./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix041_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/mix041_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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/mix041_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 18:33:21,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:33:21,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:33:21,105 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:33:21,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:33:21,159 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:33:21,160 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:33:21,160 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:33:21,160 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:33:21,163 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:33:21,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:33:21,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:33:21,164 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:33:21,166 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:33:21,166 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:33:21,166 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:33:21,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:33:21,166 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:33:21,167 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:33:21,167 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:33:21,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:33:21,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:33:21,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:33:21,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:33:21,168 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:33:21,168 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:33:21,168 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:33:21,168 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:33:21,169 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:33:21,169 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:33:21,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:33:21,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:33:21,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:33:21,170 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:33:21,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:33:21,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:33:21,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:33:21,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:33:21,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:33:21,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:33:21,172 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:33:21,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:33:21,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:33:21,172 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:33:21,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:33:21,402 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:33:21,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:33:21,406 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:33:21,406 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:33:21,407 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 18:33:21,539 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:33:21,540 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:33:21,540 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:33:22,636 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:33:22,886 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:33:22,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:33:22,899 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1506ddac/877ceff395104cec9aaf635a7c405af9/FLAG5627a9192 [2024-06-27 18:33:23,244 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1506ddac/877ceff395104cec9aaf635a7c405af9 [2024-06-27 18:33:23,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:33:23,246 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:33:23,248 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:33:23,248 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:33:23,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:33:23,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:21" (1/2) ... [2024-06-27 18:33:23,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1794a85c and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:33:23, skipping insertion in model container [2024-06-27 18:33:23,255 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:21" (1/2) ... [2024-06-27 18:33:23,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f5b979d and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:33:23, skipping insertion in model container [2024-06-27 18:33:23,257 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:33:23" (2/2) ... [2024-06-27 18:33:23,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1794a85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23, skipping insertion in model container [2024-06-27 18:33:23,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:33:23" (2/2) ... [2024-06-27 18:33:23,258 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:33:23,306 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:33:23,307 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 18:33:23,308 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || x$read_delayed_var == 0) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)) [2024-06-27 18:33:23,308 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:33:23,308 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-27 18:33:23,348 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:33:23,495 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/mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i[983,996] [2024-06-27 18:33:23,709 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:33:23,718 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:33:23,775 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/mix041_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 18:33:23,852 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:33:23,912 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:33:23,912 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23 WrapperNode [2024-06-27 18:33:23,912 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:33:23,913 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:33:23,913 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:33:23,913 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:33:23,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,928 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,962 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 135 [2024-06-27 18:33:23,963 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:33:23,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:33:23,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:33:23,964 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:33:23,972 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,974 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,984 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 18:33:23,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,990 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,991 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,993 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,993 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:23,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:33:23,996 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:33:23,996 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:33:23,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:33:23,997 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (1/1) ... [2024-06-27 18:33:24,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:33:24,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:33:24,046 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 18:33:24,050 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 18:33:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:33:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:33:24,072 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:33:24,072 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:33:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:33:24,073 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:33:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:33:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:33:24,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:33:24,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:33:24,074 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 18:33:24,177 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:33:24,179 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:33:24,371 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:33:24,371 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:33:24,468 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:33:24,469 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:33:24,469 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:33:24 BoogieIcfgContainer [2024-06-27 18:33:24,470 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:33:24,472 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:33:24,472 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:33:24,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:33:24,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:33:21" (1/4) ... [2024-06-27 18:33:24,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf197f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:33:24, skipping insertion in model container [2024-06-27 18:33:24,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:33:23" (2/4) ... [2024-06-27 18:33:24,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf197f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:33:24, skipping insertion in model container [2024-06-27 18:33:24,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:33:23" (3/4) ... [2024-06-27 18:33:24,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbf197f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:33:24, skipping insertion in model container [2024-06-27 18:33:24,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:33:24" (4/4) ... [2024-06-27 18:33:24,480 INFO L112 eAbstractionObserver]: Analyzing ICFG mix041_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 18:33:24,493 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:33:24,494 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:33:24,494 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:33:24,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:33:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:33:24,593 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2024-06-27 18:33:24,593 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:33:24,596 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 18:33:24,597 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 37 transitions, 82 flow [2024-06-27 18:33:24,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 35 transitions, 76 flow [2024-06-27 18:33:24,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:33:24,621 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;@70a7e450, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:33:24,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:33:24,624 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:33:24,624 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:33:24,624 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:33:24,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:24,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:33:24,626 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 18:33:24,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:24,654 INFO L85 PathProgramCache]: Analyzing trace with hash 313150133, now seen corresponding path program 1 times [2024-06-27 18:33:24,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:24,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603408175] [2024-06-27 18:33:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:24,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:24,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:25,387 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 18:33:25,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:25,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603408175] [2024-06-27 18:33:25,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603408175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:25,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:25,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:33:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263640955] [2024-06-27 18:33:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:25,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:33:25,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:25,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:33:25,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:33:25,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-06-27 18:33:25,465 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 18:33:25,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:25,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-06-27 18:33:25,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:25,726 INFO L124 PetriNetUnfolderBase]: 543/1069 cut-off events. [2024-06-27 18:33:25,726 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:33:25,731 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 18:33:25,736 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 32 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-27 18:33:25,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 173 flow [2024-06-27 18:33:25,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:33:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:33:25,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-06-27 18:33:25,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6846846846846847 [2024-06-27 18:33:25,748 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 76 flow. Second operand 3 states and 76 transitions. [2024-06-27 18:33:25,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 173 flow [2024-06-27 18:33:25,751 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 18:33:25,753 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 100 flow [2024-06-27 18:33:25,754 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 18:33:25,756 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2024-06-27 18:33:25,756 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 100 flow [2024-06-27 18:33:25,757 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 18:33:25,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:25,757 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:25,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:33:25,758 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 18:33:25,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:25,758 INFO L85 PathProgramCache]: Analyzing trace with hash 289967898, now seen corresponding path program 1 times [2024-06-27 18:33:25,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:25,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825647673] [2024-06-27 18:33:25,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:25,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:25,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:26,284 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 18:33:26,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:26,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825647673] [2024-06-27 18:33:26,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825647673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:26,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:26,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:33:26,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323796919] [2024-06-27 18:33:26,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:26,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:33:26,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:26,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:33:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:33:26,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:33:26,320 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 18:33:26,320 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:26,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:33:26,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:26,472 INFO L124 PetriNetUnfolderBase]: 621/1091 cut-off events. [2024-06-27 18:33:26,472 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2024-06-27 18:33:26,473 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 18:33:26,476 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 42 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2024-06-27 18:33:26,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 58 transitions, 248 flow [2024-06-27 18:33:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:33:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:33:26,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-06-27 18:33:26,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6418918918918919 [2024-06-27 18:33:26,478 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 100 flow. Second operand 4 states and 95 transitions. [2024-06-27 18:33:26,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 58 transitions, 248 flow [2024-06-27 18:33:26,479 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 18:33:26,480 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 134 flow [2024-06-27 18:33:26,480 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 18:33:26,481 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2024-06-27 18:33:26,481 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 134 flow [2024-06-27 18:33:26,481 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 18:33:26,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:26,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:26,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:33:26,482 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 18:33:26,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash 399071120, now seen corresponding path program 1 times [2024-06-27 18:33:26,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:26,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731043280] [2024-06-27 18:33:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:26,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:26,885 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 18:33:26,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:26,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731043280] [2024-06-27 18:33:26,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731043280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:26,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:26,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:33:26,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856749071] [2024-06-27 18:33:26,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:26,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:33:26,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:26,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:33:26,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:33:26,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:33:26,921 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 18:33:26,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:26,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:33:26,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:27,087 INFO L124 PetriNetUnfolderBase]: 613/1171 cut-off events. [2024-06-27 18:33:27,087 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2024-06-27 18:33:27,089 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 18:33:27,092 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 49 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2024-06-27 18:33:27,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 360 flow [2024-06-27 18:33:27,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:33:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:33:27,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 113 transitions. [2024-06-27 18:33:27,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6108108108108108 [2024-06-27 18:33:27,094 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 134 flow. Second operand 5 states and 113 transitions. [2024-06-27 18:33:27,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 360 flow [2024-06-27 18:33:27,095 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 18:33:27,097 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 231 flow [2024-06-27 18:33:27,097 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 18:33:27,097 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 9 predicate places. [2024-06-27 18:33:27,097 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 231 flow [2024-06-27 18:33:27,098 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 18:33:27,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:27,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:27,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:33:27,098 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 18:33:27,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:27,099 INFO L85 PathProgramCache]: Analyzing trace with hash 386992459, now seen corresponding path program 1 times [2024-06-27 18:33:27,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:27,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535421561] [2024-06-27 18:33:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:27,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:27,165 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 18:33:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535421561] [2024-06-27 18:33:27,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535421561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:27,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:27,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:33:27,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873720224] [2024-06-27 18:33:27,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:27,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:33:27,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:27,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:33:27,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:33:27,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 37 [2024-06-27 18:33:27,168 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 18:33:27,168 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:27,168 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 37 [2024-06-27 18:33:27,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:27,231 INFO L124 PetriNetUnfolderBase]: 191/559 cut-off events. [2024-06-27 18:33:27,231 INFO L125 PetriNetUnfolderBase]: For 288/314 co-relation queries the response was YES. [2024-06-27 18:33:27,232 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 18:33:27,234 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 25 selfloop transitions, 7 changer transitions 0/54 dead transitions. [2024-06-27 18:33:27,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 54 transitions, 270 flow [2024-06-27 18:33:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:33:27,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:33:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 82 transitions. [2024-06-27 18:33:27,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7387387387387387 [2024-06-27 18:33:27,235 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 231 flow. Second operand 3 states and 82 transitions. [2024-06-27 18:33:27,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 54 transitions, 270 flow [2024-06-27 18:33:27,236 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 18:33:27,237 INFO L231 Difference]: Finished difference. Result has 51 places, 46 transitions, 198 flow [2024-06-27 18:33:27,237 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 18:33:27,238 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-27 18:33:27,238 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 46 transitions, 198 flow [2024-06-27 18:33:27,238 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 18:33:27,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:27,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:27,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:33:27,239 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 18:33:27,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:27,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1657047827, now seen corresponding path program 1 times [2024-06-27 18:33:27,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:27,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306369786] [2024-06-27 18:33:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:27,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:27,928 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 18:33:27,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:27,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306369786] [2024-06-27 18:33:27,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306369786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:27,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:27,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:33:27,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945901702] [2024-06-27 18:33:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:27,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:33:27,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:33:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:33:27,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-06-27 18:33:27,976 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 18:33:27,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:27,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-06-27 18:33:27,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:28,219 INFO L124 PetriNetUnfolderBase]: 531/1016 cut-off events. [2024-06-27 18:33:28,220 INFO L125 PetriNetUnfolderBase]: For 732/732 co-relation queries the response was YES. [2024-06-27 18:33:28,221 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 18:33:28,224 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 48 selfloop transitions, 12 changer transitions 1/70 dead transitions. [2024-06-27 18:33:28,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 378 flow [2024-06-27 18:33:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:33:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:33:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-27 18:33:28,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630630630630631 [2024-06-27 18:33:28,226 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 198 flow. Second operand 6 states and 125 transitions. [2024-06-27 18:33:28,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 378 flow [2024-06-27 18:33:28,228 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 18:33:28,229 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 219 flow [2024-06-27 18:33:28,229 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 18:33:28,229 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2024-06-27 18:33:28,230 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 219 flow [2024-06-27 18:33:28,230 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 18:33:28,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:28,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:28,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:33:28,230 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 18:33:28,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:28,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1762631065, now seen corresponding path program 1 times [2024-06-27 18:33:28,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:28,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591288122] [2024-06-27 18:33:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:28,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:28,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:28,583 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 18:33:28,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:28,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591288122] [2024-06-27 18:33:28,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591288122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:28,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:28,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:33:28,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568305435] [2024-06-27 18:33:28,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:28,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:33:28,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:33:28,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:33:28,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 37 [2024-06-27 18:33:28,646 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 18:33:28,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:28,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 37 [2024-06-27 18:33:28,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:28,840 INFO L124 PetriNetUnfolderBase]: 452/897 cut-off events. [2024-06-27 18:33:28,841 INFO L125 PetriNetUnfolderBase]: For 793/793 co-relation queries the response was YES. [2024-06-27 18:33:28,842 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 18:33:28,845 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 48 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2024-06-27 18:33:28,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 63 transitions, 388 flow [2024-06-27 18:33:28,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:33:28,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:33:28,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 18:33:28,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 18:33:28,846 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 219 flow. Second operand 5 states and 91 transitions. [2024-06-27 18:33:28,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 63 transitions, 388 flow [2024-06-27 18:33:28,848 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 18:33:28,849 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 248 flow [2024-06-27 18:33:28,849 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 18:33:28,849 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 14 predicate places. [2024-06-27 18:33:28,849 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 248 flow [2024-06-27 18:33:28,850 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 18:33:28,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:28,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:28,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:33:28,850 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 18:33:28,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1193013464, now seen corresponding path program 1 times [2024-06-27 18:33:28,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:28,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657567644] [2024-06-27 18:33:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:28,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:29,271 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 18:33:29,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:29,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657567644] [2024-06-27 18:33:29,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657567644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:29,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:29,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:33:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167120737] [2024-06-27 18:33:29,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:29,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:33:29,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:33:29,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:33:29,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:29,311 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 18:33:29,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:29,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:29,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:29,612 INFO L124 PetriNetUnfolderBase]: 537/1034 cut-off events. [2024-06-27 18:33:29,612 INFO L125 PetriNetUnfolderBase]: For 1074/1074 co-relation queries the response was YES. [2024-06-27 18:33:29,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2734 conditions, 1034 events. 537/1034 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 5390 event pairs, 223 based on Foata normal form. 1/997 useless extension candidates. Maximal degree in co-relation 2710. Up to 860 conditions per place. [2024-06-27 18:33:29,632 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 55 selfloop transitions, 9 changer transitions 0/71 dead transitions. [2024-06-27 18:33:29,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 71 transitions, 434 flow [2024-06-27 18:33:29,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:33:29,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:33:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-27 18:33:29,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:33:29,634 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 248 flow. Second operand 6 states and 104 transitions. [2024-06-27 18:33:29,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 71 transitions, 434 flow [2024-06-27 18:33:29,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 71 transitions, 425 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:33:29,636 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 274 flow [2024-06-27 18:33:29,637 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=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-06-27 18:33:29,637 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 18:33:29,637 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 274 flow [2024-06-27 18:33:29,637 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 18:33:29,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:29,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:29,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:33:29,638 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 18:33:29,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:29,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1989702136, now seen corresponding path program 1 times [2024-06-27 18:33:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:29,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4301653] [2024-06-27 18:33:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:29,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:30,254 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 18:33:30,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:30,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4301653] [2024-06-27 18:33:30,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4301653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:30,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:30,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:33:30,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797015669] [2024-06-27 18:33:30,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:30,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:33:30,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:30,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:33:30,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:33:30,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:30,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 274 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 18:33:30,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:30,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:30,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:30,549 INFO L124 PetriNetUnfolderBase]: 593/1135 cut-off events. [2024-06-27 18:33:30,549 INFO L125 PetriNetUnfolderBase]: For 1685/1685 co-relation queries the response was YES. [2024-06-27 18:33:30,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 1135 events. 593/1135 cut-off events. For 1685/1685 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6043 event pairs, 241 based on Foata normal form. 1/1089 useless extension candidates. Maximal degree in co-relation 3111. Up to 939 conditions per place. [2024-06-27 18:33:30,554 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 58 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-27 18:33:30,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 76 transitions, 483 flow [2024-06-27 18:33:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:33:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:33:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 18:33:30,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:33:30,556 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 274 flow. Second operand 6 states and 105 transitions. [2024-06-27 18:33:30,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 76 transitions, 483 flow [2024-06-27 18:33:30,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 464 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:30,561 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 321 flow [2024-06-27 18:33:30,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-06-27 18:33:30,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 21 predicate places. [2024-06-27 18:33:30,563 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 321 flow [2024-06-27 18:33:30,564 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 18:33:30,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:30,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:30,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:33:30,564 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 18:33:30,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:30,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1449650506, now seen corresponding path program 2 times [2024-06-27 18:33:30,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:30,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489208787] [2024-06-27 18:33:30,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:30,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:30,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:30,985 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 18:33:30,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:30,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489208787] [2024-06-27 18:33:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489208787] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:30,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:30,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:33:30,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086005421] [2024-06-27 18:33:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:30,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:33:30,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:33:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:33:31,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:31,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 321 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 18:33:31,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:31,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:31,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:31,289 INFO L124 PetriNetUnfolderBase]: 573/1091 cut-off events. [2024-06-27 18:33:31,289 INFO L125 PetriNetUnfolderBase]: For 2231/2243 co-relation queries the response was YES. [2024-06-27 18:33:31,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 1091 events. 573/1091 cut-off events. For 2231/2243 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5767 event pairs, 218 based on Foata normal form. 9/1061 useless extension candidates. Maximal degree in co-relation 3218. Up to 887 conditions per place. [2024-06-27 18:33:31,296 INFO L140 encePairwiseOnDemand]: 29/37 looper letters, 57 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-06-27 18:33:31,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 527 flow [2024-06-27 18:33:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:33:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:33:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 18:33:31,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:33:31,297 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 321 flow. Second operand 6 states and 106 transitions. [2024-06-27 18:33:31,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 527 flow [2024-06-27 18:33:31,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 78 transitions, 508 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:31,300 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 349 flow [2024-06-27 18:33:31,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2024-06-27 18:33:31,301 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 24 predicate places. [2024-06-27 18:33:31,301 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 349 flow [2024-06-27 18:33:31,302 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 18:33:31,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:31,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:31,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:33:31,302 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 18:33:31,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1671286618, now seen corresponding path program 1 times [2024-06-27 18:33:31,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:31,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160256] [2024-06-27 18:33:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:31,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:31,802 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 18:33:31,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:31,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160256] [2024-06-27 18:33:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:31,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:31,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320316443] [2024-06-27 18:33:31,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:31,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:31,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:31,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 349 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 18:33:31,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:31,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:31,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:32,137 INFO L124 PetriNetUnfolderBase]: 556/1066 cut-off events. [2024-06-27 18:33:32,138 INFO L125 PetriNetUnfolderBase]: For 2276/2276 co-relation queries the response was YES. [2024-06-27 18:33:32,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3291 conditions, 1066 events. 556/1066 cut-off events. For 2276/2276 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 5630 event pairs, 214 based on Foata normal form. 1/1028 useless extension candidates. Maximal degree in co-relation 3262. Up to 877 conditions per place. [2024-06-27 18:33:32,144 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 68 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2024-06-27 18:33:32,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 591 flow [2024-06-27 18:33:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 18:33:32,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671814671814672 [2024-06-27 18:33:32,145 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 349 flow. Second operand 7 states and 121 transitions. [2024-06-27 18:33:32,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 591 flow [2024-06-27 18:33:32,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 86 transitions, 560 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:32,149 INFO L231 Difference]: Finished difference. Result has 68 places, 62 transitions, 359 flow [2024-06-27 18:33:32,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=359, PETRI_PLACES=68, PETRI_TRANSITIONS=62} [2024-06-27 18:33:32,150 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 27 predicate places. [2024-06-27 18:33:32,150 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 62 transitions, 359 flow [2024-06-27 18:33:32,150 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 18:33:32,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:32,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:32,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:33:32,151 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 18:33:32,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash -277910190, now seen corresponding path program 1 times [2024-06-27 18:33:32,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071928289] [2024-06-27 18:33:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:32,532 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 18:33:32,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:32,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071928289] [2024-06-27 18:33:32,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071928289] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:32,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:32,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:32,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814901916] [2024-06-27 18:33:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:32,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:32,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:32,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:32,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:32,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 62 transitions, 359 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 18:33:32,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:32,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:32,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:32,900 INFO L124 PetriNetUnfolderBase]: 619/1181 cut-off events. [2024-06-27 18:33:32,900 INFO L125 PetriNetUnfolderBase]: For 3177/3180 co-relation queries the response was YES. [2024-06-27 18:33:32,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3734 conditions, 1181 events. 619/1181 cut-off events. For 3177/3180 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6333 event pairs, 189 based on Foata normal form. 5/1137 useless extension candidates. Maximal degree in co-relation 3704. Up to 937 conditions per place. [2024-06-27 18:33:32,906 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 64 selfloop transitions, 22 changer transitions 0/94 dead transitions. [2024-06-27 18:33:32,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 631 flow [2024-06-27 18:33:32,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:32,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:32,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 18:33:32,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 18:33:32,908 INFO L175 Difference]: Start difference. First operand has 68 places, 62 transitions, 359 flow. Second operand 7 states and 128 transitions. [2024-06-27 18:33:32,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 631 flow [2024-06-27 18:33:32,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 94 transitions, 606 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:32,912 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 436 flow [2024-06-27 18:33:32,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=436, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2024-06-27 18:33:32,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 30 predicate places. [2024-06-27 18:33:32,913 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 436 flow [2024-06-27 18:33:32,913 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 18:33:32,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:32,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:32,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:33:32,913 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 18:33:32,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:32,914 INFO L85 PathProgramCache]: Analyzing trace with hash -448606823, now seen corresponding path program 1 times [2024-06-27 18:33:32,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:32,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044940329] [2024-06-27 18:33:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:32,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:33,299 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 18:33:33,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:33,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044940329] [2024-06-27 18:33:33,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044940329] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:33,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:33,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:33,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889497812] [2024-06-27 18:33:33,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:33,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:33,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:33,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:33,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:33,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:33,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 436 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 18:33:33,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:33,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:33,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:33,686 INFO L124 PetriNetUnfolderBase]: 676/1244 cut-off events. [2024-06-27 18:33:33,686 INFO L125 PetriNetUnfolderBase]: For 3879/3879 co-relation queries the response was YES. [2024-06-27 18:33:33,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4292 conditions, 1244 events. 676/1244 cut-off events. For 3879/3879 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6413 event pairs, 202 based on Foata normal form. 1/1200 useless extension candidates. Maximal degree in co-relation 4260. Up to 1065 conditions per place. [2024-06-27 18:33:33,693 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 77 selfloop transitions, 12 changer transitions 0/95 dead transitions. [2024-06-27 18:33:33,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 95 transitions, 702 flow [2024-06-27 18:33:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:33,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 18:33:33,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44787644787644787 [2024-06-27 18:33:33,695 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 436 flow. Second operand 7 states and 116 transitions. [2024-06-27 18:33:33,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 95 transitions, 702 flow [2024-06-27 18:33:33,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 95 transitions, 664 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:33,699 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 443 flow [2024-06-27 18:33:33,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=398, 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=443, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-06-27 18:33:33,700 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-27 18:33:33,701 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 443 flow [2024-06-27 18:33:33,701 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 18:33:33,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:33,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:33,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:33:33,702 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 18:33:33,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:33,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1551225486, now seen corresponding path program 2 times [2024-06-27 18:33:33,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:33,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096873031] [2024-06-27 18:33:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:33,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:34,177 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 18:33:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:34,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096873031] [2024-06-27 18:33:34,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096873031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:34,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:34,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:34,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104918267] [2024-06-27 18:33:34,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:34,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:34,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:34,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:34,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 443 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 18:33:34,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:34,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:34,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:34,559 INFO L124 PetriNetUnfolderBase]: 672/1243 cut-off events. [2024-06-27 18:33:34,559 INFO L125 PetriNetUnfolderBase]: For 4747/4750 co-relation queries the response was YES. [2024-06-27 18:33:34,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4449 conditions, 1243 events. 672/1243 cut-off events. For 4747/4750 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6513 event pairs, 176 based on Foata normal form. 5/1206 useless extension candidates. Maximal degree in co-relation 4416. Up to 968 conditions per place. [2024-06-27 18:33:34,567 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 69 selfloop transitions, 27 changer transitions 0/105 dead transitions. [2024-06-27 18:33:34,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 105 transitions, 806 flow [2024-06-27 18:33:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:34,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 18:33:34,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942084942084942 [2024-06-27 18:33:34,569 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 443 flow. Second operand 7 states and 128 transitions. [2024-06-27 18:33:34,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 105 transitions, 806 flow [2024-06-27 18:33:34,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 105 transitions, 774 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:34,573 INFO L231 Difference]: Finished difference. Result has 78 places, 80 transitions, 568 flow [2024-06-27 18:33:34,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=568, PETRI_PLACES=78, PETRI_TRANSITIONS=80} [2024-06-27 18:33:34,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-27 18:33:34,574 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 80 transitions, 568 flow [2024-06-27 18:33:34,574 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 18:33:34,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:34,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:34,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:33:34,575 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 18:33:34,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:34,575 INFO L85 PathProgramCache]: Analyzing trace with hash -443936580, now seen corresponding path program 3 times [2024-06-27 18:33:34,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:34,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282382106] [2024-06-27 18:33:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:35,052 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 18:33:35,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:35,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282382106] [2024-06-27 18:33:35,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282382106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:35,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:35,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:35,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973078849] [2024-06-27 18:33:35,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:35,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:35,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:35,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:35,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:35,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:35,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 80 transitions, 568 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 18:33:35,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:35,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:35,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:35,407 INFO L124 PetriNetUnfolderBase]: 659/1256 cut-off events. [2024-06-27 18:33:35,407 INFO L125 PetriNetUnfolderBase]: For 6107/6112 co-relation queries the response was YES. [2024-06-27 18:33:35,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4718 conditions, 1256 events. 659/1256 cut-off events. For 6107/6112 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6733 event pairs, 172 based on Foata normal form. 4/1209 useless extension candidates. Maximal degree in co-relation 4683. Up to 912 conditions per place. [2024-06-27 18:33:35,434 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 71 selfloop transitions, 36 changer transitions 0/116 dead transitions. [2024-06-27 18:33:35,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 116 transitions, 1000 flow [2024-06-27 18:33:35,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:35,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:35,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 18:33:35,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-27 18:33:35,436 INFO L175 Difference]: Start difference. First operand has 78 places, 80 transitions, 568 flow. Second operand 7 states and 127 transitions. [2024-06-27 18:33:35,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 116 transitions, 1000 flow [2024-06-27 18:33:35,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 116 transitions, 942 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:35,443 INFO L231 Difference]: Finished difference. Result has 83 places, 93 transitions, 751 flow [2024-06-27 18:33:35,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=751, PETRI_PLACES=83, PETRI_TRANSITIONS=93} [2024-06-27 18:33:35,443 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-27 18:33:35,443 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 93 transitions, 751 flow [2024-06-27 18:33:35,444 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 18:33:35,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:35,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:35,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:33:35,444 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 18:33:35,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash -443936363, now seen corresponding path program 2 times [2024-06-27 18:33:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:35,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644394742] [2024-06-27 18:33:35,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:35,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:36,035 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 18:33:36,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:36,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644394742] [2024-06-27 18:33:36,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644394742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:36,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:36,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:36,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169464239] [2024-06-27 18:33:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:36,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:36,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:36,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 93 transitions, 751 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 18:33:36,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:36,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:36,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:36,281 INFO L124 PetriNetUnfolderBase]: 726/1328 cut-off events. [2024-06-27 18:33:36,281 INFO L125 PetriNetUnfolderBase]: For 7342/7357 co-relation queries the response was YES. [2024-06-27 18:33:36,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5427 conditions, 1328 events. 726/1328 cut-off events. For 7342/7357 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6878 event pairs, 182 based on Foata normal form. 11/1291 useless extension candidates. Maximal degree in co-relation 5389. Up to 1078 conditions per place. [2024-06-27 18:33:36,288 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 96 selfloop transitions, 23 changer transitions 0/125 dead transitions. [2024-06-27 18:33:36,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 125 transitions, 1183 flow [2024-06-27 18:33:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:36,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 18:33:36,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46332046332046334 [2024-06-27 18:33:36,289 INFO L175 Difference]: Start difference. First operand has 83 places, 93 transitions, 751 flow. Second operand 7 states and 120 transitions. [2024-06-27 18:33:36,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 125 transitions, 1183 flow [2024-06-27 18:33:36,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 125 transitions, 1119 flow, removed 25 selfloop flow, removed 2 redundant places. [2024-06-27 18:33:36,299 INFO L231 Difference]: Finished difference. Result has 88 places, 97 transitions, 789 flow [2024-06-27 18:33:36,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=789, PETRI_PLACES=88, PETRI_TRANSITIONS=97} [2024-06-27 18:33:36,300 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 47 predicate places. [2024-06-27 18:33:36,300 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 97 transitions, 789 flow [2024-06-27 18:33:36,300 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 18:33:36,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:36,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:36,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:33:36,301 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 18:33:36,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash -443928923, now seen corresponding path program 3 times [2024-06-27 18:33:36,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:36,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236861099] [2024-06-27 18:33:36,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:36,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:36,734 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 18:33:36,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:36,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236861099] [2024-06-27 18:33:36,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236861099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:36,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:36,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:33:36,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244369619] [2024-06-27 18:33:36,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:36,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:33:36,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:36,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:33:36,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:33:36,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:36,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 97 transitions, 789 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 18:33:36,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:36,781 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:36,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:37,061 INFO L124 PetriNetUnfolderBase]: 724/1331 cut-off events. [2024-06-27 18:33:37,061 INFO L125 PetriNetUnfolderBase]: For 7923/7938 co-relation queries the response was YES. [2024-06-27 18:33:37,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5556 conditions, 1331 events. 724/1331 cut-off events. For 7923/7938 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6980 event pairs, 179 based on Foata normal form. 11/1292 useless extension candidates. Maximal degree in co-relation 5516. Up to 1076 conditions per place. [2024-06-27 18:33:37,068 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 92 selfloop transitions, 25 changer transitions 0/123 dead transitions. [2024-06-27 18:33:37,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 123 transitions, 1133 flow [2024-06-27 18:33:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:37,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:37,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 18:33:37,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4555984555984556 [2024-06-27 18:33:37,069 INFO L175 Difference]: Start difference. First operand has 88 places, 97 transitions, 789 flow. Second operand 7 states and 118 transitions. [2024-06-27 18:33:37,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 123 transitions, 1133 flow [2024-06-27 18:33:37,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 123 transitions, 1087 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:37,080 INFO L231 Difference]: Finished difference. Result has 92 places, 97 transitions, 798 flow [2024-06-27 18:33:37,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=743, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=798, PETRI_PLACES=92, PETRI_TRANSITIONS=97} [2024-06-27 18:33:37,080 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 51 predicate places. [2024-06-27 18:33:37,080 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 97 transitions, 798 flow [2024-06-27 18:33:37,080 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 18:33:37,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:37,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:37,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:33:37,081 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 18:33:37,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:37,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1455458761, now seen corresponding path program 1 times [2024-06-27 18:33:37,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:37,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194166983] [2024-06-27 18:33:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:37,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:37,685 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 18:33:37,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:37,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194166983] [2024-06-27 18:33:37,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194166983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:37,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:37,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:37,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139785578] [2024-06-27 18:33:37,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:37,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:37,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:37,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:37,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:37,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:37,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 97 transitions, 798 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 18:33:37,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:37,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:37,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:38,147 INFO L124 PetriNetUnfolderBase]: 763/1425 cut-off events. [2024-06-27 18:33:38,147 INFO L125 PetriNetUnfolderBase]: For 8804/8811 co-relation queries the response was YES. [2024-06-27 18:33:38,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6080 conditions, 1425 events. 763/1425 cut-off events. For 8804/8811 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7695 event pairs, 185 based on Foata normal form. 4/1375 useless extension candidates. Maximal degree in co-relation 6038. Up to 1096 conditions per place. [2024-06-27 18:33:38,156 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 102 selfloop transitions, 39 changer transitions 0/152 dead transitions. [2024-06-27 18:33:38,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 152 transitions, 1423 flow [2024-06-27 18:33:38,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:38,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:38,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:33:38,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49324324324324326 [2024-06-27 18:33:38,158 INFO L175 Difference]: Start difference. First operand has 92 places, 97 transitions, 798 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:33:38,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 152 transitions, 1423 flow [2024-06-27 18:33:38,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 152 transitions, 1357 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:38,177 INFO L231 Difference]: Finished difference. Result has 97 places, 121 transitions, 1115 flow [2024-06-27 18:33:38,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1115, PETRI_PLACES=97, PETRI_TRANSITIONS=121} [2024-06-27 18:33:38,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-27 18:33:38,177 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 121 transitions, 1115 flow [2024-06-27 18:33:38,178 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 18:33:38,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:38,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:38,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:33:38,178 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 18:33:38,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 839512215, now seen corresponding path program 2 times [2024-06-27 18:33:38,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9778178] [2024-06-27 18:33:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:38,988 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 18:33:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9778178] [2024-06-27 18:33:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9778178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:38,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:38,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341007266] [2024-06-27 18:33:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:38,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:38,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:39,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:39,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 121 transitions, 1115 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 18:33:39,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:39,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:39,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:39,504 INFO L124 PetriNetUnfolderBase]: 759/1411 cut-off events. [2024-06-27 18:33:39,504 INFO L125 PetriNetUnfolderBase]: For 9678/9681 co-relation queries the response was YES. [2024-06-27 18:33:39,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6323 conditions, 1411 events. 759/1411 cut-off events. For 9678/9681 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7531 event pairs, 188 based on Foata normal form. 4/1366 useless extension candidates. Maximal degree in co-relation 6277. Up to 1050 conditions per place. [2024-06-27 18:33:39,514 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 94 selfloop transitions, 43 changer transitions 0/148 dead transitions. [2024-06-27 18:33:39,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 148 transitions, 1515 flow [2024-06-27 18:33:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:33:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:33:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 18:33:39,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49034749034749037 [2024-06-27 18:33:39,517 INFO L175 Difference]: Start difference. First operand has 97 places, 121 transitions, 1115 flow. Second operand 7 states and 127 transitions. [2024-06-27 18:33:39,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 148 transitions, 1515 flow [2024-06-27 18:33:39,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 148 transitions, 1437 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:39,534 INFO L231 Difference]: Finished difference. Result has 101 places, 123 transitions, 1179 flow [2024-06-27 18:33:39,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1179, PETRI_PLACES=101, PETRI_TRANSITIONS=123} [2024-06-27 18:33:39,535 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 60 predicate places. [2024-06-27 18:33:39,535 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 123 transitions, 1179 flow [2024-06-27 18:33:39,535 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 18:33:39,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:39,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:39,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:33:39,536 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 18:33:39,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1025662621, now seen corresponding path program 1 times [2024-06-27 18:33:39,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:39,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634539374] [2024-06-27 18:33:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:39,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:40,067 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 18:33:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:40,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634539374] [2024-06-27 18:33:40,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634539374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:40,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:40,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:40,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457619400] [2024-06-27 18:33:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:40,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:40,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:40,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 123 transitions, 1179 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 18:33:40,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:40,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:40,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:40,531 INFO L124 PetriNetUnfolderBase]: 827/1501 cut-off events. [2024-06-27 18:33:40,531 INFO L125 PetriNetUnfolderBase]: For 11026/11026 co-relation queries the response was YES. [2024-06-27 18:33:40,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6821 conditions, 1501 events. 827/1501 cut-off events. For 11026/11026 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7831 event pairs, 204 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 6774. Up to 1168 conditions per place. [2024-06-27 18:33:40,540 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 107 selfloop transitions, 43 changer transitions 0/156 dead transitions. [2024-06-27 18:33:40,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 156 transitions, 1623 flow [2024-06-27 18:33:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:40,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:33:40,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:33:40,546 INFO L175 Difference]: Start difference. First operand has 101 places, 123 transitions, 1179 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:33:40,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 156 transitions, 1623 flow [2024-06-27 18:33:40,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 156 transitions, 1545 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:40,562 INFO L231 Difference]: Finished difference. Result has 104 places, 126 transitions, 1228 flow [2024-06-27 18:33:40,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1228, PETRI_PLACES=104, PETRI_TRANSITIONS=126} [2024-06-27 18:33:40,563 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-06-27 18:33:40,563 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 126 transitions, 1228 flow [2024-06-27 18:33:40,564 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 18:33:40,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:40,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:40,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:33:40,566 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 18:33:40,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:40,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1021914721, now seen corresponding path program 2 times [2024-06-27 18:33:40,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:40,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102328372] [2024-06-27 18:33:40,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:40,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:41,063 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 18:33:41,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:41,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102328372] [2024-06-27 18:33:41,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102328372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:41,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:41,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:41,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233226193] [2024-06-27 18:33:41,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:41,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:41,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:41,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:41,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 126 transitions, 1228 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 18:33:41,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:41,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:41,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:41,445 INFO L124 PetriNetUnfolderBase]: 887/1588 cut-off events. [2024-06-27 18:33:41,445 INFO L125 PetriNetUnfolderBase]: For 12630/12630 co-relation queries the response was YES. [2024-06-27 18:33:41,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7521 conditions, 1588 events. 887/1588 cut-off events. For 12630/12630 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8343 event pairs, 208 based on Foata normal form. 2/1538 useless extension candidates. Maximal degree in co-relation 7473. Up to 1127 conditions per place. [2024-06-27 18:33:41,454 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 106 selfloop transitions, 56 changer transitions 0/168 dead transitions. [2024-06-27 18:33:41,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 168 transitions, 1864 flow [2024-06-27 18:33:41,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:41,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:33:41,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-06-27 18:33:41,456 INFO L175 Difference]: Start difference. First operand has 104 places, 126 transitions, 1228 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:33:41,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 168 transitions, 1864 flow [2024-06-27 18:33:41,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 168 transitions, 1761 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:41,478 INFO L231 Difference]: Finished difference. Result has 107 places, 138 transitions, 1413 flow [2024-06-27 18:33:41,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1413, PETRI_PLACES=107, PETRI_TRANSITIONS=138} [2024-06-27 18:33:41,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-27 18:33:41,479 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 138 transitions, 1413 flow [2024-06-27 18:33:41,479 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 18:33:41,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:41,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:41,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:33:41,479 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 18:33:41,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:41,480 INFO L85 PathProgramCache]: Analyzing trace with hash 843358199, now seen corresponding path program 1 times [2024-06-27 18:33:41,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:41,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922082288] [2024-06-27 18:33:41,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:41,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:41,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:41,971 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 18:33:41,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:41,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922082288] [2024-06-27 18:33:41,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922082288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:41,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:41,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:41,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210842385] [2024-06-27 18:33:41,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:41,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:41,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:42,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:42,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 138 transitions, 1413 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 18:33:42,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:42,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:42,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:42,375 INFO L124 PetriNetUnfolderBase]: 900/1608 cut-off events. [2024-06-27 18:33:42,375 INFO L125 PetriNetUnfolderBase]: For 14804/14804 co-relation queries the response was YES. [2024-06-27 18:33:42,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7957 conditions, 1608 events. 900/1608 cut-off events. For 14804/14804 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8449 event pairs, 213 based on Foata normal form. 1/1558 useless extension candidates. Maximal degree in co-relation 7907. Up to 1384 conditions per place. [2024-06-27 18:33:42,384 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 145 selfloop transitions, 20 changer transitions 0/171 dead transitions. [2024-06-27 18:33:42,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 171 transitions, 1911 flow [2024-06-27 18:33:42,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:42,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:33:42,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:33:42,385 INFO L175 Difference]: Start difference. First operand has 107 places, 138 transitions, 1413 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:33:42,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 171 transitions, 1911 flow [2024-06-27 18:33:42,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 171 transitions, 1849 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:42,405 INFO L231 Difference]: Finished difference. Result has 112 places, 140 transitions, 1421 flow [2024-06-27 18:33:42,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1351, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1421, PETRI_PLACES=112, PETRI_TRANSITIONS=140} [2024-06-27 18:33:42,405 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 71 predicate places. [2024-06-27 18:33:42,406 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 140 transitions, 1421 flow [2024-06-27 18:33:42,406 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 18:33:42,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:42,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:42,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:33:42,406 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 18:33:42,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:42,407 INFO L85 PathProgramCache]: Analyzing trace with hash 843357951, now seen corresponding path program 3 times [2024-06-27 18:33:42,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:42,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790947938] [2024-06-27 18:33:42,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:42,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:42,888 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 18:33:42,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:42,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790947938] [2024-06-27 18:33:42,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790947938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:42,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:42,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:42,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242581910] [2024-06-27 18:33:42,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:42,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:42,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:42,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:42,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 140 transitions, 1421 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 18:33:42,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:42,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:42,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:43,327 INFO L124 PetriNetUnfolderBase]: 896/1596 cut-off events. [2024-06-27 18:33:43,327 INFO L125 PetriNetUnfolderBase]: For 14993/14993 co-relation queries the response was YES. [2024-06-27 18:33:43,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8014 conditions, 1596 events. 896/1596 cut-off events. For 14993/14993 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8328 event pairs, 203 based on Foata normal form. 2/1548 useless extension candidates. Maximal degree in co-relation 7962. Up to 1144 conditions per place. [2024-06-27 18:33:43,360 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 103 selfloop transitions, 60 changer transitions 0/169 dead transitions. [2024-06-27 18:33:43,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 169 transitions, 1899 flow [2024-06-27 18:33:43,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:43,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:43,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:33:43,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 18:33:43,361 INFO L175 Difference]: Start difference. First operand has 112 places, 140 transitions, 1421 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:33:43,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 169 transitions, 1899 flow [2024-06-27 18:33:43,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 169 transitions, 1827 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:43,383 INFO L231 Difference]: Finished difference. Result has 114 places, 140 transitions, 1476 flow [2024-06-27 18:33:43,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1349, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1476, PETRI_PLACES=114, PETRI_TRANSITIONS=140} [2024-06-27 18:33:43,383 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-27 18:33:43,383 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 140 transitions, 1476 flow [2024-06-27 18:33:43,383 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 18:33:43,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:43,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:43,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:33:43,384 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 18:33:43,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:43,384 INFO L85 PathProgramCache]: Analyzing trace with hash 211075431, now seen corresponding path program 2 times [2024-06-27 18:33:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447060304] [2024-06-27 18:33:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:43,883 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 18:33:43,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:43,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447060304] [2024-06-27 18:33:43,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447060304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:43,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:43,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:43,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955656697] [2024-06-27 18:33:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:43,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:43,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:43,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:43,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 140 transitions, 1476 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 18:33:43,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:43,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:43,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:44,279 INFO L124 PetriNetUnfolderBase]: 929/1633 cut-off events. [2024-06-27 18:33:44,279 INFO L125 PetriNetUnfolderBase]: For 16944/16959 co-relation queries the response was YES. [2024-06-27 18:33:44,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8449 conditions, 1633 events. 929/1633 cut-off events. For 16944/16959 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8488 event pairs, 190 based on Foata normal form. 11/1598 useless extension candidates. Maximal degree in co-relation 8396. Up to 1313 conditions per place. [2024-06-27 18:33:44,291 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 144 selfloop transitions, 34 changer transitions 0/184 dead transitions. [2024-06-27 18:33:44,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 184 transitions, 2192 flow [2024-06-27 18:33:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:44,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:33:44,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:33:44,292 INFO L175 Difference]: Start difference. First operand has 114 places, 140 transitions, 1476 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:33:44,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 184 transitions, 2192 flow [2024-06-27 18:33:44,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 184 transitions, 2065 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:44,316 INFO L231 Difference]: Finished difference. Result has 117 places, 147 transitions, 1526 flow [2024-06-27 18:33:44,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1526, PETRI_PLACES=117, PETRI_TRANSITIONS=147} [2024-06-27 18:33:44,316 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 76 predicate places. [2024-06-27 18:33:44,317 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 147 transitions, 1526 flow [2024-06-27 18:33:44,317 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 18:33:44,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:44,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:44,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:33:44,317 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 18:33:44,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:44,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1536406177, now seen corresponding path program 4 times [2024-06-27 18:33:44,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:44,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517743007] [2024-06-27 18:33:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:44,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:44,801 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 18:33:44,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:44,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517743007] [2024-06-27 18:33:44,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517743007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:44,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:44,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542393211] [2024-06-27 18:33:44,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:44,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:44,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:44,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:44,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 147 transitions, 1526 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 18:33:44,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:44,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:44,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:45,175 INFO L124 PetriNetUnfolderBase]: 951/1699 cut-off events. [2024-06-27 18:33:45,175 INFO L125 PetriNetUnfolderBase]: For 18337/18343 co-relation queries the response was YES. [2024-06-27 18:33:45,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8819 conditions, 1699 events. 951/1699 cut-off events. For 18337/18343 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9090 event pairs, 175 based on Foata normal form. 2/1641 useless extension candidates. Maximal degree in co-relation 8764. Up to 1109 conditions per place. [2024-06-27 18:33:45,185 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 106 selfloop transitions, 80 changer transitions 0/192 dead transitions. [2024-06-27 18:33:45,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 192 transitions, 2264 flow [2024-06-27 18:33:45,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:33:45,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46959459459459457 [2024-06-27 18:33:45,186 INFO L175 Difference]: Start difference. First operand has 117 places, 147 transitions, 1526 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:33:45,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 192 transitions, 2264 flow [2024-06-27 18:33:45,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 192 transitions, 2211 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:45,218 INFO L231 Difference]: Finished difference. Result has 124 places, 162 transitions, 1875 flow [2024-06-27 18:33:45,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1875, PETRI_PLACES=124, PETRI_TRANSITIONS=162} [2024-06-27 18:33:45,218 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-27 18:33:45,219 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 162 transitions, 1875 flow [2024-06-27 18:33:45,219 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 18:33:45,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:45,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:45,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:33:45,219 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 18:33:45,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:45,220 INFO L85 PathProgramCache]: Analyzing trace with hash 202800973, now seen corresponding path program 5 times [2024-06-27 18:33:45,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:45,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219323634] [2024-06-27 18:33:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:45,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:45,701 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 18:33:45,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:45,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219323634] [2024-06-27 18:33:45,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219323634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:45,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:45,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:45,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243990109] [2024-06-27 18:33:45,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:45,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:45,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:45,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:45,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:45,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:45,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 162 transitions, 1875 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 18:33:45,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:45,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:45,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:46,116 INFO L124 PetriNetUnfolderBase]: 971/1732 cut-off events. [2024-06-27 18:33:46,117 INFO L125 PetriNetUnfolderBase]: For 21057/21063 co-relation queries the response was YES. [2024-06-27 18:33:46,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9621 conditions, 1732 events. 971/1732 cut-off events. For 21057/21063 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9304 event pairs, 193 based on Foata normal form. 2/1673 useless extension candidates. Maximal degree in co-relation 9562. Up to 1126 conditions per place. [2024-06-27 18:33:46,128 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 115 selfloop transitions, 78 changer transitions 0/199 dead transitions. [2024-06-27 18:33:46,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 199 transitions, 2586 flow [2024-06-27 18:33:46,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:33:46,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 18:33:46,130 INFO L175 Difference]: Start difference. First operand has 124 places, 162 transitions, 1875 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:33:46,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 199 transitions, 2586 flow [2024-06-27 18:33:46,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 199 transitions, 2427 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:46,168 INFO L231 Difference]: Finished difference. Result has 130 places, 169 transitions, 2005 flow [2024-06-27 18:33:46,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1726, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2005, PETRI_PLACES=130, PETRI_TRANSITIONS=169} [2024-06-27 18:33:46,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 89 predicate places. [2024-06-27 18:33:46,169 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 169 transitions, 2005 flow [2024-06-27 18:33:46,169 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 18:33:46,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:46,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:46,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:33:46,169 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 18:33:46,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:46,170 INFO L85 PathProgramCache]: Analyzing trace with hash 202794463, now seen corresponding path program 6 times [2024-06-27 18:33:46,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:46,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663462486] [2024-06-27 18:33:46,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:46,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:46,650 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 18:33:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663462486] [2024-06-27 18:33:46,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663462486] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:46,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:46,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:46,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924141239] [2024-06-27 18:33:46,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:46,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:46,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:46,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:46,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:46,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:46,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 169 transitions, 2005 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 18:33:46,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:46,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:46,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:47,041 INFO L124 PetriNetUnfolderBase]: 967/1726 cut-off events. [2024-06-27 18:33:47,041 INFO L125 PetriNetUnfolderBase]: For 20908/20914 co-relation queries the response was YES. [2024-06-27 18:33:47,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9675 conditions, 1726 events. 967/1726 cut-off events. For 20908/20914 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9226 event pairs, 193 based on Foata normal form. 2/1667 useless extension candidates. Maximal degree in co-relation 9613. Up to 1123 conditions per place. [2024-06-27 18:33:47,054 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 111 selfloop transitions, 82 changer transitions 0/199 dead transitions. [2024-06-27 18:33:47,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 199 transitions, 2589 flow [2024-06-27 18:33:47,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:47,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:47,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:33:47,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:33:47,058 INFO L175 Difference]: Start difference. First operand has 130 places, 169 transitions, 2005 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:33:47,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 199 transitions, 2589 flow [2024-06-27 18:33:47,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 199 transitions, 2401 flow, removed 44 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:47,102 INFO L231 Difference]: Finished difference. Result has 134 places, 171 transitions, 2021 flow [2024-06-27 18:33:47,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2021, PETRI_PLACES=134, PETRI_TRANSITIONS=171} [2024-06-27 18:33:47,103 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 93 predicate places. [2024-06-27 18:33:47,103 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 171 transitions, 2021 flow [2024-06-27 18:33:47,103 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 18:33:47,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:47,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:47,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:33:47,104 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 18:33:47,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:47,104 INFO L85 PathProgramCache]: Analyzing trace with hash 202801221, now seen corresponding path program 3 times [2024-06-27 18:33:47,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:47,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740591888] [2024-06-27 18:33:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:47,602 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 18:33:47,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:47,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740591888] [2024-06-27 18:33:47,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740591888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:47,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:47,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:47,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121743353] [2024-06-27 18:33:47,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:47,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:47,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:47,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:47,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:47,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:47,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 171 transitions, 2021 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 18:33:47,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:47,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:47,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:48,014 INFO L124 PetriNetUnfolderBase]: 965/1705 cut-off events. [2024-06-27 18:33:48,014 INFO L125 PetriNetUnfolderBase]: For 20937/20952 co-relation queries the response was YES. [2024-06-27 18:33:48,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9564 conditions, 1705 events. 965/1705 cut-off events. For 20937/20952 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9031 event pairs, 196 based on Foata normal form. 11/1664 useless extension candidates. Maximal degree in co-relation 9501. Up to 1368 conditions per place. [2024-06-27 18:33:48,027 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 168 selfloop transitions, 37 changer transitions 0/211 dead transitions. [2024-06-27 18:33:48,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 211 transitions, 2730 flow [2024-06-27 18:33:48,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:48,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:48,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:33:48,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46621621621621623 [2024-06-27 18:33:48,028 INFO L175 Difference]: Start difference. First operand has 134 places, 171 transitions, 2021 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:33:48,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 211 transitions, 2730 flow [2024-06-27 18:33:48,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 211 transitions, 2568 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:48,074 INFO L231 Difference]: Finished difference. Result has 137 places, 172 transitions, 1957 flow [2024-06-27 18:33:48,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1870, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1957, PETRI_PLACES=137, PETRI_TRANSITIONS=172} [2024-06-27 18:33:48,075 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-27 18:33:48,075 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 172 transitions, 1957 flow [2024-06-27 18:33:48,076 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 18:33:48,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:48,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:48,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:33:48,076 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 18:33:48,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:48,076 INFO L85 PathProgramCache]: Analyzing trace with hash 211372101, now seen corresponding path program 4 times [2024-06-27 18:33:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:48,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823463709] [2024-06-27 18:33:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:48,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:48,612 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 18:33:48,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:48,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823463709] [2024-06-27 18:33:48,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823463709] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:48,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:48,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:33:48,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703786660] [2024-06-27 18:33:48,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:48,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:33:48,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:48,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:33:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:33:48,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:48,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 172 transitions, 1957 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 18:33:48,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:48,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:48,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:49,107 INFO L124 PetriNetUnfolderBase]: 963/1699 cut-off events. [2024-06-27 18:33:49,107 INFO L125 PetriNetUnfolderBase]: For 20626/20641 co-relation queries the response was YES. [2024-06-27 18:33:49,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9408 conditions, 1699 events. 963/1699 cut-off events. For 20626/20641 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8959 event pairs, 194 based on Foata normal form. 11/1659 useless extension candidates. Maximal degree in co-relation 9344. Up to 1366 conditions per place. [2024-06-27 18:33:49,119 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 160 selfloop transitions, 43 changer transitions 0/209 dead transitions. [2024-06-27 18:33:49,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 209 transitions, 2580 flow [2024-06-27 18:33:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:49,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 18:33:49,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4560810810810811 [2024-06-27 18:33:49,120 INFO L175 Difference]: Start difference. First operand has 137 places, 172 transitions, 1957 flow. Second operand 8 states and 135 transitions. [2024-06-27 18:33:49,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 209 transitions, 2580 flow [2024-06-27 18:33:49,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 209 transitions, 2503 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:49,160 INFO L231 Difference]: Finished difference. Result has 140 places, 172 transitions, 1971 flow [2024-06-27 18:33:49,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1971, PETRI_PLACES=140, PETRI_TRANSITIONS=172} [2024-06-27 18:33:49,160 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 99 predicate places. [2024-06-27 18:33:49,160 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 172 transitions, 1971 flow [2024-06-27 18:33:49,161 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 18:33:49,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:49,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:49,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:33:49,161 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 18:33:49,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:49,162 INFO L85 PathProgramCache]: Analyzing trace with hash 211383013, now seen corresponding path program 1 times [2024-06-27 18:33:49,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:49,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336010445] [2024-06-27 18:33:49,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:49,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:49,822 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 18:33:49,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:49,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336010445] [2024-06-27 18:33:49,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336010445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:49,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:49,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:49,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071724797] [2024-06-27 18:33:49,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:49,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:49,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:49,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:49,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:49,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:49,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 172 transitions, 1971 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 18:33:49,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:49,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:49,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:50,336 INFO L124 PetriNetUnfolderBase]: 961/1713 cut-off events. [2024-06-27 18:33:50,337 INFO L125 PetriNetUnfolderBase]: For 21115/21115 co-relation queries the response was YES. [2024-06-27 18:33:50,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9397 conditions, 1713 events. 961/1713 cut-off events. For 21115/21115 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9142 event pairs, 216 based on Foata normal form. 1/1658 useless extension candidates. Maximal degree in co-relation 9332. Up to 1484 conditions per place. [2024-06-27 18:33:50,348 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 175 selfloop transitions, 30 changer transitions 0/211 dead transitions. [2024-06-27 18:33:50,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 211 transitions, 2616 flow [2024-06-27 18:33:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:33:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:33:50,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 18:33:50,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4294294294294294 [2024-06-27 18:33:50,350 INFO L175 Difference]: Start difference. First operand has 140 places, 172 transitions, 1971 flow. Second operand 9 states and 143 transitions. [2024-06-27 18:33:50,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 211 transitions, 2616 flow [2024-06-27 18:33:50,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 211 transitions, 2536 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:50,397 INFO L231 Difference]: Finished difference. Result has 145 places, 185 transitions, 2117 flow [2024-06-27 18:33:50,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2117, PETRI_PLACES=145, PETRI_TRANSITIONS=185} [2024-06-27 18:33:50,398 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 104 predicate places. [2024-06-27 18:33:50,398 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 185 transitions, 2117 flow [2024-06-27 18:33:50,399 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 18:33:50,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:50,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:50,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:33:50,399 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 18:33:50,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:50,400 INFO L85 PathProgramCache]: Analyzing trace with hash 255014985, now seen corresponding path program 1 times [2024-06-27 18:33:50,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:50,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257721075] [2024-06-27 18:33:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:50,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:51,329 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 18:33:51,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:51,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257721075] [2024-06-27 18:33:51,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257721075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:51,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:51,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:51,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840424480] [2024-06-27 18:33:51,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:51,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:51,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:51,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:51,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:51,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:51,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 185 transitions, 2117 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 18:33:51,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:51,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:51,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:51,919 INFO L124 PetriNetUnfolderBase]: 906/1641 cut-off events. [2024-06-27 18:33:51,919 INFO L125 PetriNetUnfolderBase]: For 22880/22894 co-relation queries the response was YES. [2024-06-27 18:33:51,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9283 conditions, 1641 events. 906/1641 cut-off events. For 22880/22894 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8976 event pairs, 142 based on Foata normal form. 13/1601 useless extension candidates. Maximal degree in co-relation 9215. Up to 1249 conditions per place. [2024-06-27 18:33:51,930 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 158 selfloop transitions, 36 changer transitions 0/219 dead transitions. [2024-06-27 18:33:51,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 219 transitions, 2655 flow [2024-06-27 18:33:51,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:51,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:51,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:33:51,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 18:33:51,932 INFO L175 Difference]: Start difference. First operand has 145 places, 185 transitions, 2117 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:33:51,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 219 transitions, 2655 flow [2024-06-27 18:33:51,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 219 transitions, 2387 flow, removed 52 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:51,971 INFO L231 Difference]: Finished difference. Result has 148 places, 190 transitions, 1990 flow [2024-06-27 18:33:51,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1990, PETRI_PLACES=148, PETRI_TRANSITIONS=190} [2024-06-27 18:33:51,972 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-06-27 18:33:51,972 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 190 transitions, 1990 flow [2024-06-27 18:33:51,972 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 18:33:51,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:51,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:51,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:33:51,972 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 18:33:51,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:51,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1733599809, now seen corresponding path program 2 times [2024-06-27 18:33:51,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:51,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547249308] [2024-06-27 18:33:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:52,731 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 18:33:52,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:52,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547249308] [2024-06-27 18:33:52,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547249308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:52,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:52,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:52,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086164350] [2024-06-27 18:33:52,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:52,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:52,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:52,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:52,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 190 transitions, 1990 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 18:33:52,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:52,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:52,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:53,322 INFO L124 PetriNetUnfolderBase]: 920/1700 cut-off events. [2024-06-27 18:33:53,323 INFO L125 PetriNetUnfolderBase]: For 24258/24270 co-relation queries the response was YES. [2024-06-27 18:33:53,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9399 conditions, 1700 events. 920/1700 cut-off events. For 24258/24270 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 9509 event pairs, 187 based on Foata normal form. 13/1653 useless extension candidates. Maximal degree in co-relation 9329. Up to 1245 conditions per place. [2024-06-27 18:33:53,335 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 151 selfloop transitions, 54 changer transitions 0/230 dead transitions. [2024-06-27 18:33:53,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 230 transitions, 2675 flow [2024-06-27 18:33:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:53,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:53,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:33:53,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48986486486486486 [2024-06-27 18:33:53,336 INFO L175 Difference]: Start difference. First operand has 148 places, 190 transitions, 1990 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:33:53,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 230 transitions, 2675 flow [2024-06-27 18:33:53,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 230 transitions, 2570 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:33:53,379 INFO L231 Difference]: Finished difference. Result has 153 places, 201 transitions, 2219 flow [2024-06-27 18:33:53,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2219, PETRI_PLACES=153, PETRI_TRANSITIONS=201} [2024-06-27 18:33:53,379 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 112 predicate places. [2024-06-27 18:33:53,380 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 201 transitions, 2219 flow [2024-06-27 18:33:53,380 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 18:33:53,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:53,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:53,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:33:53,380 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 18:33:53,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1733599654, now seen corresponding path program 1 times [2024-06-27 18:33:53,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:53,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650814573] [2024-06-27 18:33:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:53,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:54,089 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 18:33:54,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:54,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650814573] [2024-06-27 18:33:54,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650814573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:54,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:54,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:54,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597036437] [2024-06-27 18:33:54,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:54,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:54,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:54,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:54,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:54,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:54,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 201 transitions, 2219 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 18:33:54,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:54,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:54,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:54,588 INFO L124 PetriNetUnfolderBase]: 996/1777 cut-off events. [2024-06-27 18:33:54,588 INFO L125 PetriNetUnfolderBase]: For 25735/25735 co-relation queries the response was YES. [2024-06-27 18:33:54,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10084 conditions, 1777 events. 996/1777 cut-off events. For 25735/25735 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9576 event pairs, 203 based on Foata normal form. 1/1721 useless extension candidates. Maximal degree in co-relation 10011. Up to 1385 conditions per place. [2024-06-27 18:33:54,601 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 169 selfloop transitions, 57 changer transitions 0/232 dead transitions. [2024-06-27 18:33:54,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 232 transitions, 2813 flow [2024-06-27 18:33:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:54,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 18:33:54,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46283783783783783 [2024-06-27 18:33:54,605 INFO L175 Difference]: Start difference. First operand has 153 places, 201 transitions, 2219 flow. Second operand 8 states and 137 transitions. [2024-06-27 18:33:54,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 232 transitions, 2813 flow [2024-06-27 18:33:54,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 232 transitions, 2700 flow, removed 36 selfloop flow, removed 3 redundant places. [2024-06-27 18:33:54,660 INFO L231 Difference]: Finished difference. Result has 158 places, 203 transitions, 2269 flow [2024-06-27 18:33:54,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2269, PETRI_PLACES=158, PETRI_TRANSITIONS=203} [2024-06-27 18:33:54,661 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 117 predicate places. [2024-06-27 18:33:54,662 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 203 transitions, 2269 flow [2024-06-27 18:33:54,662 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 18:33:54,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:54,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:54,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:33:54,662 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 18:33:54,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:54,663 INFO L85 PathProgramCache]: Analyzing trace with hash 826470307, now seen corresponding path program 1 times [2024-06-27 18:33:54,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:54,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465981869] [2024-06-27 18:33:54,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:54,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:55,183 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 18:33:55,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:55,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465981869] [2024-06-27 18:33:55,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465981869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:55,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:55,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:55,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115142004] [2024-06-27 18:33:55,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:55,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:55,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:55,239 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:55,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 203 transitions, 2269 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 18:33:55,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:55,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:55,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:55,662 INFO L124 PetriNetUnfolderBase]: 1016/1804 cut-off events. [2024-06-27 18:33:55,662 INFO L125 PetriNetUnfolderBase]: For 27271/27271 co-relation queries the response was YES. [2024-06-27 18:33:55,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10192 conditions, 1804 events. 1016/1804 cut-off events. For 27271/27271 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9709 event pairs, 201 based on Foata normal form. 2/1750 useless extension candidates. Maximal degree in co-relation 10118. Up to 1436 conditions per place. [2024-06-27 18:33:55,677 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 183 selfloop transitions, 51 changer transitions 0/240 dead transitions. [2024-06-27 18:33:55,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 240 transitions, 2913 flow [2024-06-27 18:33:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:33:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:33:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 18:33:55,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624624624624625 [2024-06-27 18:33:55,679 INFO L175 Difference]: Start difference. First operand has 158 places, 203 transitions, 2269 flow. Second operand 9 states and 154 transitions. [2024-06-27 18:33:55,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 240 transitions, 2913 flow [2024-06-27 18:33:55,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 240 transitions, 2806 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:55,739 INFO L231 Difference]: Finished difference. Result has 161 places, 206 transitions, 2318 flow [2024-06-27 18:33:55,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2318, PETRI_PLACES=161, PETRI_TRANSITIONS=206} [2024-06-27 18:33:55,739 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 120 predicate places. [2024-06-27 18:33:55,739 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 206 transitions, 2318 flow [2024-06-27 18:33:55,739 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 18:33:55,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:55,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:55,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:33:55,740 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 18:33:55,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:55,755 INFO L85 PathProgramCache]: Analyzing trace with hash 942655207, now seen corresponding path program 2 times [2024-06-27 18:33:55,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:55,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535027447] [2024-06-27 18:33:55,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:55,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:56,343 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 18:33:56,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:56,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535027447] [2024-06-27 18:33:56,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535027447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:56,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:56,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692835324] [2024-06-27 18:33:56,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:56,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:56,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:56,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:56,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:56,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 206 transitions, 2318 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 18:33:56,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:56,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:56,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:56,788 INFO L124 PetriNetUnfolderBase]: 1076/1891 cut-off events. [2024-06-27 18:33:56,788 INFO L125 PetriNetUnfolderBase]: For 31302/31302 co-relation queries the response was YES. [2024-06-27 18:33:56,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11010 conditions, 1891 events. 1076/1891 cut-off events. For 31302/31302 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10202 event pairs, 214 based on Foata normal form. 2/1837 useless extension candidates. Maximal degree in co-relation 10935. Up to 1320 conditions per place. [2024-06-27 18:33:56,802 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 171 selfloop transitions, 75 changer transitions 0/252 dead transitions. [2024-06-27 18:33:56,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 252 transitions, 3258 flow [2024-06-27 18:33:56,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:33:56,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:33:56,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:33:56,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:33:56,804 INFO L175 Difference]: Start difference. First operand has 161 places, 206 transitions, 2318 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:33:56,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 252 transitions, 3258 flow [2024-06-27 18:33:56,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 252 transitions, 3124 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 18:33:56,860 INFO L231 Difference]: Finished difference. Result has 164 places, 218 transitions, 2581 flow [2024-06-27 18:33:56,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2581, PETRI_PLACES=164, PETRI_TRANSITIONS=218} [2024-06-27 18:33:56,860 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-27 18:33:56,861 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 218 transitions, 2581 flow [2024-06-27 18:33:56,861 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 18:33:56,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:56,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:56,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:33:56,861 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 18:33:56,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:56,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1614589569, now seen corresponding path program 3 times [2024-06-27 18:33:56,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:56,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185993348] [2024-06-27 18:33:56,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:56,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:57,547 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 18:33:57,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185993348] [2024-06-27 18:33:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185993348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:57,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:57,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:57,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299564301] [2024-06-27 18:33:57,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:57,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:57,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:57,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:57,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:33:57,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 218 transitions, 2581 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 18:33:57,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:57,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:33:57,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:58,019 INFO L124 PetriNetUnfolderBase]: 994/1794 cut-off events. [2024-06-27 18:33:58,019 INFO L125 PetriNetUnfolderBase]: For 35280/35305 co-relation queries the response was YES. [2024-06-27 18:33:58,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10972 conditions, 1794 events. 994/1794 cut-off events. For 35280/35305 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9931 event pairs, 181 based on Foata normal form. 22/1757 useless extension candidates. Maximal degree in co-relation 10895. Up to 1338 conditions per place. [2024-06-27 18:33:58,048 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 164 selfloop transitions, 57 changer transitions 0/247 dead transitions. [2024-06-27 18:33:58,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 247 transitions, 3171 flow [2024-06-27 18:33:58,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:33:58,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:33:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:33:58,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831081081081081 [2024-06-27 18:33:58,050 INFO L175 Difference]: Start difference. First operand has 164 places, 218 transitions, 2581 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:33:58,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 247 transitions, 3171 flow [2024-06-27 18:33:58,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 247 transitions, 3074 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 18:33:58,122 INFO L231 Difference]: Finished difference. Result has 168 places, 220 transitions, 2649 flow [2024-06-27 18:33:58,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2484, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2649, PETRI_PLACES=168, PETRI_TRANSITIONS=220} [2024-06-27 18:33:58,122 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-27 18:33:58,123 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 220 transitions, 2649 flow [2024-06-27 18:33:58,123 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 18:33:58,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:58,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:58,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:33:58,123 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 18:33:58,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:58,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1614374088, now seen corresponding path program 1 times [2024-06-27 18:33:58,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:58,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668666739] [2024-06-27 18:33:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:58,650 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 18:33:58,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:58,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668666739] [2024-06-27 18:33:58,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668666739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:58,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:58,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:58,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665636760] [2024-06-27 18:33:58,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:58,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:58,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:58,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:58,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:58,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:58,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 220 transitions, 2649 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 18:33:58,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:58,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:58,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:33:59,069 INFO L124 PetriNetUnfolderBase]: 1104/1927 cut-off events. [2024-06-27 18:33:59,070 INFO L125 PetriNetUnfolderBase]: For 36247/36247 co-relation queries the response was YES. [2024-06-27 18:33:59,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11798 conditions, 1927 events. 1104/1927 cut-off events. For 36247/36247 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 10337 event pairs, 223 based on Foata normal form. 1/1876 useless extension candidates. Maximal degree in co-relation 11719. Up to 1687 conditions per place. [2024-06-27 18:33:59,085 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 229 selfloop transitions, 24 changer transitions 0/259 dead transitions. [2024-06-27 18:33:59,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 259 transitions, 3403 flow [2024-06-27 18:33:59,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:33:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:33:59,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:33:59,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:33:59,087 INFO L175 Difference]: Start difference. First operand has 168 places, 220 transitions, 2649 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:33:59,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 259 transitions, 3403 flow [2024-06-27 18:33:59,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 259 transitions, 3252 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 18:33:59,160 INFO L231 Difference]: Finished difference. Result has 171 places, 222 transitions, 2592 flow [2024-06-27 18:33:59,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2500, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2592, PETRI_PLACES=171, PETRI_TRANSITIONS=222} [2024-06-27 18:33:59,162 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-27 18:33:59,162 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 222 transitions, 2592 flow [2024-06-27 18:33:59,162 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 18:33:59,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:33:59,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:33:59,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:33:59,162 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 18:33:59,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:33:59,163 INFO L85 PathProgramCache]: Analyzing trace with hash 884556303, now seen corresponding path program 3 times [2024-06-27 18:33:59,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:33:59,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117844286] [2024-06-27 18:33:59,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:33:59,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:33:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:33:59,640 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 18:33:59,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:33:59,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117844286] [2024-06-27 18:33:59,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117844286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:33:59,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:33:59,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:33:59,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213960021] [2024-06-27 18:33:59,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:33:59,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:33:59,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:33:59,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:33:59,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:33:59,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:33:59,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 222 transitions, 2592 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 18:33:59,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:33:59,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:33:59,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:00,226 INFO L124 PetriNetUnfolderBase]: 1124/1966 cut-off events. [2024-06-27 18:34:00,226 INFO L125 PetriNetUnfolderBase]: For 37268/37268 co-relation queries the response was YES. [2024-06-27 18:34:00,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11905 conditions, 1966 events. 1124/1966 cut-off events. For 37268/37268 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 10649 event pairs, 195 based on Foata normal form. 2/1912 useless extension candidates. Maximal degree in co-relation 11825. Up to 1382 conditions per place. [2024-06-27 18:34:00,242 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 166 selfloop transitions, 86 changer transitions 0/258 dead transitions. [2024-06-27 18:34:00,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 258 transitions, 3346 flow [2024-06-27 18:34:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:00,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:00,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:34:00,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:34:00,244 INFO L175 Difference]: Start difference. First operand has 171 places, 222 transitions, 2592 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:34:00,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 258 transitions, 3346 flow [2024-06-27 18:34:00,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 258 transitions, 3272 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:00,322 INFO L231 Difference]: Finished difference. Result has 173 places, 225 transitions, 2745 flow [2024-06-27 18:34:00,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2518, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2745, PETRI_PLACES=173, PETRI_TRANSITIONS=225} [2024-06-27 18:34:00,323 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 132 predicate places. [2024-06-27 18:34:00,323 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 225 transitions, 2745 flow [2024-06-27 18:34:00,323 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 18:34:00,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:00,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:00,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:34:00,324 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 18:34:00,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:00,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1699805125, now seen corresponding path program 4 times [2024-06-27 18:34:00,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:00,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655601961] [2024-06-27 18:34:00,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:00,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:00,881 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 18:34:00,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:00,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655601961] [2024-06-27 18:34:00,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655601961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:00,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:00,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501912209] [2024-06-27 18:34:00,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:00,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:00,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:00,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:00,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 225 transitions, 2745 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 18:34:00,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:00,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:00,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:01,417 INFO L124 PetriNetUnfolderBase]: 1120/1966 cut-off events. [2024-06-27 18:34:01,417 INFO L125 PetriNetUnfolderBase]: For 37438/37438 co-relation queries the response was YES. [2024-06-27 18:34:01,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12019 conditions, 1966 events. 1120/1966 cut-off events. For 37438/37438 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10705 event pairs, 196 based on Foata normal form. 2/1910 useless extension candidates. Maximal degree in co-relation 11938. Up to 1379 conditions per place. [2024-06-27 18:34:01,436 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 169 selfloop transitions, 83 changer transitions 0/258 dead transitions. [2024-06-27 18:34:01,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 258 transitions, 3453 flow [2024-06-27 18:34:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:01,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:34:01,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 18:34:01,438 INFO L175 Difference]: Start difference. First operand has 173 places, 225 transitions, 2745 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:34:01,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 258 transitions, 3453 flow [2024-06-27 18:34:01,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 258 transitions, 3219 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:01,523 INFO L231 Difference]: Finished difference. Result has 176 places, 225 transitions, 2683 flow [2024-06-27 18:34:01,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2683, PETRI_PLACES=176, PETRI_TRANSITIONS=225} [2024-06-27 18:34:01,523 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 135 predicate places. [2024-06-27 18:34:01,523 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 225 transitions, 2683 flow [2024-06-27 18:34:01,524 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 18:34:01,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:01,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:01,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:34:01,524 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 18:34:01,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:01,525 INFO L85 PathProgramCache]: Analyzing trace with hash -640651889, now seen corresponding path program 5 times [2024-06-27 18:34:01,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:01,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534612158] [2024-06-27 18:34:01,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:01,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:01,990 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 18:34:01,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:01,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534612158] [2024-06-27 18:34:01,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534612158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:01,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:01,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:01,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675772893] [2024-06-27 18:34:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:01,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:02,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:02,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 225 transitions, 2683 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 18:34:02,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:02,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:02,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:02,477 INFO L124 PetriNetUnfolderBase]: 1140/1997 cut-off events. [2024-06-27 18:34:02,477 INFO L125 PetriNetUnfolderBase]: For 39296/39302 co-relation queries the response was YES. [2024-06-27 18:34:02,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12109 conditions, 1997 events. 1140/1997 cut-off events. For 39296/39302 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10876 event pairs, 210 based on Foata normal form. 2/1937 useless extension candidates. Maximal degree in co-relation 12027. Up to 1165 conditions per place. [2024-06-27 18:34:02,493 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 154 selfloop transitions, 113 changer transitions 0/273 dead transitions. [2024-06-27 18:34:02,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 273 transitions, 3721 flow [2024-06-27 18:34:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:02,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:34:02,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4804804804804805 [2024-06-27 18:34:02,495 INFO L175 Difference]: Start difference. First operand has 176 places, 225 transitions, 2683 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:34:02,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 273 transitions, 3721 flow [2024-06-27 18:34:02,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 273 transitions, 3571 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:02,585 INFO L231 Difference]: Finished difference. Result has 179 places, 240 transitions, 3027 flow [2024-06-27 18:34:02,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3027, PETRI_PLACES=179, PETRI_TRANSITIONS=240} [2024-06-27 18:34:02,585 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 18:34:02,585 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 240 transitions, 3027 flow [2024-06-27 18:34:02,585 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 18:34:02,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:02,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:02,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:34:02,586 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 18:34:02,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:02,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1991656767, now seen corresponding path program 4 times [2024-06-27 18:34:02,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:02,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729028191] [2024-06-27 18:34:02,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:02,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:03,273 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 18:34:03,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:03,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729028191] [2024-06-27 18:34:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729028191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:03,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:03,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:03,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740070874] [2024-06-27 18:34:03,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:03,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:03,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:03,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 37 [2024-06-27 18:34:03,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 240 transitions, 3027 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 18:34:03,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:03,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 37 [2024-06-27 18:34:03,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:03,757 INFO L124 PetriNetUnfolderBase]: 1036/1864 cut-off events. [2024-06-27 18:34:03,757 INFO L125 PetriNetUnfolderBase]: For 41165/41178 co-relation queries the response was YES. [2024-06-27 18:34:03,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11951 conditions, 1864 events. 1036/1864 cut-off events. For 41165/41178 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10530 event pairs, 152 based on Foata normal form. 2/1802 useless extension candidates. Maximal degree in co-relation 11867. Up to 1359 conditions per place. [2024-06-27 18:34:03,772 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 176 selfloop transitions, 66 changer transitions 0/268 dead transitions. [2024-06-27 18:34:03,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 268 transitions, 3671 flow [2024-06-27 18:34:03,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:03,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:03,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:34:03,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797297297297297 [2024-06-27 18:34:03,773 INFO L175 Difference]: Start difference. First operand has 179 places, 240 transitions, 3027 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:34:03,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 268 transitions, 3671 flow [2024-06-27 18:34:03,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 268 transitions, 3400 flow, removed 59 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:03,867 INFO L231 Difference]: Finished difference. Result has 182 places, 242 transitions, 2945 flow [2024-06-27 18:34:03,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2945, PETRI_PLACES=182, PETRI_TRANSITIONS=242} [2024-06-27 18:34:03,867 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-27 18:34:03,867 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 242 transitions, 2945 flow [2024-06-27 18:34:03,868 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 18:34:03,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:03,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:03,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:34:03,868 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 18:34:03,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:03,868 INFO L85 PathProgramCache]: Analyzing trace with hash -633292799, now seen corresponding path program 6 times [2024-06-27 18:34:03,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:03,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466292123] [2024-06-27 18:34:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:04,397 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 18:34:04,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:04,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466292123] [2024-06-27 18:34:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466292123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:04,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:04,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650013793] [2024-06-27 18:34:04,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:04,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:04,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:04,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:04,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:04,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 242 transitions, 2945 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 18:34:04,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:04,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:04,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:04,919 INFO L124 PetriNetUnfolderBase]: 1212/2102 cut-off events. [2024-06-27 18:34:04,919 INFO L125 PetriNetUnfolderBase]: For 44054/44060 co-relation queries the response was YES. [2024-06-27 18:34:04,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12919 conditions, 2102 events. 1212/2102 cut-off events. For 44054/44060 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11514 event pairs, 174 based on Foata normal form. 2/2043 useless extension candidates. Maximal degree in co-relation 12834. Up to 1226 conditions per place. [2024-06-27 18:34:04,937 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 156 selfloop transitions, 130 changer transitions 0/292 dead transitions. [2024-06-27 18:34:04,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 292 transitions, 4097 flow [2024-06-27 18:34:04,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 162 transitions. [2024-06-27 18:34:04,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:34:04,940 INFO L175 Difference]: Start difference. First operand has 182 places, 242 transitions, 2945 flow. Second operand 9 states and 162 transitions. [2024-06-27 18:34:04,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 292 transitions, 4097 flow [2024-06-27 18:34:05,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 292 transitions, 3926 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:05,043 INFO L231 Difference]: Finished difference. Result has 186 places, 256 transitions, 3241 flow [2024-06-27 18:34:05,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2774, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3241, PETRI_PLACES=186, PETRI_TRANSITIONS=256} [2024-06-27 18:34:05,043 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 145 predicate places. [2024-06-27 18:34:05,044 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 256 transitions, 3241 flow [2024-06-27 18:34:05,044 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 18:34:05,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:05,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:05,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:34:05,044 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 18:34:05,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:05,045 INFO L85 PathProgramCache]: Analyzing trace with hash -383941850, now seen corresponding path program 2 times [2024-06-27 18:34:05,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:05,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559481120] [2024-06-27 18:34:05,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:05,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:05,489 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 18:34:05,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:05,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559481120] [2024-06-27 18:34:05,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559481120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:05,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:05,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:05,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486492950] [2024-06-27 18:34:05,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:05,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:05,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:05,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:05,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:05,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:05,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 256 transitions, 3241 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 18:34:05,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:05,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:05,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:05,967 INFO L124 PetriNetUnfolderBase]: 1245/2165 cut-off events. [2024-06-27 18:34:05,967 INFO L125 PetriNetUnfolderBase]: For 47541/47559 co-relation queries the response was YES. [2024-06-27 18:34:05,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13710 conditions, 2165 events. 1245/2165 cut-off events. For 47541/47559 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11983 event pairs, 206 based on Foata normal form. 13/2116 useless extension candidates. Maximal degree in co-relation 13623. Up to 1725 conditions per place. [2024-06-27 18:34:05,987 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 254 selfloop transitions, 53 changer transitions 0/313 dead transitions. [2024-06-27 18:34:05,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 313 transitions, 4517 flow [2024-06-27 18:34:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:05,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:34:05,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46846846846846846 [2024-06-27 18:34:05,989 INFO L175 Difference]: Start difference. First operand has 186 places, 256 transitions, 3241 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:34:05,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 313 transitions, 4517 flow [2024-06-27 18:34:06,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 313 transitions, 4266 flow, removed 34 selfloop flow, removed 4 redundant places. [2024-06-27 18:34:06,178 INFO L231 Difference]: Finished difference. Result has 191 places, 262 transitions, 3249 flow [2024-06-27 18:34:06,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3249, PETRI_PLACES=191, PETRI_TRANSITIONS=262} [2024-06-27 18:34:06,179 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-27 18:34:06,179 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 262 transitions, 3249 flow [2024-06-27 18:34:06,180 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 18:34:06,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:06,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:06,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:34:06,180 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 18:34:06,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash -383949569, now seen corresponding path program 7 times [2024-06-27 18:34:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605757161] [2024-06-27 18:34:06,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:06,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:06,763 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 18:34:06,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:06,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605757161] [2024-06-27 18:34:06,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605757161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:06,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:06,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:06,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432900201] [2024-06-27 18:34:06,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:06,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:06,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:06,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:06,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 262 transitions, 3249 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 18:34:06,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:06,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:07,279 INFO L124 PetriNetUnfolderBase]: 1241/2156 cut-off events. [2024-06-27 18:34:07,279 INFO L125 PetriNetUnfolderBase]: For 47999/48005 co-relation queries the response was YES. [2024-06-27 18:34:07,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13435 conditions, 2156 events. 1241/2156 cut-off events. For 47999/48005 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11920 event pairs, 179 based on Foata normal form. 2/2094 useless extension candidates. Maximal degree in co-relation 13347. Up to 1274 conditions per place. [2024-06-27 18:34:07,298 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 158 selfloop transitions, 132 changer transitions 0/296 dead transitions. [2024-06-27 18:34:07,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 296 transitions, 4150 flow [2024-06-27 18:34:07,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:07,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:07,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 18:34:07,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774774774774775 [2024-06-27 18:34:07,300 INFO L175 Difference]: Start difference. First operand has 191 places, 262 transitions, 3249 flow. Second operand 9 states and 159 transitions. [2024-06-27 18:34:07,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 296 transitions, 4150 flow [2024-06-27 18:34:07,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 296 transitions, 4037 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 18:34:07,422 INFO L231 Difference]: Finished difference. Result has 197 places, 263 transitions, 3444 flow [2024-06-27 18:34:07,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3136, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3444, PETRI_PLACES=197, PETRI_TRANSITIONS=263} [2024-06-27 18:34:07,423 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 156 predicate places. [2024-06-27 18:34:07,423 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 263 transitions, 3444 flow [2024-06-27 18:34:07,423 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 18:34:07,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:07,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:07,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:34:07,424 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 18:34:07,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:07,424 INFO L85 PathProgramCache]: Analyzing trace with hash -374745359, now seen corresponding path program 8 times [2024-06-27 18:34:07,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:07,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253445384] [2024-06-27 18:34:07,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:07,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:07,894 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 18:34:07,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:07,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253445384] [2024-06-27 18:34:07,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253445384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:07,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:07,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:07,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190395981] [2024-06-27 18:34:07,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:07,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:07,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:07,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:07,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:07,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 263 transitions, 3444 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 18:34:07,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:07,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:07,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:08,391 INFO L124 PetriNetUnfolderBase]: 1237/2147 cut-off events. [2024-06-27 18:34:08,392 INFO L125 PetriNetUnfolderBase]: For 47564/47570 co-relation queries the response was YES. [2024-06-27 18:34:08,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13642 conditions, 2147 events. 1237/2147 cut-off events. For 47564/47570 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11802 event pairs, 168 based on Foata normal form. 2/2086 useless extension candidates. Maximal degree in co-relation 13551. Up to 1271 conditions per place. [2024-06-27 18:34:08,411 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 149 selfloop transitions, 140 changer transitions 0/295 dead transitions. [2024-06-27 18:34:08,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 295 transitions, 4244 flow [2024-06-27 18:34:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:08,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:34:08,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47147147147147145 [2024-06-27 18:34:08,412 INFO L175 Difference]: Start difference. First operand has 197 places, 263 transitions, 3444 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:34:08,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 295 transitions, 4244 flow [2024-06-27 18:34:08,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 295 transitions, 3982 flow, removed 17 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:08,546 INFO L231 Difference]: Finished difference. Result has 201 places, 263 transitions, 3469 flow [2024-06-27 18:34:08,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3182, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3469, PETRI_PLACES=201, PETRI_TRANSITIONS=263} [2024-06-27 18:34:08,547 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-27 18:34:08,547 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 263 transitions, 3469 flow [2024-06-27 18:34:08,547 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 18:34:08,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:08,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:08,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:34:08,548 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 18:34:08,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:08,548 INFO L85 PathProgramCache]: Analyzing trace with hash -374745080, now seen corresponding path program 3 times [2024-06-27 18:34:08,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:08,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762109222] [2024-06-27 18:34:08,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:08,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:09,050 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 18:34:09,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:09,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762109222] [2024-06-27 18:34:09,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762109222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:09,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:09,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:09,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294059709] [2024-06-27 18:34:09,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:09,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:09,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:09,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:09,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:09,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:09,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 263 transitions, 3469 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 18:34:09,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:09,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:09,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:09,611 INFO L124 PetriNetUnfolderBase]: 1250/2173 cut-off events. [2024-06-27 18:34:09,612 INFO L125 PetriNetUnfolderBase]: For 48102/48120 co-relation queries the response was YES. [2024-06-27 18:34:09,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13893 conditions, 2173 events. 1250/2173 cut-off events. For 48102/48120 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11984 event pairs, 210 based on Foata normal form. 13/2124 useless extension candidates. Maximal degree in co-relation 13801. Up to 1727 conditions per place. [2024-06-27 18:34:09,630 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 251 selfloop transitions, 59 changer transitions 0/316 dead transitions. [2024-06-27 18:34:09,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 316 transitions, 4682 flow [2024-06-27 18:34:09,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:09,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:09,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:34:09,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:34:09,633 INFO L175 Difference]: Start difference. First operand has 201 places, 263 transitions, 3469 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:34:09,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 316 transitions, 4682 flow [2024-06-27 18:34:09,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 316 transitions, 4394 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:09,820 INFO L231 Difference]: Finished difference. Result has 203 places, 265 transitions, 3362 flow [2024-06-27 18:34:09,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3206, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3362, PETRI_PLACES=203, PETRI_TRANSITIONS=265} [2024-06-27 18:34:09,823 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-27 18:34:09,823 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 265 transitions, 3362 flow [2024-06-27 18:34:09,823 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 18:34:09,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:09,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:09,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:34:09,824 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 18:34:09,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:09,824 INFO L85 PathProgramCache]: Analyzing trace with hash -374418650, now seen corresponding path program 4 times [2024-06-27 18:34:09,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:09,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154514152] [2024-06-27 18:34:09,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:09,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:10,407 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 18:34:10,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:10,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154514152] [2024-06-27 18:34:10,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154514152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:10,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:10,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:10,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2865] [2024-06-27 18:34:10,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:10,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:10,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:10,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:10,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:10,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:10,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 265 transitions, 3362 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 18:34:10,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:10,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:10,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:10,996 INFO L124 PetriNetUnfolderBase]: 1248/2172 cut-off events. [2024-06-27 18:34:10,996 INFO L125 PetriNetUnfolderBase]: For 47713/47713 co-relation queries the response was YES. [2024-06-27 18:34:11,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13598 conditions, 2172 events. 1248/2172 cut-off events. For 47713/47713 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11979 event pairs, 238 based on Foata normal form. 1/2111 useless extension candidates. Maximal degree in co-relation 13505. Up to 1913 conditions per place. [2024-06-27 18:34:11,017 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 272 selfloop transitions, 23 changer transitions 0/301 dead transitions. [2024-06-27 18:34:11,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 301 transitions, 4137 flow [2024-06-27 18:34:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:34:11,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:34:11,019 INFO L175 Difference]: Start difference. First operand has 203 places, 265 transitions, 3362 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:34:11,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 301 transitions, 4137 flow [2024-06-27 18:34:11,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 301 transitions, 3993 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:11,173 INFO L231 Difference]: Finished difference. Result has 206 places, 265 transitions, 3270 flow [2024-06-27 18:34:11,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3218, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3270, PETRI_PLACES=206, PETRI_TRANSITIONS=265} [2024-06-27 18:34:11,174 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 18:34:11,174 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 265 transitions, 3270 flow [2024-06-27 18:34:11,174 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 18:34:11,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:11,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:11,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:34:11,175 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 18:34:11,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:11,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1991864529, now seen corresponding path program 9 times [2024-06-27 18:34:11,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:11,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026978977] [2024-06-27 18:34:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:11,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:11,669 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 18:34:11,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:11,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026978977] [2024-06-27 18:34:11,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026978977] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:11,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:11,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:11,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153175025] [2024-06-27 18:34:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:11,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:11,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:11,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:11,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 265 transitions, 3270 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 18:34:11,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:11,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:11,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:12,223 INFO L124 PetriNetUnfolderBase]: 1268/2200 cut-off events. [2024-06-27 18:34:12,223 INFO L125 PetriNetUnfolderBase]: For 49589/49595 co-relation queries the response was YES. [2024-06-27 18:34:12,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13486 conditions, 2200 events. 1268/2200 cut-off events. For 49589/49595 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12139 event pairs, 215 based on Foata normal form. 2/2137 useless extension candidates. Maximal degree in co-relation 13392. Up to 1305 conditions per place. [2024-06-27 18:34:12,242 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 171 selfloop transitions, 125 changer transitions 0/302 dead transitions. [2024-06-27 18:34:12,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 302 transitions, 4230 flow [2024-06-27 18:34:12,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:34:12,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-06-27 18:34:12,244 INFO L175 Difference]: Start difference. First operand has 206 places, 265 transitions, 3270 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:34:12,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 302 transitions, 4230 flow [2024-06-27 18:34:12,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 302 transitions, 4083 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 18:34:12,389 INFO L231 Difference]: Finished difference. Result has 204 places, 268 transitions, 3425 flow [2024-06-27 18:34:12,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3425, PETRI_PLACES=204, PETRI_TRANSITIONS=268} [2024-06-27 18:34:12,389 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 18:34:12,389 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 268 transitions, 3425 flow [2024-06-27 18:34:12,390 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 18:34:12,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:12,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:12,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:34:12,392 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 18:34:12,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:12,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1991872248, now seen corresponding path program 5 times [2024-06-27 18:34:12,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:12,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863754682] [2024-06-27 18:34:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:12,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:12,890 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 18:34:12,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:12,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863754682] [2024-06-27 18:34:12,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863754682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:12,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:12,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:12,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515364704] [2024-06-27 18:34:12,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:12,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:12,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:12,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:12,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:12,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:12,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 268 transitions, 3425 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 18:34:12,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:12,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:12,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:13,419 INFO L124 PetriNetUnfolderBase]: 1266/2194 cut-off events. [2024-06-27 18:34:13,420 INFO L125 PetriNetUnfolderBase]: For 49568/49586 co-relation queries the response was YES. [2024-06-27 18:34:13,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13709 conditions, 2194 events. 1266/2194 cut-off events. For 49568/49586 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12087 event pairs, 216 based on Foata normal form. 13/2146 useless extension candidates. Maximal degree in co-relation 13615. Up to 1753 conditions per place. [2024-06-27 18:34:13,436 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 258 selfloop transitions, 53 changer transitions 0/317 dead transitions. [2024-06-27 18:34:13,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 317 transitions, 4435 flow [2024-06-27 18:34:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:13,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:34:13,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46546546546546547 [2024-06-27 18:34:13,437 INFO L175 Difference]: Start difference. First operand has 204 places, 268 transitions, 3425 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:34:13,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 317 transitions, 4435 flow [2024-06-27 18:34:13,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 317 transitions, 4012 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 18:34:13,588 INFO L231 Difference]: Finished difference. Result has 204 places, 268 transitions, 3146 flow [2024-06-27 18:34:13,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3146, PETRI_PLACES=204, PETRI_TRANSITIONS=268} [2024-06-27 18:34:13,594 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 18:34:13,595 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 268 transitions, 3146 flow [2024-06-27 18:34:13,595 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 18:34:13,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:13,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:13,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:34:13,595 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 18:34:13,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:13,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1991871969, now seen corresponding path program 10 times [2024-06-27 18:34:13,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:13,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912169575] [2024-06-27 18:34:13,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:13,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:14,098 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 18:34:14,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:14,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912169575] [2024-06-27 18:34:14,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912169575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:14,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:14,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:34:14,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741944168] [2024-06-27 18:34:14,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:14,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:34:14,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:14,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:34:14,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:34:14,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:14,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 268 transitions, 3146 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 18:34:14,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:14,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:14,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:14,630 INFO L124 PetriNetUnfolderBase]: 1262/2191 cut-off events. [2024-06-27 18:34:14,630 INFO L125 PetriNetUnfolderBase]: For 47655/47661 co-relation queries the response was YES. [2024-06-27 18:34:14,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13156 conditions, 2191 events. 1262/2191 cut-off events. For 47655/47661 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12061 event pairs, 214 based on Foata normal form. 2/2128 useless extension candidates. Maximal degree in co-relation 13063. Up to 1299 conditions per place. [2024-06-27 18:34:14,649 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 169 selfloop transitions, 126 changer transitions 0/301 dead transitions. [2024-06-27 18:34:14,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 301 transitions, 3972 flow [2024-06-27 18:34:14,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:14,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 18:34:14,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48348348348348347 [2024-06-27 18:34:14,651 INFO L175 Difference]: Start difference. First operand has 204 places, 268 transitions, 3146 flow. Second operand 9 states and 161 transitions. [2024-06-27 18:34:14,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 301 transitions, 3972 flow [2024-06-27 18:34:14,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 301 transitions, 3774 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 18:34:14,811 INFO L231 Difference]: Finished difference. Result has 204 places, 268 transitions, 3207 flow [2024-06-27 18:34:14,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2948, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3207, PETRI_PLACES=204, PETRI_TRANSITIONS=268} [2024-06-27 18:34:14,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 163 predicate places. [2024-06-27 18:34:14,811 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 268 transitions, 3207 flow [2024-06-27 18:34:14,812 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 18:34:14,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:14,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:14,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:34:14,812 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 18:34:14,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:14,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2037059434, now seen corresponding path program 1 times [2024-06-27 18:34:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:14,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580558927] [2024-06-27 18:34:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:14,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:15,587 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 18:34:15,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:15,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580558927] [2024-06-27 18:34:15,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580558927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:15,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:15,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959495362] [2024-06-27 18:34:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:15,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:15,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:15,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:15,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:15,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:15,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 268 transitions, 3207 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 18:34:15,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:15,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:15,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:16,166 INFO L124 PetriNetUnfolderBase]: 1259/2188 cut-off events. [2024-06-27 18:34:16,167 INFO L125 PetriNetUnfolderBase]: For 46621/46621 co-relation queries the response was YES. [2024-06-27 18:34:16,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13187 conditions, 2188 events. 1259/2188 cut-off events. For 46621/46621 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12051 event pairs, 234 based on Foata normal form. 2/2128 useless extension candidates. Maximal degree in co-relation 13093. Up to 1923 conditions per place. [2024-06-27 18:34:16,186 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 263 selfloop transitions, 32 changer transitions 0/301 dead transitions. [2024-06-27 18:34:16,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 301 transitions, 3981 flow [2024-06-27 18:34:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:16,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:34:16,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42702702702702705 [2024-06-27 18:34:16,187 INFO L175 Difference]: Start difference. First operand has 204 places, 268 transitions, 3207 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:34:16,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 301 transitions, 3981 flow [2024-06-27 18:34:16,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 301 transitions, 3678 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:16,338 INFO L231 Difference]: Finished difference. Result has 206 places, 270 transitions, 3021 flow [2024-06-27 18:34:16,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2904, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3021, PETRI_PLACES=206, PETRI_TRANSITIONS=270} [2024-06-27 18:34:16,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 18:34:16,339 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 270 transitions, 3021 flow [2024-06-27 18:34:16,339 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 18:34:16,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:16,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:16,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:34:16,340 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:16,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1715775969, now seen corresponding path program 1 times [2024-06-27 18:34:16,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:16,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276674369] [2024-06-27 18:34:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:16,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:16,407 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 18:34:16,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:16,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276674369] [2024-06-27 18:34:16,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276674369] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:16,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:16,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:34:16,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674271530] [2024-06-27 18:34:16,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:16,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:34:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:34:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:34:16,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 37 [2024-06-27 18:34:16,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 270 transitions, 3021 flow. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:16,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:16,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 37 [2024-06-27 18:34:16,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:16,740 INFO L124 PetriNetUnfolderBase]: 955/1874 cut-off events. [2024-06-27 18:34:16,740 INFO L125 PetriNetUnfolderBase]: For 38518/38745 co-relation queries the response was YES. [2024-06-27 18:34:16,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9975 conditions, 1874 events. 955/1874 cut-off events. For 38518/38745 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11754 event pairs, 124 based on Foata normal form. 94/1877 useless extension candidates. Maximal degree in co-relation 9881. Up to 601 conditions per place. [2024-06-27 18:34:16,760 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 80 selfloop transitions, 18 changer transitions 93/323 dead transitions. [2024-06-27 18:34:16,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 323 transitions, 3683 flow [2024-06-27 18:34:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:34:16,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:34:16,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 178 transitions. [2024-06-27 18:34:16,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013513513513513 [2024-06-27 18:34:16,762 INFO L175 Difference]: Start difference. First operand has 206 places, 270 transitions, 3021 flow. Second operand 8 states and 178 transitions. [2024-06-27 18:34:16,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 323 transitions, 3683 flow [2024-06-27 18:34:16,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 323 transitions, 3582 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:16,907 INFO L231 Difference]: Finished difference. Result has 210 places, 215 transitions, 2421 flow [2024-06-27 18:34:16,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2920, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2421, PETRI_PLACES=210, PETRI_TRANSITIONS=215} [2024-06-27 18:34:16,907 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 169 predicate places. [2024-06-27 18:34:16,907 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 215 transitions, 2421 flow [2024-06-27 18:34:16,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:34:16,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:16,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:16,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:34:16,908 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 18:34:16,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:16,908 INFO L85 PathProgramCache]: Analyzing trace with hash -867444308, now seen corresponding path program 1 times [2024-06-27 18:34:16,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:16,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611009380] [2024-06-27 18:34:16,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:16,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:17,580 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 18:34:17,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:17,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611009380] [2024-06-27 18:34:17,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611009380] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:17,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:17,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:17,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975934909] [2024-06-27 18:34:17,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:17,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:17,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:17,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:17,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 215 transitions, 2421 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 18:34:17,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:17,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:17,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:18,148 INFO L124 PetriNetUnfolderBase]: 1136/1968 cut-off events. [2024-06-27 18:34:18,148 INFO L125 PetriNetUnfolderBase]: For 44994/44994 co-relation queries the response was YES. [2024-06-27 18:34:18,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11871 conditions, 1968 events. 1136/1968 cut-off events. For 44994/44994 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10445 event pairs, 231 based on Foata normal form. 2/1969 useless extension candidates. Maximal degree in co-relation 11772. Up to 1647 conditions per place. [2024-06-27 18:34:18,166 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 207 selfloop transitions, 37 changer transitions 0/250 dead transitions. [2024-06-27 18:34:18,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 250 transitions, 3056 flow [2024-06-27 18:34:18,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:18,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:34:18,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:34:18,168 INFO L175 Difference]: Start difference. First operand has 210 places, 215 transitions, 2421 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:34:18,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 250 transitions, 3056 flow [2024-06-27 18:34:18,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 250 transitions, 2906 flow, removed 9 selfloop flow, removed 14 redundant places. [2024-06-27 18:34:18,317 INFO L231 Difference]: Finished difference. Result has 201 places, 216 transitions, 2366 flow [2024-06-27 18:34:18,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2366, PETRI_PLACES=201, PETRI_TRANSITIONS=216} [2024-06-27 18:34:18,318 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 160 predicate places. [2024-06-27 18:34:18,318 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 216 transitions, 2366 flow [2024-06-27 18:34:18,318 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 18:34:18,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:18,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:18,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:34:18,319 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 18:34:18,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:18,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1331608064, now seen corresponding path program 2 times [2024-06-27 18:34:18,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:18,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809551480] [2024-06-27 18:34:18,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:18,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:19,046 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 18:34:19,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:19,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809551480] [2024-06-27 18:34:19,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809551480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:19,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:19,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:19,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972542761] [2024-06-27 18:34:19,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:19,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:19,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:19,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:19,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:19,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:19,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 216 transitions, 2366 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 18:34:19,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:19,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:19,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:19,573 INFO L124 PetriNetUnfolderBase]: 1149/1991 cut-off events. [2024-06-27 18:34:19,573 INFO L125 PetriNetUnfolderBase]: For 43702/43702 co-relation queries the response was YES. [2024-06-27 18:34:19,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11585 conditions, 1991 events. 1149/1991 cut-off events. For 43702/43702 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 10576 event pairs, 191 based on Foata normal form. 2/1951 useless extension candidates. Maximal degree in co-relation 11495. Up to 1674 conditions per place. [2024-06-27 18:34:19,591 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 213 selfloop transitions, 31 changer transitions 0/250 dead transitions. [2024-06-27 18:34:19,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 250 transitions, 2985 flow [2024-06-27 18:34:19,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 18:34:19,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:34:19,594 INFO L175 Difference]: Start difference. First operand has 201 places, 216 transitions, 2366 flow. Second operand 9 states and 144 transitions. [2024-06-27 18:34:19,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 250 transitions, 2985 flow [2024-06-27 18:34:19,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 250 transitions, 2903 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:19,737 INFO L231 Difference]: Finished difference. Result has 203 places, 217 transitions, 2367 flow [2024-06-27 18:34:19,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2367, PETRI_PLACES=203, PETRI_TRANSITIONS=217} [2024-06-27 18:34:19,738 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-27 18:34:19,738 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 217 transitions, 2367 flow [2024-06-27 18:34:19,738 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 18:34:19,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:19,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:19,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:34:19,739 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 18:34:19,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:19,739 INFO L85 PathProgramCache]: Analyzing trace with hash -236988030, now seen corresponding path program 3 times [2024-06-27 18:34:19,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:19,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682966126] [2024-06-27 18:34:19,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:19,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:20,448 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 18:34:20,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:20,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682966126] [2024-06-27 18:34:20,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682966126] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:20,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:20,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:20,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350023180] [2024-06-27 18:34:20,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:20,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:20,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:20,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:20,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:20,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:20,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 217 transitions, 2367 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 18:34:20,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:20,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:20,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:21,022 INFO L124 PetriNetUnfolderBase]: 1162/2014 cut-off events. [2024-06-27 18:34:21,023 INFO L125 PetriNetUnfolderBase]: For 44956/44956 co-relation queries the response was YES. [2024-06-27 18:34:21,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11680 conditions, 2014 events. 1162/2014 cut-off events. For 44956/44956 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10774 event pairs, 233 based on Foata normal form. 2/1974 useless extension candidates. Maximal degree in co-relation 11589. Up to 1631 conditions per place. [2024-06-27 18:34:21,042 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 203 selfloop transitions, 43 changer transitions 0/252 dead transitions. [2024-06-27 18:34:21,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 252 transitions, 3008 flow [2024-06-27 18:34:21,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:21,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:34:21,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43843843843843844 [2024-06-27 18:34:21,044 INFO L175 Difference]: Start difference. First operand has 203 places, 217 transitions, 2367 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:34:21,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 252 transitions, 3008 flow [2024-06-27 18:34:21,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 252 transitions, 2936 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:21,185 INFO L231 Difference]: Finished difference. Result has 205 places, 218 transitions, 2406 flow [2024-06-27 18:34:21,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2295, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2406, PETRI_PLACES=205, PETRI_TRANSITIONS=218} [2024-06-27 18:34:21,186 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 164 predicate places. [2024-06-27 18:34:21,186 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 218 transitions, 2406 flow [2024-06-27 18:34:21,186 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 18:34:21,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:21,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:21,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:34:21,187 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 18:34:21,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:21,187 INFO L85 PathProgramCache]: Analyzing trace with hash 2092987236, now seen corresponding path program 1 times [2024-06-27 18:34:21,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:21,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658771417] [2024-06-27 18:34:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:21,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:21,816 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 18:34:21,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:21,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658771417] [2024-06-27 18:34:21,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658771417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:21,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:21,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:21,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916048122] [2024-06-27 18:34:21,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:21,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:21,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:21,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:21,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:21,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:21,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 218 transitions, 2406 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 18:34:21,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:21,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:21,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:22,429 INFO L124 PetriNetUnfolderBase]: 1160/2011 cut-off events. [2024-06-27 18:34:22,430 INFO L125 PetriNetUnfolderBase]: For 44303/44303 co-relation queries the response was YES. [2024-06-27 18:34:22,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11685 conditions, 2011 events. 1160/2011 cut-off events. For 44303/44303 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10785 event pairs, 233 based on Foata normal form. 1/1970 useless extension candidates. Maximal degree in co-relation 11593. Up to 1630 conditions per place. [2024-06-27 18:34:22,445 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 201 selfloop transitions, 47 changer transitions 0/254 dead transitions. [2024-06-27 18:34:22,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 254 transitions, 3068 flow [2024-06-27 18:34:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:34:22,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:34:22,446 INFO L175 Difference]: Start difference. First operand has 205 places, 218 transitions, 2406 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:34:22,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 254 transitions, 3068 flow [2024-06-27 18:34:22,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 254 transitions, 2934 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:22,579 INFO L231 Difference]: Finished difference. Result has 207 places, 220 transitions, 2412 flow [2024-06-27 18:34:22,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2282, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2412, PETRI_PLACES=207, PETRI_TRANSITIONS=220} [2024-06-27 18:34:22,580 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-27 18:34:22,580 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 220 transitions, 2412 flow [2024-06-27 18:34:22,580 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 18:34:22,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:22,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:22,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:34:22,580 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 18:34:22,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:22,581 INFO L85 PathProgramCache]: Analyzing trace with hash 2092982400, now seen corresponding path program 4 times [2024-06-27 18:34:22,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:22,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24665304] [2024-06-27 18:34:22,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:22,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:23,316 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 18:34:23,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:23,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24665304] [2024-06-27 18:34:23,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24665304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:23,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:23,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:23,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659241691] [2024-06-27 18:34:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:23,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:23,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:23,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:23,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:23,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:23,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 220 transitions, 2412 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 18:34:23,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:23,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:23,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:23,886 INFO L124 PetriNetUnfolderBase]: 1175/2039 cut-off events. [2024-06-27 18:34:23,886 INFO L125 PetriNetUnfolderBase]: For 45758/45758 co-relation queries the response was YES. [2024-06-27 18:34:23,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11792 conditions, 2039 events. 1175/2039 cut-off events. For 45758/45758 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10984 event pairs, 236 based on Foata normal form. 2/1999 useless extension candidates. Maximal degree in co-relation 11699. Up to 1608 conditions per place. [2024-06-27 18:34:23,902 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 209 selfloop transitions, 43 changer transitions 0/258 dead transitions. [2024-06-27 18:34:23,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 258 transitions, 3103 flow [2024-06-27 18:34:23,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:23,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:23,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:34:23,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:34:23,904 INFO L175 Difference]: Start difference. First operand has 207 places, 220 transitions, 2412 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:34:23,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 258 transitions, 3103 flow [2024-06-27 18:34:24,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 258 transitions, 3010 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:24,041 INFO L231 Difference]: Finished difference. Result has 211 places, 224 transitions, 2497 flow [2024-06-27 18:34:24,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2497, PETRI_PLACES=211, PETRI_TRANSITIONS=224} [2024-06-27 18:34:24,041 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 170 predicate places. [2024-06-27 18:34:24,041 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 224 transitions, 2497 flow [2024-06-27 18:34:24,042 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 18:34:24,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:24,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:24,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:34:24,042 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 18:34:24,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:24,042 INFO L85 PathProgramCache]: Analyzing trace with hash -2114214782, now seen corresponding path program 1 times [2024-06-27 18:34:24,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:24,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842087720] [2024-06-27 18:34:24,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:24,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:24,624 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 18:34:24,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:24,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842087720] [2024-06-27 18:34:24,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842087720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:24,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:24,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:24,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243449827] [2024-06-27 18:34:24,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:24,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:24,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:24,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:24,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:24,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:24,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 224 transitions, 2497 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 18:34:24,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:24,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:24,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:25,195 INFO L124 PetriNetUnfolderBase]: 1195/2069 cut-off events. [2024-06-27 18:34:25,195 INFO L125 PetriNetUnfolderBase]: For 47536/47536 co-relation queries the response was YES. [2024-06-27 18:34:25,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12090 conditions, 2069 events. 1195/2069 cut-off events. For 47536/47536 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11140 event pairs, 235 based on Foata normal form. 2/2029 useless extension candidates. Maximal degree in co-relation 11994. Up to 1720 conditions per place. [2024-06-27 18:34:25,213 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 218 selfloop transitions, 42 changer transitions 0/266 dead transitions. [2024-06-27 18:34:25,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 266 transitions, 3233 flow [2024-06-27 18:34:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:25,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:25,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:34:25,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:34:25,215 INFO L175 Difference]: Start difference. First operand has 211 places, 224 transitions, 2497 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:34:25,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 266 transitions, 3233 flow [2024-06-27 18:34:25,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 266 transitions, 3156 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:25,383 INFO L231 Difference]: Finished difference. Result has 216 places, 227 transitions, 2574 flow [2024-06-27 18:34:25,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2420, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2574, PETRI_PLACES=216, PETRI_TRANSITIONS=227} [2024-06-27 18:34:25,383 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 175 predicate places. [2024-06-27 18:34:25,383 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 227 transitions, 2574 flow [2024-06-27 18:34:25,383 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 18:34:25,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:25,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:25,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:34:25,384 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 18:34:25,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:25,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1651443310, now seen corresponding path program 2 times [2024-06-27 18:34:25,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:25,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485379909] [2024-06-27 18:34:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:25,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:25,915 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 18:34:25,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:25,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485379909] [2024-06-27 18:34:25,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485379909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:25,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:25,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:25,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622936250] [2024-06-27 18:34:25,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:25,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:25,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:25,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:25,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:25,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:25,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 227 transitions, 2574 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 18:34:25,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:25,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:25,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:26,459 INFO L124 PetriNetUnfolderBase]: 1325/2264 cut-off events. [2024-06-27 18:34:26,459 INFO L125 PetriNetUnfolderBase]: For 64696/64696 co-relation queries the response was YES. [2024-06-27 18:34:26,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13927 conditions, 2264 events. 1325/2264 cut-off events. For 64696/64696 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12362 event pairs, 198 based on Foata normal form. 2/2223 useless extension candidates. Maximal degree in co-relation 13830. Up to 1509 conditions per place. [2024-06-27 18:34:26,479 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 197 selfloop transitions, 77 changer transitions 0/280 dead transitions. [2024-06-27 18:34:26,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 280 transitions, 3730 flow [2024-06-27 18:34:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:26,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:34:26,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:34:26,480 INFO L175 Difference]: Start difference. First operand has 216 places, 227 transitions, 2574 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:34:26,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 280 transitions, 3730 flow [2024-06-27 18:34:26,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 280 transitions, 3608 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:26,714 INFO L231 Difference]: Finished difference. Result has 221 places, 239 transitions, 2883 flow [2024-06-27 18:34:26,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2452, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2883, PETRI_PLACES=221, PETRI_TRANSITIONS=239} [2024-06-27 18:34:26,715 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 180 predicate places. [2024-06-27 18:34:26,715 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 239 transitions, 2883 flow [2024-06-27 18:34:26,715 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 18:34:26,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:26,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:26,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:34:26,716 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 18:34:26,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:26,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1281535808, now seen corresponding path program 3 times [2024-06-27 18:34:26,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:26,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572138453] [2024-06-27 18:34:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:26,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:27,252 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 18:34:27,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:27,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572138453] [2024-06-27 18:34:27,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572138453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:27,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:27,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:27,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569647818] [2024-06-27 18:34:27,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:27,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:27,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:27,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:27,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:27,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 239 transitions, 2883 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 18:34:27,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:27,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:27,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:27,786 INFO L124 PetriNetUnfolderBase]: 1319/2256 cut-off events. [2024-06-27 18:34:27,786 INFO L125 PetriNetUnfolderBase]: For 65900/65900 co-relation queries the response was YES. [2024-06-27 18:34:27,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14208 conditions, 2256 events. 1319/2256 cut-off events. For 65900/65900 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 12293 event pairs, 196 based on Foata normal form. 4/2217 useless extension candidates. Maximal degree in co-relation 14108. Up to 1508 conditions per place. [2024-06-27 18:34:27,808 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 193 selfloop transitions, 80 changer transitions 0/279 dead transitions. [2024-06-27 18:34:27,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 279 transitions, 3716 flow [2024-06-27 18:34:27,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:27,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:27,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:34:27,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:34:27,810 INFO L175 Difference]: Start difference. First operand has 221 places, 239 transitions, 2883 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:34:27,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 279 transitions, 3716 flow [2024-06-27 18:34:28,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 279 transitions, 3512 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:28,008 INFO L231 Difference]: Finished difference. Result has 226 places, 239 transitions, 2847 flow [2024-06-27 18:34:28,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2679, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2847, PETRI_PLACES=226, PETRI_TRANSITIONS=239} [2024-06-27 18:34:28,009 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 185 predicate places. [2024-06-27 18:34:28,009 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 239 transitions, 2847 flow [2024-06-27 18:34:28,009 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 18:34:28,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:28,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:28,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:34:28,010 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 18:34:28,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:28,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1154110310, now seen corresponding path program 1 times [2024-06-27 18:34:28,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:28,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184309961] [2024-06-27 18:34:28,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:28,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:28,657 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 18:34:28,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:28,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184309961] [2024-06-27 18:34:28,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184309961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:28,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:28,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:28,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672437847] [2024-06-27 18:34:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:28,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:28,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:28,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:28,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:28,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 239 transitions, 2847 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 18:34:28,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:28,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:28,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:29,359 INFO L124 PetriNetUnfolderBase]: 1313/2247 cut-off events. [2024-06-27 18:34:29,359 INFO L125 PetriNetUnfolderBase]: For 59544/59544 co-relation queries the response was YES. [2024-06-27 18:34:29,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13963 conditions, 2247 events. 1313/2247 cut-off events. For 59544/59544 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12229 event pairs, 199 based on Foata normal form. 3/2207 useless extension candidates. Maximal degree in co-relation 13861. Up to 1522 conditions per place. [2024-06-27 18:34:29,379 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 194 selfloop transitions, 84 changer transitions 0/284 dead transitions. [2024-06-27 18:34:29,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 284 transitions, 3789 flow [2024-06-27 18:34:29,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:29,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:34:29,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:34:29,381 INFO L175 Difference]: Start difference. First operand has 226 places, 239 transitions, 2847 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:34:29,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 284 transitions, 3789 flow [2024-06-27 18:34:29,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 284 transitions, 3610 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:29,585 INFO L231 Difference]: Finished difference. Result has 229 places, 246 transitions, 2995 flow [2024-06-27 18:34:29,585 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2687, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2995, PETRI_PLACES=229, PETRI_TRANSITIONS=246} [2024-06-27 18:34:29,587 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 188 predicate places. [2024-06-27 18:34:29,587 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 246 transitions, 2995 flow [2024-06-27 18:34:29,587 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 18:34:29,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:29,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:29,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:34:29,587 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 18:34:29,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:29,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1493766284, now seen corresponding path program 5 times [2024-06-27 18:34:29,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:29,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546529030] [2024-06-27 18:34:29,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:30,294 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 18:34:30,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:30,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546529030] [2024-06-27 18:34:30,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546529030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:30,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:30,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:30,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751015955] [2024-06-27 18:34:30,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:30,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:30,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:30,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:30,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:30,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:30,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 246 transitions, 2995 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 18:34:30,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:30,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:30,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:30,875 INFO L124 PetriNetUnfolderBase]: 1326/2270 cut-off events. [2024-06-27 18:34:30,875 INFO L125 PetriNetUnfolderBase]: For 60584/60584 co-relation queries the response was YES. [2024-06-27 18:34:30,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14321 conditions, 2270 events. 1326/2270 cut-off events. For 60584/60584 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12340 event pairs, 223 based on Foata normal form. 2/2229 useless extension candidates. Maximal degree in co-relation 14217. Up to 1820 conditions per place. [2024-06-27 18:34:30,896 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 221 selfloop transitions, 52 changer transitions 0/279 dead transitions. [2024-06-27 18:34:30,896 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 279 transitions, 3690 flow [2024-06-27 18:34:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:34:30,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:34:30,898 INFO L175 Difference]: Start difference. First operand has 229 places, 246 transitions, 2995 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:34:30,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 279 transitions, 3690 flow [2024-06-27 18:34:31,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 279 transitions, 3501 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:31,176 INFO L231 Difference]: Finished difference. Result has 231 places, 247 transitions, 2935 flow [2024-06-27 18:34:31,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2806, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2935, PETRI_PLACES=231, PETRI_TRANSITIONS=247} [2024-06-27 18:34:31,177 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 190 predicate places. [2024-06-27 18:34:31,177 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 247 transitions, 2935 flow [2024-06-27 18:34:31,177 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 18:34:31,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:31,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:31,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:34:31,178 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 18:34:31,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1493773228, now seen corresponding path program 4 times [2024-06-27 18:34:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:31,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088052678] [2024-06-27 18:34:31,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:31,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:31,690 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 18:34:31,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:31,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088052678] [2024-06-27 18:34:31,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088052678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:31,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:31,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:31,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3851503] [2024-06-27 18:34:31,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:31,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:31,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:31,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:31,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:31,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:31,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 247 transitions, 2935 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 18:34:31,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:31,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:31,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:32,342 INFO L124 PetriNetUnfolderBase]: 1346/2300 cut-off events. [2024-06-27 18:34:32,343 INFO L125 PetriNetUnfolderBase]: For 61803/61803 co-relation queries the response was YES. [2024-06-27 18:34:32,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14383 conditions, 2300 events. 1346/2300 cut-off events. For 61803/61803 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 12597 event pairs, 204 based on Foata normal form. 2/2259 useless extension candidates. Maximal degree in co-relation 14278. Up to 1534 conditions per place. [2024-06-27 18:34:32,366 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 201 selfloop transitions, 81 changer transitions 0/288 dead transitions. [2024-06-27 18:34:32,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 288 transitions, 3837 flow [2024-06-27 18:34:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:32,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:34:32,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702702702702703 [2024-06-27 18:34:32,367 INFO L175 Difference]: Start difference. First operand has 231 places, 247 transitions, 2935 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:34:32,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 288 transitions, 3837 flow [2024-06-27 18:34:32,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 288 transitions, 3719 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:32,605 INFO L231 Difference]: Finished difference. Result has 234 places, 250 transitions, 3053 flow [2024-06-27 18:34:32,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2817, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3053, PETRI_PLACES=234, PETRI_TRANSITIONS=250} [2024-06-27 18:34:32,606 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 193 predicate places. [2024-06-27 18:34:32,606 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 250 transitions, 3053 flow [2024-06-27 18:34:32,606 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 18:34:32,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:32,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:32,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:34:32,607 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 18:34:32,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:32,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1487337194, now seen corresponding path program 6 times [2024-06-27 18:34:32,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:32,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136388439] [2024-06-27 18:34:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:33,289 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 18:34:33,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:33,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136388439] [2024-06-27 18:34:33,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136388439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:33,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:33,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:33,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040392231] [2024-06-27 18:34:33,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:33,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:33,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:33,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:33,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:33,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:33,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 250 transitions, 3053 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 18:34:33,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:33,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:33,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:33,832 INFO L124 PetriNetUnfolderBase]: 1359/2323 cut-off events. [2024-06-27 18:34:33,833 INFO L125 PetriNetUnfolderBase]: For 64558/64558 co-relation queries the response was YES. [2024-06-27 18:34:33,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14654 conditions, 2323 events. 1359/2323 cut-off events. For 64558/64558 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12662 event pairs, 236 based on Foata normal form. 2/2282 useless extension candidates. Maximal degree in co-relation 14548. Up to 1873 conditions per place. [2024-06-27 18:34:33,855 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 230 selfloop transitions, 47 changer transitions 0/283 dead transitions. [2024-06-27 18:34:33,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 283 transitions, 3758 flow [2024-06-27 18:34:33,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:33,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:34:33,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:34:33,857 INFO L175 Difference]: Start difference. First operand has 234 places, 250 transitions, 3053 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:34:33,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 283 transitions, 3758 flow [2024-06-27 18:34:34,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 283 transitions, 3592 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:34,090 INFO L231 Difference]: Finished difference. Result has 236 places, 251 transitions, 3008 flow [2024-06-27 18:34:34,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2887, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3008, PETRI_PLACES=236, PETRI_TRANSITIONS=251} [2024-06-27 18:34:34,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 195 predicate places. [2024-06-27 18:34:34,090 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 251 transitions, 3008 flow [2024-06-27 18:34:34,090 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 18:34:34,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:34,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:34,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:34:34,091 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 18:34:34,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:34,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1487517118, now seen corresponding path program 5 times [2024-06-27 18:34:34,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:34,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772574008] [2024-06-27 18:34:34,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:34,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:34,488 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 18:34:34,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:34,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772574008] [2024-06-27 18:34:34,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772574008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:34,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:34,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:34,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108120968] [2024-06-27 18:34:34,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:34,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:34,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:34,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:34,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:34,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:34,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 251 transitions, 3008 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 18:34:34,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:34,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:34,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:35,127 INFO L124 PetriNetUnfolderBase]: 1368/2336 cut-off events. [2024-06-27 18:34:35,127 INFO L125 PetriNetUnfolderBase]: For 64632/64632 co-relation queries the response was YES. [2024-06-27 18:34:35,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14601 conditions, 2336 events. 1368/2336 cut-off events. For 64632/64632 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 12772 event pairs, 248 based on Foata normal form. 2/2295 useless extension candidates. Maximal degree in co-relation 14494. Up to 1563 conditions per place. [2024-06-27 18:34:35,150 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 207 selfloop transitions, 79 changer transitions 0/292 dead transitions. [2024-06-27 18:34:35,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 292 transitions, 3926 flow [2024-06-27 18:34:35,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:35,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:34:35,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:34:35,152 INFO L175 Difference]: Start difference. First operand has 236 places, 251 transitions, 3008 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:34:35,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 292 transitions, 3926 flow [2024-06-27 18:34:35,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 292 transitions, 3816 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:35,409 INFO L231 Difference]: Finished difference. Result has 239 places, 254 transitions, 3134 flow [2024-06-27 18:34:35,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2898, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3134, PETRI_PLACES=239, PETRI_TRANSITIONS=254} [2024-06-27 18:34:35,410 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 198 predicate places. [2024-06-27 18:34:35,410 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 254 transitions, 3134 flow [2024-06-27 18:34:35,410 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 18:34:35,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:35,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:35,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:34:35,411 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 18:34:35,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:35,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1487332544, now seen corresponding path program 7 times [2024-06-27 18:34:35,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:35,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856782526] [2024-06-27 18:34:35,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:35,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:35,962 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 18:34:35,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:35,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856782526] [2024-06-27 18:34:35,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856782526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:35,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:35,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:35,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499331114] [2024-06-27 18:34:35,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:35,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:35,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:35,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:35,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:36,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:36,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 254 transitions, 3134 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 18:34:36,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:36,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:36,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:36,570 INFO L124 PetriNetUnfolderBase]: 1381/2359 cut-off events. [2024-06-27 18:34:36,570 INFO L125 PetriNetUnfolderBase]: For 66822/66822 co-relation queries the response was YES. [2024-06-27 18:34:36,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14882 conditions, 2359 events. 1381/2359 cut-off events. For 66822/66822 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 12939 event pairs, 238 based on Foata normal form. 2/2318 useless extension candidates. Maximal degree in co-relation 14774. Up to 1850 conditions per place. [2024-06-27 18:34:36,593 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 232 selfloop transitions, 49 changer transitions 0/287 dead transitions. [2024-06-27 18:34:36,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 287 transitions, 3847 flow [2024-06-27 18:34:36,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:34:36,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:34:36,595 INFO L175 Difference]: Start difference. First operand has 239 places, 254 transitions, 3134 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:34:36,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 287 transitions, 3847 flow [2024-06-27 18:34:36,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 287 transitions, 3692 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:36,804 INFO L231 Difference]: Finished difference. Result has 241 places, 255 transitions, 3106 flow [2024-06-27 18:34:36,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2979, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3106, PETRI_PLACES=241, PETRI_TRANSITIONS=255} [2024-06-27 18:34:36,805 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-27 18:34:36,805 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 255 transitions, 3106 flow [2024-06-27 18:34:36,805 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 18:34:36,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:36,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:36,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:34:36,806 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 18:34:36,806 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:36,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1618499268, now seen corresponding path program 2 times [2024-06-27 18:34:36,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:36,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908247841] [2024-06-27 18:34:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:36,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:37,507 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 18:34:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:37,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908247841] [2024-06-27 18:34:37,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908247841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:37,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:37,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:37,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275979149] [2024-06-27 18:34:37,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:37,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:37,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:37,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:37,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:37,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 255 transitions, 3106 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 18:34:37,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:37,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:37,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:38,163 INFO L124 PetriNetUnfolderBase]: 1439/2448 cut-off events. [2024-06-27 18:34:38,163 INFO L125 PetriNetUnfolderBase]: For 75465/75471 co-relation queries the response was YES. [2024-06-27 18:34:38,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15546 conditions, 2448 events. 1439/2448 cut-off events. For 75465/75471 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13492 event pairs, 226 based on Foata normal form. 3/2404 useless extension candidates. Maximal degree in co-relation 15437. Up to 1277 conditions per place. [2024-06-27 18:34:38,186 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 190 selfloop transitions, 119 changer transitions 0/315 dead transitions. [2024-06-27 18:34:38,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 315 transitions, 4596 flow [2024-06-27 18:34:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:38,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:34:38,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:34:38,197 INFO L175 Difference]: Start difference. First operand has 241 places, 255 transitions, 3106 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:34:38,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 315 transitions, 4596 flow [2024-06-27 18:34:38,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 315 transitions, 4480 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:38,473 INFO L231 Difference]: Finished difference. Result has 246 places, 269 transitions, 3548 flow [2024-06-27 18:34:38,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3548, PETRI_PLACES=246, PETRI_TRANSITIONS=269} [2024-06-27 18:34:38,474 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-27 18:34:38,474 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 269 transitions, 3548 flow [2024-06-27 18:34:38,474 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 18:34:38,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:38,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:38,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:34:38,475 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 18:34:38,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:38,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1621124734, now seen corresponding path program 6 times [2024-06-27 18:34:38,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:38,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102073620] [2024-06-27 18:34:38,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:38,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:39,026 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 18:34:39,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:39,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102073620] [2024-06-27 18:34:39,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102073620] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:39,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:39,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:39,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357127062] [2024-06-27 18:34:39,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:39,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:39,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:39,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:39,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:39,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:39,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 269 transitions, 3548 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 18:34:39,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:39,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:39,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:39,667 INFO L124 PetriNetUnfolderBase]: 1479/2508 cut-off events. [2024-06-27 18:34:39,667 INFO L125 PetriNetUnfolderBase]: For 82164/82170 co-relation queries the response was YES. [2024-06-27 18:34:39,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16576 conditions, 2508 events. 1479/2508 cut-off events. For 82164/82170 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13861 event pairs, 238 based on Foata normal form. 4/2465 useless extension candidates. Maximal degree in co-relation 16464. Up to 1128 conditions per place. [2024-06-27 18:34:39,688 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 194 selfloop transitions, 124 changer transitions 0/324 dead transitions. [2024-06-27 18:34:39,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 324 transitions, 5028 flow [2024-06-27 18:34:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-06-27 18:34:39,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4972972972972973 [2024-06-27 18:34:39,690 INFO L175 Difference]: Start difference. First operand has 246 places, 269 transitions, 3548 flow. Second operand 10 states and 184 transitions. [2024-06-27 18:34:39,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 324 transitions, 5028 flow [2024-06-27 18:34:39,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 324 transitions, 4764 flow, removed 75 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:40,000 INFO L231 Difference]: Finished difference. Result has 252 places, 280 transitions, 3824 flow [2024-06-27 18:34:40,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3824, PETRI_PLACES=252, PETRI_TRANSITIONS=280} [2024-06-27 18:34:40,001 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 211 predicate places. [2024-06-27 18:34:40,001 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 280 transitions, 3824 flow [2024-06-27 18:34:40,001 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 18:34:40,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:40,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:40,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:34:40,001 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 18:34:40,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:40,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2073162224, now seen corresponding path program 8 times [2024-06-27 18:34:40,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:40,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069435708] [2024-06-27 18:34:40,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:40,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:40,630 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 18:34:40,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:40,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069435708] [2024-06-27 18:34:40,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069435708] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:40,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:40,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:40,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281911705] [2024-06-27 18:34:40,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:40,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:40,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:40,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:40,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:40,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:40,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 280 transitions, 3824 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 18:34:40,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:40,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:40,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:41,305 INFO L124 PetriNetUnfolderBase]: 1492/2531 cut-off events. [2024-06-27 18:34:41,306 INFO L125 PetriNetUnfolderBase]: For 79326/79332 co-relation queries the response was YES. [2024-06-27 18:34:41,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17000 conditions, 2531 events. 1492/2531 cut-off events. For 79326/79332 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 14011 event pairs, 172 based on Foata normal form. 2/2486 useless extension candidates. Maximal degree in co-relation 16885. Up to 1951 conditions per place. [2024-06-27 18:34:41,332 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 242 selfloop transitions, 64 changer transitions 0/312 dead transitions. [2024-06-27 18:34:41,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 312 transitions, 4597 flow [2024-06-27 18:34:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:34:41,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:34:41,334 INFO L175 Difference]: Start difference. First operand has 252 places, 280 transitions, 3824 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:34:41,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 312 transitions, 4597 flow [2024-06-27 18:34:41,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 312 transitions, 4305 flow, removed 65 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:41,670 INFO L231 Difference]: Finished difference. Result has 255 places, 281 transitions, 3691 flow [2024-06-27 18:34:41,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3532, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3691, PETRI_PLACES=255, PETRI_TRANSITIONS=281} [2024-06-27 18:34:41,671 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-27 18:34:41,671 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 281 transitions, 3691 flow [2024-06-27 18:34:41,671 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 18:34:41,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:41,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:41,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:34:41,671 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 18:34:41,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash 410689460, now seen corresponding path program 7 times [2024-06-27 18:34:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:41,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576000111] [2024-06-27 18:34:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:41,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:42,195 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 18:34:42,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:42,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576000111] [2024-06-27 18:34:42,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576000111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:42,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:42,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:42,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218043543] [2024-06-27 18:34:42,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:42,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:42,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:42,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:42,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 281 transitions, 3691 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 18:34:42,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:42,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:42,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:42,834 INFO L124 PetriNetUnfolderBase]: 1536/2597 cut-off events. [2024-06-27 18:34:42,834 INFO L125 PetriNetUnfolderBase]: For 84133/84139 co-relation queries the response was YES. [2024-06-27 18:34:42,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17299 conditions, 2597 events. 1536/2597 cut-off events. For 84133/84139 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14450 event pairs, 242 based on Foata normal form. 2/2552 useless extension candidates. Maximal degree in co-relation 17183. Up to 1178 conditions per place. [2024-06-27 18:34:42,861 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 188 selfloop transitions, 141 changer transitions 0/335 dead transitions. [2024-06-27 18:34:42,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 335 transitions, 5174 flow [2024-06-27 18:34:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:34:42,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:34:42,863 INFO L175 Difference]: Start difference. First operand has 255 places, 281 transitions, 3691 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:34:42,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 335 transitions, 5174 flow [2024-06-27 18:34:43,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 335 transitions, 5026 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:43,172 INFO L231 Difference]: Finished difference. Result has 260 places, 295 transitions, 4203 flow [2024-06-27 18:34:43,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3543, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4203, PETRI_PLACES=260, PETRI_TRANSITIONS=295} [2024-06-27 18:34:43,173 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 18:34:43,173 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 295 transitions, 4203 flow [2024-06-27 18:34:43,173 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 18:34:43,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:43,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:43,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:34:43,174 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 18:34:43,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:43,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1618253004, now seen corresponding path program 9 times [2024-06-27 18:34:43,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:43,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235286825] [2024-06-27 18:34:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:43,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:43,883 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 18:34:43,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235286825] [2024-06-27 18:34:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235286825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:43,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:43,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:43,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227540970] [2024-06-27 18:34:43,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:43,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:43,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:43,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:43,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:43,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:43,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 295 transitions, 4203 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 18:34:43,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:43,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:43,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:44,573 INFO L124 PetriNetUnfolderBase]: 1549/2620 cut-off events. [2024-06-27 18:34:44,574 INFO L125 PetriNetUnfolderBase]: For 87606/87612 co-relation queries the response was YES. [2024-06-27 18:34:44,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18087 conditions, 2620 events. 1549/2620 cut-off events. For 87606/87612 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14610 event pairs, 185 based on Foata normal form. 2/2575 useless extension candidates. Maximal degree in co-relation 17968. Up to 2040 conditions per place. [2024-06-27 18:34:44,601 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 260 selfloop transitions, 62 changer transitions 0/328 dead transitions. [2024-06-27 18:34:44,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 328 transitions, 5014 flow [2024-06-27 18:34:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:44,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:34:44,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:34:44,603 INFO L175 Difference]: Start difference. First operand has 260 places, 295 transitions, 4203 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:34:44,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 328 transitions, 5014 flow [2024-06-27 18:34:44,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 328 transitions, 4775 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:44,980 INFO L231 Difference]: Finished difference. Result has 263 places, 296 transitions, 4121 flow [2024-06-27 18:34:44,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3964, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4121, PETRI_PLACES=263, PETRI_TRANSITIONS=296} [2024-06-27 18:34:44,981 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 222 predicate places. [2024-06-27 18:34:44,981 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 296 transitions, 4121 flow [2024-06-27 18:34:44,981 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 18:34:44,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:44,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:44,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:34:44,982 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 18:34:44,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1618490588, now seen corresponding path program 8 times [2024-06-27 18:34:44,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:44,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242888282] [2024-06-27 18:34:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:44,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:44,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:45,519 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 18:34:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:45,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242888282] [2024-06-27 18:34:45,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242888282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:45,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:45,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:45,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199131154] [2024-06-27 18:34:45,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:45,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:45,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:45,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:45,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:45,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:45,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 296 transitions, 4121 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 18:34:45,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:45,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:45,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:46,231 INFO L124 PetriNetUnfolderBase]: 1569/2650 cut-off events. [2024-06-27 18:34:46,231 INFO L125 PetriNetUnfolderBase]: For 89810/89816 co-relation queries the response was YES. [2024-06-27 18:34:46,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 2650 events. 1569/2650 cut-off events. For 89810/89816 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14812 event pairs, 244 based on Foata normal form. 2/2605 useless extension candidates. Maximal degree in co-relation 17929. Up to 1208 conditions per place. [2024-06-27 18:34:46,259 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 201 selfloop transitions, 132 changer transitions 0/339 dead transitions. [2024-06-27 18:34:46,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 339 transitions, 5427 flow [2024-06-27 18:34:46,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:46,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:46,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 185 transitions. [2024-06-27 18:34:46,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:34:46,261 INFO L175 Difference]: Start difference. First operand has 263 places, 296 transitions, 4121 flow. Second operand 10 states and 185 transitions. [2024-06-27 18:34:46,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 339 transitions, 5427 flow [2024-06-27 18:34:46,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 339 transitions, 5281 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:46,613 INFO L231 Difference]: Finished difference. Result has 266 places, 299 transitions, 4319 flow [2024-06-27 18:34:46,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3975, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4319, PETRI_PLACES=266, PETRI_TRANSITIONS=299} [2024-06-27 18:34:46,615 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 225 predicate places. [2024-06-27 18:34:46,615 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 299 transitions, 4319 flow [2024-06-27 18:34:46,615 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 18:34:46,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:46,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:34:46,616 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 18:34:46,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1620885724, now seen corresponding path program 9 times [2024-06-27 18:34:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:46,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134651608] [2024-06-27 18:34:46,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:46,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:47,269 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 18:34:47,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:47,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134651608] [2024-06-27 18:34:47,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134651608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:47,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:47,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142079846] [2024-06-27 18:34:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:47,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:47,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:47,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:47,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 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 18:34:47,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:47,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:47,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:47,973 INFO L124 PetriNetUnfolderBase]: 1563/2640 cut-off events. [2024-06-27 18:34:47,973 INFO L125 PetriNetUnfolderBase]: For 87689/87695 co-relation queries the response was YES. [2024-06-27 18:34:47,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18084 conditions, 2640 events. 1563/2640 cut-off events. For 87689/87695 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14736 event pairs, 254 based on Foata normal form. 2/2595 useless extension candidates. Maximal degree in co-relation 17963. Up to 1204 conditions per place. [2024-06-27 18:34:48,002 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 200 selfloop transitions, 132 changer transitions 0/338 dead transitions. [2024-06-27 18:34:48,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 338 transitions, 5421 flow [2024-06-27 18:34:48,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:48,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 186 transitions. [2024-06-27 18:34:48,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027027027027027 [2024-06-27 18:34:48,004 INFO L175 Difference]: Start difference. First operand has 266 places, 299 transitions, 4319 flow. Second operand 10 states and 186 transitions. [2024-06-27 18:34:48,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 338 transitions, 5421 flow [2024-06-27 18:34:48,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 338 transitions, 5069 flow, removed 58 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:48,405 INFO L231 Difference]: Finished difference. Result has 269 places, 299 transitions, 4237 flow [2024-06-27 18:34:48,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3967, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4237, PETRI_PLACES=269, PETRI_TRANSITIONS=299} [2024-06-27 18:34:48,406 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 18:34:48,406 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 299 transitions, 4237 flow [2024-06-27 18:34:48,406 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 18:34:48,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:48,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:48,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:34:48,407 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 18:34:48,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:48,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1614445040, now seen corresponding path program 10 times [2024-06-27 18:34:48,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:48,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916671479] [2024-06-27 18:34:48,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:48,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:49,104 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 18:34:49,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:49,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916671479] [2024-06-27 18:34:49,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916671479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:49,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:49,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:49,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698958660] [2024-06-27 18:34:49,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:49,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:49,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:49,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:49,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:49,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 299 transitions, 4237 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 18:34:49,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:49,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:49,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:49,798 INFO L124 PetriNetUnfolderBase]: 1577/2666 cut-off events. [2024-06-27 18:34:49,798 INFO L125 PetriNetUnfolderBase]: For 89373/89379 co-relation queries the response was YES. [2024-06-27 18:34:49,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18208 conditions, 2666 events. 1577/2666 cut-off events. For 89373/89379 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14915 event pairs, 191 based on Foata normal form. 2/2621 useless extension candidates. Maximal degree in co-relation 18086. Up to 2006 conditions per place. [2024-06-27 18:34:49,880 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 260 selfloop transitions, 67 changer transitions 0/333 dead transitions. [2024-06-27 18:34:49,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 333 transitions, 5221 flow [2024-06-27 18:34:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:49,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:49,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:34:49,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44744744744744747 [2024-06-27 18:34:49,881 INFO L175 Difference]: Start difference. First operand has 269 places, 299 transitions, 4237 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:34:49,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 333 transitions, 5221 flow [2024-06-27 18:34:50,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 333 transitions, 4978 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:50,247 INFO L231 Difference]: Finished difference. Result has 271 places, 301 transitions, 4192 flow [2024-06-27 18:34:50,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3994, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4192, PETRI_PLACES=271, PETRI_TRANSITIONS=301} [2024-06-27 18:34:50,248 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 230 predicate places. [2024-06-27 18:34:50,248 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 301 transitions, 4192 flow [2024-06-27 18:34:50,248 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 18:34:50,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:50,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:50,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:34:50,249 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 18:34:50,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:50,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1277925152, now seen corresponding path program 10 times [2024-06-27 18:34:50,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:50,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506034498] [2024-06-27 18:34:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:50,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:50,832 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 18:34:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:50,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506034498] [2024-06-27 18:34:50,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506034498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:50,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:50,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:50,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433814709] [2024-06-27 18:34:50,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:50,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:50,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:50,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:50,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:50,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:50,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 301 transitions, 4192 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 18:34:50,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:50,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:50,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:51,665 INFO L124 PetriNetUnfolderBase]: 1657/2786 cut-off events. [2024-06-27 18:34:51,665 INFO L125 PetriNetUnfolderBase]: For 104451/104451 co-relation queries the response was YES. [2024-06-27 18:34:51,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19160 conditions, 2786 events. 1657/2786 cut-off events. For 104451/104451 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15642 event pairs, 298 based on Foata normal form. 4/2747 useless extension candidates. Maximal degree in co-relation 19037. Up to 2505 conditions per place. [2024-06-27 18:34:51,698 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 303 selfloop transitions, 37 changer transitions 0/346 dead transitions. [2024-06-27 18:34:51,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 346 transitions, 5455 flow [2024-06-27 18:34:51,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:51,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:34:51,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43783783783783786 [2024-06-27 18:34:51,700 INFO L175 Difference]: Start difference. First operand has 271 places, 301 transitions, 4192 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:34:51,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 346 transitions, 5455 flow [2024-06-27 18:34:52,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 346 transitions, 5338 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 18:34:52,175 INFO L231 Difference]: Finished difference. Result has 277 places, 312 transitions, 4471 flow [2024-06-27 18:34:52,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4471, PETRI_PLACES=277, PETRI_TRANSITIONS=312} [2024-06-27 18:34:52,176 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-27 18:34:52,176 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 312 transitions, 4471 flow [2024-06-27 18:34:52,176 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 18:34:52,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:52,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:52,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:34:52,177 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 18:34:52,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:52,177 INFO L85 PathProgramCache]: Analyzing trace with hash 982459998, now seen corresponding path program 11 times [2024-06-27 18:34:52,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:52,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193657954] [2024-06-27 18:34:52,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:52,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:52,909 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 18:34:52,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:52,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193657954] [2024-06-27 18:34:52,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193657954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:52,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:52,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:52,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558226141] [2024-06-27 18:34:52,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:52,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:52,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:52,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:52,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:52,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:52,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 312 transitions, 4471 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 18:34:52,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:52,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:52,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:53,610 INFO L124 PetriNetUnfolderBase]: 1654/2782 cut-off events. [2024-06-27 18:34:53,610 INFO L125 PetriNetUnfolderBase]: For 95007/95013 co-relation queries the response was YES. [2024-06-27 18:34:53,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19089 conditions, 2782 events. 1654/2782 cut-off events. For 95007/95013 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 15668 event pairs, 173 based on Foata normal form. 2/2737 useless extension candidates. Maximal degree in co-relation 18963. Up to 2202 conditions per place. [2024-06-27 18:34:53,641 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 267 selfloop transitions, 70 changer transitions 0/343 dead transitions. [2024-06-27 18:34:53,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 343 transitions, 5281 flow [2024-06-27 18:34:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:34:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:34:53,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:34:53,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:34:53,643 INFO L175 Difference]: Start difference. First operand has 277 places, 312 transitions, 4471 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:34:53,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 343 transitions, 5281 flow [2024-06-27 18:34:54,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 343 transitions, 5085 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-06-27 18:34:54,143 INFO L231 Difference]: Finished difference. Result has 279 places, 312 transitions, 4419 flow [2024-06-27 18:34:54,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4275, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4419, PETRI_PLACES=279, PETRI_TRANSITIONS=312} [2024-06-27 18:34:54,144 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 238 predicate places. [2024-06-27 18:34:54,144 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 312 transitions, 4419 flow [2024-06-27 18:34:54,144 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 18:34:54,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:54,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:54,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:34:54,145 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 18:34:54,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:54,145 INFO L85 PathProgramCache]: Analyzing trace with hash 979841166, now seen corresponding path program 11 times [2024-06-27 18:34:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686226885] [2024-06-27 18:34:54,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:54,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:54,548 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 18:34:54,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:54,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686226885] [2024-06-27 18:34:54,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686226885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:54,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:54,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:54,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966323662] [2024-06-27 18:34:54,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:54,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:54,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:54,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:54,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:54,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:54,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 312 transitions, 4419 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 18:34:54,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:54,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:54,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:55,298 INFO L124 PetriNetUnfolderBase]: 1674/2812 cut-off events. [2024-06-27 18:34:55,298 INFO L125 PetriNetUnfolderBase]: For 97046/97052 co-relation queries the response was YES. [2024-06-27 18:34:55,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19242 conditions, 2812 events. 1674/2812 cut-off events. For 97046/97052 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15892 event pairs, 184 based on Foata normal form. 2/2767 useless extension candidates. Maximal degree in co-relation 19115. Up to 1287 conditions per place. [2024-06-27 18:34:55,324 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 194 selfloop transitions, 155 changer transitions 0/355 dead transitions. [2024-06-27 18:34:55,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 355 transitions, 5798 flow [2024-06-27 18:34:55,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:55,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:55,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:34:55,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4918918918918919 [2024-06-27 18:34:55,326 INFO L175 Difference]: Start difference. First operand has 279 places, 312 transitions, 4419 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:34:55,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 355 transitions, 5798 flow [2024-06-27 18:34:55,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 355 transitions, 5648 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:55,855 INFO L231 Difference]: Finished difference. Result has 281 places, 315 transitions, 4668 flow [2024-06-27 18:34:55,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4269, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4668, PETRI_PLACES=281, PETRI_TRANSITIONS=315} [2024-06-27 18:34:55,856 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 18:34:55,856 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 315 transitions, 4668 flow [2024-06-27 18:34:55,856 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 18:34:55,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:55,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:55,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:34:55,857 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:34:55,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash 982705952, now seen corresponding path program 12 times [2024-06-27 18:34:55,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:55,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917362408] [2024-06-27 18:34:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:56,400 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 18:34:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:56,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917362408] [2024-06-27 18:34:56,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917362408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:56,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:56,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:56,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025473010] [2024-06-27 18:34:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:56,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:56,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:56,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:56,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:56,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:56,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 315 transitions, 4668 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 18:34:56,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:56,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:56,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:57,135 INFO L124 PetriNetUnfolderBase]: 1778/2969 cut-off events. [2024-06-27 18:34:57,135 INFO L125 PetriNetUnfolderBase]: For 122599/122605 co-relation queries the response was YES. [2024-06-27 18:34:57,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21407 conditions, 2969 events. 1778/2969 cut-off events. For 122599/122605 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 16892 event pairs, 199 based on Foata normal form. 4/2926 useless extension candidates. Maximal degree in co-relation 21279. Up to 1350 conditions per place. [2024-06-27 18:34:57,170 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 204 selfloop transitions, 160 changer transitions 0/370 dead transitions. [2024-06-27 18:34:57,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 370 transitions, 6430 flow [2024-06-27 18:34:57,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:34:57,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:34:57,172 INFO L175 Difference]: Start difference. First operand has 281 places, 315 transitions, 4668 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:34:57,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 370 transitions, 6430 flow [2024-06-27 18:34:57,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 370 transitions, 5985 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 18:34:57,746 INFO L231 Difference]: Finished difference. Result has 284 places, 328 transitions, 4965 flow [2024-06-27 18:34:57,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4259, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=147, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4965, PETRI_PLACES=284, PETRI_TRANSITIONS=328} [2024-06-27 18:34:57,747 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 243 predicate places. [2024-06-27 18:34:57,747 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 328 transitions, 4965 flow [2024-06-27 18:34:57,747 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 18:34:57,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:57,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:57,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:34:57,748 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 18:34:57,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1842770084, now seen corresponding path program 3 times [2024-06-27 18:34:57,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:57,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109009853] [2024-06-27 18:34:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:57,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:34:58,398 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 18:34:58,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:34:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109009853] [2024-06-27 18:34:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109009853] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:34:58,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:34:58,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:34:58,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643131955] [2024-06-27 18:34:58,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:34:58,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:34:58,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:34:58,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:34:58,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:34:58,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:34:58,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 328 transitions, 4965 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 18:34:58,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:34:58,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:34:58,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:34:59,200 INFO L124 PetriNetUnfolderBase]: 1772/2960 cut-off events. [2024-06-27 18:34:59,200 INFO L125 PetriNetUnfolderBase]: For 113235/113241 co-relation queries the response was YES. [2024-06-27 18:34:59,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21090 conditions, 2960 events. 1772/2960 cut-off events. For 113235/113241 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16836 event pairs, 180 based on Foata normal form. 3/2916 useless extension candidates. Maximal degree in co-relation 20960. Up to 1676 conditions per place. [2024-06-27 18:34:59,233 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 214 selfloop transitions, 153 changer transitions 0/373 dead transitions. [2024-06-27 18:34:59,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 373 transitions, 6443 flow [2024-06-27 18:34:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:34:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:34:59,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 18:34:59,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:34:59,234 INFO L175 Difference]: Start difference. First operand has 284 places, 328 transitions, 4965 flow. Second operand 10 states and 180 transitions. [2024-06-27 18:34:59,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 373 transitions, 6443 flow [2024-06-27 18:34:59,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 373 transitions, 6020 flow, removed 79 selfloop flow, removed 6 redundant places. [2024-06-27 18:34:59,781 INFO L231 Difference]: Finished difference. Result has 288 places, 331 transitions, 4935 flow [2024-06-27 18:34:59,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4935, PETRI_PLACES=288, PETRI_TRANSITIONS=331} [2024-06-27 18:34:59,782 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 247 predicate places. [2024-06-27 18:34:59,782 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 331 transitions, 4935 flow [2024-06-27 18:34:59,782 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 18:34:59,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:34:59,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:34:59,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:34:59,783 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 18:34:59,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:34:59,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1267805822, now seen corresponding path program 13 times [2024-06-27 18:34:59,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:34:59,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753479295] [2024-06-27 18:34:59,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:34:59,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:34:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:00,360 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 18:35:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:00,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753479295] [2024-06-27 18:35:00,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753479295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:00,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:00,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:35:00,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646562265] [2024-06-27 18:35:00,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:00,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:35:00,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:00,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:35:00,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:35:00,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:00,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 331 transitions, 4935 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 18:35:00,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:00,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:01,164 INFO L124 PetriNetUnfolderBase]: 1790/2988 cut-off events. [2024-06-27 18:35:01,165 INFO L125 PetriNetUnfolderBase]: For 112090/112096 co-relation queries the response was YES. [2024-06-27 18:35:01,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21019 conditions, 2988 events. 1790/2988 cut-off events. For 112090/112096 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 16969 event pairs, 179 based on Foata normal form. 4/2945 useless extension candidates. Maximal degree in co-relation 20888. Up to 1353 conditions per place. [2024-06-27 18:35:01,194 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 197 selfloop transitions, 172 changer transitions 0/375 dead transitions. [2024-06-27 18:35:01,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 375 transitions, 6400 flow [2024-06-27 18:35:01,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:01,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:01,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:35:01,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891891891891892 [2024-06-27 18:35:01,195 INFO L175 Difference]: Start difference. First operand has 288 places, 331 transitions, 4935 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:35:01,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 375 transitions, 6400 flow [2024-06-27 18:35:01,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 375 transitions, 6035 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:01,696 INFO L231 Difference]: Finished difference. Result has 291 places, 334 transitions, 5020 flow [2024-06-27 18:35:01,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4578, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5020, PETRI_PLACES=291, PETRI_TRANSITIONS=334} [2024-06-27 18:35:01,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 18:35:01,697 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 334 transitions, 5020 flow [2024-06-27 18:35:01,697 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 18:35:01,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:01,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:01,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:35:01,697 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 18:35:01,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:01,698 INFO L85 PathProgramCache]: Analyzing trace with hash 646873500, now seen corresponding path program 4 times [2024-06-27 18:35:01,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:01,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956688197] [2024-06-27 18:35:01,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:01,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:01,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:02,421 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 18:35:02,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:02,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956688197] [2024-06-27 18:35:02,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956688197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:02,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:02,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:35:02,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768205423] [2024-06-27 18:35:02,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:02,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:35:02,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:02,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:35:02,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:35:02,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:02,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 334 transitions, 5020 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 18:35:02,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:02,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:02,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:03,200 INFO L124 PetriNetUnfolderBase]: 1791/2989 cut-off events. [2024-06-27 18:35:03,201 INFO L125 PetriNetUnfolderBase]: For 104176/104188 co-relation queries the response was YES. [2024-06-27 18:35:03,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21042 conditions, 2989 events. 1791/2989 cut-off events. For 104176/104188 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 16977 event pairs, 273 based on Foata normal form. 9/2954 useless extension candidates. Maximal degree in co-relation 20910. Up to 2619 conditions per place. [2024-06-27 18:35:03,237 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 318 selfloop transitions, 62 changer transitions 0/386 dead transitions. [2024-06-27 18:35:03,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 386 transitions, 6309 flow [2024-06-27 18:35:03,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:03,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:35:03,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:35:03,238 INFO L175 Difference]: Start difference. First operand has 291 places, 334 transitions, 5020 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:35:03,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 386 transitions, 6309 flow [2024-06-27 18:35:03,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 386 transitions, 5713 flow, removed 91 selfloop flow, removed 10 redundant places. [2024-06-27 18:35:03,913 INFO L231 Difference]: Finished difference. Result has 291 places, 339 transitions, 4733 flow [2024-06-27 18:35:03,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4482, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4733, PETRI_PLACES=291, PETRI_TRANSITIONS=339} [2024-06-27 18:35:03,913 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 18:35:03,914 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 339 transitions, 4733 flow [2024-06-27 18:35:03,914 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 18:35:03,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:03,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:03,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:35:03,914 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 18:35:03,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:03,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1840135628, now seen corresponding path program 14 times [2024-06-27 18:35:03,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:03,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045902091] [2024-06-27 18:35:03,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:03,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:04,461 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 18:35:04,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:04,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045902091] [2024-06-27 18:35:04,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045902091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:04,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:04,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:35:04,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316128268] [2024-06-27 18:35:04,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:04,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:35:04,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:04,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:35:04,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:35:04,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:04,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 339 transitions, 4733 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 18:35:04,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:04,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:04,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:05,227 INFO L124 PetriNetUnfolderBase]: 1785/2979 cut-off events. [2024-06-27 18:35:05,227 INFO L125 PetriNetUnfolderBase]: For 98408/98414 co-relation queries the response was YES. [2024-06-27 18:35:05,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19939 conditions, 2979 events. 1785/2979 cut-off events. For 98408/98414 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 16951 event pairs, 201 based on Foata normal form. 2/2934 useless extension candidates. Maximal degree in co-relation 19808. Up to 1352 conditions per place. [2024-06-27 18:35:05,263 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 207 selfloop transitions, 165 changer transitions 0/378 dead transitions. [2024-06-27 18:35:05,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 378 transitions, 5951 flow [2024-06-27 18:35:05,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:05,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 18:35:05,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4945945945945946 [2024-06-27 18:35:05,265 INFO L175 Difference]: Start difference. First operand has 291 places, 339 transitions, 4733 flow. Second operand 10 states and 183 transitions. [2024-06-27 18:35:05,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 378 transitions, 5951 flow [2024-06-27 18:35:05,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 378 transitions, 5676 flow, removed 79 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:05,808 INFO L231 Difference]: Finished difference. Result has 293 places, 339 transitions, 4794 flow [2024-06-27 18:35:05,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4458, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4794, PETRI_PLACES=293, PETRI_TRANSITIONS=339} [2024-06-27 18:35:05,808 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-27 18:35:05,809 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 339 transitions, 4794 flow [2024-06-27 18:35:05,809 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 18:35:05,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:05,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:05,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:35:05,809 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 18:35:05,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:05,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1265171676, now seen corresponding path program 15 times [2024-06-27 18:35:05,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571611561] [2024-06-27 18:35:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:06,355 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 18:35:06,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571611561] [2024-06-27 18:35:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571611561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:35:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267381475] [2024-06-27 18:35:06,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:06,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:35:06,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:06,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:35:06,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:35:06,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:06,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 339 transitions, 4794 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 18:35:06,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:06,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:06,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:07,194 INFO L124 PetriNetUnfolderBase]: 1781/2973 cut-off events. [2024-06-27 18:35:07,194 INFO L125 PetriNetUnfolderBase]: For 95031/95037 co-relation queries the response was YES. [2024-06-27 18:35:07,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20060 conditions, 2973 events. 1781/2973 cut-off events. For 95031/95037 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16851 event pairs, 168 based on Foata normal form. 2/2928 useless extension candidates. Maximal degree in co-relation 19928. Up to 1351 conditions per place. [2024-06-27 18:35:07,237 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 193 selfloop transitions, 179 changer transitions 0/378 dead transitions. [2024-06-27 18:35:07,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 378 transitions, 6016 flow [2024-06-27 18:35:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:07,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:35:07,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4837837837837838 [2024-06-27 18:35:07,239 INFO L175 Difference]: Start difference. First operand has 293 places, 339 transitions, 4794 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:35:07,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 378 transitions, 6016 flow [2024-06-27 18:35:07,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 378 transitions, 5617 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:07,843 INFO L231 Difference]: Finished difference. Result has 296 places, 339 transitions, 4759 flow [2024-06-27 18:35:07,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4395, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4759, PETRI_PLACES=296, PETRI_TRANSITIONS=339} [2024-06-27 18:35:07,843 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 18:35:07,844 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 339 transitions, 4759 flow [2024-06-27 18:35:07,844 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 18:35:07,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:07,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:07,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:35:07,844 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 18:35:07,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:07,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1848476178, now seen corresponding path program 5 times [2024-06-27 18:35:07,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:07,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716223391] [2024-06-27 18:35:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:07,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:08,550 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 18:35:08,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:08,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716223391] [2024-06-27 18:35:08,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716223391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:08,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:08,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:35:08,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787405337] [2024-06-27 18:35:08,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:08,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:35:08,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:08,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:35:08,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:35:08,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:08,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 339 transitions, 4759 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 18:35:08,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:08,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:08,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:09,364 INFO L124 PetriNetUnfolderBase]: 1787/2981 cut-off events. [2024-06-27 18:35:09,364 INFO L125 PetriNetUnfolderBase]: For 93688/93688 co-relation queries the response was YES. [2024-06-27 18:35:09,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20017 conditions, 2981 events. 1787/2981 cut-off events. For 93688/93688 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 16893 event pairs, 308 based on Foata normal form. 3/2941 useless extension candidates. Maximal degree in co-relation 19884. Up to 2739 conditions per place. [2024-06-27 18:35:09,397 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 336 selfloop transitions, 34 changer transitions 0/376 dead transitions. [2024-06-27 18:35:09,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 376 transitions, 5756 flow [2024-06-27 18:35:09,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:09,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:09,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:35:09,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297297297297297 [2024-06-27 18:35:09,399 INFO L175 Difference]: Start difference. First operand has 296 places, 339 transitions, 4759 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:35:09,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 376 transitions, 5756 flow [2024-06-27 18:35:09,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 376 transitions, 5370 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:09,882 INFO L231 Difference]: Finished difference. Result has 299 places, 343 transitions, 4551 flow [2024-06-27 18:35:09,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4379, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4551, PETRI_PLACES=299, PETRI_TRANSITIONS=343} [2024-06-27 18:35:09,883 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 258 predicate places. [2024-06-27 18:35:09,883 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 343 transitions, 4551 flow [2024-06-27 18:35:09,883 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 18:35:09,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:09,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:35:09,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:35:09,884 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 18:35:09,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:09,884 INFO L85 PathProgramCache]: Analyzing trace with hash 647172030, now seen corresponding path program 6 times [2024-06-27 18:35:09,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:09,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623989450] [2024-06-27 18:35:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:09,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:10,580 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 18:35:10,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623989450] [2024-06-27 18:35:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623989450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:35:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271402978] [2024-06-27 18:35:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:35:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:10,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:35:10,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:35:10,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:10,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 343 transitions, 4551 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 18:35:10,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:10,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:10,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:11,392 INFO L124 PetriNetUnfolderBase]: 1783/2974 cut-off events. [2024-06-27 18:35:11,392 INFO L125 PetriNetUnfolderBase]: For 84175/84175 co-relation queries the response was YES. [2024-06-27 18:35:11,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19254 conditions, 2974 events. 1783/2974 cut-off events. For 84175/84175 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 16829 event pairs, 308 based on Foata normal form. 1/2932 useless extension candidates. Maximal degree in co-relation 19119. Up to 2713 conditions per place. [2024-06-27 18:35:11,427 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 334 selfloop transitions, 40 changer transitions 0/380 dead transitions. [2024-06-27 18:35:11,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 380 transitions, 5493 flow [2024-06-27 18:35:11,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:11,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:11,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:35:11,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42997542997543 [2024-06-27 18:35:11,429 INFO L175 Difference]: Start difference. First operand has 299 places, 343 transitions, 4551 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:35:11,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 380 transitions, 5493 flow [2024-06-27 18:35:11,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 380 transitions, 5336 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 18:35:11,872 INFO L231 Difference]: Finished difference. Result has 303 places, 344 transitions, 4510 flow [2024-06-27 18:35:11,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4406, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4510, PETRI_PLACES=303, PETRI_TRANSITIONS=344} [2024-06-27 18:35:11,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-27 18:35:11,873 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 344 transitions, 4510 flow [2024-06-27 18:35:11,873 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 18:35:11,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:11,873 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 18:35:11,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:35:11,874 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 18:35:11,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:11,874 INFO L85 PathProgramCache]: Analyzing trace with hash 398960442, now seen corresponding path program 1 times [2024-06-27 18:35:11,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:11,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539391817] [2024-06-27 18:35:11,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:11,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:12,618 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 18:35:12,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:12,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539391817] [2024-06-27 18:35:12,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539391817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:12,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:12,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:12,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359023054] [2024-06-27 18:35:12,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:12,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:12,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:12,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:12,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:12,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:12,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 344 transitions, 4510 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 18:35:12,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:12,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:12,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:13,526 INFO L124 PetriNetUnfolderBase]: 1801/3008 cut-off events. [2024-06-27 18:35:13,526 INFO L125 PetriNetUnfolderBase]: For 88630/88630 co-relation queries the response was YES. [2024-06-27 18:35:13,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19314 conditions, 3008 events. 1801/3008 cut-off events. For 88630/88630 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 17056 event pairs, 330 based on Foata normal form. 2/2968 useless extension candidates. Maximal degree in co-relation 19178. Up to 2670 conditions per place. [2024-06-27 18:35:13,558 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 344 selfloop transitions, 37 changer transitions 0/387 dead transitions. [2024-06-27 18:35:13,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 387 transitions, 5477 flow [2024-06-27 18:35:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:13,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:13,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:35:13,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43513513513513513 [2024-06-27 18:35:13,560 INFO L175 Difference]: Start difference. First operand has 303 places, 344 transitions, 4510 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:35:13,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 387 transitions, 5477 flow [2024-06-27 18:35:14,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 387 transitions, 5389 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:14,056 INFO L231 Difference]: Finished difference. Result has 307 places, 349 transitions, 4587 flow [2024-06-27 18:35:14,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4587, PETRI_PLACES=307, PETRI_TRANSITIONS=349} [2024-06-27 18:35:14,057 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-27 18:35:14,057 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 349 transitions, 4587 flow [2024-06-27 18:35:14,057 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 18:35:14,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:14,057 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 18:35:14,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:35:14,058 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 18:35:14,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2133993614, now seen corresponding path program 2 times [2024-06-27 18:35:14,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:14,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958584533] [2024-06-27 18:35:14,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:14,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:14,836 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 18:35:14,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:14,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958584533] [2024-06-27 18:35:14,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958584533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:14,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:14,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:14,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137756255] [2024-06-27 18:35:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:14,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:14,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:14,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:14,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:14,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 349 transitions, 4587 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 18:35:14,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:14,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:14,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:15,762 INFO L124 PetriNetUnfolderBase]: 1834/3063 cut-off events. [2024-06-27 18:35:15,762 INFO L125 PetriNetUnfolderBase]: For 97975/97975 co-relation queries the response was YES. [2024-06-27 18:35:15,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19910 conditions, 3063 events. 1834/3063 cut-off events. For 97975/97975 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17540 event pairs, 361 based on Foata normal form. 2/3023 useless extension candidates. Maximal degree in co-relation 19770. Up to 2582 conditions per place. [2024-06-27 18:35:15,797 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 334 selfloop transitions, 53 changer transitions 0/393 dead transitions. [2024-06-27 18:35:15,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 393 transitions, 5783 flow [2024-06-27 18:35:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:15,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:35:15,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:35:15,799 INFO L175 Difference]: Start difference. First operand has 307 places, 349 transitions, 4587 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:35:15,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 393 transitions, 5783 flow [2024-06-27 18:35:16,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 393 transitions, 5677 flow, removed 22 selfloop flow, removed 5 redundant places. [2024-06-27 18:35:16,438 INFO L231 Difference]: Finished difference. Result has 312 places, 353 transitions, 4702 flow [2024-06-27 18:35:16,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4481, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4702, PETRI_PLACES=312, PETRI_TRANSITIONS=353} [2024-06-27 18:35:16,439 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 271 predicate places. [2024-06-27 18:35:16,439 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 353 transitions, 4702 flow [2024-06-27 18:35:16,439 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 18:35:16,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:16,440 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 18:35:16,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:35:16,440 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 18:35:16,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:16,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1260247354, now seen corresponding path program 3 times [2024-06-27 18:35:16,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:16,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033223221] [2024-06-27 18:35:16,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:16,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:17,222 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 18:35:17,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:17,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033223221] [2024-06-27 18:35:17,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033223221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:17,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:17,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:17,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835352136] [2024-06-27 18:35:17,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:17,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:17,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:17,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:17,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:17,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:17,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 353 transitions, 4702 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 18:35:17,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:17,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:17,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:18,073 INFO L124 PetriNetUnfolderBase]: 1831/3058 cut-off events. [2024-06-27 18:35:18,073 INFO L125 PetriNetUnfolderBase]: For 94246/94246 co-relation queries the response was YES. [2024-06-27 18:35:18,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19853 conditions, 3058 events. 1831/3058 cut-off events. For 94246/94246 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 17461 event pairs, 369 based on Foata normal form. 2/3018 useless extension candidates. Maximal degree in co-relation 19712. Up to 2653 conditions per place. [2024-06-27 18:35:18,108 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 335 selfloop transitions, 51 changer transitions 0/392 dead transitions. [2024-06-27 18:35:18,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 392 transitions, 5630 flow [2024-06-27 18:35:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:18,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:18,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:35:18,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44054054054054054 [2024-06-27 18:35:18,110 INFO L175 Difference]: Start difference. First operand has 312 places, 353 transitions, 4702 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:35:18,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 392 transitions, 5630 flow [2024-06-27 18:35:18,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 392 transitions, 5470 flow, removed 47 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:18,627 INFO L231 Difference]: Finished difference. Result has 316 places, 353 transitions, 4650 flow [2024-06-27 18:35:18,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4542, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4650, PETRI_PLACES=316, PETRI_TRANSITIONS=353} [2024-06-27 18:35:18,628 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 275 predicate places. [2024-06-27 18:35:18,628 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 353 transitions, 4650 flow [2024-06-27 18:35:18,628 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 18:35:18,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:18,628 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 18:35:18,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:35:18,629 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 18:35:18,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:18,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1673549505, now seen corresponding path program 1 times [2024-06-27 18:35:18,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:18,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257929612] [2024-06-27 18:35:18,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:18,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:19,366 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 18:35:19,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:19,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257929612] [2024-06-27 18:35:19,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257929612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:19,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:19,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:19,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509070308] [2024-06-27 18:35:19,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:19,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:19,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:19,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:19,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:19,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:19,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 353 transitions, 4650 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 18:35:19,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:19,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:19,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:20,334 INFO L124 PetriNetUnfolderBase]: 1828/3053 cut-off events. [2024-06-27 18:35:20,335 INFO L125 PetriNetUnfolderBase]: For 88017/88017 co-relation queries the response was YES. [2024-06-27 18:35:20,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19703 conditions, 3053 events. 1828/3053 cut-off events. For 88017/88017 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 17444 event pairs, 367 based on Foata normal form. 1/3012 useless extension candidates. Maximal degree in co-relation 19560. Up to 2637 conditions per place. [2024-06-27 18:35:20,368 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 333 selfloop transitions, 55 changer transitions 0/394 dead transitions. [2024-06-27 18:35:20,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 394 transitions, 5638 flow [2024-06-27 18:35:20,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:20,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:35:20,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44324324324324327 [2024-06-27 18:35:20,370 INFO L175 Difference]: Start difference. First operand has 316 places, 353 transitions, 4650 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:35:20,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 394 transitions, 5638 flow [2024-06-27 18:35:20,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 394 transitions, 5479 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:20,829 INFO L231 Difference]: Finished difference. Result has 318 places, 355 transitions, 4669 flow [2024-06-27 18:35:20,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4511, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4669, PETRI_PLACES=318, PETRI_TRANSITIONS=355} [2024-06-27 18:35:20,830 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-27 18:35:20,830 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 355 transitions, 4669 flow [2024-06-27 18:35:20,830 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 18:35:20,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:20,830 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 18:35:20,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:35:20,831 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 18:35:20,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:20,831 INFO L85 PathProgramCache]: Analyzing trace with hash 457946622, now seen corresponding path program 4 times [2024-06-27 18:35:20,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:20,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071082834] [2024-06-27 18:35:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:20,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:21,507 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 18:35:21,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:21,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071082834] [2024-06-27 18:35:21,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071082834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:21,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:21,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:21,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116745561] [2024-06-27 18:35:21,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:21,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:21,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:21,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:21,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:21,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:21,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 355 transitions, 4669 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 18:35:21,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:21,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:21,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:22,359 INFO L124 PetriNetUnfolderBase]: 1851/3091 cut-off events. [2024-06-27 18:35:22,360 INFO L125 PetriNetUnfolderBase]: For 94408/94408 co-relation queries the response was YES. [2024-06-27 18:35:22,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19957 conditions, 3091 events. 1851/3091 cut-off events. For 94408/94408 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 17730 event pairs, 369 based on Foata normal form. 2/3051 useless extension candidates. Maximal degree in co-relation 19813. Up to 2549 conditions per place. [2024-06-27 18:35:22,396 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 346 selfloop transitions, 51 changer transitions 0/403 dead transitions. [2024-06-27 18:35:22,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 403 transitions, 5750 flow [2024-06-27 18:35:22,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:22,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:22,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:35:22,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:35:22,397 INFO L175 Difference]: Start difference. First operand has 318 places, 355 transitions, 4669 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:35:22,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 403 transitions, 5750 flow [2024-06-27 18:35:22,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 403 transitions, 5631 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:22,924 INFO L231 Difference]: Finished difference. Result has 322 places, 364 transitions, 4841 flow [2024-06-27 18:35:22,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4555, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4841, PETRI_PLACES=322, PETRI_TRANSITIONS=364} [2024-06-27 18:35:22,925 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 281 predicate places. [2024-06-27 18:35:22,925 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 364 transitions, 4841 flow [2024-06-27 18:35:22,925 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 18:35:22,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:22,925 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 18:35:22,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:35:22,925 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 18:35:22,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:22,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1073170066, now seen corresponding path program 5 times [2024-06-27 18:35:22,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:22,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754918494] [2024-06-27 18:35:22,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:22,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:23,648 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 18:35:23,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:23,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754918494] [2024-06-27 18:35:23,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754918494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:23,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:23,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:23,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681650121] [2024-06-27 18:35:23,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:23,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:23,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:23,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:23,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 364 transitions, 4841 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 18:35:23,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:23,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:23,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:24,472 INFO L124 PetriNetUnfolderBase]: 1866/3116 cut-off events. [2024-06-27 18:35:24,472 INFO L125 PetriNetUnfolderBase]: For 97103/97103 co-relation queries the response was YES. [2024-06-27 18:35:24,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20274 conditions, 3116 events. 1866/3116 cut-off events. For 97103/97103 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 17932 event pairs, 329 based on Foata normal form. 2/3075 useless extension candidates. Maximal degree in co-relation 20127. Up to 2556 conditions per place. [2024-06-27 18:35:24,513 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 323 selfloop transitions, 74 changer transitions 0/403 dead transitions. [2024-06-27 18:35:24,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 403 transitions, 5849 flow [2024-06-27 18:35:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:35:24,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-06-27 18:35:24,524 INFO L175 Difference]: Start difference. First operand has 322 places, 364 transitions, 4841 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:35:24,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 403 transitions, 5849 flow [2024-06-27 18:35:25,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 403 transitions, 5729 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:25,115 INFO L231 Difference]: Finished difference. Result has 326 places, 366 transitions, 4938 flow [2024-06-27 18:35:25,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4721, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4938, PETRI_PLACES=326, PETRI_TRANSITIONS=366} [2024-06-27 18:35:25,116 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 285 predicate places. [2024-06-27 18:35:25,116 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 366 transitions, 4938 flow [2024-06-27 18:35:25,116 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 18:35:25,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:25,116 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 18:35:25,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:35:25,117 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 18:35:25,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:25,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1417679487, now seen corresponding path program 1 times [2024-06-27 18:35:25,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:25,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590473869] [2024-06-27 18:35:25,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:25,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:25,856 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 18:35:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590473869] [2024-06-27 18:35:25,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590473869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:25,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:25,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884975545] [2024-06-27 18:35:25,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:25,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:25,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:25,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:25,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 366 transitions, 4938 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 18:35:25,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:25,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:25,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:26,848 INFO L124 PetriNetUnfolderBase]: 1946/3256 cut-off events. [2024-06-27 18:35:26,849 INFO L125 PetriNetUnfolderBase]: For 139453/139453 co-relation queries the response was YES. [2024-06-27 18:35:26,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21363 conditions, 3256 events. 1946/3256 cut-off events. For 139453/139453 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 18965 event pairs, 335 based on Foata normal form. 12/3225 useless extension candidates. Maximal degree in co-relation 21215. Up to 2364 conditions per place. [2024-06-27 18:35:26,887 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 311 selfloop transitions, 97 changer transitions 0/414 dead transitions. [2024-06-27 18:35:26,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 414 transitions, 6052 flow [2024-06-27 18:35:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:26,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:35:26,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 18:35:26,904 INFO L175 Difference]: Start difference. First operand has 326 places, 366 transitions, 4938 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:35:26,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 414 transitions, 6052 flow [2024-06-27 18:35:27,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 414 transitions, 5851 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:27,569 INFO L231 Difference]: Finished difference. Result has 329 places, 368 transitions, 5021 flow [2024-06-27 18:35:27,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4737, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5021, PETRI_PLACES=329, PETRI_TRANSITIONS=368} [2024-06-27 18:35:27,569 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 288 predicate places. [2024-06-27 18:35:27,569 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 368 transitions, 5021 flow [2024-06-27 18:35:27,569 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 18:35:27,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:27,570 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 18:35:27,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:35:27,570 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 18:35:27,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1425308184, now seen corresponding path program 6 times [2024-06-27 18:35:27,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:27,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658532945] [2024-06-27 18:35:27,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:27,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:28,321 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 18:35:28,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:28,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658532945] [2024-06-27 18:35:28,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658532945] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:28,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:28,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:28,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525549112] [2024-06-27 18:35:28,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:28,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:28,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:28,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:28,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:28,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:28,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 368 transitions, 5021 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 18:35:28,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:28,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:28,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:29,258 INFO L124 PetriNetUnfolderBase]: 1961/3281 cut-off events. [2024-06-27 18:35:29,258 INFO L125 PetriNetUnfolderBase]: For 105566/105566 co-relation queries the response was YES. [2024-06-27 18:35:29,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21661 conditions, 3281 events. 1961/3281 cut-off events. For 105566/105566 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 19172 event pairs, 368 based on Foata normal form. 2/3240 useless extension candidates. Maximal degree in co-relation 21512. Up to 2721 conditions per place. [2024-06-27 18:35:29,299 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 331 selfloop transitions, 70 changer transitions 0/407 dead transitions. [2024-06-27 18:35:29,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 407 transitions, 6043 flow [2024-06-27 18:35:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:35:29,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:35:29,301 INFO L175 Difference]: Start difference. First operand has 329 places, 368 transitions, 5021 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:35:29,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 407 transitions, 6043 flow [2024-06-27 18:35:29,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 407 transitions, 5799 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:29,885 INFO L231 Difference]: Finished difference. Result has 330 places, 370 transitions, 4992 flow [2024-06-27 18:35:29,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4777, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4992, PETRI_PLACES=330, PETRI_TRANSITIONS=370} [2024-06-27 18:35:29,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 289 predicate places. [2024-06-27 18:35:29,885 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 370 transitions, 4992 flow [2024-06-27 18:35:29,886 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 18:35:29,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:29,886 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 18:35:29,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:35:29,886 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 18:35:29,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash -937883790, now seen corresponding path program 7 times [2024-06-27 18:35:29,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:29,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413722808] [2024-06-27 18:35:29,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:29,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:30,552 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 18:35:30,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:30,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413722808] [2024-06-27 18:35:30,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413722808] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:30,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:30,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:30,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392748124] [2024-06-27 18:35:30,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:30,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:30,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:30,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:30,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:30,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:30,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 370 transitions, 4992 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 18:35:30,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:30,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:30,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:31,419 INFO L124 PetriNetUnfolderBase]: 1976/3306 cut-off events. [2024-06-27 18:35:31,420 INFO L125 PetriNetUnfolderBase]: For 106582/106582 co-relation queries the response was YES. [2024-06-27 18:35:31,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21501 conditions, 3306 events. 1976/3306 cut-off events. For 106582/106582 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 19380 event pairs, 367 based on Foata normal form. 2/3265 useless extension candidates. Maximal degree in co-relation 21351. Up to 2687 conditions per place. [2024-06-27 18:35:31,463 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 329 selfloop transitions, 74 changer transitions 0/409 dead transitions. [2024-06-27 18:35:31,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 409 transitions, 6020 flow [2024-06-27 18:35:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:35:31,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:35:31,465 INFO L175 Difference]: Start difference. First operand has 330 places, 370 transitions, 4992 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:35:31,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 409 transitions, 6020 flow [2024-06-27 18:35:32,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 409 transitions, 5821 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:32,035 INFO L231 Difference]: Finished difference. Result has 332 places, 372 transitions, 5020 flow [2024-06-27 18:35:32,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4793, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5020, PETRI_PLACES=332, PETRI_TRANSITIONS=372} [2024-06-27 18:35:32,036 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 291 predicate places. [2024-06-27 18:35:32,036 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 372 transitions, 5020 flow [2024-06-27 18:35:32,036 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 18:35:32,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:32,036 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 18:35:32,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:35:32,037 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 18:35:32,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:32,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1137180000, now seen corresponding path program 8 times [2024-06-27 18:35:32,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:32,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820386602] [2024-06-27 18:35:32,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:32,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:32,765 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 18:35:32,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:32,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820386602] [2024-06-27 18:35:32,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820386602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:32,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:32,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:32,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408234694] [2024-06-27 18:35:32,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:32,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:32,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:32,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:32,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:32,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 372 transitions, 5020 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 18:35:32,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:32,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:32,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:33,775 INFO L124 PetriNetUnfolderBase]: 1991/3331 cut-off events. [2024-06-27 18:35:33,775 INFO L125 PetriNetUnfolderBase]: For 110027/110027 co-relation queries the response was YES. [2024-06-27 18:35:33,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21687 conditions, 3331 events. 1991/3331 cut-off events. For 110027/110027 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 19517 event pairs, 395 based on Foata normal form. 2/3290 useless extension candidates. Maximal degree in co-relation 21536. Up to 2771 conditions per place. [2024-06-27 18:35:33,818 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 340 selfloop transitions, 65 changer transitions 0/411 dead transitions. [2024-06-27 18:35:33,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 411 transitions, 6058 flow [2024-06-27 18:35:33,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:33,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:35:33,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:35:33,820 INFO L175 Difference]: Start difference. First operand has 332 places, 372 transitions, 5020 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:35:33,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 411 transitions, 6058 flow [2024-06-27 18:35:34,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 411 transitions, 5847 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:34,393 INFO L231 Difference]: Finished difference. Result has 334 places, 374 transitions, 5022 flow [2024-06-27 18:35:34,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4809, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5022, PETRI_PLACES=334, PETRI_TRANSITIONS=374} [2024-06-27 18:35:34,394 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 293 predicate places. [2024-06-27 18:35:34,394 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 374 transitions, 5022 flow [2024-06-27 18:35:34,394 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 18:35:34,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:34,394 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 18:35:34,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:35:34,394 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 18:35:34,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:34,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1137185580, now seen corresponding path program 9 times [2024-06-27 18:35:34,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:34,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040890582] [2024-06-27 18:35:34,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:34,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:35,058 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 18:35:35,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:35,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040890582] [2024-06-27 18:35:35,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040890582] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:35,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:35,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:35,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427885381] [2024-06-27 18:35:35,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:35,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:35,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:35,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:35,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:35,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:35,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 374 transitions, 5022 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 18:35:35,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:35,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:35,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:36,197 INFO L124 PetriNetUnfolderBase]: 2006/3356 cut-off events. [2024-06-27 18:35:36,198 INFO L125 PetriNetUnfolderBase]: For 112609/112609 co-relation queries the response was YES. [2024-06-27 18:35:36,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21798 conditions, 3356 events. 2006/3356 cut-off events. For 112609/112609 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19722 event pairs, 394 based on Foata normal form. 2/3315 useless extension candidates. Maximal degree in co-relation 21646. Up to 2755 conditions per place. [2024-06-27 18:35:36,232 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 340 selfloop transitions, 67 changer transitions 0/413 dead transitions. [2024-06-27 18:35:36,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 413 transitions, 6066 flow [2024-06-27 18:35:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:36,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:35:36,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:35:36,234 INFO L175 Difference]: Start difference. First operand has 334 places, 374 transitions, 5022 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:35:36,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 413 transitions, 6066 flow [2024-06-27 18:35:36,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 413 transitions, 5869 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:36,846 INFO L231 Difference]: Finished difference. Result has 336 places, 376 transitions, 5046 flow [2024-06-27 18:35:36,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4825, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5046, PETRI_PLACES=336, PETRI_TRANSITIONS=376} [2024-06-27 18:35:36,847 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-27 18:35:36,847 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 376 transitions, 5046 flow [2024-06-27 18:35:36,847 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 18:35:36,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:36,847 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 18:35:36,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:35:36,848 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 18:35:36,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:36,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1137329730, now seen corresponding path program 10 times [2024-06-27 18:35:36,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:36,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361414748] [2024-06-27 18:35:36,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:36,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:37,582 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 18:35:37,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:37,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361414748] [2024-06-27 18:35:37,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361414748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:37,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:37,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:37,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585859338] [2024-06-27 18:35:37,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:37,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:37,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:37,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:37,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:37,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:37,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 376 transitions, 5046 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 18:35:37,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:37,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:37,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:38,610 INFO L124 PetriNetUnfolderBase]: 2021/3381 cut-off events. [2024-06-27 18:35:38,611 INFO L125 PetriNetUnfolderBase]: For 115657/115657 co-relation queries the response was YES. [2024-06-27 18:35:38,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21972 conditions, 3381 events. 2021/3381 cut-off events. For 115657/115657 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 19935 event pairs, 392 based on Foata normal form. 2/3340 useless extension candidates. Maximal degree in co-relation 21819. Up to 2639 conditions per place. [2024-06-27 18:35:38,656 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 334 selfloop transitions, 75 changer transitions 0/415 dead transitions. [2024-06-27 18:35:38,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 415 transitions, 6096 flow [2024-06-27 18:35:38,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:38,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:38,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:35:38,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45675675675675675 [2024-06-27 18:35:38,658 INFO L175 Difference]: Start difference. First operand has 336 places, 376 transitions, 5046 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:35:38,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 415 transitions, 6096 flow [2024-06-27 18:35:39,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 415 transitions, 5891 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:39,314 INFO L231 Difference]: Finished difference. Result has 338 places, 378 transitions, 5082 flow [2024-06-27 18:35:39,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4841, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5082, PETRI_PLACES=338, PETRI_TRANSITIONS=378} [2024-06-27 18:35:39,314 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 297 predicate places. [2024-06-27 18:35:39,314 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 378 transitions, 5082 flow [2024-06-27 18:35:39,314 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 18:35:39,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:39,315 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 18:35:39,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:35:39,315 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 18:35:39,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:39,315 INFO L85 PathProgramCache]: Analyzing trace with hash 317448702, now seen corresponding path program 11 times [2024-06-27 18:35:39,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:39,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166451894] [2024-06-27 18:35:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:39,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:40,104 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 18:35:40,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:40,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166451894] [2024-06-27 18:35:40,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166451894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:40,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:40,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:40,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10690774] [2024-06-27 18:35:40,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:40,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:40,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:40,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:40,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:40,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:40,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 378 transitions, 5082 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 18:35:40,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:40,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:40,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:40,979 INFO L124 PetriNetUnfolderBase]: 2036/3407 cut-off events. [2024-06-27 18:35:40,979 INFO L125 PetriNetUnfolderBase]: For 117037/117043 co-relation queries the response was YES. [2024-06-27 18:35:41,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22188 conditions, 3407 events. 2036/3407 cut-off events. For 117037/117043 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 20205 event pairs, 213 based on Foata normal form. 2/3362 useless extension candidates. Maximal degree in co-relation 22034. Up to 2551 conditions per place. [2024-06-27 18:35:41,032 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 300 selfloop transitions, 111 changer transitions 0/417 dead transitions. [2024-06-27 18:35:41,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 417 transitions, 6154 flow [2024-06-27 18:35:41,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 18:35:41,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4648648648648649 [2024-06-27 18:35:41,033 INFO L175 Difference]: Start difference. First operand has 338 places, 378 transitions, 5082 flow. Second operand 10 states and 172 transitions. [2024-06-27 18:35:41,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 417 transitions, 6154 flow [2024-06-27 18:35:41,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 417 transitions, 5929 flow, removed 39 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:41,732 INFO L231 Difference]: Finished difference. Result has 340 places, 380 transitions, 5174 flow [2024-06-27 18:35:41,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4857, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5174, PETRI_PLACES=340, PETRI_TRANSITIONS=380} [2024-06-27 18:35:41,733 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 18:35:41,733 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 380 transitions, 5174 flow [2024-06-27 18:35:41,733 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 18:35:41,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:41,733 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 18:35:41,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:35:41,733 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 18:35:41,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash 317725749, now seen corresponding path program 2 times [2024-06-27 18:35:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:41,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212324735] [2024-06-27 18:35:41,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:41,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:41,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:42,496 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 18:35:42,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:42,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212324735] [2024-06-27 18:35:42,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212324735] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:42,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:42,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388542263] [2024-06-27 18:35:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:42,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:42,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:42,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:42,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 380 transitions, 5174 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 18:35:42,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:42,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:42,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:43,574 INFO L124 PetriNetUnfolderBase]: 2116/3547 cut-off events. [2024-06-27 18:35:43,574 INFO L125 PetriNetUnfolderBase]: For 167867/167873 co-relation queries the response was YES. [2024-06-27 18:35:43,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23267 conditions, 3547 events. 2116/3547 cut-off events. For 167867/167873 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 21188 event pairs, 243 based on Foata normal form. 12/3512 useless extension candidates. Maximal degree in co-relation 23112. Up to 2121 conditions per place. [2024-06-27 18:35:43,620 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 260 selfloop transitions, 163 changer transitions 0/429 dead transitions. [2024-06-27 18:35:43,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 429 transitions, 6372 flow [2024-06-27 18:35:43,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:35:43,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 18:35:43,622 INFO L175 Difference]: Start difference. First operand has 340 places, 380 transitions, 5174 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:35:43,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 429 transitions, 6372 flow [2024-06-27 18:35:44,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 429 transitions, 6071 flow, removed 41 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:44,380 INFO L231 Difference]: Finished difference. Result has 343 places, 382 transitions, 5305 flow [2024-06-27 18:35:44,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4873, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5305, PETRI_PLACES=343, PETRI_TRANSITIONS=382} [2024-06-27 18:35:44,381 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 302 predicate places. [2024-06-27 18:35:44,381 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 382 transitions, 5305 flow [2024-06-27 18:35:44,404 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 18:35:44,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:44,404 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 18:35:44,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:35:44,405 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 18:35:44,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:44,405 INFO L85 PathProgramCache]: Analyzing trace with hash 391496108, now seen corresponding path program 12 times [2024-06-27 18:35:44,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:44,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136113947] [2024-06-27 18:35:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:44,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:45,218 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 18:35:45,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:45,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136113947] [2024-06-27 18:35:45,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136113947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:45,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:45,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:45,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119767419] [2024-06-27 18:35:45,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:45,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:45,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:45,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:45,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:45,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:45,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 382 transitions, 5305 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 18:35:45,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:45,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:45,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:46,372 INFO L124 PetriNetUnfolderBase]: 2131/3572 cut-off events. [2024-06-27 18:35:46,372 INFO L125 PetriNetUnfolderBase]: For 128823/128829 co-relation queries the response was YES. [2024-06-27 18:35:46,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23670 conditions, 3572 events. 2131/3572 cut-off events. For 128823/128829 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 21423 event pairs, 227 based on Foata normal form. 2/3527 useless extension candidates. Maximal degree in co-relation 23514. Up to 2716 conditions per place. [2024-06-27 18:35:46,412 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 301 selfloop transitions, 113 changer transitions 0/420 dead transitions. [2024-06-27 18:35:46,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 420 transitions, 6385 flow [2024-06-27 18:35:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:46,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:35:46,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4594594594594595 [2024-06-27 18:35:46,414 INFO L175 Difference]: Start difference. First operand has 343 places, 382 transitions, 5305 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:35:46,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 420 transitions, 6385 flow [2024-06-27 18:35:47,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 420 transitions, 5993 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:47,202 INFO L231 Difference]: Finished difference. Result has 344 places, 384 transitions, 5240 flow [2024-06-27 18:35:47,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4913, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5240, PETRI_PLACES=344, PETRI_TRANSITIONS=384} [2024-06-27 18:35:47,210 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 303 predicate places. [2024-06-27 18:35:47,210 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 384 transitions, 5240 flow [2024-06-27 18:35:47,210 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 18:35:47,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:47,211 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 18:35:47,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:35:47,211 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 18:35:47,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash 391490528, now seen corresponding path program 13 times [2024-06-27 18:35:47,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:47,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239627944] [2024-06-27 18:35:47,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:47,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:48,002 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 18:35:48,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:48,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239627944] [2024-06-27 18:35:48,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239627944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:48,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:48,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:48,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464705658] [2024-06-27 18:35:48,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:48,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:48,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:48,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:48,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:48,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:48,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 384 transitions, 5240 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 18:35:48,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:48,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:48,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:49,008 INFO L124 PetriNetUnfolderBase]: 2164/3627 cut-off events. [2024-06-27 18:35:49,009 INFO L125 PetriNetUnfolderBase]: For 138758/138764 co-relation queries the response was YES. [2024-06-27 18:35:49,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23932 conditions, 3627 events. 2164/3627 cut-off events. For 138758/138764 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 21872 event pairs, 245 based on Foata normal form. 2/3582 useless extension candidates. Maximal degree in co-relation 23775. Up to 2691 conditions per place. [2024-06-27 18:35:49,059 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 300 selfloop transitions, 119 changer transitions 0/425 dead transitions. [2024-06-27 18:35:49,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 425 transitions, 6620 flow [2024-06-27 18:35:49,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:35:49,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:35:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:35:49,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:35:49,061 INFO L175 Difference]: Start difference. First operand has 344 places, 384 transitions, 5240 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:35:49,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 425 transitions, 6620 flow [2024-06-27 18:35:49,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 425 transitions, 6309 flow, removed 44 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:49,970 INFO L231 Difference]: Finished difference. Result has 346 places, 388 transitions, 5368 flow [2024-06-27 18:35:49,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=4929, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5368, PETRI_PLACES=346, PETRI_TRANSITIONS=388} [2024-06-27 18:35:49,971 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 305 predicate places. [2024-06-27 18:35:49,971 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 388 transitions, 5368 flow [2024-06-27 18:35:49,971 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 18:35:49,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:49,971 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 18:35:49,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:35:49,972 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 18:35:49,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 647286183, now seen corresponding path program 3 times [2024-06-27 18:35:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:49,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411118458] [2024-06-27 18:35:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:49,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:50,683 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 18:35:50,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:50,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411118458] [2024-06-27 18:35:50,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411118458] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:50,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:50,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:50,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110710188] [2024-06-27 18:35:50,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:50,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:50,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:50,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:50,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:50,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:50,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 388 transitions, 5368 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 18:35:50,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:50,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:50,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:51,700 INFO L124 PetriNetUnfolderBase]: 2240/3761 cut-off events. [2024-06-27 18:35:51,700 INFO L125 PetriNetUnfolderBase]: For 192088/192094 co-relation queries the response was YES. [2024-06-27 18:35:51,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24690 conditions, 3761 events. 2240/3761 cut-off events. For 192088/192094 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 22803 event pairs, 239 based on Foata normal form. 14/3728 useless extension candidates. Maximal degree in co-relation 24532. Up to 2344 conditions per place. [2024-06-27 18:35:51,752 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 255 selfloop transitions, 176 changer transitions 0/437 dead transitions. [2024-06-27 18:35:51,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 437 transitions, 6590 flow [2024-06-27 18:35:51,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:35:51,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:35:51,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:35:51,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:35:51,758 INFO L175 Difference]: Start difference. First operand has 346 places, 388 transitions, 5368 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:35:51,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 437 transitions, 6590 flow [2024-06-27 18:35:52,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 437 transitions, 6266 flow, removed 88 selfloop flow, removed 6 redundant places. [2024-06-27 18:35:52,696 INFO L231 Difference]: Finished difference. Result has 352 places, 391 transitions, 5554 flow [2024-06-27 18:35:52,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5056, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5554, PETRI_PLACES=352, PETRI_TRANSITIONS=391} [2024-06-27 18:35:52,697 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-27 18:35:52,697 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 391 transitions, 5554 flow [2024-06-27 18:35:52,697 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 18:35:52,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:52,697 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 18:35:52,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:35:52,698 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 18:35:52,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash 972413253, now seen corresponding path program 4 times [2024-06-27 18:35:52,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:52,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158949302] [2024-06-27 18:35:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:52,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:53,476 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 18:35:53,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:53,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158949302] [2024-06-27 18:35:53,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158949302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:53,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:53,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:53,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018016316] [2024-06-27 18:35:53,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:53,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:53,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:53,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:53,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:53,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:53,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 391 transitions, 5554 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 18:35:53,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:53,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:53,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:54,649 INFO L124 PetriNetUnfolderBase]: 2351/3953 cut-off events. [2024-06-27 18:35:54,649 INFO L125 PetriNetUnfolderBase]: For 209967/209967 co-relation queries the response was YES. [2024-06-27 18:35:54,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27804 conditions, 3953 events. 2351/3953 cut-off events. For 209967/209967 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 24201 event pairs, 443 based on Foata normal form. 2/3912 useless extension candidates. Maximal degree in co-relation 27643. Up to 3482 conditions per place. [2024-06-27 18:35:54,707 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 391 selfloop transitions, 45 changer transitions 0/442 dead transitions. [2024-06-27 18:35:54,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 442 transitions, 7070 flow [2024-06-27 18:35:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:35:54,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:35:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-27 18:35:54,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44144144144144143 [2024-06-27 18:35:54,709 INFO L175 Difference]: Start difference. First operand has 352 places, 391 transitions, 5554 flow. Second operand 12 states and 196 transitions. [2024-06-27 18:35:54,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 442 transitions, 7070 flow [2024-06-27 18:35:55,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 442 transitions, 6622 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 18:35:55,773 INFO L231 Difference]: Finished difference. Result has 355 places, 395 transitions, 5421 flow [2024-06-27 18:35:55,773 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5106, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5421, PETRI_PLACES=355, PETRI_TRANSITIONS=395} [2024-06-27 18:35:55,773 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 314 predicate places. [2024-06-27 18:35:55,773 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 395 transitions, 5421 flow [2024-06-27 18:35:55,773 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 18:35:55,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:55,774 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 18:35:55,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:35:55,774 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 18:35:55,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:55,774 INFO L85 PathProgramCache]: Analyzing trace with hash 656540613, now seen corresponding path program 5 times [2024-06-27 18:35:55,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:55,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536321707] [2024-06-27 18:35:55,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:55,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:56,568 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 18:35:56,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:56,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536321707] [2024-06-27 18:35:56,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536321707] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:56,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:56,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:56,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26217243] [2024-06-27 18:35:56,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:56,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:56,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:56,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:56,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:56,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:56,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 395 transitions, 5421 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 18:35:56,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:56,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:56,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:35:57,815 INFO L124 PetriNetUnfolderBase]: 2366/3978 cut-off events. [2024-06-27 18:35:57,815 INFO L125 PetriNetUnfolderBase]: For 208704/208704 co-relation queries the response was YES. [2024-06-27 18:35:57,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27198 conditions, 3978 events. 2366/3978 cut-off events. For 208704/208704 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 24458 event pairs, 457 based on Foata normal form. 2/3937 useless extension candidates. Maximal degree in co-relation 27037. Up to 3699 conditions per place. [2024-06-27 18:35:57,869 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 390 selfloop transitions, 42 changer transitions 0/438 dead transitions. [2024-06-27 18:35:57,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 438 transitions, 6585 flow [2024-06-27 18:35:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:35:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:35:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 18:35:57,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-27 18:35:57,871 INFO L175 Difference]: Start difference. First operand has 355 places, 395 transitions, 5421 flow. Second operand 12 states and 190 transitions. [2024-06-27 18:35:57,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 438 transitions, 6585 flow [2024-06-27 18:35:59,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 438 transitions, 6374 flow, removed 78 selfloop flow, removed 8 redundant places. [2024-06-27 18:35:59,112 INFO L231 Difference]: Finished difference. Result has 359 places, 397 transitions, 5415 flow [2024-06-27 18:35:59,112 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5236, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5415, PETRI_PLACES=359, PETRI_TRANSITIONS=397} [2024-06-27 18:35:59,113 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 18:35:59,113 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 397 transitions, 5415 flow [2024-06-27 18:35:59,113 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 18:35:59,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:35:59,113 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 18:35:59,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:35:59,113 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 18:35:59,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:35:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 565610080, now seen corresponding path program 14 times [2024-06-27 18:35:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:35:59,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28570203] [2024-06-27 18:35:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:35:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:35:59,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:35:59,859 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 18:35:59,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:35:59,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28570203] [2024-06-27 18:35:59,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28570203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:35:59,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:35:59,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:35:59,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303911524] [2024-06-27 18:35:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:35:59,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:35:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:35:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:35:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:35:59,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:35:59,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 397 transitions, 5415 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 18:35:59,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:35:59,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:35:59,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:00,986 INFO L124 PetriNetUnfolderBase]: 2363/3974 cut-off events. [2024-06-27 18:36:00,986 INFO L125 PetriNetUnfolderBase]: For 193778/193784 co-relation queries the response was YES. [2024-06-27 18:36:01,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26614 conditions, 3974 events. 2363/3974 cut-off events. For 193778/193784 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 24458 event pairs, 290 based on Foata normal form. 2/3929 useless extension candidates. Maximal degree in co-relation 26451. Up to 3118 conditions per place. [2024-06-27 18:36:01,036 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 305 selfloop transitions, 122 changer transitions 0/433 dead transitions. [2024-06-27 18:36:01,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 433 transitions, 6429 flow [2024-06-27 18:36:01,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:36:01,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540540540540541 [2024-06-27 18:36:01,037 INFO L175 Difference]: Start difference. First operand has 359 places, 397 transitions, 5415 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:36:01,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 433 transitions, 6429 flow [2024-06-27 18:36:02,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 433 transitions, 6210 flow, removed 69 selfloop flow, removed 10 redundant places. [2024-06-27 18:36:02,198 INFO L231 Difference]: Finished difference. Result has 359 places, 397 transitions, 5445 flow [2024-06-27 18:36:02,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5196, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5445, PETRI_PLACES=359, PETRI_TRANSITIONS=397} [2024-06-27 18:36:02,198 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 18:36:02,198 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 397 transitions, 5445 flow [2024-06-27 18:36:02,198 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 18:36:02,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:02,199 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 18:36:02,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:36:02,199 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 18:36:02,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:02,199 INFO L85 PathProgramCache]: Analyzing trace with hash 656223483, now seen corresponding path program 6 times [2024-06-27 18:36:02,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:02,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904216937] [2024-06-27 18:36:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:02,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:02,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:02,995 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 18:36:02,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:02,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904216937] [2024-06-27 18:36:02,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904216937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:02,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:02,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:02,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032966666] [2024-06-27 18:36:02,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:02,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:02,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:02,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:02,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:03,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:03,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 397 transitions, 5445 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 18:36:03,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:03,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:03,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:04,285 INFO L124 PetriNetUnfolderBase]: 2347/3945 cut-off events. [2024-06-27 18:36:04,285 INFO L125 PetriNetUnfolderBase]: For 186206/186206 co-relation queries the response was YES. [2024-06-27 18:36:04,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25421 conditions, 3945 events. 2347/3945 cut-off events. For 186206/186206 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 24155 event pairs, 439 based on Foata normal form. 12/3914 useless extension candidates. Maximal degree in co-relation 25257. Up to 3565 conditions per place. [2024-06-27 18:36:04,332 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 396 selfloop transitions, 36 changer transitions 0/438 dead transitions. [2024-06-27 18:36:04,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 438 transitions, 6517 flow [2024-06-27 18:36:04,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:04,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:04,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:36:04,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43734643734643736 [2024-06-27 18:36:04,334 INFO L175 Difference]: Start difference. First operand has 359 places, 397 transitions, 5445 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:36:04,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 438 transitions, 6517 flow [2024-06-27 18:36:05,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 438 transitions, 6201 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:05,311 INFO L231 Difference]: Finished difference. Result has 361 places, 397 transitions, 5207 flow [2024-06-27 18:36:05,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5129, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5207, PETRI_PLACES=361, PETRI_TRANSITIONS=397} [2024-06-27 18:36:05,312 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-27 18:36:05,312 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 397 transitions, 5207 flow [2024-06-27 18:36:05,312 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 18:36:05,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:05,312 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 18:36:05,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:36:05,313 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 18:36:05,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:05,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1292358130, now seen corresponding path program 15 times [2024-06-27 18:36:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135443453] [2024-06-27 18:36:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:05,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:05,986 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 18:36:05,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:05,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135443453] [2024-06-27 18:36:05,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135443453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:05,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:05,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418718817] [2024-06-27 18:36:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:05,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:05,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:05,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:05,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:06,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:06,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 397 transitions, 5207 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 18:36:06,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:06,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:06,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:07,108 INFO L124 PetriNetUnfolderBase]: 2362/3971 cut-off events. [2024-06-27 18:36:07,108 INFO L125 PetriNetUnfolderBase]: For 133899/133905 co-relation queries the response was YES. [2024-06-27 18:36:07,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25006 conditions, 3971 events. 2362/3971 cut-off events. For 133899/133905 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 24372 event pairs, 295 based on Foata normal form. 2/3926 useless extension candidates. Maximal degree in co-relation 24841. Up to 3115 conditions per place. [2024-06-27 18:36:07,171 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 327 selfloop transitions, 103 changer transitions 0/436 dead transitions. [2024-06-27 18:36:07,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 436 transitions, 6335 flow [2024-06-27 18:36:07,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:07,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:07,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:36:07,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:36:07,172 INFO L175 Difference]: Start difference. First operand has 361 places, 397 transitions, 5207 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:36:07,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 436 transitions, 6335 flow [2024-06-27 18:36:08,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 436 transitions, 6251 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:36:08,185 INFO L231 Difference]: Finished difference. Result has 361 places, 399 transitions, 5442 flow [2024-06-27 18:36:08,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5123, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5442, PETRI_PLACES=361, PETRI_TRANSITIONS=399} [2024-06-27 18:36:08,186 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 320 predicate places. [2024-06-27 18:36:08,186 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 399 transitions, 5442 flow [2024-06-27 18:36:08,186 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 18:36:08,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:08,186 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 18:36:08,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:36:08,187 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 18:36:08,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1366405536, now seen corresponding path program 16 times [2024-06-27 18:36:08,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:08,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797717687] [2024-06-27 18:36:08,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:08,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:08,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:08,855 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 18:36:08,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:08,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797717687] [2024-06-27 18:36:08,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797717687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:08,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:08,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:08,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774019709] [2024-06-27 18:36:08,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:08,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:08,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:08,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:08,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:08,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:08,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 399 transitions, 5442 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 18:36:08,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:08,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:08,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:09,890 INFO L124 PetriNetUnfolderBase]: 2377/3996 cut-off events. [2024-06-27 18:36:09,891 INFO L125 PetriNetUnfolderBase]: For 140572/140578 co-relation queries the response was YES. [2024-06-27 18:36:09,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25630 conditions, 3996 events. 2377/3996 cut-off events. For 140572/140578 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24515 event pairs, 299 based on Foata normal form. 2/3951 useless extension candidates. Maximal degree in co-relation 25464. Up to 3140 conditions per place. [2024-06-27 18:36:09,947 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 328 selfloop transitions, 104 changer transitions 0/438 dead transitions. [2024-06-27 18:36:09,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 438 transitions, 6578 flow [2024-06-27 18:36:09,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:36:09,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:36:09,948 INFO L175 Difference]: Start difference. First operand has 361 places, 399 transitions, 5442 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:36:09,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 438 transitions, 6578 flow [2024-06-27 18:36:10,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 438 transitions, 6275 flow, removed 50 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:10,934 INFO L231 Difference]: Finished difference. Result has 363 places, 401 transitions, 5464 flow [2024-06-27 18:36:10,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5139, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5464, PETRI_PLACES=363, PETRI_TRANSITIONS=401} [2024-06-27 18:36:10,934 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 322 predicate places. [2024-06-27 18:36:10,935 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 401 transitions, 5464 flow [2024-06-27 18:36:10,935 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 18:36:10,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:10,935 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 18:36:10,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:36:10,935 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 18:36:10,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1292363710, now seen corresponding path program 17 times [2024-06-27 18:36:10,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:10,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143791226] [2024-06-27 18:36:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:10,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:11,700 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 18:36:11,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:11,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143791226] [2024-06-27 18:36:11,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143791226] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:11,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:11,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:11,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654031303] [2024-06-27 18:36:11,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:11,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:11,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:11,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:11,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:11,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:11,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 401 transitions, 5464 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 18:36:11,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:11,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:11,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:12,759 INFO L124 PetriNetUnfolderBase]: 2392/4021 cut-off events. [2024-06-27 18:36:12,759 INFO L125 PetriNetUnfolderBase]: For 143942/143948 co-relation queries the response was YES. [2024-06-27 18:36:12,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25800 conditions, 4021 events. 2392/4021 cut-off events. For 143942/143948 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24731 event pairs, 300 based on Foata normal form. 2/3976 useless extension candidates. Maximal degree in co-relation 25633. Up to 3106 conditions per place. [2024-06-27 18:36:12,816 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 327 selfloop transitions, 107 changer transitions 0/440 dead transitions. [2024-06-27 18:36:12,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 440 transitions, 6606 flow [2024-06-27 18:36:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:12,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:12,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:36:12,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47297297297297297 [2024-06-27 18:36:12,818 INFO L175 Difference]: Start difference. First operand has 363 places, 401 transitions, 5464 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:36:12,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 440 transitions, 6606 flow [2024-06-27 18:36:13,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 440 transitions, 6297 flow, removed 52 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:13,810 INFO L231 Difference]: Finished difference. Result has 365 places, 403 transitions, 5490 flow [2024-06-27 18:36:13,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5490, PETRI_PLACES=365, PETRI_TRANSITIONS=403} [2024-06-27 18:36:13,811 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-27 18:36:13,811 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 403 transitions, 5490 flow [2024-06-27 18:36:13,811 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 18:36:13,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:13,811 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 18:36:13,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:36:13,812 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 18:36:13,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:13,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1284729433, now seen corresponding path program 7 times [2024-06-27 18:36:13,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:13,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556204971] [2024-06-27 18:36:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:14,472 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 18:36:14,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:14,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556204971] [2024-06-27 18:36:14,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556204971] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:14,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:14,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:14,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251017621] [2024-06-27 18:36:14,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:14,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:14,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:14,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:14,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 403 transitions, 5490 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 18:36:14,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:14,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:14,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:15,623 INFO L124 PetriNetUnfolderBase]: 2454/4131 cut-off events. [2024-06-27 18:36:15,624 INFO L125 PetriNetUnfolderBase]: For 193980/193986 co-relation queries the response was YES. [2024-06-27 18:36:15,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26188 conditions, 4131 events. 2454/4131 cut-off events. For 193980/193986 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 25590 event pairs, 342 based on Foata normal form. 12/4096 useless extension candidates. Maximal degree in co-relation 26020. Up to 2695 conditions per place. [2024-06-27 18:36:15,682 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 288 selfloop transitions, 157 changer transitions 0/451 dead transitions. [2024-06-27 18:36:15,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 451 transitions, 6726 flow [2024-06-27 18:36:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:15,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:36:15,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 18:36:15,684 INFO L175 Difference]: Start difference. First operand has 365 places, 403 transitions, 5490 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:36:15,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 451 transitions, 6726 flow [2024-06-27 18:36:16,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 451 transitions, 6407 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:16,656 INFO L231 Difference]: Finished difference. Result has 368 places, 405 transitions, 5613 flow [2024-06-27 18:36:16,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5171, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5613, PETRI_PLACES=368, PETRI_TRANSITIONS=405} [2024-06-27 18:36:16,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 18:36:16,657 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 405 transitions, 5613 flow [2024-06-27 18:36:16,657 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 18:36:16,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:16,657 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 18:36:16,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:36:16,658 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 18:36:16,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:16,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1491659920, now seen corresponding path program 18 times [2024-06-27 18:36:16,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:16,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353486138] [2024-06-27 18:36:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:16,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:17,444 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 18:36:17,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:17,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353486138] [2024-06-27 18:36:17,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353486138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:17,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:17,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:17,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243747453] [2024-06-27 18:36:17,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:17,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:17,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:17,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:17,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:17,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:17,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 405 transitions, 5613 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 18:36:17,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:17,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:17,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:18,606 INFO L124 PetriNetUnfolderBase]: 2469/4156 cut-off events. [2024-06-27 18:36:18,606 INFO L125 PetriNetUnfolderBase]: For 142869/142875 co-relation queries the response was YES. [2024-06-27 18:36:18,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26574 conditions, 4156 events. 2469/4156 cut-off events. For 142869/142875 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 25808 event pairs, 318 based on Foata normal form. 2/4111 useless extension candidates. Maximal degree in co-relation 26405. Up to 3300 conditions per place. [2024-06-27 18:36:18,664 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 328 selfloop transitions, 109 changer transitions 0/443 dead transitions. [2024-06-27 18:36:18,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 443 transitions, 6765 flow [2024-06-27 18:36:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:18,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:36:18,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:36:18,666 INFO L175 Difference]: Start difference. First operand has 368 places, 405 transitions, 5613 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:36:18,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 443 transitions, 6765 flow [2024-06-27 18:36:19,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 443 transitions, 6363 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:19,843 INFO L231 Difference]: Finished difference. Result has 369 places, 407 transitions, 5556 flow [2024-06-27 18:36:19,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5211, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5556, PETRI_PLACES=369, PETRI_TRANSITIONS=407} [2024-06-27 18:36:19,844 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 328 predicate places. [2024-06-27 18:36:19,844 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 407 transitions, 5556 flow [2024-06-27 18:36:19,844 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 18:36:19,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:19,845 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 18:36:19,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:36:19,845 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 18:36:19,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:19,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1491665500, now seen corresponding path program 19 times [2024-06-27 18:36:19,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:19,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182778007] [2024-06-27 18:36:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:19,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:20,577 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 18:36:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:20,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182778007] [2024-06-27 18:36:20,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182778007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:20,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:20,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:20,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616126011] [2024-06-27 18:36:20,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:20,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:20,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:20,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:20,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:20,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 407 transitions, 5556 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 18:36:20,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:20,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:20,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:21,693 INFO L124 PetriNetUnfolderBase]: 2484/4181 cut-off events. [2024-06-27 18:36:21,693 INFO L125 PetriNetUnfolderBase]: For 139888/139894 co-relation queries the response was YES. [2024-06-27 18:36:21,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26248 conditions, 4181 events. 2484/4181 cut-off events. For 139888/139894 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25952 event pairs, 318 based on Foata normal form. 2/4136 useless extension candidates. Maximal degree in co-relation 26078. Up to 3284 conditions per place. [2024-06-27 18:36:21,751 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 328 selfloop transitions, 111 changer transitions 0/445 dead transitions. [2024-06-27 18:36:21,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 445 transitions, 6714 flow [2024-06-27 18:36:21,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:21,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:21,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:36:21,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46756756756756757 [2024-06-27 18:36:21,753 INFO L175 Difference]: Start difference. First operand has 369 places, 407 transitions, 5556 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:36:21,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 445 transitions, 6714 flow [2024-06-27 18:36:22,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 445 transitions, 6385 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:22,745 INFO L231 Difference]: Finished difference. Result has 371 places, 409 transitions, 5580 flow [2024-06-27 18:36:22,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5227, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5580, PETRI_PLACES=371, PETRI_TRANSITIONS=409} [2024-06-27 18:36:22,745 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 330 predicate places. [2024-06-27 18:36:22,745 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 409 transitions, 5580 flow [2024-06-27 18:36:22,745 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 18:36:22,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:22,746 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 18:36:22,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:36:22,746 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 18:36:22,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1491809650, now seen corresponding path program 20 times [2024-06-27 18:36:22,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:22,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350312748] [2024-06-27 18:36:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:23,496 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 18:36:23,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:23,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350312748] [2024-06-27 18:36:23,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350312748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:23,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:23,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:23,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287418472] [2024-06-27 18:36:23,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:23,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:23,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:23,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:23,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:23,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:23,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 409 transitions, 5580 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 18:36:23,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:23,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:23,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:24,551 INFO L124 PetriNetUnfolderBase]: 2484/4175 cut-off events. [2024-06-27 18:36:24,551 INFO L125 PetriNetUnfolderBase]: For 129708/129714 co-relation queries the response was YES. [2024-06-27 18:36:24,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25910 conditions, 4175 events. 2484/4175 cut-off events. For 129708/129714 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 25857 event pairs, 323 based on Foata normal form. 2/4132 useless extension candidates. Maximal degree in co-relation 25739. Up to 3048 conditions per place. [2024-06-27 18:36:24,610 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 314 selfloop transitions, 127 changer transitions 0/447 dead transitions. [2024-06-27 18:36:24,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 447 transitions, 6744 flow [2024-06-27 18:36:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:36:24,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:36:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 171 transitions. [2024-06-27 18:36:24,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46216216216216216 [2024-06-27 18:36:24,611 INFO L175 Difference]: Start difference. First operand has 371 places, 409 transitions, 5580 flow. Second operand 10 states and 171 transitions. [2024-06-27 18:36:24,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 447 transitions, 6744 flow [2024-06-27 18:36:25,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 447 transitions, 6407 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:25,574 INFO L231 Difference]: Finished difference. Result has 373 places, 411 transitions, 5632 flow [2024-06-27 18:36:25,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5243, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5632, PETRI_PLACES=373, PETRI_TRANSITIONS=411} [2024-06-27 18:36:25,574 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-27 18:36:25,574 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 411 transitions, 5632 flow [2024-06-27 18:36:25,574 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 18:36:25,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:25,575 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 18:36:25,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:36:25,575 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 18:36:25,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:25,575 INFO L85 PathProgramCache]: Analyzing trace with hash 580139237, now seen corresponding path program 1 times [2024-06-27 18:36:25,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:25,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069359732] [2024-06-27 18:36:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:25,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:26,260 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 18:36:26,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:26,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069359732] [2024-06-27 18:36:26,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069359732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:26,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:26,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:26,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140710182] [2024-06-27 18:36:26,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:26,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:26,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:26,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:26,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:26,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:26,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 411 transitions, 5632 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 18:36:26,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:26,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:26,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:27,524 INFO L124 PetriNetUnfolderBase]: 2502/4204 cut-off events. [2024-06-27 18:36:27,524 INFO L125 PetriNetUnfolderBase]: For 131841/131841 co-relation queries the response was YES. [2024-06-27 18:36:27,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26150 conditions, 4204 events. 2502/4204 cut-off events. For 131841/131841 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 25986 event pairs, 570 based on Foata normal form. 2/4166 useless extension candidates. Maximal degree in co-relation 25978. Up to 3835 conditions per place. [2024-06-27 18:36:27,580 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 412 selfloop transitions, 40 changer transitions 0/458 dead transitions. [2024-06-27 18:36:27,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 458 transitions, 6928 flow [2024-06-27 18:36:27,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:27,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:36:27,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4275184275184275 [2024-06-27 18:36:27,581 INFO L175 Difference]: Start difference. First operand has 373 places, 411 transitions, 5632 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:36:27,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 458 transitions, 6928 flow [2024-06-27 18:36:28,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 458 transitions, 6555 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:28,661 INFO L231 Difference]: Finished difference. Result has 377 places, 415 transitions, 5589 flow [2024-06-27 18:36:28,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5259, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5589, PETRI_PLACES=377, PETRI_TRANSITIONS=415} [2024-06-27 18:36:28,662 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 336 predicate places. [2024-06-27 18:36:28,662 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 415 transitions, 5589 flow [2024-06-27 18:36:28,662 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 18:36:28,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:28,662 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 18:36:28,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:36:28,663 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 18:36:28,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1311445087, now seen corresponding path program 2 times [2024-06-27 18:36:28,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:28,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671352629] [2024-06-27 18:36:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:28,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:29,467 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 18:36:29,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:29,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671352629] [2024-06-27 18:36:29,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671352629] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:29,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:29,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951890914] [2024-06-27 18:36:29,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:29,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:29,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:29,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:29,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:29,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:29,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 415 transitions, 5589 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 18:36:29,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:29,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:29,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:30,758 INFO L124 PetriNetUnfolderBase]: 2540/4270 cut-off events. [2024-06-27 18:36:30,759 INFO L125 PetriNetUnfolderBase]: For 147600/147600 co-relation queries the response was YES. [2024-06-27 18:36:30,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26497 conditions, 4270 events. 2540/4270 cut-off events. For 147600/147600 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 26652 event pairs, 610 based on Foata normal form. 2/4232 useless extension candidates. Maximal degree in co-relation 26323. Up to 3598 conditions per place. [2024-06-27 18:36:30,819 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 399 selfloop transitions, 63 changer transitions 0/468 dead transitions. [2024-06-27 18:36:30,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 468 transitions, 7308 flow [2024-06-27 18:36:30,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:36:30,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520884520884521 [2024-06-27 18:36:30,821 INFO L175 Difference]: Start difference. First operand has 377 places, 415 transitions, 5589 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:36:30,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 468 transitions, 7308 flow [2024-06-27 18:36:32,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 468 transitions, 7038 flow, removed 110 selfloop flow, removed 7 redundant places. [2024-06-27 18:36:32,109 INFO L231 Difference]: Finished difference. Result has 384 places, 423 transitions, 5891 flow [2024-06-27 18:36:32,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5319, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5891, PETRI_PLACES=384, PETRI_TRANSITIONS=423} [2024-06-27 18:36:32,109 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 343 predicate places. [2024-06-27 18:36:32,109 INFO L495 AbstractCegarLoop]: Abstraction has has 384 places, 423 transitions, 5891 flow [2024-06-27 18:36:32,109 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 18:36:32,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:32,110 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 18:36:32,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:36:32,110 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 18:36:32,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:32,111 INFO L85 PathProgramCache]: Analyzing trace with hash -753842499, now seen corresponding path program 3 times [2024-06-27 18:36:32,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:32,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849932295] [2024-06-27 18:36:32,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:32,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:32,918 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 18:36:32,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:32,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849932295] [2024-06-27 18:36:32,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849932295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:32,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:32,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:32,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756236879] [2024-06-27 18:36:32,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:32,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:32,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:33,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:33,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 423 transitions, 5891 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 18:36:33,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:33,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:33,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:34,214 INFO L124 PetriNetUnfolderBase]: 2555/4295 cut-off events. [2024-06-27 18:36:34,214 INFO L125 PetriNetUnfolderBase]: For 150069/150069 co-relation queries the response was YES. [2024-06-27 18:36:34,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26797 conditions, 4295 events. 2555/4295 cut-off events. For 150069/150069 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 26823 event pairs, 599 based on Foata normal form. 2/4257 useless extension candidates. Maximal degree in co-relation 26618. Up to 3722 conditions per place. [2024-06-27 18:36:34,275 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 399 selfloop transitions, 65 changer transitions 0/470 dead transitions. [2024-06-27 18:36:34,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 470 transitions, 7331 flow [2024-06-27 18:36:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:34,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:36:34,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:36:34,277 INFO L175 Difference]: Start difference. First operand has 384 places, 423 transitions, 5891 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:36:34,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 470 transitions, 7331 flow [2024-06-27 18:36:35,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 470 transitions, 6955 flow, removed 157 selfloop flow, removed 5 redundant places. [2024-06-27 18:36:35,588 INFO L231 Difference]: Finished difference. Result has 390 places, 425 transitions, 5763 flow [2024-06-27 18:36:35,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5543, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5763, PETRI_PLACES=390, PETRI_TRANSITIONS=425} [2024-06-27 18:36:35,589 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 349 predicate places. [2024-06-27 18:36:35,589 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 425 transitions, 5763 flow [2024-06-27 18:36:35,589 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 18:36:35,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:35,590 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 18:36:35,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:36:35,590 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 18:36:35,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1316093227, now seen corresponding path program 4 times [2024-06-27 18:36:35,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:35,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101919273] [2024-06-27 18:36:35,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:35,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:36,419 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 18:36:36,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:36,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101919273] [2024-06-27 18:36:36,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101919273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:36,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:36,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:36,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007071490] [2024-06-27 18:36:36,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:36,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:36,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:36,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:36,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 425 transitions, 5763 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 18:36:36,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:36,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:36,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:37,723 INFO L124 PetriNetUnfolderBase]: 2570/4320 cut-off events. [2024-06-27 18:36:37,724 INFO L125 PetriNetUnfolderBase]: For 146983/146983 co-relation queries the response was YES. [2024-06-27 18:36:37,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26767 conditions, 4320 events. 2570/4320 cut-off events. For 146983/146983 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26987 event pairs, 624 based on Foata normal form. 2/4282 useless extension candidates. Maximal degree in co-relation 26586. Up to 3886 conditions per place. [2024-06-27 18:36:37,789 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 405 selfloop transitions, 60 changer transitions 0/471 dead transitions. [2024-06-27 18:36:37,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 471 transitions, 6961 flow [2024-06-27 18:36:37,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:37,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:36:37,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398034398034398 [2024-06-27 18:36:37,791 INFO L175 Difference]: Start difference. First operand has 390 places, 425 transitions, 5763 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:36:37,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 471 transitions, 6961 flow [2024-06-27 18:36:38,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 471 transitions, 6774 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:36:38,853 INFO L231 Difference]: Finished difference. Result has 393 places, 427 transitions, 5794 flow [2024-06-27 18:36:38,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5578, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5794, PETRI_PLACES=393, PETRI_TRANSITIONS=427} [2024-06-27 18:36:38,853 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 352 predicate places. [2024-06-27 18:36:38,853 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 427 transitions, 5794 flow [2024-06-27 18:36:38,854 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 18:36:38,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:38,854 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 18:36:38,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:36:38,854 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 18:36:38,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:38,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1316086717, now seen corresponding path program 5 times [2024-06-27 18:36:38,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:38,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195715409] [2024-06-27 18:36:38,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:38,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:39,665 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 18:36:39,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:39,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195715409] [2024-06-27 18:36:39,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195715409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:39,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:39,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:39,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394528648] [2024-06-27 18:36:39,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:39,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:39,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:39,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:39,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:39,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:39,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 427 transitions, 5794 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 18:36:39,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:39,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:39,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:40,981 INFO L124 PetriNetUnfolderBase]: 2567/4315 cut-off events. [2024-06-27 18:36:40,981 INFO L125 PetriNetUnfolderBase]: For 134936/134936 co-relation queries the response was YES. [2024-06-27 18:36:41,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26452 conditions, 4315 events. 2567/4315 cut-off events. For 134936/134936 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26955 event pairs, 615 based on Foata normal form. 2/4277 useless extension candidates. Maximal degree in co-relation 26270. Up to 3831 conditions per place. [2024-06-27 18:36:41,050 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 402 selfloop transitions, 63 changer transitions 0/471 dead transitions. [2024-06-27 18:36:41,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 471 transitions, 6902 flow [2024-06-27 18:36:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:41,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:41,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:36:41,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:36:41,051 INFO L175 Difference]: Start difference. First operand has 393 places, 427 transitions, 5794 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:36:41,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 471 transitions, 6902 flow [2024-06-27 18:36:42,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 471 transitions, 6628 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:42,229 INFO L231 Difference]: Finished difference. Result has 395 places, 427 transitions, 5652 flow [2024-06-27 18:36:42,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5520, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5652, PETRI_PLACES=395, PETRI_TRANSITIONS=427} [2024-06-27 18:36:42,230 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 18:36:42,230 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 427 transitions, 5652 flow [2024-06-27 18:36:42,230 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 18:36:42,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:42,230 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 18:36:42,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:36:42,231 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 18:36:42,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:42,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1226730125, now seen corresponding path program 6 times [2024-06-27 18:36:42,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:42,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901499320] [2024-06-27 18:36:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:42,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:43,211 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 18:36:43,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:43,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901499320] [2024-06-27 18:36:43,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901499320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:43,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:43,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:43,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002726405] [2024-06-27 18:36:43,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:43,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:43,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:43,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:43,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:43,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:43,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 427 transitions, 5652 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 18:36:43,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:43,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:43,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:44,630 INFO L124 PetriNetUnfolderBase]: 2582/4340 cut-off events. [2024-06-27 18:36:44,631 INFO L125 PetriNetUnfolderBase]: For 136153/136153 co-relation queries the response was YES. [2024-06-27 18:36:44,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26516 conditions, 4340 events. 2582/4340 cut-off events. For 136153/136153 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 27178 event pairs, 572 based on Foata normal form. 2/4301 useless extension candidates. Maximal degree in co-relation 26333. Up to 3653 conditions per place. [2024-06-27 18:36:44,687 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 370 selfloop transitions, 95 changer transitions 0/471 dead transitions. [2024-06-27 18:36:44,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 471 transitions, 6870 flow [2024-06-27 18:36:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:44,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:36:44,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44963144963144963 [2024-06-27 18:36:44,689 INFO L175 Difference]: Start difference. First operand has 395 places, 427 transitions, 5652 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:36:44,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 471 transitions, 6870 flow [2024-06-27 18:36:45,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 471 transitions, 6723 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-27 18:36:45,931 INFO L231 Difference]: Finished difference. Result has 396 places, 429 transitions, 5814 flow [2024-06-27 18:36:45,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5505, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5814, PETRI_PLACES=396, PETRI_TRANSITIONS=429} [2024-06-27 18:36:45,932 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 355 predicate places. [2024-06-27 18:36:45,932 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 429 transitions, 5814 flow [2024-06-27 18:36:45,932 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 18:36:45,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:45,932 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 18:36:45,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:36:45,933 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 18:36:45,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:45,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1227037583, now seen corresponding path program 1 times [2024-06-27 18:36:45,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:45,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106401237] [2024-06-27 18:36:45,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:45,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:45,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:46,555 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 18:36:46,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:46,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106401237] [2024-06-27 18:36:46,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106401237] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:46,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:36:46,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942732323] [2024-06-27 18:36:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:46,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:36:46,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:46,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:36:46,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:36:46,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:46,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 429 transitions, 5814 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 18:36:46,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:46,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:46,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:47,873 INFO L124 PetriNetUnfolderBase]: 2728/4598 cut-off events. [2024-06-27 18:36:47,873 INFO L125 PetriNetUnfolderBase]: For 276143/276143 co-relation queries the response was YES. [2024-06-27 18:36:47,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30048 conditions, 4598 events. 2728/4598 cut-off events. For 276143/276143 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 29201 event pairs, 583 based on Foata normal form. 8/4565 useless extension candidates. Maximal degree in co-relation 29864. Up to 3355 conditions per place. [2024-06-27 18:36:47,944 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 381 selfloop transitions, 95 changer transitions 0/482 dead transitions. [2024-06-27 18:36:47,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 482 transitions, 7446 flow [2024-06-27 18:36:47,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:47,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:36:47,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:36:47,946 INFO L175 Difference]: Start difference. First operand has 396 places, 429 transitions, 5814 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:36:47,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 482 transitions, 7446 flow [2024-06-27 18:36:49,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 482 transitions, 7127 flow, removed 55 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:49,993 INFO L231 Difference]: Finished difference. Result has 398 places, 431 transitions, 5867 flow [2024-06-27 18:36:49,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5495, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5867, PETRI_PLACES=398, PETRI_TRANSITIONS=431} [2024-06-27 18:36:49,993 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 357 predicate places. [2024-06-27 18:36:49,994 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 431 transitions, 5867 flow [2024-06-27 18:36:49,994 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 18:36:49,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:49,994 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 18:36:49,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:36:49,994 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 18:36:49,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1974043203, now seen corresponding path program 7 times [2024-06-27 18:36:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:49,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279194335] [2024-06-27 18:36:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:49,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:50,884 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 18:36:50,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279194335] [2024-06-27 18:36:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279194335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817323987] [2024-06-27 18:36:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:50,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:50,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:50,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:51,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:51,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 431 transitions, 5867 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 18:36:51,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:51,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:51,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:52,335 INFO L124 PetriNetUnfolderBase]: 2743/4623 cut-off events. [2024-06-27 18:36:52,335 INFO L125 PetriNetUnfolderBase]: For 243855/243855 co-relation queries the response was YES. [2024-06-27 18:36:52,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30123 conditions, 4623 events. 2743/4623 cut-off events. For 243855/243855 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 29431 event pairs, 676 based on Foata normal form. 2/4584 useless extension candidates. Maximal degree in co-relation 29938. Up to 3839 conditions per place. [2024-06-27 18:36:52,405 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 385 selfloop transitions, 84 changer transitions 0/475 dead transitions. [2024-06-27 18:36:52,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 475 transitions, 7099 flow [2024-06-27 18:36:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:36:52,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:36:52,407 INFO L175 Difference]: Start difference. First operand has 398 places, 431 transitions, 5867 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:36:52,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 475 transitions, 7099 flow [2024-06-27 18:36:54,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 475 transitions, 6880 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:36:54,205 INFO L231 Difference]: Finished difference. Result has 402 places, 433 transitions, 5941 flow [2024-06-27 18:36:54,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5660, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5941, PETRI_PLACES=402, PETRI_TRANSITIONS=433} [2024-06-27 18:36:54,206 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 361 predicate places. [2024-06-27 18:36:54,206 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 433 transitions, 5941 flow [2024-06-27 18:36:54,206 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 18:36:54,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:54,207 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 18:36:54,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:36:54,207 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 18:36:54,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:54,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1218455915, now seen corresponding path program 8 times [2024-06-27 18:36:54,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:54,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164386527] [2024-06-27 18:36:54,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:54,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:55,010 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 18:36:55,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164386527] [2024-06-27 18:36:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164386527] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:55,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171247572] [2024-06-27 18:36:55,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:55,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:55,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:55,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:55,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:55,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:55,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 433 transitions, 5941 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 18:36:55,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:55,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:55,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:36:56,376 INFO L124 PetriNetUnfolderBase]: 2758/4648 cut-off events. [2024-06-27 18:36:56,376 INFO L125 PetriNetUnfolderBase]: For 239184/239184 co-relation queries the response was YES. [2024-06-27 18:36:56,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30286 conditions, 4648 events. 2758/4648 cut-off events. For 239184/239184 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 29670 event pairs, 642 based on Foata normal form. 2/4609 useless extension candidates. Maximal degree in co-relation 30099. Up to 3864 conditions per place. [2024-06-27 18:36:56,445 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 380 selfloop transitions, 91 changer transitions 0/477 dead transitions. [2024-06-27 18:36:56,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 477 transitions, 7169 flow [2024-06-27 18:36:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:36:56,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:36:56,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:36:56,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.457002457002457 [2024-06-27 18:36:56,446 INFO L175 Difference]: Start difference. First operand has 402 places, 433 transitions, 5941 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:36:56,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 477 transitions, 7169 flow [2024-06-27 18:36:58,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 477 transitions, 6906 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-27 18:36:58,401 INFO L231 Difference]: Finished difference. Result has 404 places, 435 transitions, 5977 flow [2024-06-27 18:36:58,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5678, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5977, PETRI_PLACES=404, PETRI_TRANSITIONS=435} [2024-06-27 18:36:58,402 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 18:36:58,402 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 435 transitions, 5977 flow [2024-06-27 18:36:58,402 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 18:36:58,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:36:58,402 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 18:36:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:36:58,402 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 18:36:58,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:36:58,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1218449405, now seen corresponding path program 9 times [2024-06-27 18:36:58,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:36:58,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612577155] [2024-06-27 18:36:58,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:36:58,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:36:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:36:59,192 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 18:36:59,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:36:59,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612577155] [2024-06-27 18:36:59,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612577155] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:36:59,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:36:59,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:36:59,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237157853] [2024-06-27 18:36:59,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:36:59,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:36:59,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:36:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:36:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:36:59,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:36:59,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 435 transitions, 5977 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 18:36:59,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:36:59,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:36:59,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:00,680 INFO L124 PetriNetUnfolderBase]: 2815/4751 cut-off events. [2024-06-27 18:37:00,681 INFO L125 PetriNetUnfolderBase]: For 288417/288417 co-relation queries the response was YES. [2024-06-27 18:37:00,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31699 conditions, 4751 events. 2815/4751 cut-off events. For 288417/288417 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 30473 event pairs, 652 based on Foata normal form. 2/4712 useless extension candidates. Maximal degree in co-relation 31511. Up to 3765 conditions per place. [2024-06-27 18:37:00,745 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 382 selfloop transitions, 97 changer transitions 0/485 dead transitions. [2024-06-27 18:37:00,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 485 transitions, 7591 flow [2024-06-27 18:37:00,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:00,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:37:00,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-06-27 18:37:00,747 INFO L175 Difference]: Start difference. First operand has 404 places, 435 transitions, 5977 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:37:00,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 485 transitions, 7591 flow [2024-06-27 18:37:02,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 485 transitions, 7310 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:02,669 INFO L231 Difference]: Finished difference. Result has 407 places, 438 transitions, 6115 flow [2024-06-27 18:37:02,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5696, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6115, PETRI_PLACES=407, PETRI_TRANSITIONS=438} [2024-06-27 18:37:02,669 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 366 predicate places. [2024-06-27 18:37:02,670 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 438 transitions, 6115 flow [2024-06-27 18:37:02,670 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 18:37:02,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:02,670 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 18:37:02,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:37:02,670 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 18:37:02,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:02,671 INFO L85 PathProgramCache]: Analyzing trace with hash -892839939, now seen corresponding path program 10 times [2024-06-27 18:37:02,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:02,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559301730] [2024-06-27 18:37:02,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:02,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:03,438 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 18:37:03,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:03,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559301730] [2024-06-27 18:37:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559301730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:03,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:03,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:03,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673223680] [2024-06-27 18:37:03,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:03,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:03,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 438 transitions, 6115 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 18:37:03,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:03,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:03,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:04,984 INFO L124 PetriNetUnfolderBase]: 2830/4776 cut-off events. [2024-06-27 18:37:04,984 INFO L125 PetriNetUnfolderBase]: For 296181/296181 co-relation queries the response was YES. [2024-06-27 18:37:05,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31984 conditions, 4776 events. 2830/4776 cut-off events. For 296181/296181 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 30665 event pairs, 705 based on Foata normal form. 2/4737 useless extension candidates. Maximal degree in co-relation 31794. Up to 3951 conditions per place. [2024-06-27 18:37:05,055 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 389 selfloop transitions, 87 changer transitions 0/482 dead transitions. [2024-06-27 18:37:05,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 482 transitions, 7367 flow [2024-06-27 18:37:05,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:05,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 18:37:05,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4668304668304668 [2024-06-27 18:37:05,057 INFO L175 Difference]: Start difference. First operand has 407 places, 438 transitions, 6115 flow. Second operand 11 states and 190 transitions. [2024-06-27 18:37:05,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 482 transitions, 7367 flow [2024-06-27 18:37:07,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 482 transitions, 7070 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-06-27 18:37:07,390 INFO L231 Difference]: Finished difference. Result has 410 places, 440 transitions, 6125 flow [2024-06-27 18:37:07,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5818, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6125, PETRI_PLACES=410, PETRI_TRANSITIONS=440} [2024-06-27 18:37:07,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 369 predicate places. [2024-06-27 18:37:07,390 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 440 transitions, 6125 flow [2024-06-27 18:37:07,391 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 18:37:07,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:07,391 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 18:37:07,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:37:07,391 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 18:37:07,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:07,392 INFO L85 PathProgramCache]: Analyzing trace with hash -893012919, now seen corresponding path program 11 times [2024-06-27 18:37:07,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:07,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119025156] [2024-06-27 18:37:07,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:07,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:08,141 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 18:37:08,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:08,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119025156] [2024-06-27 18:37:08,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119025156] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:08,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:08,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:08,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472033677] [2024-06-27 18:37:08,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:08,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:08,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:08,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:08,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 440 transitions, 6125 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 18:37:08,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:08,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:08,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:09,705 INFO L124 PetriNetUnfolderBase]: 2845/4801 cut-off events. [2024-06-27 18:37:09,706 INFO L125 PetriNetUnfolderBase]: For 301226/301226 co-relation queries the response was YES. [2024-06-27 18:37:09,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32132 conditions, 4801 events. 2845/4801 cut-off events. For 301226/301226 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 30888 event pairs, 702 based on Foata normal form. 2/4762 useless extension candidates. Maximal degree in co-relation 31941. Up to 3912 conditions per place. [2024-06-27 18:37:09,780 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 388 selfloop transitions, 90 changer transitions 0/484 dead transitions. [2024-06-27 18:37:09,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 484 transitions, 7383 flow [2024-06-27 18:37:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:09,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:37:09,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:37:09,782 INFO L175 Difference]: Start difference. First operand has 410 places, 440 transitions, 6125 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:37:09,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 484 transitions, 7383 flow [2024-06-27 18:37:12,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 484 transitions, 7092 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:12,118 INFO L231 Difference]: Finished difference. Result has 412 places, 442 transitions, 6151 flow [2024-06-27 18:37:12,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5834, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6151, PETRI_PLACES=412, PETRI_TRANSITIONS=442} [2024-06-27 18:37:12,119 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 371 predicate places. [2024-06-27 18:37:12,119 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 442 transitions, 6151 flow [2024-06-27 18:37:12,119 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 18:37:12,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:12,119 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 18:37:12,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:37:12,119 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 18:37:12,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:12,120 INFO L85 PathProgramCache]: Analyzing trace with hash 990554765, now seen corresponding path program 12 times [2024-06-27 18:37:12,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:12,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163964491] [2024-06-27 18:37:12,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:12,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:12,906 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 18:37:12,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:12,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163964491] [2024-06-27 18:37:12,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163964491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:12,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:12,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135833428] [2024-06-27 18:37:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:12,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:12,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:12,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:12,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:13,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:13,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 442 transitions, 6151 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 18:37:13,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:13,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:13,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:14,358 INFO L124 PetriNetUnfolderBase]: 2842/4796 cut-off events. [2024-06-27 18:37:14,358 INFO L125 PetriNetUnfolderBase]: For 287546/287546 co-relation queries the response was YES. [2024-06-27 18:37:14,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31723 conditions, 4796 events. 2842/4796 cut-off events. For 287546/287546 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 30911 event pairs, 689 based on Foata normal form. 2/4757 useless extension candidates. Maximal degree in co-relation 31531. Up to 4012 conditions per place. [2024-06-27 18:37:14,431 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 392 selfloop transitions, 88 changer transitions 0/486 dead transitions. [2024-06-27 18:37:14,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 486 transitions, 7409 flow [2024-06-27 18:37:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:14,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:14,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:37:14,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4619164619164619 [2024-06-27 18:37:14,432 INFO L175 Difference]: Start difference. First operand has 412 places, 442 transitions, 6151 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:37:14,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 486 transitions, 7409 flow [2024-06-27 18:37:16,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 486 transitions, 7108 flow, removed 62 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:16,814 INFO L231 Difference]: Finished difference. Result has 414 places, 444 transitions, 6155 flow [2024-06-27 18:37:16,815 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5850, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6155, PETRI_PLACES=414, PETRI_TRANSITIONS=444} [2024-06-27 18:37:16,815 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-27 18:37:16,815 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 444 transitions, 6155 flow [2024-06-27 18:37:16,815 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 18:37:16,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:16,815 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 18:37:16,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:37:16,816 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 18:37:16,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash -320894981, now seen corresponding path program 2 times [2024-06-27 18:37:16,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:16,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307575756] [2024-06-27 18:37:16,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:16,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:17,457 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 18:37:17,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:17,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307575756] [2024-06-27 18:37:17,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307575756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:17,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:17,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:17,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000034448] [2024-06-27 18:37:17,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:17,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:17,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:17,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:17,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:17,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:17,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 444 transitions, 6155 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 18:37:17,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:17,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:17,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:18,844 INFO L124 PetriNetUnfolderBase]: 2829/4773 cut-off events. [2024-06-27 18:37:18,844 INFO L125 PetriNetUnfolderBase]: For 273469/273469 co-relation queries the response was YES. [2024-06-27 18:37:18,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30248 conditions, 4773 events. 2829/4773 cut-off events. For 273469/273469 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 30650 event pairs, 660 based on Foata normal form. 10/4742 useless extension candidates. Maximal degree in co-relation 30055. Up to 3869 conditions per place. [2024-06-27 18:37:18,911 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 388 selfloop transitions, 96 changer transitions 0/490 dead transitions. [2024-06-27 18:37:18,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 490 transitions, 7341 flow [2024-06-27 18:37:18,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:37:18,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:37:18,912 INFO L175 Difference]: Start difference. First operand has 414 places, 444 transitions, 6155 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:37:18,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 490 transitions, 7341 flow [2024-06-27 18:37:21,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 490 transitions, 7002 flow, removed 83 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:21,005 INFO L231 Difference]: Finished difference. Result has 416 places, 444 transitions, 6016 flow [2024-06-27 18:37:21,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5816, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6016, PETRI_PLACES=416, PETRI_TRANSITIONS=444} [2024-06-27 18:37:21,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 375 predicate places. [2024-06-27 18:37:21,006 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 444 transitions, 6016 flow [2024-06-27 18:37:21,006 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 18:37:21,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:21,006 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 18:37:21,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:37:21,006 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 18:37:21,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:21,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1965996657, now seen corresponding path program 13 times [2024-06-27 18:37:21,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:21,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463472525] [2024-06-27 18:37:21,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:21,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:21,789 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 18:37:21,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:21,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463472525] [2024-06-27 18:37:21,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463472525] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:21,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:21,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:21,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109728601] [2024-06-27 18:37:21,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:21,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:21,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:21,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:21,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:21,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 444 transitions, 6016 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 18:37:21,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:21,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:21,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:23,230 INFO L124 PetriNetUnfolderBase]: 2844/4798 cut-off events. [2024-06-27 18:37:23,231 INFO L125 PetriNetUnfolderBase]: For 211429/211429 co-relation queries the response was YES. [2024-06-27 18:37:23,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30174 conditions, 4798 events. 2844/4798 cut-off events. For 211429/211429 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 30909 event pairs, 677 based on Foata normal form. 2/4759 useless extension candidates. Maximal degree in co-relation 29980. Up to 3973 conditions per place. [2024-06-27 18:37:23,306 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 391 selfloop transitions, 91 changer transitions 0/488 dead transitions. [2024-06-27 18:37:23,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 488 transitions, 7290 flow [2024-06-27 18:37:23,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:23,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:37:23,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:37:23,308 INFO L175 Difference]: Start difference. First operand has 416 places, 444 transitions, 6016 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:37:23,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 488 transitions, 7290 flow [2024-06-27 18:37:25,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 488 transitions, 7088 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:37:25,462 INFO L231 Difference]: Finished difference. Result has 417 places, 446 transitions, 6139 flow [2024-06-27 18:37:25,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5814, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6139, PETRI_PLACES=417, PETRI_TRANSITIONS=446} [2024-06-27 18:37:25,462 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 376 predicate places. [2024-06-27 18:37:25,462 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 446 transitions, 6139 flow [2024-06-27 18:37:25,462 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 18:37:25,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:25,464 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 18:37:25,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:37:25,465 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 18:37:25,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:25,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1965823677, now seen corresponding path program 14 times [2024-06-27 18:37:25,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:25,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288924542] [2024-06-27 18:37:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:25,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:26,192 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 18:37:26,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:26,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288924542] [2024-06-27 18:37:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288924542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:26,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:26,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:26,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466803649] [2024-06-27 18:37:26,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:26,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:26,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:26,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:26,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:26,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:26,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 446 transitions, 6139 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 18:37:26,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:26,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:26,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:27,679 INFO L124 PetriNetUnfolderBase]: 2859/4823 cut-off events. [2024-06-27 18:37:27,680 INFO L125 PetriNetUnfolderBase]: For 218954/218954 co-relation queries the response was YES. [2024-06-27 18:37:27,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30521 conditions, 4823 events. 2859/4823 cut-off events. For 218954/218954 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 31064 event pairs, 666 based on Foata normal form. 2/4784 useless extension candidates. Maximal degree in co-relation 30326. Up to 3737 conditions per place. [2024-06-27 18:37:27,752 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 386 selfloop transitions, 102 changer transitions 0/494 dead transitions. [2024-06-27 18:37:27,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 494 transitions, 7467 flow [2024-06-27 18:37:27,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:37:27,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:37:27,757 INFO L175 Difference]: Start difference. First operand has 417 places, 446 transitions, 6139 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:37:27,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 494 transitions, 7467 flow [2024-06-27 18:37:29,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 494 transitions, 7158 flow, removed 65 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:29,687 INFO L231 Difference]: Finished difference. Result has 419 places, 448 transitions, 6181 flow [2024-06-27 18:37:29,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5830, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6181, PETRI_PLACES=419, PETRI_TRANSITIONS=448} [2024-06-27 18:37:29,688 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 18:37:29,688 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 448 transitions, 6181 flow [2024-06-27 18:37:29,689 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 18:37:29,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:29,689 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 18:37:29,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:37:29,691 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 18:37:29,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:29,691 INFO L85 PathProgramCache]: Analyzing trace with hash -897481569, now seen corresponding path program 15 times [2024-06-27 18:37:29,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:29,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662974675] [2024-06-27 18:37:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:29,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:29,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:30,476 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 18:37:30,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:30,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662974675] [2024-06-27 18:37:30,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662974675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:30,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:30,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:30,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361303317] [2024-06-27 18:37:30,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:30,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:30,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:30,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:30,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:30,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:30,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 448 transitions, 6181 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 18:37:30,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:30,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:30,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:31,945 INFO L124 PetriNetUnfolderBase]: 2874/4848 cut-off events. [2024-06-27 18:37:31,945 INFO L125 PetriNetUnfolderBase]: For 224588/224588 co-relation queries the response was YES. [2024-06-27 18:37:32,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30748 conditions, 4848 events. 2874/4848 cut-off events. For 224588/224588 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 31276 event pairs, 691 based on Foata normal form. 2/4809 useless extension candidates. Maximal degree in co-relation 30552. Up to 3552 conditions per place. [2024-06-27 18:37:32,020 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 381 selfloop transitions, 109 changer transitions 0/496 dead transitions. [2024-06-27 18:37:32,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 496 transitions, 7515 flow [2024-06-27 18:37:32,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:32,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 193 transitions. [2024-06-27 18:37:32,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4742014742014742 [2024-06-27 18:37:32,021 INFO L175 Difference]: Start difference. First operand has 419 places, 448 transitions, 6181 flow. Second operand 11 states and 193 transitions. [2024-06-27 18:37:32,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 496 transitions, 7515 flow [2024-06-27 18:37:34,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 496 transitions, 7180 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:34,050 INFO L231 Difference]: Finished difference. Result has 421 places, 450 transitions, 6215 flow [2024-06-27 18:37:34,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5846, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6215, PETRI_PLACES=421, PETRI_TRANSITIONS=450} [2024-06-27 18:37:34,051 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 380 predicate places. [2024-06-27 18:37:34,051 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 450 transitions, 6215 flow [2024-06-27 18:37:34,051 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 18:37:34,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:34,051 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 18:37:34,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:37:34,052 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 18:37:34,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:34,052 INFO L85 PathProgramCache]: Analyzing trace with hash -265012237, now seen corresponding path program 16 times [2024-06-27 18:37:34,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:34,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406077107] [2024-06-27 18:37:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:34,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:34,831 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 18:37:34,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:34,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406077107] [2024-06-27 18:37:34,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406077107] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:34,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:34,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:34,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118903800] [2024-06-27 18:37:34,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:34,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:34,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:34,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:34,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:34,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:34,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 450 transitions, 6215 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 18:37:34,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:34,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:34,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:36,217 INFO L124 PetriNetUnfolderBase]: 2954/4989 cut-off events. [2024-06-27 18:37:36,217 INFO L125 PetriNetUnfolderBase]: For 317440/317446 co-relation queries the response was YES. [2024-06-27 18:37:36,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31896 conditions, 4989 events. 2954/4989 cut-off events. For 317440/317446 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 32496 event pairs, 411 based on Foata normal form. 12/4956 useless extension candidates. Maximal degree in co-relation 31699. Up to 3236 conditions per place. [2024-06-27 18:37:36,295 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 320 selfloop transitions, 172 changer transitions 0/498 dead transitions. [2024-06-27 18:37:36,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 498 transitions, 7573 flow [2024-06-27 18:37:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:36,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:37:36,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 18:37:36,297 INFO L175 Difference]: Start difference. First operand has 421 places, 450 transitions, 6215 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:37:36,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 498 transitions, 7573 flow [2024-06-27 18:37:38,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 498 transitions, 7220 flow, removed 69 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:38,361 INFO L231 Difference]: Finished difference. Result has 423 places, 452 transitions, 6363 flow [2024-06-27 18:37:38,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5862, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6363, PETRI_PLACES=423, PETRI_TRANSITIONS=452} [2024-06-27 18:37:38,362 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 382 predicate places. [2024-06-27 18:37:38,362 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 452 transitions, 6363 flow [2024-06-27 18:37:38,362 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 18:37:38,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:38,362 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 18:37:38,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:37:38,363 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 18:37:38,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:38,363 INFO L85 PathProgramCache]: Analyzing trace with hash -137723389, now seen corresponding path program 3 times [2024-06-27 18:37:38,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:38,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820496695] [2024-06-27 18:37:38,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:38,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:39,005 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 18:37:39,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:39,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820496695] [2024-06-27 18:37:39,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820496695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:39,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:39,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:39,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830663844] [2024-06-27 18:37:39,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:39,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:39,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:39,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:39,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:39,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:39,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 452 transitions, 6363 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 18:37:39,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:39,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:39,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:40,454 INFO L124 PetriNetUnfolderBase]: 3064/5187 cut-off events. [2024-06-27 18:37:40,455 INFO L125 PetriNetUnfolderBase]: For 371887/371893 co-relation queries the response was YES. [2024-06-27 18:37:40,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34696 conditions, 5187 events. 3064/5187 cut-off events. For 371887/371893 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 34088 event pairs, 436 based on Foata normal form. 8/5150 useless extension candidates. Maximal degree in co-relation 34498. Up to 3084 conditions per place. [2024-06-27 18:37:40,539 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 328 selfloop transitions, 171 changer transitions 0/505 dead transitions. [2024-06-27 18:37:40,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 505 transitions, 8127 flow [2024-06-27 18:37:40,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:40,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 201 transitions. [2024-06-27 18:37:40,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49385749385749383 [2024-06-27 18:37:40,541 INFO L175 Difference]: Start difference. First operand has 423 places, 452 transitions, 6363 flow. Second operand 11 states and 201 transitions. [2024-06-27 18:37:40,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 505 transitions, 8127 flow [2024-06-27 18:37:42,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 505 transitions, 7668 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:42,795 INFO L231 Difference]: Finished difference. Result has 425 places, 454 transitions, 6460 flow [2024-06-27 18:37:42,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=5904, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6460, PETRI_PLACES=425, PETRI_TRANSITIONS=454} [2024-06-27 18:37:42,795 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 384 predicate places. [2024-06-27 18:37:42,795 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 454 transitions, 6460 flow [2024-06-27 18:37:42,795 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 18:37:42,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:42,796 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 18:37:42,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:37:42,796 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 18:37:42,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:42,796 INFO L85 PathProgramCache]: Analyzing trace with hash -520613187, now seen corresponding path program 17 times [2024-06-27 18:37:42,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:42,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119884384] [2024-06-27 18:37:42,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:42,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:43,605 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 18:37:43,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:43,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119884384] [2024-06-27 18:37:43,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119884384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:43,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:43,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:43,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542231274] [2024-06-27 18:37:43,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:43,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:43,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:43,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:43,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:43,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:43,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 454 transitions, 6460 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 18:37:43,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:43,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:43,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:45,049 INFO L124 PetriNetUnfolderBase]: 3079/5212 cut-off events. [2024-06-27 18:37:45,050 INFO L125 PetriNetUnfolderBase]: For 316284/316290 co-relation queries the response was YES. [2024-06-27 18:37:45,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34476 conditions, 5212 events. 3079/5212 cut-off events. For 316284/316290 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 34335 event pairs, 453 based on Foata normal form. 2/5169 useless extension candidates. Maximal degree in co-relation 34277. Up to 3579 conditions per place. [2024-06-27 18:37:45,130 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 320 selfloop transitions, 172 changer transitions 0/498 dead transitions. [2024-06-27 18:37:45,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 498 transitions, 7784 flow [2024-06-27 18:37:45,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:45,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:37:45,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 18:37:45,132 INFO L175 Difference]: Start difference. First operand has 425 places, 454 transitions, 6460 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:37:45,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 498 transitions, 7784 flow [2024-06-27 18:37:47,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 498 transitions, 7464 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:37:47,746 INFO L231 Difference]: Finished difference. Result has 429 places, 456 transitions, 6645 flow [2024-06-27 18:37:47,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6154, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6645, PETRI_PLACES=429, PETRI_TRANSITIONS=456} [2024-06-27 18:37:47,746 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 388 predicate places. [2024-06-27 18:37:47,746 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 456 transitions, 6645 flow [2024-06-27 18:37:47,746 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 18:37:47,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:47,747 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 18:37:47,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:37:47,747 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 18:37:47,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:47,747 INFO L85 PathProgramCache]: Analyzing trace with hash -374206207, now seen corresponding path program 18 times [2024-06-27 18:37:47,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:47,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593168083] [2024-06-27 18:37:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:47,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:48,498 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 18:37:48,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:48,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593168083] [2024-06-27 18:37:48,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593168083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:48,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:48,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:48,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834758599] [2024-06-27 18:37:48,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:48,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:48,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:48,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:48,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:48,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:48,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 456 transitions, 6645 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 18:37:48,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:48,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:48,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:50,111 INFO L124 PetriNetUnfolderBase]: 3076/5207 cut-off events. [2024-06-27 18:37:50,111 INFO L125 PetriNetUnfolderBase]: For 293867/293873 co-relation queries the response was YES. [2024-06-27 18:37:50,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34388 conditions, 5207 events. 3076/5207 cut-off events. For 293867/293873 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 34265 event pairs, 440 based on Foata normal form. 2/5164 useless extension candidates. Maximal degree in co-relation 34187. Up to 3574 conditions per place. [2024-06-27 18:37:50,191 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 308 selfloop transitions, 186 changer transitions 0/500 dead transitions. [2024-06-27 18:37:50,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 500 transitions, 7963 flow [2024-06-27 18:37:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:50,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 194 transitions. [2024-06-27 18:37:50,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665847665847666 [2024-06-27 18:37:50,193 INFO L175 Difference]: Start difference. First operand has 429 places, 456 transitions, 6645 flow. Second operand 11 states and 194 transitions. [2024-06-27 18:37:50,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 500 transitions, 7963 flow [2024-06-27 18:37:52,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 500 transitions, 7490 flow, removed 66 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:52,885 INFO L231 Difference]: Finished difference. Result has 431 places, 458 transitions, 6695 flow [2024-06-27 18:37:52,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6172, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6695, PETRI_PLACES=431, PETRI_TRANSITIONS=458} [2024-06-27 18:37:52,886 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 390 predicate places. [2024-06-27 18:37:52,886 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 458 transitions, 6695 flow [2024-06-27 18:37:52,886 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 18:37:52,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:52,887 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 18:37:52,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:37:52,887 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 18:37:52,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:52,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1023075713, now seen corresponding path program 19 times [2024-06-27 18:37:52,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:52,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185115389] [2024-06-27 18:37:52,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:52,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:53,605 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 18:37:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:53,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185115389] [2024-06-27 18:37:53,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185115389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:53,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:53,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:37:53,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142838526] [2024-06-27 18:37:53,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:53,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:37:53,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:53,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:37:53,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:37:53,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:53,685 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 458 transitions, 6695 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 18:37:53,685 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:53,685 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:53,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:37:55,278 INFO L124 PetriNetUnfolderBase]: 3091/5232 cut-off events. [2024-06-27 18:37:55,278 INFO L125 PetriNetUnfolderBase]: For 300638/300644 co-relation queries the response was YES. [2024-06-27 18:37:55,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34632 conditions, 5232 events. 3091/5232 cut-off events. For 300638/300644 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 34477 event pairs, 445 based on Foata normal form. 2/5189 useless extension candidates. Maximal degree in co-relation 34430. Up to 3558 conditions per place. [2024-06-27 18:37:55,354 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 307 selfloop transitions, 189 changer transitions 0/502 dead transitions. [2024-06-27 18:37:55,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 502 transitions, 8029 flow [2024-06-27 18:37:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:37:55,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:37:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:37:55,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:37:55,355 INFO L175 Difference]: Start difference. First operand has 431 places, 458 transitions, 6695 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:37:55,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 502 transitions, 8029 flow [2024-06-27 18:37:58,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 502 transitions, 7524 flow, removed 68 selfloop flow, removed 9 redundant places. [2024-06-27 18:37:58,162 INFO L231 Difference]: Finished difference. Result has 433 places, 460 transitions, 6733 flow [2024-06-27 18:37:58,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6190, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6733, PETRI_PLACES=433, PETRI_TRANSITIONS=460} [2024-06-27 18:37:58,163 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 392 predicate places. [2024-06-27 18:37:58,163 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 460 transitions, 6733 flow [2024-06-27 18:37:58,163 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 18:37:58,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:37:58,163 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 18:37:58,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:37:58,164 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 18:37:58,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:37:58,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1250976863, now seen corresponding path program 20 times [2024-06-27 18:37:58,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:37:58,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743541488] [2024-06-27 18:37:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:37:58,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:37:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:37:58,969 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 18:37:58,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:37:58,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743541488] [2024-06-27 18:37:58,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743541488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:37:58,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:37:58,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:37:58,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116551142] [2024-06-27 18:37:58,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:37:58,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:37:58,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:37:58,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:37:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:37:59,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:37:59,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 460 transitions, 6733 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 18:37:59,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:37:59,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:37:59,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:00,512 INFO L124 PetriNetUnfolderBase]: 3106/5257 cut-off events. [2024-06-27 18:38:00,512 INFO L125 PetriNetUnfolderBase]: For 307078/307084 co-relation queries the response was YES. [2024-06-27 18:38:00,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34824 conditions, 5257 events. 3106/5257 cut-off events. For 307078/307084 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 34676 event pairs, 450 based on Foata normal form. 2/5214 useless extension candidates. Maximal degree in co-relation 34621. Up to 3445 conditions per place. [2024-06-27 18:38:00,594 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 325 selfloop transitions, 177 changer transitions 0/508 dead transitions. [2024-06-27 18:38:00,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 508 transitions, 8123 flow [2024-06-27 18:38:00,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:00,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:38:00,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914004914004914 [2024-06-27 18:38:00,596 INFO L175 Difference]: Start difference. First operand has 433 places, 460 transitions, 6733 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:38:00,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 508 transitions, 8123 flow [2024-06-27 18:38:03,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 508 transitions, 7594 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:03,362 INFO L231 Difference]: Finished difference. Result has 435 places, 462 transitions, 6727 flow [2024-06-27 18:38:03,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6204, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6727, PETRI_PLACES=435, PETRI_TRANSITIONS=462} [2024-06-27 18:38:03,362 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 394 predicate places. [2024-06-27 18:38:03,363 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 462 transitions, 6727 flow [2024-06-27 18:38:03,363 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 18:38:03,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:03,363 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 18:38:03,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:38:03,363 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 18:38:03,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:03,364 INFO L85 PathProgramCache]: Analyzing trace with hash -748693827, now seen corresponding path program 21 times [2024-06-27 18:38:03,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:03,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19307797] [2024-06-27 18:38:03,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:03,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:04,064 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 18:38:04,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:04,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19307797] [2024-06-27 18:38:04,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19307797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:04,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:04,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:04,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899621077] [2024-06-27 18:38:04,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:04,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:04,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:04,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:04,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 462 transitions, 6727 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 18:38:04,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:04,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:04,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:05,676 INFO L124 PetriNetUnfolderBase]: 3217/5450 cut-off events. [2024-06-27 18:38:05,676 INFO L125 PetriNetUnfolderBase]: For 436508/436514 co-relation queries the response was YES. [2024-06-27 18:38:05,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38081 conditions, 5450 events. 3217/5450 cut-off events. For 436508/436514 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 36247 event pairs, 466 based on Foata normal form. 2/5407 useless extension candidates. Maximal degree in co-relation 37877. Up to 3298 conditions per place. [2024-06-27 18:38:05,763 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 305 selfloop transitions, 202 changer transitions 0/513 dead transitions. [2024-06-27 18:38:05,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 513 transitions, 8559 flow [2024-06-27 18:38:05,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:05,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:05,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:38:05,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 18:38:05,764 INFO L175 Difference]: Start difference. First operand has 435 places, 462 transitions, 6727 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:38:05,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 513 transitions, 8559 flow [2024-06-27 18:38:09,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 513 transitions, 8052 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:09,531 INFO L231 Difference]: Finished difference. Result has 437 places, 466 transitions, 6961 flow [2024-06-27 18:38:09,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6220, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6961, PETRI_PLACES=437, PETRI_TRANSITIONS=466} [2024-06-27 18:38:09,531 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 396 predicate places. [2024-06-27 18:38:09,531 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 466 transitions, 6961 flow [2024-06-27 18:38:09,531 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 18:38:09,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:09,532 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 18:38:09,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:38:09,532 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 18:38:09,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:09,532 INFO L85 PathProgramCache]: Analyzing trace with hash 599383757, now seen corresponding path program 22 times [2024-06-27 18:38:09,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:09,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057358449] [2024-06-27 18:38:09,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:09,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:10,524 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 18:38:10,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:10,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057358449] [2024-06-27 18:38:10,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057358449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:10,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:10,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:10,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376042526] [2024-06-27 18:38:10,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:10,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:10,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:10,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:10,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:10,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:10,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 466 transitions, 6961 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 18:38:10,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:10,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:10,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:12,214 INFO L124 PetriNetUnfolderBase]: 3232/5475 cut-off events. [2024-06-27 18:38:12,214 INFO L125 PetriNetUnfolderBase]: For 444115/444121 co-relation queries the response was YES. [2024-06-27 18:38:12,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38404 conditions, 5475 events. 3232/5475 cut-off events. For 444115/444121 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 36522 event pairs, 565 based on Foata normal form. 2/5432 useless extension candidates. Maximal degree in co-relation 38199. Up to 4228 conditions per place. [2024-06-27 18:38:12,301 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 349 selfloop transitions, 155 changer transitions 0/510 dead transitions. [2024-06-27 18:38:12,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 510 transitions, 8325 flow [2024-06-27 18:38:12,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:38:12,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:38:12,303 INFO L175 Difference]: Start difference. First operand has 437 places, 466 transitions, 6961 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:38:12,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 510 transitions, 8325 flow [2024-06-27 18:38:15,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 510 transitions, 7882 flow, removed 93 selfloop flow, removed 8 redundant places. [2024-06-27 18:38:15,726 INFO L231 Difference]: Finished difference. Result has 440 places, 468 transitions, 7005 flow [2024-06-27 18:38:15,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6520, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7005, PETRI_PLACES=440, PETRI_TRANSITIONS=468} [2024-06-27 18:38:15,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 18:38:15,727 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 468 transitions, 7005 flow [2024-06-27 18:38:15,727 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 18:38:15,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:15,727 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 18:38:15,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:38:15,727 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 18:38:15,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1497067247, now seen corresponding path program 23 times [2024-06-27 18:38:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:15,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345667634] [2024-06-27 18:38:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:15,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:16,542 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 18:38:16,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:16,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345667634] [2024-06-27 18:38:16,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345667634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:16,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:16,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:16,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434274389] [2024-06-27 18:38:16,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:16,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:16,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:16,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:16,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:16,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 468 transitions, 7005 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 18:38:16,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:16,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:16,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:18,180 INFO L124 PetriNetUnfolderBase]: 3312/5614 cut-off events. [2024-06-27 18:38:18,180 INFO L125 PetriNetUnfolderBase]: For 543724/543724 co-relation queries the response was YES. [2024-06-27 18:38:18,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39618 conditions, 5614 events. 3312/5614 cut-off events. For 543724/543724 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 37643 event pairs, 749 based on Foata normal form. 12/5585 useless extension candidates. Maximal degree in co-relation 39412. Up to 5198 conditions per place. [2024-06-27 18:38:18,273 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 462 selfloop transitions, 43 changer transitions 0/511 dead transitions. [2024-06-27 18:38:18,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 511 transitions, 8369 flow [2024-06-27 18:38:18,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:18,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:38:18,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44226044226044225 [2024-06-27 18:38:18,274 INFO L175 Difference]: Start difference. First operand has 440 places, 468 transitions, 7005 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:38:18,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 511 transitions, 8369 flow [2024-06-27 18:38:21,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 511 transitions, 7879 flow, removed 84 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:21,793 INFO L231 Difference]: Finished difference. Result has 442 places, 470 transitions, 6758 flow [2024-06-27 18:38:21,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6515, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6758, PETRI_PLACES=442, PETRI_TRANSITIONS=470} [2024-06-27 18:38:21,793 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 401 predicate places. [2024-06-27 18:38:21,793 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 470 transitions, 6758 flow [2024-06-27 18:38:21,793 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 18:38:21,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:21,794 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 18:38:21,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:38:21,794 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 18:38:21,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1408388163, now seen corresponding path program 24 times [2024-06-27 18:38:21,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:21,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42605404] [2024-06-27 18:38:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:21,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:21,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:22,564 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 18:38:22,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:22,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42605404] [2024-06-27 18:38:22,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42605404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:22,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:22,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:22,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586962162] [2024-06-27 18:38:22,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:22,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:22,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:22,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:22,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 470 transitions, 6758 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 18:38:22,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:22,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:22,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:24,328 INFO L124 PetriNetUnfolderBase]: 3327/5640 cut-off events. [2024-06-27 18:38:24,329 INFO L125 PetriNetUnfolderBase]: For 459660/459666 co-relation queries the response was YES. [2024-06-27 18:38:24,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39251 conditions, 5640 events. 3327/5640 cut-off events. For 459660/459666 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 37887 event pairs, 561 based on Foata normal form. 2/5597 useless extension candidates. Maximal degree in co-relation 39044. Up to 4007 conditions per place. [2024-06-27 18:38:24,424 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 343 selfloop transitions, 165 changer transitions 0/514 dead transitions. [2024-06-27 18:38:24,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 514 transitions, 8132 flow [2024-06-27 18:38:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:38:24,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 18:38:24,426 INFO L175 Difference]: Start difference. First operand has 442 places, 470 transitions, 6758 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:38:24,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 514 transitions, 8132 flow [2024-06-27 18:38:27,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 514 transitions, 7935 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:27,853 INFO L231 Difference]: Finished difference. Result has 444 places, 472 transitions, 7070 flow [2024-06-27 18:38:27,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6561, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7070, PETRI_PLACES=444, PETRI_TRANSITIONS=472} [2024-06-27 18:38:27,853 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 403 predicate places. [2024-06-27 18:38:27,853 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 472 transitions, 7070 flow [2024-06-27 18:38:27,854 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 18:38:27,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:27,860 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 18:38:27,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:38:27,860 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 18:38:27,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:27,860 INFO L85 PathProgramCache]: Analyzing trace with hash 363201887, now seen corresponding path program 25 times [2024-06-27 18:38:27,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:27,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317838845] [2024-06-27 18:38:27,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:27,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:28,570 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 18:38:28,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317838845] [2024-06-27 18:38:28,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317838845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:28,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:28,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203005098] [2024-06-27 18:38:28,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:28,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:28,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:28,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:28,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:28,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:28,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 472 transitions, 7070 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 18:38:28,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:28,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:28,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:30,230 INFO L124 PetriNetUnfolderBase]: 3342/5665 cut-off events. [2024-06-27 18:38:30,230 INFO L125 PetriNetUnfolderBase]: For 459950/459956 co-relation queries the response was YES. [2024-06-27 18:38:30,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39675 conditions, 5665 events. 3342/5665 cut-off events. For 459950/459956 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 38111 event pairs, 561 based on Foata normal form. 2/5622 useless extension candidates. Maximal degree in co-relation 39467. Up to 3991 conditions per place. [2024-06-27 18:38:30,319 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 342 selfloop transitions, 168 changer transitions 0/516 dead transitions. [2024-06-27 18:38:30,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 516 transitions, 8450 flow [2024-06-27 18:38:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:30,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:30,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:38:30,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914004914004914 [2024-06-27 18:38:30,320 INFO L175 Difference]: Start difference. First operand has 444 places, 472 transitions, 7070 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:38:30,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 516 transitions, 8450 flow [2024-06-27 18:38:34,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 516 transitions, 7957 flow, removed 83 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:34,062 INFO L231 Difference]: Finished difference. Result has 446 places, 474 transitions, 7096 flow [2024-06-27 18:38:34,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6577, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7096, PETRI_PLACES=446, PETRI_TRANSITIONS=474} [2024-06-27 18:38:34,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 405 predicate places. [2024-06-27 18:38:34,062 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 474 transitions, 7096 flow [2024-06-27 18:38:34,063 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 18:38:34,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:34,063 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 18:38:34,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:38:34,063 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 18:38:34,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:34,063 INFO L85 PathProgramCache]: Analyzing trace with hash 363028907, now seen corresponding path program 26 times [2024-06-27 18:38:34,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:34,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384926157] [2024-06-27 18:38:34,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:34,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:34,782 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 18:38:34,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:34,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384926157] [2024-06-27 18:38:34,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384926157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:34,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:34,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:34,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471533882] [2024-06-27 18:38:34,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:34,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:34,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:34,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:34,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:34,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:34,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 474 transitions, 7096 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 18:38:34,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:34,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:36,594 INFO L124 PetriNetUnfolderBase]: 3453/5858 cut-off events. [2024-06-27 18:38:36,595 INFO L125 PetriNetUnfolderBase]: For 602183/602189 co-relation queries the response was YES. [2024-06-27 18:38:36,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43155 conditions, 5858 events. 3453/5858 cut-off events. For 602183/602189 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 39741 event pairs, 599 based on Foata normal form. 2/5815 useless extension candidates. Maximal degree in co-relation 42946. Up to 3910 conditions per place. [2024-06-27 18:38:36,688 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 343 selfloop transitions, 176 changer transitions 0/525 dead transitions. [2024-06-27 18:38:36,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 525 transitions, 8990 flow [2024-06-27 18:38:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-06-27 18:38:36,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012285012285013 [2024-06-27 18:38:36,689 INFO L175 Difference]: Start difference. First operand has 446 places, 474 transitions, 7096 flow. Second operand 11 states and 204 transitions. [2024-06-27 18:38:36,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 525 transitions, 8990 flow [2024-06-27 18:38:41,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 525 transitions, 8487 flow, removed 85 selfloop flow, removed 9 redundant places. [2024-06-27 18:38:41,322 INFO L231 Difference]: Finished difference. Result has 448 places, 478 transitions, 7310 flow [2024-06-27 18:38:41,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6593, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7310, PETRI_PLACES=448, PETRI_TRANSITIONS=478} [2024-06-27 18:38:41,322 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 407 predicate places. [2024-06-27 18:38:41,322 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 478 transitions, 7310 flow [2024-06-27 18:38:41,322 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 18:38:41,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:41,323 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 18:38:41,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:38:41,323 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 18:38:41,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:41,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1497374705, now seen corresponding path program 4 times [2024-06-27 18:38:41,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:41,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162807639] [2024-06-27 18:38:41,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:41,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:42,051 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 18:38:42,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:42,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162807639] [2024-06-27 18:38:42,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162807639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:42,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:42,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:42,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725257935] [2024-06-27 18:38:42,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:42,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:42,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:42,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:42,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:42,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:42,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 478 transitions, 7310 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 18:38:42,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:42,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:42,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:43,934 INFO L124 PetriNetUnfolderBase]: 3545/6036 cut-off events. [2024-06-27 18:38:43,934 INFO L125 PetriNetUnfolderBase]: For 741655/741655 co-relation queries the response was YES. [2024-06-27 18:38:44,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45174 conditions, 6036 events. 3545/6036 cut-off events. For 741655/741655 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 41389 event pairs, 1285 based on Foata normal form. 8/6004 useless extension candidates. Maximal degree in co-relation 44964. Up to 5269 conditions per place. [2024-06-27 18:38:44,033 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 475 selfloop transitions, 45 changer transitions 0/526 dead transitions. [2024-06-27 18:38:44,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 526 transitions, 9120 flow [2024-06-27 18:38:44,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:38:44,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:38:44,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 18:38:44,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43018018018018017 [2024-06-27 18:38:44,035 INFO L175 Difference]: Start difference. First operand has 448 places, 478 transitions, 7310 flow. Second operand 12 states and 191 transitions. [2024-06-27 18:38:44,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 526 transitions, 9120 flow [2024-06-27 18:38:48,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 526 transitions, 8717 flow, removed 101 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:48,459 INFO L231 Difference]: Finished difference. Result has 454 places, 482 transitions, 7269 flow [2024-06-27 18:38:48,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6907, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7269, PETRI_PLACES=454, PETRI_TRANSITIONS=482} [2024-06-27 18:38:48,460 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-27 18:38:48,460 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 482 transitions, 7269 flow [2024-06-27 18:38:48,460 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 18:38:48,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:48,460 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 18:38:48,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:38:48,460 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 18:38:48,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:48,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1851637745, now seen corresponding path program 5 times [2024-06-27 18:38:48,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:48,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224948431] [2024-06-27 18:38:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:48,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:48,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:49,095 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 18:38:49,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:49,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224948431] [2024-06-27 18:38:49,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224948431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:49,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:49,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:38:49,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919671009] [2024-06-27 18:38:49,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:49,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:38:49,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:49,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:38:49,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:38:49,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:49,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 482 transitions, 7269 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 18:38:49,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:49,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:49,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:50,880 INFO L124 PetriNetUnfolderBase]: 3595/6126 cut-off events. [2024-06-27 18:38:50,880 INFO L125 PetriNetUnfolderBase]: For 749861/749861 co-relation queries the response was YES. [2024-06-27 18:38:50,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45543 conditions, 6126 events. 3595/6126 cut-off events. For 749861/749861 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 42135 event pairs, 1298 based on Foata normal form. 8/6094 useless extension candidates. Maximal degree in co-relation 45330. Up to 5226 conditions per place. [2024-06-27 18:38:50,978 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 479 selfloop transitions, 47 changer transitions 0/532 dead transitions. [2024-06-27 18:38:50,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 532 transitions, 8977 flow [2024-06-27 18:38:50,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:38:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:38:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 198 transitions. [2024-06-27 18:38:50,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44594594594594594 [2024-06-27 18:38:50,979 INFO L175 Difference]: Start difference. First operand has 454 places, 482 transitions, 7269 flow. Second operand 12 states and 198 transitions. [2024-06-27 18:38:50,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 532 transitions, 8977 flow [2024-06-27 18:38:55,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 532 transitions, 8808 flow, removed 60 selfloop flow, removed 7 redundant places. [2024-06-27 18:38:55,363 INFO L231 Difference]: Finished difference. Result has 459 places, 483 transitions, 7322 flow [2024-06-27 18:38:55,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7100, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7322, PETRI_PLACES=459, PETRI_TRANSITIONS=483} [2024-06-27 18:38:55,363 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-27 18:38:55,364 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 483 transitions, 7322 flow [2024-06-27 18:38:55,364 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 18:38:55,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:38:55,364 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 18:38:55,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:38:55,364 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 18:38:55,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:38:55,365 INFO L85 PathProgramCache]: Analyzing trace with hash 354051499, now seen corresponding path program 27 times [2024-06-27 18:38:55,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:38:55,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810599528] [2024-06-27 18:38:55,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:38:55,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:38:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:38:56,168 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 18:38:56,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:38:56,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810599528] [2024-06-27 18:38:56,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810599528] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:38:56,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:38:56,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:38:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764478793] [2024-06-27 18:38:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:38:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:38:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:38:56,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:38:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:38:56,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:38:56,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 483 transitions, 7322 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 18:38:56,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:38:56,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:38:56,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:38:58,180 INFO L124 PetriNetUnfolderBase]: 3610/6141 cut-off events. [2024-06-27 18:38:58,180 INFO L125 PetriNetUnfolderBase]: For 688990/688993 co-relation queries the response was YES. [2024-06-27 18:38:58,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45711 conditions, 6141 events. 3610/6141 cut-off events. For 688990/688993 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 42257 event pairs, 572 based on Foata normal form. 2/6101 useless extension candidates. Maximal degree in co-relation 45496. Up to 4508 conditions per place. [2024-06-27 18:38:58,286 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 331 selfloop transitions, 189 changer transitions 0/526 dead transitions. [2024-06-27 18:38:58,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 526 transitions, 8696 flow [2024-06-27 18:38:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:38:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:38:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 192 transitions. [2024-06-27 18:38:58,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47174447174447176 [2024-06-27 18:38:58,287 INFO L175 Difference]: Start difference. First operand has 459 places, 483 transitions, 7322 flow. Second operand 11 states and 192 transitions. [2024-06-27 18:38:58,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 526 transitions, 8696 flow [2024-06-27 18:39:03,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 526 transitions, 8502 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-27 18:39:03,701 INFO L231 Difference]: Finished difference. Result has 460 places, 485 transitions, 7665 flow [2024-06-27 18:39:03,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7128, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7665, PETRI_PLACES=460, PETRI_TRANSITIONS=485} [2024-06-27 18:39:03,706 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-27 18:39:03,706 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 485 transitions, 7665 flow [2024-06-27 18:39:03,707 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 18:39:03,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:03,707 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 18:39:03,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:39:03,707 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 18:39:03,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash 354044989, now seen corresponding path program 28 times [2024-06-27 18:39:03,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643969788] [2024-06-27 18:39:03,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:03,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:04,546 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 18:39:04,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:04,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643969788] [2024-06-27 18:39:04,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643969788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:04,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203755391] [2024-06-27 18:39:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:04,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:04,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:04,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:04,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:04,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:04,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 485 transitions, 7665 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 18:39:04,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:04,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:04,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:06,500 INFO L124 PetriNetUnfolderBase]: 3625/6168 cut-off events. [2024-06-27 18:39:06,500 INFO L125 PetriNetUnfolderBase]: For 692158/692164 co-relation queries the response was YES. [2024-06-27 18:39:06,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46439 conditions, 6168 events. 3625/6168 cut-off events. For 692158/692164 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 42456 event pairs, 557 based on Foata normal form. 2/6126 useless extension candidates. Maximal degree in co-relation 46223. Up to 4190 conditions per place. [2024-06-27 18:39:06,617 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 331 selfloop transitions, 196 changer transitions 0/533 dead transitions. [2024-06-27 18:39:06,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 533 transitions, 9379 flow [2024-06-27 18:39:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:06,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:39:06,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 18:39:06,618 INFO L175 Difference]: Start difference. First operand has 460 places, 485 transitions, 7665 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:39:06,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 533 transitions, 9379 flow [2024-06-27 18:39:10,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 533 transitions, 8862 flow, removed 71 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:10,673 INFO L231 Difference]: Finished difference. Result has 462 places, 487 transitions, 7699 flow [2024-06-27 18:39:10,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7148, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7699, PETRI_PLACES=462, PETRI_TRANSITIONS=487} [2024-06-27 18:39:10,673 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-27 18:39:10,673 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 487 transitions, 7699 flow [2024-06-27 18:39:10,674 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 18:39:10,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:10,674 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 18:39:10,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:39:10,674 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 18:39:10,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:10,674 INFO L85 PathProgramCache]: Analyzing trace with hash 362325709, now seen corresponding path program 29 times [2024-06-27 18:39:10,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:10,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934288160] [2024-06-27 18:39:10,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:10,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:11,634 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 18:39:11,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:11,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934288160] [2024-06-27 18:39:11,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934288160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:11,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:11,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:11,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060574400] [2024-06-27 18:39:11,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:11,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:11,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:11,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:11,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:11,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:11,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 487 transitions, 7699 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 18:39:11,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:11,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:11,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:13,440 INFO L124 PetriNetUnfolderBase]: 3622/6163 cut-off events. [2024-06-27 18:39:13,440 INFO L125 PetriNetUnfolderBase]: For 675223/675229 co-relation queries the response was YES. [2024-06-27 18:39:13,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45909 conditions, 6163 events. 3622/6163 cut-off events. For 675223/675229 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 42476 event pairs, 615 based on Foata normal form. 2/6121 useless extension candidates. Maximal degree in co-relation 45692. Up to 4914 conditions per place. [2024-06-27 18:39:13,549 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 352 selfloop transitions, 171 changer transitions 0/529 dead transitions. [2024-06-27 18:39:13,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 529 transitions, 9035 flow [2024-06-27 18:39:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:13,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:39:13,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643734643734644 [2024-06-27 18:39:13,550 INFO L175 Difference]: Start difference. First operand has 462 places, 487 transitions, 7699 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:39:13,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 529 transitions, 9035 flow [2024-06-27 18:39:17,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 529 transitions, 8468 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:17,959 INFO L231 Difference]: Finished difference. Result has 464 places, 488 transitions, 7587 flow [2024-06-27 18:39:17,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7138, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7587, PETRI_PLACES=464, PETRI_TRANSITIONS=488} [2024-06-27 18:39:17,960 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 423 predicate places. [2024-06-27 18:39:17,960 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 488 transitions, 7587 flow [2024-06-27 18:39:17,960 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 18:39:17,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:17,960 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 18:39:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:39:17,960 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 18:39:17,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:17,961 INFO L85 PathProgramCache]: Analyzing trace with hash 362622937, now seen corresponding path program 6 times [2024-06-27 18:39:17,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:17,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053410785] [2024-06-27 18:39:17,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:17,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:18,662 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 18:39:18,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:18,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053410785] [2024-06-27 18:39:18,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053410785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:18,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:18,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:39:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737109505] [2024-06-27 18:39:18,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:18,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:39:18,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:18,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:39:18,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:39:18,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:18,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 488 transitions, 7587 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 18:39:18,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:18,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:18,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:20,417 INFO L124 PetriNetUnfolderBase]: 3609/6140 cut-off events. [2024-06-27 18:39:20,417 INFO L125 PetriNetUnfolderBase]: For 655668/655674 co-relation queries the response was YES. [2024-06-27 18:39:20,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43950 conditions, 6140 events. 3609/6140 cut-off events. For 655668/655674 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 42254 event pairs, 557 based on Foata normal form. 10/6106 useless extension candidates. Maximal degree in co-relation 43732. Up to 4385 conditions per place. [2024-06-27 18:39:20,526 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 343 selfloop transitions, 184 changer transitions 0/533 dead transitions. [2024-06-27 18:39:20,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 533 transitions, 8865 flow [2024-06-27 18:39:20,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:20,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:20,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:39:20,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 18:39:20,527 INFO L175 Difference]: Start difference. First operand has 464 places, 488 transitions, 7587 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:39:20,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 533 transitions, 8865 flow [2024-06-27 18:39:24,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 533 transitions, 8292 flow, removed 111 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:24,389 INFO L231 Difference]: Finished difference. Result has 466 places, 488 transitions, 7390 flow [2024-06-27 18:39:24,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7014, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7390, PETRI_PLACES=466, PETRI_TRANSITIONS=488} [2024-06-27 18:39:24,390 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 425 predicate places. [2024-06-27 18:39:24,390 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 488 transitions, 7390 flow [2024-06-27 18:39:24,390 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 18:39:24,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:24,390 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 18:39:24,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:39:24,390 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 18:39:24,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash 362633167, now seen corresponding path program 7 times [2024-06-27 18:39:24,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:24,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675465552] [2024-06-27 18:39:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:24,949 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 18:39:24,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:24,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675465552] [2024-06-27 18:39:24,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675465552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:24,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:24,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:39:24,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339889012] [2024-06-27 18:39:24,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:24,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:39:24,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:24,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:39:24,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:39:25,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:25,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 488 transitions, 7390 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 18:39:25,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:25,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:25,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:26,766 INFO L124 PetriNetUnfolderBase]: 3701/6308 cut-off events. [2024-06-27 18:39:26,767 INFO L125 PetriNetUnfolderBase]: For 713641/713647 co-relation queries the response was YES. [2024-06-27 18:39:26,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45669 conditions, 6308 events. 3701/6308 cut-off events. For 713641/713647 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 43643 event pairs, 579 based on Foata normal form. 8/6272 useless extension candidates. Maximal degree in co-relation 45450. Up to 4212 conditions per place. [2024-06-27 18:39:26,878 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 350 selfloop transitions, 183 changer transitions 0/539 dead transitions. [2024-06-27 18:39:26,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 539 transitions, 9246 flow [2024-06-27 18:39:26,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:26,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:26,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:39:26,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 18:39:26,879 INFO L175 Difference]: Start difference. First operand has 466 places, 488 transitions, 7390 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:39:26,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 539 transitions, 9246 flow [2024-06-27 18:39:31,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 539 transitions, 8857 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-27 18:39:31,656 INFO L231 Difference]: Finished difference. Result has 467 places, 490 transitions, 7623 flow [2024-06-27 18:39:31,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7003, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=488, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7623, PETRI_PLACES=467, PETRI_TRANSITIONS=490} [2024-06-27 18:39:31,657 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 18:39:31,657 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 490 transitions, 7623 flow [2024-06-27 18:39:31,657 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 18:39:31,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:31,657 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 18:39:31,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:39:31,658 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 18:39:31,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:31,658 INFO L85 PathProgramCache]: Analyzing trace with hash 591109547, now seen corresponding path program 30 times [2024-06-27 18:39:31,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:31,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913576880] [2024-06-27 18:39:31,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:31,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:32,397 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 18:39:32,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:32,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913576880] [2024-06-27 18:39:32,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913576880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:32,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:32,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:32,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786376791] [2024-06-27 18:39:32,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:32,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:32,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:32,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:32,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:32,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 490 transitions, 7623 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 18:39:32,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:32,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:32,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:34,280 INFO L124 PetriNetUnfolderBase]: 3716/6333 cut-off events. [2024-06-27 18:39:34,280 INFO L125 PetriNetUnfolderBase]: For 660342/660348 co-relation queries the response was YES. [2024-06-27 18:39:34,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46050 conditions, 6333 events. 3716/6333 cut-off events. For 660342/660348 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 43877 event pairs, 700 based on Foata normal form. 2/6291 useless extension candidates. Maximal degree in co-relation 45830. Up to 4698 conditions per place. [2024-06-27 18:39:34,392 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 362 selfloop transitions, 165 changer transitions 0/533 dead transitions. [2024-06-27 18:39:34,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 533 transitions, 9015 flow [2024-06-27 18:39:34,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:34,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-06-27 18:39:34,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48402948402948404 [2024-06-27 18:39:34,394 INFO L175 Difference]: Start difference. First operand has 467 places, 490 transitions, 7623 flow. Second operand 11 states and 197 transitions. [2024-06-27 18:39:34,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 533 transitions, 9015 flow [2024-06-27 18:39:39,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 533 transitions, 8661 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-27 18:39:39,554 INFO L231 Difference]: Finished difference. Result has 471 places, 492 transitions, 7762 flow [2024-06-27 18:39:39,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7269, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7762, PETRI_PLACES=471, PETRI_TRANSITIONS=492} [2024-06-27 18:39:39,555 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 430 predicate places. [2024-06-27 18:39:39,555 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 492 transitions, 7762 flow [2024-06-27 18:39:39,555 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 18:39:39,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:39,555 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 18:39:39,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:39:39,555 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 18:39:39,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:39,556 INFO L85 PathProgramCache]: Analyzing trace with hash 591103037, now seen corresponding path program 31 times [2024-06-27 18:39:39,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:39,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872116526] [2024-06-27 18:39:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:39,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:40,244 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 18:39:40,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:40,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872116526] [2024-06-27 18:39:40,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872116526] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:40,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:40,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:39:40,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188493245] [2024-06-27 18:39:40,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:39:40,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:40,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:39:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:39:40,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:40,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 492 transitions, 7762 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 18:39:40,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:40,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:40,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:42,102 INFO L124 PetriNetUnfolderBase]: 3713/6328 cut-off events. [2024-06-27 18:39:42,103 INFO L125 PetriNetUnfolderBase]: For 629851/629857 co-relation queries the response was YES. [2024-06-27 18:39:42,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45753 conditions, 6328 events. 3713/6328 cut-off events. For 629851/629857 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 43803 event pairs, 699 based on Foata normal form. 2/6286 useless extension candidates. Maximal degree in co-relation 45531. Up to 4491 conditions per place. [2024-06-27 18:39:42,212 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 362 selfloop transitions, 171 changer transitions 0/539 dead transitions. [2024-06-27 18:39:42,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 539 transitions, 9446 flow [2024-06-27 18:39:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:42,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:42,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:39:42,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-27 18:39:42,213 INFO L175 Difference]: Start difference. First operand has 471 places, 492 transitions, 7762 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:39:42,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 539 transitions, 9446 flow [2024-06-27 18:39:46,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 539 transitions, 8973 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:46,884 INFO L231 Difference]: Finished difference. Result has 473 places, 493 transitions, 7740 flow [2024-06-27 18:39:46,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7289, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7740, PETRI_PLACES=473, PETRI_TRANSITIONS=493} [2024-06-27 18:39:46,885 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 432 predicate places. [2024-06-27 18:39:46,885 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 493 transitions, 7740 flow [2024-06-27 18:39:46,886 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 18:39:46,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:46,886 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 18:39:46,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:39:46,886 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 18:39:46,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 599680985, now seen corresponding path program 8 times [2024-06-27 18:39:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402210209] [2024-06-27 18:39:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:47,533 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 18:39:47,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:47,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402210209] [2024-06-27 18:39:47,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402210209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:47,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:47,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:39:47,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072527440] [2024-06-27 18:39:47,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:47,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:39:47,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:47,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:39:47,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:39:47,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:47,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 493 transitions, 7740 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 18:39:47,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:47,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:47,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:49,448 INFO L124 PetriNetUnfolderBase]: 3700/6305 cut-off events. [2024-06-27 18:39:49,449 INFO L125 PetriNetUnfolderBase]: For 610390/610396 co-relation queries the response was YES. [2024-06-27 18:39:49,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43977 conditions, 6305 events. 3700/6305 cut-off events. For 610390/610396 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 43601 event pairs, 690 based on Foata normal form. 10/6271 useless extension candidates. Maximal degree in co-relation 43754. Up to 4550 conditions per place. [2024-06-27 18:39:49,557 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 365 selfloop transitions, 167 changer transitions 0/538 dead transitions. [2024-06-27 18:39:49,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 538 transitions, 9028 flow [2024-06-27 18:39:49,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 200 transitions. [2024-06-27 18:39:49,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914004914004914 [2024-06-27 18:39:49,558 INFO L175 Difference]: Start difference. First operand has 473 places, 493 transitions, 7740 flow. Second operand 11 states and 200 transitions. [2024-06-27 18:39:49,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 538 transitions, 9028 flow [2024-06-27 18:39:54,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 538 transitions, 8453 flow, removed 113 selfloop flow, removed 9 redundant places. [2024-06-27 18:39:54,227 INFO L231 Difference]: Finished difference. Result has 475 places, 493 transitions, 7507 flow [2024-06-27 18:39:54,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7165, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7507, PETRI_PLACES=475, PETRI_TRANSITIONS=493} [2024-06-27 18:39:54,240 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 434 predicate places. [2024-06-27 18:39:54,241 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 493 transitions, 7507 flow [2024-06-27 18:39:54,241 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 18:39:54,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:39:54,241 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 18:39:54,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:39:54,241 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 18:39:54,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:39:54,242 INFO L85 PathProgramCache]: Analyzing trace with hash 599691215, now seen corresponding path program 9 times [2024-06-27 18:39:54,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:39:54,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236002544] [2024-06-27 18:39:54,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:39:54,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:39:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:39:54,877 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 18:39:54,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:39:54,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236002544] [2024-06-27 18:39:54,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236002544] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:39:54,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:39:54,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:39:54,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501990397] [2024-06-27 18:39:54,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:39:54,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:39:54,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:39:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:39:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:39:54,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:39:54,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 493 transitions, 7507 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 18:39:54,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:39:54,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:39:54,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:39:56,743 INFO L124 PetriNetUnfolderBase]: 3774/6443 cut-off events. [2024-06-27 18:39:56,743 INFO L125 PetriNetUnfolderBase]: For 646911/646917 co-relation queries the response was YES. [2024-06-27 18:39:56,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45349 conditions, 6443 events. 3774/6443 cut-off events. For 646911/646917 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 44850 event pairs, 703 based on Foata normal form. 8/6407 useless extension candidates. Maximal degree in co-relation 45125. Up to 4287 conditions per place. [2024-06-27 18:39:56,851 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 371 selfloop transitions, 168 changer transitions 0/545 dead transitions. [2024-06-27 18:39:56,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 545 transitions, 9447 flow [2024-06-27 18:39:56,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:39:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:39:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-06-27 18:39:56,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4963144963144963 [2024-06-27 18:39:56,853 INFO L175 Difference]: Start difference. First operand has 475 places, 493 transitions, 7507 flow. Second operand 11 states and 202 transitions. [2024-06-27 18:39:56,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 545 transitions, 9447 flow [2024-06-27 18:40:00,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 545 transitions, 9103 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:40:00,806 INFO L231 Difference]: Finished difference. Result has 476 places, 495 transitions, 7757 flow [2024-06-27 18:40:00,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7163, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7757, PETRI_PLACES=476, PETRI_TRANSITIONS=495} [2024-06-27 18:40:00,806 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-27 18:40:00,806 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 495 transitions, 7757 flow [2024-06-27 18:40:00,807 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 18:40:00,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:00,807 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 18:40:00,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:40:00,807 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 18:40:00,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1520179797, now seen corresponding path program 32 times [2024-06-27 18:40:00,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:00,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260671372] [2024-06-27 18:40:00,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:00,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:01,599 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 18:40:01,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260671372] [2024-06-27 18:40:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260671372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:01,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:01,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:01,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078172463] [2024-06-27 18:40:01,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:01,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:01,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:01,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:01,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:01,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 495 transitions, 7757 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 18:40:01,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:01,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:01,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:03,749 INFO L124 PetriNetUnfolderBase]: 3771/6438 cut-off events. [2024-06-27 18:40:03,749 INFO L125 PetriNetUnfolderBase]: For 569205/569211 co-relation queries the response was YES. [2024-06-27 18:40:03,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45023 conditions, 6438 events. 3771/6438 cut-off events. For 569205/569211 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 44846 event pairs, 722 based on Foata normal form. 2/6396 useless extension candidates. Maximal degree in co-relation 44798. Up to 4803 conditions per place. [2024-06-27 18:40:03,849 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 343 selfloop transitions, 189 changer transitions 0/538 dead transitions. [2024-06-27 18:40:03,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 538 transitions, 9195 flow [2024-06-27 18:40:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:40:03,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:40:03,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 195 transitions. [2024-06-27 18:40:03,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47911547911547914 [2024-06-27 18:40:03,850 INFO L175 Difference]: Start difference. First operand has 476 places, 495 transitions, 7757 flow. Second operand 11 states and 195 transitions. [2024-06-27 18:40:03,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 538 transitions, 9195 flow [2024-06-27 18:40:08,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 538 transitions, 8853 flow, removed 73 selfloop flow, removed 7 redundant places. [2024-06-27 18:40:09,001 INFO L231 Difference]: Finished difference. Result has 480 places, 497 transitions, 7992 flow [2024-06-27 18:40:09,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7435, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7992, PETRI_PLACES=480, PETRI_TRANSITIONS=497} [2024-06-27 18:40:09,002 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 439 predicate places. [2024-06-27 18:40:09,002 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 497 transitions, 7992 flow [2024-06-27 18:40:09,002 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 18:40:09,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:09,002 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 18:40:09,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:40:09,003 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 18:40:09,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1520186307, now seen corresponding path program 33 times [2024-06-27 18:40:09,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:09,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943559420] [2024-06-27 18:40:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:09,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:09,787 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 18:40:09,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:09,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943559420] [2024-06-27 18:40:09,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943559420] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:09,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:09,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:09,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771692936] [2024-06-27 18:40:09,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:09,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:09,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:09,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:09,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:09,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:09,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 497 transitions, 7992 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 18:40:09,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:09,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:09,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:11,782 INFO L124 PetriNetUnfolderBase]: 3786/6463 cut-off events. [2024-06-27 18:40:11,783 INFO L125 PetriNetUnfolderBase]: For 566233/566239 co-relation queries the response was YES. [2024-06-27 18:40:11,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45764 conditions, 6463 events. 3786/6463 cut-off events. For 566233/566239 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 45108 event pairs, 722 based on Foata normal form. 2/6421 useless extension candidates. Maximal degree in co-relation 45537. Up to 4787 conditions per place. [2024-06-27 18:40:11,892 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 342 selfloop transitions, 192 changer transitions 0/540 dead transitions. [2024-06-27 18:40:11,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 540 transitions, 9434 flow [2024-06-27 18:40:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:40:11,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:40:11,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 196 transitions. [2024-06-27 18:40:11,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48157248157248156 [2024-06-27 18:40:11,894 INFO L175 Difference]: Start difference. First operand has 480 places, 497 transitions, 7992 flow. Second operand 11 states and 196 transitions. [2024-06-27 18:40:11,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 540 transitions, 9434 flow [2024-06-27 18:40:16,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 540 transitions, 8895 flow, removed 82 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:17,005 INFO L231 Difference]: Finished difference. Result has 482 places, 499 transitions, 8038 flow [2024-06-27 18:40:17,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7453, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8038, PETRI_PLACES=482, PETRI_TRANSITIONS=499} [2024-06-27 18:40:17,005 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-27 18:40:17,005 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 499 transitions, 8038 flow [2024-06-27 18:40:17,006 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 18:40:17,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:17,006 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 18:40:17,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:40:17,006 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 18:40:17,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1520359287, now seen corresponding path program 34 times [2024-06-27 18:40:17,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:17,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690163352] [2024-06-27 18:40:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:17,790 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 18:40:17,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:17,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690163352] [2024-06-27 18:40:17,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690163352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:17,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:17,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:40:17,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902180690] [2024-06-27 18:40:17,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:17,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:40:17,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:17,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:40:17,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:40:17,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:17,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 499 transitions, 8038 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 18:40:17,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:17,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:17,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:19,828 INFO L124 PetriNetUnfolderBase]: 3801/6488 cut-off events. [2024-06-27 18:40:19,829 INFO L125 PetriNetUnfolderBase]: For 575668/575674 co-relation queries the response was YES. [2024-06-27 18:40:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45974 conditions, 6488 events. 3801/6488 cut-off events. For 575668/575674 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 45300 event pairs, 722 based on Foata normal form. 2/6446 useless extension candidates. Maximal degree in co-relation 45746. Up to 4748 conditions per place. [2024-06-27 18:40:19,949 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 341 selfloop transitions, 195 changer transitions 0/542 dead transitions. [2024-06-27 18:40:19,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 542 transitions, 9486 flow [2024-06-27 18:40:19,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:40:19,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:40:19,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 18:40:19,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-06-27 18:40:19,950 INFO L175 Difference]: Start difference. First operand has 482 places, 499 transitions, 8038 flow. Second operand 11 states and 198 transitions. [2024-06-27 18:40:19,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 542 transitions, 9486 flow [2024-06-27 18:40:25,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 542 transitions, 8913 flow, removed 96 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:25,477 INFO L231 Difference]: Finished difference. Result has 484 places, 501 transitions, 8060 flow [2024-06-27 18:40:25,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7465, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8060, PETRI_PLACES=484, PETRI_TRANSITIONS=501} [2024-06-27 18:40:25,478 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 443 predicate places. [2024-06-27 18:40:25,478 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 501 transitions, 8060 flow [2024-06-27 18:40:25,481 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 18:40:25,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:25,481 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 18:40:25,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:40:25,482 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 18:40:25,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:25,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1524827937, now seen corresponding path program 35 times [2024-06-27 18:40:25,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:25,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950202814] [2024-06-27 18:40:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:25,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:25,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:26,172 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 18:40:26,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:26,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950202814] [2024-06-27 18:40:26,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950202814] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:26,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:26,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:26,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227371596] [2024-06-27 18:40:26,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:26,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:26,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:26,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:26,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:26,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:26,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 501 transitions, 8060 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 18:40:26,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:26,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:26,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:28,110 INFO L124 PetriNetUnfolderBase]: 3801/6488 cut-off events. [2024-06-27 18:40:28,111 INFO L125 PetriNetUnfolderBase]: For 557537/557543 co-relation queries the response was YES. [2024-06-27 18:40:28,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45463 conditions, 6488 events. 3801/6488 cut-off events. For 557537/557543 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 45223 event pairs, 712 based on Foata normal form. 2/6446 useless extension candidates. Maximal degree in co-relation 45234. Up to 3686 conditions per place. [2024-06-27 18:40:28,232 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 303 selfloop transitions, 239 changer transitions 0/548 dead transitions. [2024-06-27 18:40:28,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 548 transitions, 9562 flow [2024-06-27 18:40:28,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:40:28,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:40:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:40:28,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48894348894348894 [2024-06-27 18:40:28,237 INFO L175 Difference]: Start difference. First operand has 484 places, 501 transitions, 8060 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:40:28,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 548 transitions, 9562 flow [2024-06-27 18:40:34,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 548 transitions, 8983 flow, removed 96 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:34,182 INFO L231 Difference]: Finished difference. Result has 486 places, 503 transitions, 8168 flow [2024-06-27 18:40:34,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7481, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8168, PETRI_PLACES=486, PETRI_TRANSITIONS=503} [2024-06-27 18:40:34,182 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 445 predicate places. [2024-06-27 18:40:34,182 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 503 transitions, 8168 flow [2024-06-27 18:40:34,183 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 18:40:34,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:34,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:34,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:40:34,183 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 18:40:34,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:34,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2018548261, now seen corresponding path program 1 times [2024-06-27 18:40:34,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:34,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862320576] [2024-06-27 18:40:34,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:34,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:34,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:35,227 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 18:40:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:35,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862320576] [2024-06-27 18:40:35,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862320576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:35,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:35,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 18:40:35,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585138700] [2024-06-27 18:40:35,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:35,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:40:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:35,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:40:35,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:40:35,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:35,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 503 transitions, 8168 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:35,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:35,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:35,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:37,469 INFO L124 PetriNetUnfolderBase]: 3921/6709 cut-off events. [2024-06-27 18:40:37,469 INFO L125 PetriNetUnfolderBase]: For 614561/614561 co-relation queries the response was YES. [2024-06-27 18:40:37,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46710 conditions, 6709 events. 3921/6709 cut-off events. For 614561/614561 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 47350 event pairs, 1425 based on Foata normal form. 6/6675 useless extension candidates. Maximal degree in co-relation 46480. Up to 6276 conditions per place. [2024-06-27 18:40:37,571 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 526 selfloop transitions, 50 changer transitions 0/582 dead transitions. [2024-06-27 18:40:37,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 582 transitions, 9963 flow [2024-06-27 18:40:37,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:40:37,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:40:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 207 transitions. [2024-06-27 18:40:37,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303534303534304 [2024-06-27 18:40:37,573 INFO L175 Difference]: Start difference. First operand has 486 places, 503 transitions, 8168 flow. Second operand 13 states and 207 transitions. [2024-06-27 18:40:37,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 582 transitions, 9963 flow [2024-06-27 18:40:43,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 582 transitions, 9282 flow, removed 98 selfloop flow, removed 9 redundant places. [2024-06-27 18:40:43,358 INFO L231 Difference]: Finished difference. Result has 496 places, 525 transitions, 8065 flow [2024-06-27 18:40:43,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7497, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8065, PETRI_PLACES=496, PETRI_TRANSITIONS=525} [2024-06-27 18:40:43,358 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 455 predicate places. [2024-06-27 18:40:43,359 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 525 transitions, 8065 flow [2024-06-27 18:40:43,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:43,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:43,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:43,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:40:43,359 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 18:40:43,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:43,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1018374603, now seen corresponding path program 2 times [2024-06-27 18:40:43,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:43,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059960942] [2024-06-27 18:40:43,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:43,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:44,044 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 18:40:44,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:44,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059960942] [2024-06-27 18:40:44,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059960942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:44,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:44,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:40:44,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207697631] [2024-06-27 18:40:44,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:44,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:40:44,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:44,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:40:44,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:40:44,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:44,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 525 transitions, 8065 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:44,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:44,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:44,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:46,496 INFO L124 PetriNetUnfolderBase]: 4779/8109 cut-off events. [2024-06-27 18:40:46,497 INFO L125 PetriNetUnfolderBase]: For 629615/629615 co-relation queries the response was YES. [2024-06-27 18:40:46,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54531 conditions, 8109 events. 4779/8109 cut-off events. For 629615/629615 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 58280 event pairs, 1483 based on Foata normal form. 6/8074 useless extension candidates. Maximal degree in co-relation 54294. Up to 6662 conditions per place. [2024-06-27 18:40:46,637 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 578 selfloop transitions, 128 changer transitions 0/712 dead transitions. [2024-06-27 18:40:46,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 712 transitions, 11687 flow [2024-06-27 18:40:46,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:40:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:40:46,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 18:40:46,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:40:46,638 INFO L175 Difference]: Start difference. First operand has 496 places, 525 transitions, 8065 flow. Second operand 12 states and 201 transitions. [2024-06-27 18:40:46,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 712 transitions, 11687 flow [2024-06-27 18:40:52,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 712 transitions, 11489 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-27 18:40:52,403 INFO L231 Difference]: Finished difference. Result has 508 places, 618 transitions, 9839 flow [2024-06-27 18:40:52,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=7867, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=9839, PETRI_PLACES=508, PETRI_TRANSITIONS=618} [2024-06-27 18:40:52,403 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 467 predicate places. [2024-06-27 18:40:52,403 INFO L495 AbstractCegarLoop]: Abstraction has has 508 places, 618 transitions, 9839 flow [2024-06-27 18:40:52,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:52,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:40:52,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:40:52,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:40:52,404 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 18:40:52,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:40:52,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1324022165, now seen corresponding path program 3 times [2024-06-27 18:40:52,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:40:52,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519370673] [2024-06-27 18:40:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:40:52,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:40:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:40:53,390 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 18:40:53,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:40:53,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519370673] [2024-06-27 18:40:53,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519370673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:40:53,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:40:53,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 18:40:53,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156330216] [2024-06-27 18:40:53,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:40:53,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:40:53,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:40:53,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:40:53,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:40:53,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:40:53,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 618 transitions, 9839 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:40:53,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:40:53,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:40:53,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:40:56,104 INFO L124 PetriNetUnfolderBase]: 5017/8510 cut-off events. [2024-06-27 18:40:56,104 INFO L125 PetriNetUnfolderBase]: For 643891/643891 co-relation queries the response was YES. [2024-06-27 18:40:56,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58818 conditions, 8510 events. 5017/8510 cut-off events. For 643891/643891 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 61602 event pairs, 1676 based on Foata normal form. 6/8476 useless extension candidates. Maximal degree in co-relation 58575. Up to 7888 conditions per place. [2024-06-27 18:40:56,270 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 627 selfloop transitions, 76 changer transitions 0/709 dead transitions. [2024-06-27 18:40:56,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 709 transitions, 12401 flow [2024-06-27 18:40:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:40:56,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:40:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 216 transitions. [2024-06-27 18:40:56,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4490644490644491 [2024-06-27 18:40:56,272 INFO L175 Difference]: Start difference. First operand has 508 places, 618 transitions, 9839 flow. Second operand 13 states and 216 transitions. [2024-06-27 18:40:56,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 709 transitions, 12401 flow [2024-06-27 18:41:03,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 515 places, 709 transitions, 12138 flow, removed 66 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:03,498 INFO L231 Difference]: Finished difference. Result has 521 places, 652 transitions, 10679 flow [2024-06-27 18:41:03,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9590, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10679, PETRI_PLACES=521, PETRI_TRANSITIONS=652} [2024-06-27 18:41:03,499 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 480 predicate places. [2024-06-27 18:41:03,499 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 652 transitions, 10679 flow [2024-06-27 18:41:03,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:03,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:03,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:03,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:41:03,500 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 18:41:03,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:03,500 INFO L85 PathProgramCache]: Analyzing trace with hash -143895127, now seen corresponding path program 4 times [2024-06-27 18:41:03,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:03,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437672698] [2024-06-27 18:41:03,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:03,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:04,362 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 18:41:04,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:04,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437672698] [2024-06-27 18:41:04,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437672698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:04,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:04,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 18:41:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94930827] [2024-06-27 18:41:04,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:04,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:41:04,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:41:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:41:04,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:04,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 652 transitions, 10679 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:04,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:04,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:04,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:07,769 INFO L124 PetriNetUnfolderBase]: 5052/8577 cut-off events. [2024-06-27 18:41:07,769 INFO L125 PetriNetUnfolderBase]: For 654432/654432 co-relation queries the response was YES. [2024-06-27 18:41:07,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59354 conditions, 8577 events. 5052/8577 cut-off events. For 654432/654432 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 62193 event pairs, 1751 based on Foata normal form. 6/8543 useless extension candidates. Maximal degree in co-relation 59105. Up to 8045 conditions per place. [2024-06-27 18:41:07,933 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 631 selfloop transitions, 73 changer transitions 0/710 dead transitions. [2024-06-27 18:41:07,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 710 transitions, 12546 flow [2024-06-27 18:41:07,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:41:07,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:41:07,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2024-06-27 18:41:07,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44490644490644493 [2024-06-27 18:41:07,935 INFO L175 Difference]: Start difference. First operand has 521 places, 652 transitions, 10679 flow. Second operand 13 states and 214 transitions. [2024-06-27 18:41:07,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 710 transitions, 12546 flow [2024-06-27 18:41:15,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 710 transitions, 12316 flow, removed 67 selfloop flow, removed 5 redundant places. [2024-06-27 18:41:15,287 INFO L231 Difference]: Finished difference. Result has 531 places, 656 transitions, 10814 flow [2024-06-27 18:41:15,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10449, PETRI_DIFFERENCE_MINUEND_PLACES=516, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10814, PETRI_PLACES=531, PETRI_TRANSITIONS=656} [2024-06-27 18:41:15,288 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 490 predicate places. [2024-06-27 18:41:15,288 INFO L495 AbstractCegarLoop]: Abstraction has has 531 places, 656 transitions, 10814 flow [2024-06-27 18:41:15,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:15,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:15,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:15,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:41:15,288 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 18:41:15,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:15,289 INFO L85 PathProgramCache]: Analyzing trace with hash -137639017, now seen corresponding path program 5 times [2024-06-27 18:41:15,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:15,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345948554] [2024-06-27 18:41:15,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:15,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:16,333 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 18:41:16,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:16,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345948554] [2024-06-27 18:41:16,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345948554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:16,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:16,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 18:41:16,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115435958] [2024-06-27 18:41:16,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:16,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:41:16,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:16,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:41:16,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:41:16,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:16,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 656 transitions, 10814 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:16,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:16,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:16,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:19,646 INFO L124 PetriNetUnfolderBase]: 5087/8642 cut-off events. [2024-06-27 18:41:19,646 INFO L125 PetriNetUnfolderBase]: For 654417/654417 co-relation queries the response was YES. [2024-06-27 18:41:19,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59663 conditions, 8642 events. 5087/8642 cut-off events. For 654417/654417 co-relation queries the response was YES. Maximal size of possible extension queue 574. Compared 62826 event pairs, 1792 based on Foata normal form. 6/8608 useless extension candidates. Maximal degree in co-relation 59411. Up to 8156 conditions per place. [2024-06-27 18:41:19,814 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 634 selfloop transitions, 71 changer transitions 0/711 dead transitions. [2024-06-27 18:41:19,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 711 transitions, 12580 flow [2024-06-27 18:41:19,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:41:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:41:19,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-27 18:41:19,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44282744282744285 [2024-06-27 18:41:19,815 INFO L175 Difference]: Start difference. First operand has 531 places, 656 transitions, 10814 flow. Second operand 13 states and 213 transitions. [2024-06-27 18:41:19,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 711 transitions, 12580 flow [2024-06-27 18:41:27,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 711 transitions, 12332 flow, removed 68 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:27,548 INFO L231 Difference]: Finished difference. Result has 538 places, 659 transitions, 10852 flow [2024-06-27 18:41:27,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10566, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10852, PETRI_PLACES=538, PETRI_TRANSITIONS=659} [2024-06-27 18:41:27,565 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 497 predicate places. [2024-06-27 18:41:27,565 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 659 transitions, 10852 flow [2024-06-27 18:41:27,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:27,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:27,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:27,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:41:27,565 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 18:41:27,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:27,566 INFO L85 PathProgramCache]: Analyzing trace with hash 31571279, now seen corresponding path program 6 times [2024-06-27 18:41:27,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:27,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079138752] [2024-06-27 18:41:27,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:28,508 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 18:41:28,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:28,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079138752] [2024-06-27 18:41:28,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079138752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:28,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:28,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 18:41:28,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999463075] [2024-06-27 18:41:28,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:28,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:41:28,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:28,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:41:28,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:41:28,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:28,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 659 transitions, 10852 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:28,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:28,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:28,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:32,109 INFO L124 PetriNetUnfolderBase]: 5250/8923 cut-off events. [2024-06-27 18:41:32,109 INFO L125 PetriNetUnfolderBase]: For 664419/664419 co-relation queries the response was YES. [2024-06-27 18:41:32,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61097 conditions, 8923 events. 5250/8923 cut-off events. For 664419/664419 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 65066 event pairs, 1781 based on Foata normal form. 6/8889 useless extension candidates. Maximal degree in co-relation 60843. Up to 8361 conditions per place. [2024-06-27 18:41:32,266 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 658 selfloop transitions, 65 changer transitions 0/729 dead transitions. [2024-06-27 18:41:32,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 729 transitions, 12830 flow [2024-06-27 18:41:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:41:32,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:41:32,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 207 transitions. [2024-06-27 18:41:32,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303534303534304 [2024-06-27 18:41:32,267 INFO L175 Difference]: Start difference. First operand has 538 places, 659 transitions, 10852 flow. Second operand 13 states and 207 transitions. [2024-06-27 18:41:32,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 729 transitions, 12830 flow [2024-06-27 18:41:40,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 729 transitions, 12618 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 18:41:40,682 INFO L231 Difference]: Finished difference. Result has 547 places, 678 transitions, 11162 flow [2024-06-27 18:41:40,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10640, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=11162, PETRI_PLACES=547, PETRI_TRANSITIONS=678} [2024-06-27 18:41:40,682 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 506 predicate places. [2024-06-27 18:41:40,682 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 678 transitions, 11162 flow [2024-06-27 18:41:40,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:40,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:40,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:40,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:41:40,683 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 18:41:40,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1558379945, now seen corresponding path program 7 times [2024-06-27 18:41:40,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:40,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216322607] [2024-06-27 18:41:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:40,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:41,448 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 18:41:41,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:41,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216322607] [2024-06-27 18:41:41,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216322607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:41,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:41,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:41,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380726606] [2024-06-27 18:41:41,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:41,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:41,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:41,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:41,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 678 transitions, 11162 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:41,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:41,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:41,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:45,093 INFO L124 PetriNetUnfolderBase]: 5429/9248 cut-off events. [2024-06-27 18:41:45,093 INFO L125 PetriNetUnfolderBase]: For 709097/709097 co-relation queries the response was YES. [2024-06-27 18:41:45,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64588 conditions, 9248 events. 5429/9248 cut-off events. For 709097/709097 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 68438 event pairs, 1859 based on Foata normal form. 6/9213 useless extension candidates. Maximal degree in co-relation 64328. Up to 8410 conditions per place. [2024-06-27 18:41:45,393 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 669 selfloop transitions, 82 changer transitions 0/757 dead transitions. [2024-06-27 18:41:45,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 757 transitions, 13911 flow [2024-06-27 18:41:45,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:41:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:41:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 18:41:45,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-06-27 18:41:45,394 INFO L175 Difference]: Start difference. First operand has 547 places, 678 transitions, 11162 flow. Second operand 12 states and 192 transitions. [2024-06-27 18:41:45,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 757 transitions, 13911 flow [2024-06-27 18:41:53,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 551 places, 757 transitions, 13512 flow, removed 142 selfloop flow, removed 7 redundant places. [2024-06-27 18:41:53,215 INFO L231 Difference]: Finished difference. Result has 557 places, 706 transitions, 12074 flow [2024-06-27 18:41:53,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10913, PETRI_DIFFERENCE_MINUEND_PLACES=540, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12074, PETRI_PLACES=557, PETRI_TRANSITIONS=706} [2024-06-27 18:41:53,215 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 516 predicate places. [2024-06-27 18:41:53,215 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 706 transitions, 12074 flow [2024-06-27 18:41:53,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:53,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:41:53,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:41:53,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 18:41:53,216 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 18:41:53,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:41:53,216 INFO L85 PathProgramCache]: Analyzing trace with hash 618931669, now seen corresponding path program 8 times [2024-06-27 18:41:53,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:41:53,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626792512] [2024-06-27 18:41:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:41:53,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:41:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:41:54,022 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 18:41:54,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:41:54,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626792512] [2024-06-27 18:41:54,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626792512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:41:54,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:41:54,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:41:54,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738272053] [2024-06-27 18:41:54,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:41:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:41:54,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:41:54,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:41:54,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:41:54,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:41:54,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 706 transitions, 12074 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:41:54,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:41:54,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:41:54,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:41:57,542 INFO L124 PetriNetUnfolderBase]: 5464/9313 cut-off events. [2024-06-27 18:41:57,542 INFO L125 PetriNetUnfolderBase]: For 703210/703210 co-relation queries the response was YES. [2024-06-27 18:41:57,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64980 conditions, 9313 events. 5464/9313 cut-off events. For 703210/703210 co-relation queries the response was YES. Maximal size of possible extension queue 623. Compared 69017 event pairs, 1746 based on Foata normal form. 6/9278 useless extension candidates. Maximal degree in co-relation 64715. Up to 7723 conditions per place. [2024-06-27 18:41:57,715 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 634 selfloop transitions, 157 changer transitions 0/797 dead transitions. [2024-06-27 18:41:57,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 797 transitions, 14593 flow [2024-06-27 18:41:57,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:41:57,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:41:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 18:41:57,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527027027027027 [2024-06-27 18:41:57,716 INFO L175 Difference]: Start difference. First operand has 557 places, 706 transitions, 12074 flow. Second operand 12 states and 201 transitions. [2024-06-27 18:41:57,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 797 transitions, 14593 flow [2024-06-27 18:42:06,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 797 transitions, 13946 flow, removed 303 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:06,598 INFO L231 Difference]: Finished difference. Result has 568 places, 720 transitions, 12169 flow [2024-06-27 18:42:06,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11427, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=549, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12169, PETRI_PLACES=568, PETRI_TRANSITIONS=720} [2024-06-27 18:42:06,598 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 527 predicate places. [2024-06-27 18:42:06,598 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 720 transitions, 12169 flow [2024-06-27 18:42:06,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:06,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:06,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:06,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 18:42:06,599 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 18:42:06,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:06,599 INFO L85 PathProgramCache]: Analyzing trace with hash 624294049, now seen corresponding path program 9 times [2024-06-27 18:42:06,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:06,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889165900] [2024-06-27 18:42:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:06,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:07,371 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 18:42:07,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:07,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889165900] [2024-06-27 18:42:07,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889165900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:07,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:07,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:07,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568716302] [2024-06-27 18:42:07,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:07,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:07,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:07,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:07,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:07,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:07,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 720 transitions, 12169 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:07,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:07,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:07,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:11,116 INFO L124 PetriNetUnfolderBase]: 5499/9378 cut-off events. [2024-06-27 18:42:11,116 INFO L125 PetriNetUnfolderBase]: For 705811/705811 co-relation queries the response was YES. [2024-06-27 18:42:11,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65897 conditions, 9378 events. 5499/9378 cut-off events. For 705811/705811 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 69560 event pairs, 1822 based on Foata normal form. 6/9343 useless extension candidates. Maximal degree in co-relation 65627. Up to 8097 conditions per place. [2024-06-27 18:42:11,287 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 645 selfloop transitions, 147 changer transitions 0/798 dead transitions. [2024-06-27 18:42:11,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 798 transitions, 14551 flow [2024-06-27 18:42:11,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:42:11,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:42:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 18:42:11,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:42:11,288 INFO L175 Difference]: Start difference. First operand has 568 places, 720 transitions, 12169 flow. Second operand 12 states and 200 transitions. [2024-06-27 18:42:11,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 798 transitions, 14551 flow [2024-06-27 18:42:20,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 798 transitions, 14199 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:20,813 INFO L231 Difference]: Finished difference. Result has 576 places, 733 transitions, 12527 flow [2024-06-27 18:42:20,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=11819, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12527, PETRI_PLACES=576, PETRI_TRANSITIONS=733} [2024-06-27 18:42:20,813 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 535 predicate places. [2024-06-27 18:42:20,813 INFO L495 AbstractCegarLoop]: Abstraction has has 576 places, 733 transitions, 12527 flow [2024-06-27 18:42:20,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:20,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:20,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:20,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 18:42:20,814 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 18:42:20,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1089809901, now seen corresponding path program 10 times [2024-06-27 18:42:20,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:20,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669735825] [2024-06-27 18:42:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:20,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:21,603 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 18:42:21,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:21,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669735825] [2024-06-27 18:42:21,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669735825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:21,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:21,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:42:21,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567272294] [2024-06-27 18:42:21,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:21,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:42:21,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:21,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:42:21,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:42:21,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:21,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 733 transitions, 12527 flow. Second operand has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:21,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:21,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:21,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:25,325 INFO L124 PetriNetUnfolderBase]: 5534/9443 cut-off events. [2024-06-27 18:42:25,326 INFO L125 PetriNetUnfolderBase]: For 696931/696931 co-relation queries the response was YES. [2024-06-27 18:42:25,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66498 conditions, 9443 events. 5534/9443 cut-off events. For 696931/696931 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 70199 event pairs, 1904 based on Foata normal form. 6/9408 useless extension candidates. Maximal degree in co-relation 66225. Up to 8371 conditions per place. [2024-06-27 18:42:25,510 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 658 selfloop transitions, 135 changer transitions 0/799 dead transitions. [2024-06-27 18:42:25,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 799 transitions, 14686 flow [2024-06-27 18:42:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:42:25,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:42:25,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 18:42:25,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-06-27 18:42:25,512 INFO L175 Difference]: Start difference. First operand has 576 places, 733 transitions, 12527 flow. Second operand 12 states and 200 transitions. [2024-06-27 18:42:25,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 799 transitions, 14686 flow [2024-06-27 18:42:35,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 799 transitions, 14337 flow, removed 75 selfloop flow, removed 6 redundant places. [2024-06-27 18:42:35,184 INFO L231 Difference]: Finished difference. Result has 583 places, 742 transitions, 12729 flow [2024-06-27 18:42:35,185 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12178, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12729, PETRI_PLACES=583, PETRI_TRANSITIONS=742} [2024-06-27 18:42:35,185 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 542 predicate places. [2024-06-27 18:42:35,185 INFO L495 AbstractCegarLoop]: Abstraction has has 583 places, 742 transitions, 12729 flow [2024-06-27 18:42:35,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.416666666666666) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:35,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:35,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:35,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 18:42:35,185 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 18:42:35,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1507493831, now seen corresponding path program 11 times [2024-06-27 18:42:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:35,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329776452] [2024-06-27 18:42:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:35,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:36,237 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 18:42:36,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:36,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329776452] [2024-06-27 18:42:36,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329776452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:36,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:36,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 18:42:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169263768] [2024-06-27 18:42:36,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:36,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:42:36,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:42:36,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:42:36,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:36,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 742 transitions, 12729 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:36,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:36,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:36,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:39,940 INFO L124 PetriNetUnfolderBase]: 5576/9521 cut-off events. [2024-06-27 18:42:39,941 INFO L125 PetriNetUnfolderBase]: For 700022/700022 co-relation queries the response was YES. [2024-06-27 18:42:40,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67138 conditions, 9521 events. 5576/9521 cut-off events. For 700022/700022 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 70739 event pairs, 1793 based on Foata normal form. 6/9487 useless extension candidates. Maximal degree in co-relation 66863. Up to 8332 conditions per place. [2024-06-27 18:42:40,132 INFO L140 encePairwiseOnDemand]: 24/37 looper letters, 685 selfloop transitions, 100 changer transitions 0/791 dead transitions. [2024-06-27 18:42:40,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 791 transitions, 14670 flow [2024-06-27 18:42:40,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:42:40,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:42:40,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 190 transitions. [2024-06-27 18:42:40,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42792792792792794 [2024-06-27 18:42:40,134 INFO L175 Difference]: Start difference. First operand has 583 places, 742 transitions, 12729 flow. Second operand 12 states and 190 transitions. [2024-06-27 18:42:40,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 791 transitions, 14670 flow [2024-06-27 18:42:50,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 791 transitions, 14386 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 18:42:50,227 INFO L231 Difference]: Finished difference. Result has 588 places, 744 transitions, 12820 flow [2024-06-27 18:42:50,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12445, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=742, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=642, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12820, PETRI_PLACES=588, PETRI_TRANSITIONS=744} [2024-06-27 18:42:50,227 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 547 predicate places. [2024-06-27 18:42:50,227 INFO L495 AbstractCegarLoop]: Abstraction has has 588 places, 744 transitions, 12820 flow [2024-06-27 18:42:50,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:50,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:50,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:50,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 18:42:50,228 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 18:42:50,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:50,228 INFO L85 PathProgramCache]: Analyzing trace with hash 2000093757, now seen corresponding path program 12 times [2024-06-27 18:42:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:50,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834473786] [2024-06-27 18:42:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:51,086 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 18:42:51,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:51,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834473786] [2024-06-27 18:42:51,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834473786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:51,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:51,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 18:42:51,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280734805] [2024-06-27 18:42:51,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:51,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 18:42:51,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:51,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 18:42:51,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-27 18:42:51,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:42:51,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 588 places, 744 transitions, 12820 flow. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:51,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:51,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:42:51,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:54,774 INFO L124 PetriNetUnfolderBase]: 5646/9661 cut-off events. [2024-06-27 18:42:54,775 INFO L125 PetriNetUnfolderBase]: For 711266/711266 co-relation queries the response was YES. [2024-06-27 18:42:55,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67897 conditions, 9661 events. 5646/9661 cut-off events. For 711266/711266 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 72427 event pairs, 1934 based on Foata normal form. 6/9627 useless extension candidates. Maximal degree in co-relation 67621. Up to 8130 conditions per place. [2024-06-27 18:42:55,150 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 653 selfloop transitions, 135 changer transitions 0/794 dead transitions. [2024-06-27 18:42:55,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 794 transitions, 14778 flow [2024-06-27 18:42:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:42:55,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:42:55,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 199 transitions. [2024-06-27 18:42:55,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44819819819819817 [2024-06-27 18:42:55,151 INFO L175 Difference]: Start difference. First operand has 588 places, 744 transitions, 12820 flow. Second operand 12 states and 199 transitions. [2024-06-27 18:42:55,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 794 transitions, 14778 flow [2024-06-27 18:43:05,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 794 transitions, 14438 flow, removed 76 selfloop flow, removed 10 redundant places. [2024-06-27 18:43:05,570 INFO L231 Difference]: Finished difference. Result has 590 places, 746 transitions, 12914 flow [2024-06-27 18:43:05,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=12484, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=744, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=12914, PETRI_PLACES=590, PETRI_TRANSITIONS=746} [2024-06-27 18:43:05,571 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 549 predicate places. [2024-06-27 18:43:05,571 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 746 transitions, 12914 flow [2024-06-27 18:43:05,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 14 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:05,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:05,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:05,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 18:43:05,572 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 18:43:05,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1888715075, now seen corresponding path program 13 times [2024-06-27 18:43:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:05,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733191757] [2024-06-27 18:43:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:06,466 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 18:43:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733191757] [2024-06-27 18:43:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733191757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:06,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:06,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:43:06,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412588269] [2024-06-27 18:43:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:43:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:06,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:43:06,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:43:06,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-06-27 18:43:06,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 746 transitions, 12914 flow. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 13 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:06,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:06,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-06-27 18:43:06,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand