-06-27 18:50:38,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49393 conditions, 6988 events. 3941/6988 cut-off events. For 425814/425814 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 51114 event pairs, 1390 based on Foata normal form. 2/6773 useless extension candidates. Maximal degree in co-relation 49131. Up to 6056 conditions per place. [2024-06-27 18:50:38,695 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 484 selfloop transitions, 139 changer transitions 0/630 dead transitions. [2024-06-27 18:50:38,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 630 transitions, 11376 flow [2024-06-27 18:50:38,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:38,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:38,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:50:38,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4176904176904177 [2024-06-27 18:50:38,697 INFO L175 Difference]: Start difference. First operand has 535 places, 600 transitions, 9786 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:50:38,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 630 transitions, 11376 flow [2024-06-27 18:50:44,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 630 transitions, 10865 flow, removed 95 selfloop flow, removed 10 redundant places. [2024-06-27 18:50:44,180 INFO L231 Difference]: Finished difference. Result has 536 places, 602 transitions, 9753 flow [2024-06-27 18:50:44,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9275, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9753, PETRI_PLACES=536, PETRI_TRANSITIONS=602} [2024-06-27 18:50:44,181 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 495 predicate places. [2024-06-27 18:50:44,181 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 602 transitions, 9753 flow [2024-06-27 18:50:44,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:44,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:44,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:44,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-27 18:50:44,181 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:44,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:44,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1965996657, now seen corresponding path program 31 times [2024-06-27 18:50:44,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:44,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917927614] [2024-06-27 18:50:44,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:44,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:45,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917927614] [2024-06-27 18:50:45,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917927614] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:45,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559770297] [2024-06-27 18:50:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:45,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:45,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:45,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:45,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:50:45,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 602 transitions, 9753 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:45,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:45,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:50:45,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:47,510 INFO L124 PetriNetUnfolderBase]: 3957/7016 cut-off events. [2024-06-27 18:50:47,511 INFO L125 PetriNetUnfolderBase]: For 427325/427325 co-relation queries the response was YES. [2024-06-27 18:50:47,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49459 conditions, 7016 events. 3957/7016 cut-off events. For 427325/427325 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 51329 event pairs, 1380 based on Foata normal form. 2/6803 useless extension candidates. Maximal degree in co-relation 49197. Up to 5996 conditions per place. [2024-06-27 18:50:47,625 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 482 selfloop transitions, 145 changer transitions 0/634 dead transitions. [2024-06-27 18:50:47,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 634 transitions, 11377 flow [2024-06-27 18:50:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:47,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:47,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:50:47,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:50:47,627 INFO L175 Difference]: Start difference. First operand has 536 places, 602 transitions, 9753 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:50:47,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 634 transitions, 11377 flow [2024-06-27 18:50:53,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 634 transitions, 10927 flow, removed 89 selfloop flow, removed 9 redundant places. [2024-06-27 18:50:53,526 INFO L231 Difference]: Finished difference. Result has 538 places, 604 transitions, 9807 flow [2024-06-27 18:50:53,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9303, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9807, PETRI_PLACES=538, PETRI_TRANSITIONS=604} [2024-06-27 18:50:53,527 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-27 18:50:53,527 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 604 transitions, 9807 flow [2024-06-27 18:50:53,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:53,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:50:53,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:50:53,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-27 18:50:53,528 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:50:53,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:50:53,529 INFO L85 PathProgramCache]: Analyzing trace with hash 863393885, now seen corresponding path program 32 times [2024-06-27 18:50:53,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:50:53,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383120474] [2024-06-27 18:50:53,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:50:53,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:50:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:50:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:50:54,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:50:54,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383120474] [2024-06-27 18:50:54,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383120474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:50:54,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:50:54,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:50:54,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117329551] [2024-06-27 18:50:54,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:50:54,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:50:54,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:50:54,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:50:54,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:50:54,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:50:54,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 604 transitions, 9807 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:50:54,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:50:54,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:50:54,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:50:57,132 INFO L124 PetriNetUnfolderBase]: 3973/7046 cut-off events. [2024-06-27 18:50:57,133 INFO L125 PetriNetUnfolderBase]: For 435340/435340 co-relation queries the response was YES. [2024-06-27 18:50:57,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49750 conditions, 7046 events. 3973/7046 cut-off events. For 435340/435340 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 51555 event pairs, 1366 based on Foata normal form. 2/6845 useless extension candidates. Maximal degree in co-relation 49487. Up to 5464 conditions per place. [2024-06-27 18:50:57,231 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 467 selfloop transitions, 168 changer transitions 0/642 dead transitions. [2024-06-27 18:50:57,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 642 transitions, 11507 flow [2024-06-27 18:50:57,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:50:57,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:50:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:50:57,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:50:57,235 INFO L175 Difference]: Start difference. First operand has 538 places, 604 transitions, 9807 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:50:57,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 642 transitions, 11507 flow [2024-06-27 18:51:03,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 642 transitions, 11029 flow, removed 97 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:03,062 INFO L231 Difference]: Finished difference. Result has 540 places, 606 transitions, 9883 flow [2024-06-27 18:51:03,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9329, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9883, PETRI_PLACES=540, PETRI_TRANSITIONS=606} [2024-06-27 18:51:03,063 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 499 predicate places. [2024-06-27 18:51:03,063 INFO L495 AbstractCegarLoop]: Abstraction has has 540 places, 606 transitions, 9883 flow [2024-06-27 18:51:03,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:03,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:03,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:03,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-27 18:51:03,063 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:03,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:03,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1019814819, now seen corresponding path program 33 times [2024-06-27 18:51:03,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:03,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021564321] [2024-06-27 18:51:03,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:03,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:04,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021564321] [2024-06-27 18:51:04,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021564321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:04,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:04,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:04,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202728760] [2024-06-27 18:51:04,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:04,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:04,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:04,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:51:04,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 540 places, 606 transitions, 9883 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:04,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:04,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:51:04,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:06,540 INFO L124 PetriNetUnfolderBase]: 3970/7041 cut-off events. [2024-06-27 18:51:06,540 INFO L125 PetriNetUnfolderBase]: For 411599/411599 co-relation queries the response was YES. [2024-06-27 18:51:06,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49179 conditions, 7041 events. 3970/7041 cut-off events. For 411599/411599 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 51514 event pairs, 1439 based on Foata normal form. 2/6828 useless extension candidates. Maximal degree in co-relation 48915. Up to 6107 conditions per place. [2024-06-27 18:51:06,655 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 500 selfloop transitions, 129 changer transitions 0/636 dead transitions. [2024-06-27 18:51:06,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 636 transitions, 11493 flow [2024-06-27 18:51:06,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:06,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:06,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:51:06,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201474201474201 [2024-06-27 18:51:06,657 INFO L175 Difference]: Start difference. First operand has 540 places, 606 transitions, 9883 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:51:06,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 636 transitions, 11493 flow [2024-06-27 18:51:12,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 636 transitions, 10965 flow, removed 99 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:12,433 INFO L231 Difference]: Finished difference. Result has 542 places, 608 transitions, 9821 flow [2024-06-27 18:51:12,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9355, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9821, PETRI_PLACES=542, PETRI_TRANSITIONS=608} [2024-06-27 18:51:12,434 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 501 predicate places. [2024-06-27 18:51:12,434 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 608 transitions, 9821 flow [2024-06-27 18:51:12,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:12,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:12,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:12,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-27 18:51:12,434 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:12,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:12,435 INFO L85 PathProgramCache]: Analyzing trace with hash 82608463, now seen corresponding path program 34 times [2024-06-27 18:51:12,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:12,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386871630] [2024-06-27 18:51:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:12,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:13,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:13,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386871630] [2024-06-27 18:51:13,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386871630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:13,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:13,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:13,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092554223] [2024-06-27 18:51:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:13,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:13,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:13,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:13,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:13,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:51:13,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 608 transitions, 9821 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:13,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:13,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:51:13,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:15,741 INFO L124 PetriNetUnfolderBase]: 3986/7069 cut-off events. [2024-06-27 18:51:15,742 INFO L125 PetriNetUnfolderBase]: For 416493/416493 co-relation queries the response was YES. [2024-06-27 18:51:15,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49172 conditions, 7069 events. 3986/7069 cut-off events. For 416493/416493 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 51765 event pairs, 1429 based on Foata normal form. 2/6858 useless extension candidates. Maximal degree in co-relation 48907. Up to 6047 conditions per place. [2024-06-27 18:51:15,865 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 498 selfloop transitions, 135 changer transitions 0/640 dead transitions. [2024-06-27 18:51:15,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 640 transitions, 11467 flow [2024-06-27 18:51:15,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:15,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:51:15,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 18:51:15,867 INFO L175 Difference]: Start difference. First operand has 542 places, 608 transitions, 9821 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:51:15,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 640 transitions, 11467 flow [2024-06-27 18:51:22,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 640 transitions, 11029 flow, removed 93 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:22,566 INFO L231 Difference]: Finished difference. Result has 544 places, 610 transitions, 9877 flow [2024-06-27 18:51:22,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9383, PETRI_DIFFERENCE_MINUEND_PLACES=533, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9877, PETRI_PLACES=544, PETRI_TRANSITIONS=610} [2024-06-27 18:51:22,566 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 503 predicate places. [2024-06-27 18:51:22,566 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 610 transitions, 9877 flow [2024-06-27 18:51:22,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:22,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:22,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:22,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-27 18:51:22,567 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:22,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 82435483, now seen corresponding path program 35 times [2024-06-27 18:51:22,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:22,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394993799] [2024-06-27 18:51:22,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:22,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:23,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:23,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:23,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394993799] [2024-06-27 18:51:23,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394993799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:23,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:23,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:23,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981790102] [2024-06-27 18:51:23,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:23,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:23,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:23,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:23,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:23,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:51:23,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 610 transitions, 9877 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:23,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:23,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:51:23,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:26,004 INFO L124 PetriNetUnfolderBase]: 4002/7097 cut-off events. [2024-06-27 18:51:26,004 INFO L125 PetriNetUnfolderBase]: For 423815/423815 co-relation queries the response was YES. [2024-06-27 18:51:26,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49445 conditions, 7097 events. 4002/7097 cut-off events. For 423815/423815 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 52088 event pairs, 1419 based on Foata normal form. 2/6888 useless extension candidates. Maximal degree in co-relation 49179. Up to 5935 conditions per place. [2024-06-27 18:51:26,104 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 494 selfloop transitions, 143 changer transitions 0/644 dead transitions. [2024-06-27 18:51:26,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 644 transitions, 11547 flow [2024-06-27 18:51:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:51:26,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:51:26,106 INFO L175 Difference]: Start difference. First operand has 544 places, 610 transitions, 9877 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:51:26,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 644 transitions, 11547 flow [2024-06-27 18:51:31,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 644 transitions, 11079 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:31,875 INFO L231 Difference]: Finished difference. Result has 546 places, 612 transitions, 9923 flow [2024-06-27 18:51:31,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9409, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=610, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=9923, PETRI_PLACES=546, PETRI_TRANSITIONS=612} [2024-06-27 18:51:31,875 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 505 predicate places. [2024-06-27 18:51:31,875 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 612 transitions, 9923 flow [2024-06-27 18:51:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:31,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:31,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:31,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-27 18:51:31,876 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:31,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash 77966833, now seen corresponding path program 36 times [2024-06-27 18:51:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:31,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765519661] [2024-06-27 18:51:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:31,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:32,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:32,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765519661] [2024-06-27 18:51:32,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765519661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:32,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:32,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:32,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262639838] [2024-06-27 18:51:32,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:32,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:32,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:32,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:32,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:32,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:51:32,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 612 transitions, 9923 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:32,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:32,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:51:32,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:35,362 INFO L124 PetriNetUnfolderBase]: 4018/7126 cut-off events. [2024-06-27 18:51:35,362 INFO L125 PetriNetUnfolderBase]: For 430965/430965 co-relation queries the response was YES. [2024-06-27 18:51:35,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49726 conditions, 7126 events. 4018/7126 cut-off events. For 430965/430965 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 52276 event pairs, 1421 based on Foata normal form. 2/6932 useless extension candidates. Maximal degree in co-relation 49459. Up to 5087 conditions per place. [2024-06-27 18:51:35,477 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 459 selfloop transitions, 186 changer transitions 0/652 dead transitions. [2024-06-27 18:51:35,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 652 transitions, 11669 flow [2024-06-27 18:51:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:35,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:51:35,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:51:35,479 INFO L175 Difference]: Start difference. First operand has 546 places, 612 transitions, 9923 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:51:35,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 652 transitions, 11669 flow [2024-06-27 18:51:42,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 652 transitions, 11181 flow, removed 104 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:42,304 INFO L231 Difference]: Finished difference. Result has 548 places, 614 transitions, 10039 flow [2024-06-27 18:51:42,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9435, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10039, PETRI_PLACES=548, PETRI_TRANSITIONS=614} [2024-06-27 18:51:42,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 507 predicate places. [2024-06-27 18:51:42,304 INFO L495 AbstractCegarLoop]: Abstraction has has 548 places, 614 transitions, 10039 flow [2024-06-27 18:51:42,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:42,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:42,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:42,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-27 18:51:42,305 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:42,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:42,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1520179797, now seen corresponding path program 37 times [2024-06-27 18:51:42,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:42,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89732520] [2024-06-27 18:51:42,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:42,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:43,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:43,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89732520] [2024-06-27 18:51:43,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89732520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:43,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:43,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:43,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67997013] [2024-06-27 18:51:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:43,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:43,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:43,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:51:43,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 614 transitions, 10039 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:43,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:43,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:51:43,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:45,931 INFO L124 PetriNetUnfolderBase]: 4034/7155 cut-off events. [2024-06-27 18:51:45,931 INFO L125 PetriNetUnfolderBase]: For 438658/438658 co-relation queries the response was YES. [2024-06-27 18:51:46,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50215 conditions, 7155 events. 4034/7155 cut-off events. For 438658/438658 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 52509 event pairs, 1419 based on Foata normal form. 2/6940 useless extension candidates. Maximal degree in co-relation 49947. Up to 5776 conditions per place. [2024-06-27 18:51:46,051 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 460 selfloop transitions, 176 changer transitions 0/643 dead transitions. [2024-06-27 18:51:46,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 643 transitions, 11691 flow [2024-06-27 18:51:46,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:46,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:46,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:51:46,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:51:46,053 INFO L175 Difference]: Start difference. First operand has 548 places, 614 transitions, 10039 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:51:46,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 643 transitions, 11691 flow [2024-06-27 18:51:52,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 643 transitions, 11113 flow, removed 106 selfloop flow, removed 9 redundant places. [2024-06-27 18:51:52,998 INFO L231 Difference]: Finished difference. Result has 550 places, 616 transitions, 10046 flow [2024-06-27 18:51:52,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9461, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10046, PETRI_PLACES=550, PETRI_TRANSITIONS=616} [2024-06-27 18:51:52,999 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 509 predicate places. [2024-06-27 18:51:52,999 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 616 transitions, 10046 flow [2024-06-27 18:51:52,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:52,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:51:52,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:51:53,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-27 18:51:53,000 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:51:53,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:51:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1520186307, now seen corresponding path program 38 times [2024-06-27 18:51:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:51:53,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526849944] [2024-06-27 18:51:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:51:53,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:51:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:51:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:51:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:51:53,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526849944] [2024-06-27 18:51:53,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526849944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:51:53,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:51:53,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:51:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474096736] [2024-06-27 18:51:53,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:51:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:51:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:51:53,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:51:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:51:54,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:51:54,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 616 transitions, 10046 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:51:54,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:51:54,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:51:54,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:51:56,671 INFO L124 PetriNetUnfolderBase]: 4050/7185 cut-off events. [2024-06-27 18:51:56,672 INFO L125 PetriNetUnfolderBase]: For 445243/445243 co-relation queries the response was YES. [2024-06-27 18:51:56,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50291 conditions, 7185 events. 4050/7185 cut-off events. For 445243/445243 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 52777 event pairs, 1413 based on Foata normal form. 2/6969 useless extension candidates. Maximal degree in co-relation 50022. Up to 5760 conditions per place. [2024-06-27 18:51:56,782 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 461 selfloop transitions, 179 changer transitions 0/647 dead transitions. [2024-06-27 18:51:56,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 647 transitions, 11722 flow [2024-06-27 18:51:56,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:51:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:51:56,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:51:56,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:51:56,783 INFO L175 Difference]: Start difference. First operand has 550 places, 616 transitions, 10046 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:51:56,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 647 transitions, 11722 flow [2024-06-27 18:52:03,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 647 transitions, 11153 flow, removed 110 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:03,603 INFO L231 Difference]: Finished difference. Result has 552 places, 618 transitions, 10072 flow [2024-06-27 18:52:03,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9477, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10072, PETRI_PLACES=552, PETRI_TRANSITIONS=618} [2024-06-27 18:52:03,604 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 511 predicate places. [2024-06-27 18:52:03,604 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 618 transitions, 10072 flow [2024-06-27 18:52:03,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:03,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:03,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:03,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-27 18:52:03,605 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:03,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:03,605 INFO L85 PathProgramCache]: Analyzing trace with hash 599383757, now seen corresponding path program 39 times [2024-06-27 18:52:03,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:03,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247115950] [2024-06-27 18:52:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:03,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:03,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:04,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:04,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247115950] [2024-06-27 18:52:04,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247115950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:04,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:04,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:04,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091661890] [2024-06-27 18:52:04,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:04,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:04,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:04,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:04,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:52:04,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 618 transitions, 10072 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:04,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:04,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:52:04,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:06,911 INFO L124 PetriNetUnfolderBase]: 4134/7344 cut-off events. [2024-06-27 18:52:06,911 INFO L125 PetriNetUnfolderBase]: For 590130/590130 co-relation queries the response was YES. [2024-06-27 18:52:07,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51824 conditions, 7344 events. 4134/7344 cut-off events. For 590130/590130 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 54197 event pairs, 1461 based on Foata normal form. 12/7136 useless extension candidates. Maximal degree in co-relation 51554. Up to 5830 conditions per place. [2024-06-27 18:52:07,039 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 484 selfloop transitions, 160 changer transitions 0/651 dead transitions. [2024-06-27 18:52:07,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 651 transitions, 11792 flow [2024-06-27 18:52:07,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:07,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:07,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 181 transitions. [2024-06-27 18:52:07,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44471744471744473 [2024-06-27 18:52:07,041 INFO L175 Difference]: Start difference. First operand has 552 places, 618 transitions, 10072 flow. Second operand 11 states and 181 transitions. [2024-06-27 18:52:07,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 651 transitions, 11792 flow [2024-06-27 18:52:14,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 651 transitions, 11213 flow, removed 112 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:14,171 INFO L231 Difference]: Finished difference. Result has 554 places, 620 transitions, 10056 flow [2024-06-27 18:52:14,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9493, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10056, PETRI_PLACES=554, PETRI_TRANSITIONS=620} [2024-06-27 18:52:14,172 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 513 predicate places. [2024-06-27 18:52:14,172 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 620 transitions, 10056 flow [2024-06-27 18:52:14,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:14,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:14,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:14,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-27 18:52:14,172 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:14,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:14,173 INFO L85 PathProgramCache]: Analyzing trace with hash 599691215, now seen corresponding path program 3 times [2024-06-27 18:52:14,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:14,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036357639] [2024-06-27 18:52:14,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:14,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:15,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:15,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:15,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036357639] [2024-06-27 18:52:15,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036357639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:15,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:15,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:52:15,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230444725] [2024-06-27 18:52:15,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:15,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:52:15,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:15,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:52:15,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:52:15,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:52:15,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 620 transitions, 10056 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:15,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:15,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:52:15,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:17,592 INFO L124 PetriNetUnfolderBase]: 4248/7563 cut-off events. [2024-06-27 18:52:17,593 INFO L125 PetriNetUnfolderBase]: For 684654/684654 co-relation queries the response was YES. [2024-06-27 18:52:17,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55033 conditions, 7563 events. 4248/7563 cut-off events. For 684654/684654 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 56192 event pairs, 1497 based on Foata normal form. 8/7354 useless extension candidates. Maximal degree in co-relation 54762. Up to 5636 conditions per place. [2024-06-27 18:52:17,727 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 492 selfloop transitions, 161 changer transitions 0/660 dead transitions. [2024-06-27 18:52:17,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 660 transitions, 12304 flow [2024-06-27 18:52:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:52:17,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:52:17,729 INFO L175 Difference]: Start difference. First operand has 554 places, 620 transitions, 10056 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:52:17,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 660 transitions, 12304 flow [2024-06-27 18:52:25,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 660 transitions, 11785 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:25,154 INFO L231 Difference]: Finished difference. Result has 556 places, 622 transitions, 10173 flow [2024-06-27 18:52:25,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9537, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10173, PETRI_PLACES=556, PETRI_TRANSITIONS=622} [2024-06-27 18:52:25,155 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 515 predicate places. [2024-06-27 18:52:25,155 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 622 transitions, 10173 flow [2024-06-27 18:52:25,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:25,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:25,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:25,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-27 18:52:25,156 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:25,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:25,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1520359287, now seen corresponding path program 40 times [2024-06-27 18:52:25,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:25,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375275925] [2024-06-27 18:52:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:25,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:26,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375275925] [2024-06-27 18:52:26,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375275925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:26,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:26,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950017880] [2024-06-27 18:52:26,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:26,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:26,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:26,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:26,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:26,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:52:26,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 622 transitions, 10173 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:26,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:26,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:52:26,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:29,624 INFO L124 PetriNetUnfolderBase]: 4264/7591 cut-off events. [2024-06-27 18:52:29,624 INFO L125 PetriNetUnfolderBase]: For 599811/599811 co-relation queries the response was YES. [2024-06-27 18:52:29,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54612 conditions, 7591 events. 4264/7591 cut-off events. For 599811/599811 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 56513 event pairs, 1519 based on Foata normal form. 2/7374 useless extension candidates. Maximal degree in co-relation 54340. Up to 6092 conditions per place. [2024-06-27 18:52:29,735 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 465 selfloop transitions, 183 changer transitions 0/655 dead transitions. [2024-06-27 18:52:29,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 566 places, 655 transitions, 11887 flow [2024-06-27 18:52:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:29,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:52:29,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:52:29,736 INFO L175 Difference]: Start difference. First operand has 556 places, 622 transitions, 10173 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:52:29,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 566 places, 655 transitions, 11887 flow [2024-06-27 18:52:37,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 655 transitions, 11555 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-27 18:52:37,160 INFO L231 Difference]: Finished difference. Result has 560 places, 624 transitions, 10454 flow [2024-06-27 18:52:37,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9841, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10454, PETRI_PLACES=560, PETRI_TRANSITIONS=624} [2024-06-27 18:52:37,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 519 predicate places. [2024-06-27 18:52:37,160 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 624 transitions, 10454 flow [2024-06-27 18:52:37,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:37,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:37,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:37,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-27 18:52:37,161 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:37,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:37,161 INFO L85 PathProgramCache]: Analyzing trace with hash -641742571, now seen corresponding path program 41 times [2024-06-27 18:52:37,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:37,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731796621] [2024-06-27 18:52:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:37,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:38,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:38,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:38,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731796621] [2024-06-27 18:52:38,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731796621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:38,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:38,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:38,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492925299] [2024-06-27 18:52:38,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:38,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:38,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:38,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:52:38,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 624 transitions, 10454 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:38,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:38,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:52:38,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:41,523 INFO L124 PetriNetUnfolderBase]: 4364/7777 cut-off events. [2024-06-27 18:52:41,523 INFO L125 PetriNetUnfolderBase]: For 748390/748390 co-relation queries the response was YES. [2024-06-27 18:52:41,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58689 conditions, 7777 events. 4364/7777 cut-off events. For 748390/748390 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 58267 event pairs, 1576 based on Foata normal form. 2/7571 useless extension candidates. Maximal degree in co-relation 58415. Up to 5527 conditions per place. [2024-06-27 18:52:41,641 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 458 selfloop transitions, 202 changer transitions 0/667 dead transitions. [2024-06-27 18:52:41,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 667 transitions, 12940 flow [2024-06-27 18:52:41,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:41,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 18:52:41,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 18:52:41,643 INFO L175 Difference]: Start difference. First operand has 560 places, 624 transitions, 10454 flow. Second operand 11 states and 190 transitions. [2024-06-27 18:52:41,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 667 transitions, 12940 flow [2024-06-27 18:52:50,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 667 transitions, 12343 flow, removed 117 selfloop flow, removed 9 redundant places. [2024-06-27 18:52:50,423 INFO L231 Difference]: Finished difference. Result has 563 places, 629 transitions, 10949 flow [2024-06-27 18:52:50,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9857, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10949, PETRI_PLACES=563, PETRI_TRANSITIONS=629} [2024-06-27 18:52:50,424 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 522 predicate places. [2024-06-27 18:52:50,424 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 629 transitions, 10949 flow [2024-06-27 18:52:50,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:50,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:52:50,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:52:50,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-27 18:52:50,425 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:52:50,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:52:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash 591109547, now seen corresponding path program 42 times [2024-06-27 18:52:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:52:50,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053543269] [2024-06-27 18:52:50,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:52:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:52:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:52:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:52:51,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:52:51,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053543269] [2024-06-27 18:52:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053543269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:52:51,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:52:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:52:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197974905] [2024-06-27 18:52:51,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:52:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:52:51,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:52:51,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:52:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:52:51,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:52:51,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 629 transitions, 10949 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:52:51,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:52:51,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:52:51,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:52:54,745 INFO L124 PetriNetUnfolderBase]: 4380/7806 cut-off events. [2024-06-27 18:52:54,745 INFO L125 PetriNetUnfolderBase]: For 759812/759812 co-relation queries the response was YES. [2024-06-27 18:52:54,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59147 conditions, 7806 events. 4380/7806 cut-off events. For 759812/759812 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 58506 event pairs, 1607 based on Foata normal form. 2/7585 useless extension candidates. Maximal degree in co-relation 58871. Up to 6418 conditions per place. [2024-06-27 18:52:54,876 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 492 selfloop transitions, 159 changer transitions 0/658 dead transitions. [2024-06-27 18:52:54,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 658 transitions, 12637 flow [2024-06-27 18:52:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:52:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:52:54,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:52:54,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:52:54,878 INFO L175 Difference]: Start difference. First operand has 563 places, 629 transitions, 10949 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:52:54,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 658 transitions, 12637 flow [2024-06-27 18:53:04,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 658 transitions, 12033 flow, removed 156 selfloop flow, removed 9 redundant places. [2024-06-27 18:53:04,281 INFO L231 Difference]: Finished difference. Result has 565 places, 631 transitions, 10902 flow [2024-06-27 18:53:04,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10369, PETRI_DIFFERENCE_MINUEND_PLACES=554, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10902, PETRI_PLACES=565, PETRI_TRANSITIONS=631} [2024-06-27 18:53:04,281 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 524 predicate places. [2024-06-27 18:53:04,281 INFO L495 AbstractCegarLoop]: Abstraction has has 565 places, 631 transitions, 10902 flow [2024-06-27 18:53:04,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:04,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:04,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:04,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-27 18:53:04,282 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:04,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:04,282 INFO L85 PathProgramCache]: Analyzing trace with hash 591103037, now seen corresponding path program 43 times [2024-06-27 18:53:04,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:04,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501299079] [2024-06-27 18:53:04,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:04,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:05,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:05,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:05,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501299079] [2024-06-27 18:53:05,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501299079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:05,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:05,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:05,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987523626] [2024-06-27 18:53:05,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:05,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:05,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:05,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:05,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:53:05,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 565 places, 631 transitions, 10902 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:05,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:05,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:53:05,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:08,879 INFO L124 PetriNetUnfolderBase]: 4396/7834 cut-off events. [2024-06-27 18:53:08,879 INFO L125 PetriNetUnfolderBase]: For 733215/733215 co-relation queries the response was YES. [2024-06-27 18:53:08,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58950 conditions, 7834 events. 4396/7834 cut-off events. For 733215/733215 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 58694 event pairs, 1612 based on Foata normal form. 2/7616 useless extension candidates. Maximal degree in co-relation 58674. Up to 6254 conditions per place. [2024-06-27 18:53:08,996 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 495 selfloop transitions, 164 changer transitions 0/666 dead transitions. [2024-06-27 18:53:08,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 575 places, 666 transitions, 12646 flow [2024-06-27 18:53:08,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:53:08,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:53:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:53:08,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:53:08,998 INFO L175 Difference]: Start difference. First operand has 565 places, 631 transitions, 10902 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:53:08,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 575 places, 666 transitions, 12646 flow [2024-06-27 18:53:18,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 666 transitions, 12129 flow, removed 101 selfloop flow, removed 9 redundant places. [2024-06-27 18:53:18,736 INFO L231 Difference]: Finished difference. Result has 567 places, 633 transitions, 10936 flow [2024-06-27 18:53:18,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10385, PETRI_DIFFERENCE_MINUEND_PLACES=556, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=631, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10936, PETRI_PLACES=567, PETRI_TRANSITIONS=633} [2024-06-27 18:53:18,736 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 526 predicate places. [2024-06-27 18:53:18,737 INFO L495 AbstractCegarLoop]: Abstraction has has 567 places, 633 transitions, 10936 flow [2024-06-27 18:53:18,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:18,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:18,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:18,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-27 18:53:18,737 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:18,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1246293763, now seen corresponding path program 44 times [2024-06-27 18:53:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:18,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736791233] [2024-06-27 18:53:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:18,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:19,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:19,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:19,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736791233] [2024-06-27 18:53:19,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736791233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:19,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:19,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:19,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605279880] [2024-06-27 18:53:19,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:19,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:19,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:19,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:19,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:19,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:53:19,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 633 transitions, 10936 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:19,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:19,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:53:19,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:23,065 INFO L124 PetriNetUnfolderBase]: 4393/7829 cut-off events. [2024-06-27 18:53:23,065 INFO L125 PetriNetUnfolderBase]: For 709383/709383 co-relation queries the response was YES. [2024-06-27 18:53:23,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58155 conditions, 7829 events. 4393/7829 cut-off events. For 709383/709383 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 58675 event pairs, 1611 based on Foata normal form. 2/7608 useless extension candidates. Maximal degree in co-relation 57878. Up to 6441 conditions per place. [2024-06-27 18:53:23,191 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 495 selfloop transitions, 159 changer transitions 0/661 dead transitions. [2024-06-27 18:53:23,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 661 transitions, 12475 flow [2024-06-27 18:53:23,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:53:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:53:23,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:53:23,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:53:23,193 INFO L175 Difference]: Start difference. First operand has 567 places, 633 transitions, 10936 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:53:23,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 661 transitions, 12475 flow [2024-06-27 18:53:32,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 661 transitions, 11946 flow, removed 102 selfloop flow, removed 9 redundant places. [2024-06-27 18:53:32,170 INFO L231 Difference]: Finished difference. Result has 569 places, 634 transitions, 10807 flow [2024-06-27 18:53:32,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10407, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10807, PETRI_PLACES=569, PETRI_TRANSITIONS=634} [2024-06-27 18:53:32,172 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 528 predicate places. [2024-06-27 18:53:32,172 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 634 transitions, 10807 flow [2024-06-27 18:53:32,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:32,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:32,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:32,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-27 18:53:32,172 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:32,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:32,173 INFO L85 PathProgramCache]: Analyzing trace with hash 363201887, now seen corresponding path program 45 times [2024-06-27 18:53:32,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:32,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912867852] [2024-06-27 18:53:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:32,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:33,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:33,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912867852] [2024-06-27 18:53:33,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912867852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:33,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:33,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:33,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333161308] [2024-06-27 18:53:33,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:33,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:33,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:33,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:33,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:53:33,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 634 transitions, 10807 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:33,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:33,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:53:33,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:36,375 INFO L124 PetriNetUnfolderBase]: 4409/7857 cut-off events. [2024-06-27 18:53:36,376 INFO L125 PetriNetUnfolderBase]: For 721648/721648 co-relation queries the response was YES. [2024-06-27 18:53:36,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58320 conditions, 7857 events. 4409/7857 cut-off events. For 721648/721648 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 58914 event pairs, 1619 based on Foata normal form. 2/7637 useless extension candidates. Maximal degree in co-relation 58042. Up to 6425 conditions per place. [2024-06-27 18:53:36,488 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 496 selfloop transitions, 162 changer transitions 0/665 dead transitions. [2024-06-27 18:53:36,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 665 transitions, 12511 flow [2024-06-27 18:53:36,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:53:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:53:36,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:53:36,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:53:36,489 INFO L175 Difference]: Start difference. First operand has 569 places, 634 transitions, 10807 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:53:36,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 665 transitions, 12511 flow [2024-06-27 18:53:46,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 665 transitions, 11996 flow, removed 100 selfloop flow, removed 9 redundant places. [2024-06-27 18:53:46,014 INFO L231 Difference]: Finished difference. Result has 571 places, 636 transitions, 10845 flow [2024-06-27 18:53:46,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10292, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10845, PETRI_PLACES=571, PETRI_TRANSITIONS=636} [2024-06-27 18:53:46,015 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 530 predicate places. [2024-06-27 18:53:46,015 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 636 transitions, 10845 flow [2024-06-27 18:53:46,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:46,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:46,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:46,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-27 18:53:46,015 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:46,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash 363028907, now seen corresponding path program 46 times [2024-06-27 18:53:46,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:46,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277433015] [2024-06-27 18:53:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:46,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:46,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277433015] [2024-06-27 18:53:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277433015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:46,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:46,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:46,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411101881] [2024-06-27 18:53:46,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:46,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:46,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:46,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:46,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:47,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:53:47,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 636 transitions, 10845 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:47,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:47,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:53:47,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:53:50,026 INFO L124 PetriNetUnfolderBase]: 4425/7886 cut-off events. [2024-06-27 18:53:50,026 INFO L125 PetriNetUnfolderBase]: For 731182/731182 co-relation queries the response was YES. [2024-06-27 18:53:50,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58567 conditions, 7886 events. 4425/7886 cut-off events. For 731182/731182 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 59212 event pairs, 1617 based on Foata normal form. 2/7670 useless extension candidates. Maximal degree in co-relation 58288. Up to 6173 conditions per place. [2024-06-27 18:53:50,148 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 493 selfloop transitions, 173 changer transitions 0/673 dead transitions. [2024-06-27 18:53:50,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 673 transitions, 12625 flow [2024-06-27 18:53:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:53:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:53:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:53:50,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:53:50,150 INFO L175 Difference]: Start difference. First operand has 571 places, 636 transitions, 10845 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:53:50,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 673 transitions, 12625 flow [2024-06-27 18:53:58,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 673 transitions, 12094 flow, removed 105 selfloop flow, removed 9 redundant places. [2024-06-27 18:53:58,610 INFO L231 Difference]: Finished difference. Result has 573 places, 638 transitions, 10893 flow [2024-06-27 18:53:58,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10314, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=10893, PETRI_PLACES=573, PETRI_TRANSITIONS=638} [2024-06-27 18:53:58,611 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 532 predicate places. [2024-06-27 18:53:58,611 INFO L495 AbstractCegarLoop]: Abstraction has has 573 places, 638 transitions, 10893 flow [2024-06-27 18:53:58,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:58,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:53:58,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:53:58,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-27 18:53:58,612 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:53:58,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:53:58,612 INFO L85 PathProgramCache]: Analyzing trace with hash -848019759, now seen corresponding path program 47 times [2024-06-27 18:53:58,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:53:58,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131115423] [2024-06-27 18:53:58,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:53:58,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:53:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:53:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:53:59,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:53:59,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131115423] [2024-06-27 18:53:59,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131115423] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:53:59,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:53:59,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:53:59,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489145985] [2024-06-27 18:53:59,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:53:59,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:53:59,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:53:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:53:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:53:59,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:53:59,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 573 places, 638 transitions, 10893 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:53:59,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:53:59,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:53:59,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:54:03,032 INFO L124 PetriNetUnfolderBase]: 4509/8053 cut-off events. [2024-06-27 18:54:03,033 INFO L125 PetriNetUnfolderBase]: For 890237/890237 co-relation queries the response was YES. [2024-06-27 18:54:03,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60195 conditions, 8053 events. 4509/8053 cut-off events. For 890237/890237 co-relation queries the response was YES. Maximal size of possible extension queue 587. Compared 61005 event pairs, 2149 based on Foata normal form. 12/7840 useless extension candidates. Maximal degree in co-relation 59915. Up to 7621 conditions per place. [2024-06-27 18:54:03,164 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 633 selfloop transitions, 27 changer transitions 0/667 dead transitions. [2024-06-27 18:54:03,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 667 transitions, 12617 flow [2024-06-27 18:54:03,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:54:03,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:54:03,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 162 transitions. [2024-06-27 18:54:03,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39803439803439805 [2024-06-27 18:54:03,166 INFO L175 Difference]: Start difference. First operand has 573 places, 638 transitions, 10893 flow. Second operand 11 states and 162 transitions. [2024-06-27 18:54:03,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 667 transitions, 12617 flow Killed by 15