./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i ./goblint.2024-06-19_11-23-25.files/protection/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.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 19:04:54,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:04:54,691 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:04:54,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:04:54,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:04:54,720 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:04:54,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:04:54,721 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:04:54,721 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:04:54,722 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:04:54,722 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:04:54,722 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:04:54,723 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:04:54,723 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:04:54,723 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:04:54,724 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:04:54,724 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:04:54,724 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:04:54,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:04:54,725 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:04:54,725 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:04:54,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:04:54,726 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:04:54,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:04:54,726 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:04:54,726 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:04:54,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:04:54,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:04:54,727 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:04:54,727 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:04:54,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:04:54,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:04:54,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:04:54,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:04:54,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:04:54,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:04:54,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:04:54,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:04:54,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:04:54,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:04:54,730 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:04:54,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:04:54,730 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:04:54,730 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 19:04:54,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:04:54,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:04:54,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:04:54,897 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:04:54,898 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:04:54,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.yml/witness.yml [2024-06-27 19:04:55,064 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:04:55,066 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:04:55,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:04:56,175 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:04:56,440 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:04:56,440 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:04:56,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a849ddf/6c1f7505e6ac412ca109c1d7b199c994/FLAGc1628ab0d [2024-06-27 19:04:56,468 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0a849ddf/6c1f7505e6ac412ca109c1d7b199c994 [2024-06-27 19:04:56,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:04:56,471 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:04:56,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:04:56,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:04:56,477 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:04:56,477 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:04:55" (1/2) ... [2024-06-27 19:04:56,479 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2621157b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:04:56, skipping insertion in model container [2024-06-27 19:04:56,479 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:04:55" (1/2) ... [2024-06-27 19:04:56,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77bdf7e7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:04:56, skipping insertion in model container [2024-06-27 19:04:56,480 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:04:56" (2/2) ... [2024-06-27 19:04:56,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2621157b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:56, skipping insertion in model container [2024-06-27 19:04:56,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:04:56" (2/2) ... [2024-06-27 19:04:56,482 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:04:56,540 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:04:56,542 INFO L97 edCorrectnessWitness]: Location invariant before [L811-L811] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-27 19:04:56,542 INFO L97 edCorrectnessWitness]: Location invariant before [L810-L810] ((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$flush_delayed == (_Bool)0) [2024-06-27 19:04:56,543 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:04:56,543 INFO L106 edCorrectnessWitness]: ghost_update [L808-L808] multithreaded = 1; [2024-06-27 19:04:56,585 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:04:56,725 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/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] [2024-06-27 19:04:56,890 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:04:56,910 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 19:04:56,940 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/safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[996,1009] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:04:57,007 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:04:57,044 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:04:57,045 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57 WrapperNode [2024-06-27 19:04:57,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:04:57,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:04:57,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:04:57,047 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:04:57,052 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,076 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,108 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 109 [2024-06-27 19:04:57,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:04:57,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:04:57,110 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:04:57,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:04:57,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,140 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,163 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 19:04:57,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,163 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,168 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,178 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,180 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,182 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:04:57,183 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:04:57,183 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:04:57,183 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:04:57,183 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (1/1) ... [2024-06-27 19:04:57,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:04:57,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:04:57,210 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 19:04:57,212 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 19:04:57,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:04:57,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:04:57,240 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:04:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:04:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:04:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:04:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:04:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:04:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:04:57,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:04:57,242 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 19:04:57,337 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:04:57,338 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:04:57,610 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:04:57,611 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:04:57,714 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:04:57,714 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:04:57,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:04:57 BoogieIcfgContainer [2024-06-27 19:04:57,715 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:04:57,717 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:04:57,717 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:04:57,720 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:04:57,720 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:04:55" (1/4) ... [2024-06-27 19:04:57,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd825e and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:04:57, skipping insertion in model container [2024-06-27 19:04:57,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:04:56" (2/4) ... [2024-06-27 19:04:57,721 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd825e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:04:57, skipping insertion in model container [2024-06-27 19:04:57,721 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:04:57" (3/4) ... [2024-06-27 19:04:57,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6abd825e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:04:57, skipping insertion in model container [2024-06-27 19:04:57,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:04:57" (4/4) ... [2024-06-27 19:04:57,724 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2024-06-27 19:04:57,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:04:57,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 19:04:57,738 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:04:57,792 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:04:57,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 35 transitions, 78 flow [2024-06-27 19:04:57,851 INFO L124 PetriNetUnfolderBase]: 1/33 cut-off events. [2024-06-27 19:04:57,852 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:04:57,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 1/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2024-06-27 19:04:57,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 35 transitions, 78 flow [2024-06-27 19:04:57,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 33 transitions, 72 flow [2024-06-27 19:04:57,870 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:04:57,877 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;@6aa56f18, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:04:57,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 19:04:57,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:04:57,881 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:04:57,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:04:57,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:57,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:04:57,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:04:57,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:57,918 INFO L85 PathProgramCache]: Analyzing trace with hash 307898557, now seen corresponding path program 1 times [2024-06-27 19:04:57,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:57,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734362602] [2024-06-27 19:04:57,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:57,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:58,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:58,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:58,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734362602] [2024-06-27 19:04:58,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734362602] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:58,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:58,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:04:58,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531967313] [2024-06-27 19:04:58,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:58,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:04:58,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:58,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:04:58,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:04:58,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-06-27 19:04:58,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 72 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 19:04:58,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:58,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-06-27 19:04:58,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:58,831 INFO L124 PetriNetUnfolderBase]: 385/803 cut-off events. [2024-06-27 19:04:58,831 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 19:04:58,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 803 events. 385/803 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4352 event pairs, 271 based on Foata normal form. 38/761 useless extension candidates. Maximal degree in co-relation 1467. Up to 624 conditions per place. [2024-06-27 19:04:58,840 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 31 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 19:04:58,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 45 transitions, 169 flow [2024-06-27 19:04:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:04:58,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:04:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2024-06-27 19:04:58,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2024-06-27 19:04:58,852 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 72 flow. Second operand 3 states and 75 transitions. [2024-06-27 19:04:58,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 45 transitions, 169 flow [2024-06-27 19:04:58,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:04:58,857 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 96 flow [2024-06-27 19:04:58,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-06-27 19:04:58,861 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-06-27 19:04:58,862 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 96 flow [2024-06-27 19:04:58,862 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 19:04:58,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:58,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:04:58,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:04:58,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:04:58,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash 307899458, now seen corresponding path program 1 times [2024-06-27 19:04:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:58,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567000078] [2024-06-27 19:04:58,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:58,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:58,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:58,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:58,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567000078] [2024-06-27 19:04:58,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567000078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:58,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:58,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:04:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960428073] [2024-06-27 19:04:58,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:58,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:04:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:04:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:04:58,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2024-06-27 19:04:58,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:58,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:58,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2024-06-27 19:04:58,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:59,004 INFO L124 PetriNetUnfolderBase]: 149/343 cut-off events. [2024-06-27 19:04:59,004 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-06-27 19:04:59,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 343 events. 149/343 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1712 event pairs, 30 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 681. Up to 218 conditions per place. [2024-06-27 19:04:59,006 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 23 selfloop transitions, 3 changer transitions 2/44 dead transitions. [2024-06-27 19:04:59,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 44 transitions, 167 flow [2024-06-27 19:04:59,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:04:59,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:04:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-06-27 19:04:59,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7523809523809524 [2024-06-27 19:04:59,007 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 96 flow. Second operand 3 states and 79 transitions. [2024-06-27 19:04:59,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 44 transitions, 167 flow [2024-06-27 19:04:59,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 44 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:04:59,009 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 88 flow [2024-06-27 19:04:59,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-27 19:04:59,010 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2024-06-27 19:04:59,010 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 88 flow [2024-06-27 19:04:59,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:59,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:59,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:59,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:04:59,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:04:59,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:59,011 INFO L85 PathProgramCache]: Analyzing trace with hash -461382653, now seen corresponding path program 1 times [2024-06-27 19:04:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:59,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778738308] [2024-06-27 19:04:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:59,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:04:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:04:59,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:04:59,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778738308] [2024-06-27 19:04:59,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778738308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:04:59,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:04:59,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:04:59,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649723945] [2024-06-27 19:04:59,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:04:59,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:04:59,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:04:59,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:04:59,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:04:59,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 35 [2024-06-27 19:04:59,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 88 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:59,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:04:59,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 35 [2024-06-27 19:04:59,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:04:59,527 INFO L124 PetriNetUnfolderBase]: 296/619 cut-off events. [2024-06-27 19:04:59,528 INFO L125 PetriNetUnfolderBase]: For 116/116 co-relation queries the response was YES. [2024-06-27 19:04:59,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 619 events. 296/619 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3218 event pairs, 117 based on Foata normal form. 4/590 useless extension candidates. Maximal degree in co-relation 1263. Up to 470 conditions per place. [2024-06-27 19:04:59,531 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 35 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2024-06-27 19:04:59,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 218 flow [2024-06-27 19:04:59,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:04:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:04:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2024-06-27 19:04:59,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6357142857142857 [2024-06-27 19:04:59,535 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 88 flow. Second operand 4 states and 89 transitions. [2024-06-27 19:04:59,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 218 flow [2024-06-27 19:04:59,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:04:59,537 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 129 flow [2024-06-27 19:04:59,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-06-27 19:04:59,539 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2024-06-27 19:04:59,539 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 129 flow [2024-06-27 19:04:59,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:04:59,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:04:59,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:04:59,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:04:59,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:04:59,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:04:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1417959006, now seen corresponding path program 1 times [2024-06-27 19:04:59,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:04:59,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538775264] [2024-06-27 19:04:59,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:04:59,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:04:59,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:00,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:00,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538775264] [2024-06-27 19:05:00,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538775264] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:00,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:00,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:05:00,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441093083] [2024-06-27 19:05:00,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:00,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:05:00,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:00,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:05:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:05:00,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-27 19:05:00,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 129 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 19:05:00,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:00,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-27 19:05:00,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:00,189 INFO L124 PetriNetUnfolderBase]: 355/727 cut-off events. [2024-06-27 19:05:00,189 INFO L125 PetriNetUnfolderBase]: For 280/280 co-relation queries the response was YES. [2024-06-27 19:05:00,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1715 conditions, 727 events. 355/727 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3797 event pairs, 135 based on Foata normal form. 2/692 useless extension candidates. Maximal degree in co-relation 1700. Up to 568 conditions per place. [2024-06-27 19:05:00,193 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 46 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2024-06-27 19:05:00,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 311 flow [2024-06-27 19:05:00,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:05:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:05:00,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2024-06-27 19:05:00,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5942857142857143 [2024-06-27 19:05:00,196 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 129 flow. Second operand 5 states and 104 transitions. [2024-06-27 19:05:00,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 311 flow [2024-06-27 19:05:00,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 302 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 19:05:00,201 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 186 flow [2024-06-27 19:05:00,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2024-06-27 19:05:00,202 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2024-06-27 19:05:00,202 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 186 flow [2024-06-27 19:05:00,203 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 19:05:00,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:00,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:00,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:05:00,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:00,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:00,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1782812486, now seen corresponding path program 1 times [2024-06-27 19:05:00,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:00,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525073887] [2024-06-27 19:05:00,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:00,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:00,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:00,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:00,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525073887] [2024-06-27 19:05:00,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525073887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:00,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:00,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:05:00,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574810810] [2024-06-27 19:05:00,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:00,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:05:00,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:00,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:05:00,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:05:00,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-27 19:05:00,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 19:05:00,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:00,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-27 19:05:00,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:01,143 INFO L124 PetriNetUnfolderBase]: 352/746 cut-off events. [2024-06-27 19:05:01,143 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-06-27 19:05:01,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 746 events. 352/746 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3964 event pairs, 144 based on Foata normal form. 2/712 useless extension candidates. Maximal degree in co-relation 1848. Up to 538 conditions per place. [2024-06-27 19:05:01,148 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 55 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2024-06-27 19:05:01,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 426 flow [2024-06-27 19:05:01,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:01,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:01,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 125 transitions. [2024-06-27 19:05:01,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-06-27 19:05:01,150 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 186 flow. Second operand 6 states and 125 transitions. [2024-06-27 19:05:01,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 426 flow [2024-06-27 19:05:01,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 426 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-06-27 19:05:01,154 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 283 flow [2024-06-27 19:05:01,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-06-27 19:05:01,158 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 18 predicate places. [2024-06-27 19:05:01,159 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 283 flow [2024-06-27 19:05:01,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 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 19:05:01,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:01,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:01,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:05:01,163 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:01,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:01,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1153927743, now seen corresponding path program 1 times [2024-06-27 19:05:01,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:01,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712150974] [2024-06-27 19:05:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:01,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:01,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:01,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712150974] [2024-06-27 19:05:01,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712150974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:01,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:01,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:05:01,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645583698] [2024-06-27 19:05:01,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:01,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:05:01,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:01,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:05:01,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:05:01,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2024-06-27 19:05:01,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 283 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 19:05:01,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:01,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2024-06-27 19:05:01,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:02,079 INFO L124 PetriNetUnfolderBase]: 348/730 cut-off events. [2024-06-27 19:05:02,079 INFO L125 PetriNetUnfolderBase]: For 871/871 co-relation queries the response was YES. [2024-06-27 19:05:02,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 730 events. 348/730 cut-off events. For 871/871 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3816 event pairs, 101 based on Foata normal form. 4/700 useless extension candidates. Maximal degree in co-relation 2064. Up to 500 conditions per place. [2024-06-27 19:05:02,083 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 58 selfloop transitions, 16 changer transitions 0/83 dead transitions. [2024-06-27 19:05:02,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 501 flow [2024-06-27 19:05:02,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-27 19:05:02,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-06-27 19:05:02,084 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 283 flow. Second operand 7 states and 140 transitions. [2024-06-27 19:05:02,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 501 flow [2024-06-27 19:05:02,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 497 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 19:05:02,087 INFO L231 Difference]: Finished difference. Result has 63 places, 51 transitions, 305 flow [2024-06-27 19:05:02,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=305, PETRI_PLACES=63, PETRI_TRANSITIONS=51} [2024-06-27 19:05:02,088 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 24 predicate places. [2024-06-27 19:05:02,088 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 51 transitions, 305 flow [2024-06-27 19:05:02,088 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 19:05:02,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:02,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:02,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:05:02,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:02,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1525064298, now seen corresponding path program 1 times [2024-06-27 19:05:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779160513] [2024-06-27 19:05:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:02,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:02,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779160513] [2024-06-27 19:05:02,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779160513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:02,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:02,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:02,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616700365] [2024-06-27 19:05:02,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:02,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:02,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:02,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:02,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:02,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:02,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 51 transitions, 305 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 19:05:02,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:02,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:02,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:02,907 INFO L124 PetriNetUnfolderBase]: 474/914 cut-off events. [2024-06-27 19:05:02,907 INFO L125 PetriNetUnfolderBase]: For 1238/1238 co-relation queries the response was YES. [2024-06-27 19:05:02,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2788 conditions, 914 events. 474/914 cut-off events. For 1238/1238 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4714 event pairs, 112 based on Foata normal form. 3/881 useless extension candidates. Maximal degree in co-relation 2759. Up to 621 conditions per place. [2024-06-27 19:05:02,913 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 66 selfloop transitions, 16 changer transitions 0/89 dead transitions. [2024-06-27 19:05:02,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 589 flow [2024-06-27 19:05:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:02,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:02,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 19:05:02,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5387755102040817 [2024-06-27 19:05:02,914 INFO L175 Difference]: Start difference. First operand has 63 places, 51 transitions, 305 flow. Second operand 7 states and 132 transitions. [2024-06-27 19:05:02,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 589 flow [2024-06-27 19:05:02,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 89 transitions, 548 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:02,918 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 329 flow [2024-06-27 19:05:02,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-06-27 19:05:02,918 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 25 predicate places. [2024-06-27 19:05:02,919 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 329 flow [2024-06-27 19:05:02,919 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 19:05:02,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:02,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:02,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:05:02,919 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:02,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:02,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1524944328, now seen corresponding path program 2 times [2024-06-27 19:05:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277598277] [2024-06-27 19:05:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:02,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:03,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:03,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:03,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277598277] [2024-06-27 19:05:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277598277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:03,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:03,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:03,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519090588] [2024-06-27 19:05:03,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:03,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:03,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:03,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:03,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:03,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:03,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 329 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 19:05:03,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:03,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:03,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:03,816 INFO L124 PetriNetUnfolderBase]: 540/1031 cut-off events. [2024-06-27 19:05:03,817 INFO L125 PetriNetUnfolderBase]: For 1823/1823 co-relation queries the response was YES. [2024-06-27 19:05:03,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3278 conditions, 1031 events. 540/1031 cut-off events. For 1823/1823 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5427 event pairs, 117 based on Foata normal form. 3/993 useless extension candidates. Maximal degree in co-relation 3248. Up to 751 conditions per place. [2024-06-27 19:05:03,823 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 67 selfloop transitions, 15 changer transitions 0/89 dead transitions. [2024-06-27 19:05:03,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 599 flow [2024-06-27 19:05:03,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:05:03,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:05:03,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 19:05:03,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5183673469387755 [2024-06-27 19:05:03,824 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 329 flow. Second operand 7 states and 127 transitions. [2024-06-27 19:05:03,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 599 flow [2024-06-27 19:05:03,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 576 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:03,829 INFO L231 Difference]: Finished difference. Result has 68 places, 59 transitions, 375 flow [2024-06-27 19:05:03,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=68, PETRI_TRANSITIONS=59} [2024-06-27 19:05:03,830 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 29 predicate places. [2024-06-27 19:05:03,830 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 59 transitions, 375 flow [2024-06-27 19:05:03,831 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 19:05:03,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:03,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:03,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:05:03,831 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:03,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash 560873036, now seen corresponding path program 1 times [2024-06-27 19:05:03,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:03,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925404857] [2024-06-27 19:05:03,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:03,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925404857] [2024-06-27 19:05:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925404857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:04,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:04,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:04,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508119244] [2024-06-27 19:05:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:04,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:04,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:04,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:04,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:04,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 59 transitions, 375 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 19:05:04,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:04,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:04,700 INFO L124 PetriNetUnfolderBase]: 542/1036 cut-off events. [2024-06-27 19:05:04,701 INFO L125 PetriNetUnfolderBase]: For 2001/2001 co-relation queries the response was YES. [2024-06-27 19:05:04,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3407 conditions, 1036 events. 542/1036 cut-off events. For 2001/2001 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5589 event pairs, 101 based on Foata normal form. 2/996 useless extension candidates. Maximal degree in co-relation 3375. Up to 762 conditions per place. [2024-06-27 19:05:04,707 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 58 selfloop transitions, 16 changer transitions 0/81 dead transitions. [2024-06-27 19:05:04,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 81 transitions, 595 flow [2024-06-27 19:05:04,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:05:04,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:05:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-27 19:05:04,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314285714285715 [2024-06-27 19:05:04,708 INFO L175 Difference]: Start difference. First operand has 68 places, 59 transitions, 375 flow. Second operand 5 states and 93 transitions. [2024-06-27 19:05:04,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 81 transitions, 595 flow [2024-06-27 19:05:04,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 81 transitions, 560 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:04,714 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 432 flow [2024-06-27 19:05:04,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-06-27 19:05:04,715 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 31 predicate places. [2024-06-27 19:05:04,715 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 432 flow [2024-06-27 19:05:04,715 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 19:05:04,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:04,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:04,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:05:04,716 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:04,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:04,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1615335832, now seen corresponding path program 3 times [2024-06-27 19:05:04,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:04,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792380483] [2024-06-27 19:05:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:04,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:05,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:05,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:05,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792380483] [2024-06-27 19:05:05,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792380483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:05,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:05,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:05:05,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879987780] [2024-06-27 19:05:05,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:05,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:05:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:05,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:05:05,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:05:05,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:05,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 432 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 19:05:05,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:05,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:05,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:05,485 INFO L124 PetriNetUnfolderBase]: 536/1026 cut-off events. [2024-06-27 19:05:05,485 INFO L125 PetriNetUnfolderBase]: For 2341/2341 co-relation queries the response was YES. [2024-06-27 19:05:05,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3536 conditions, 1026 events. 536/1026 cut-off events. For 2341/2341 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5532 event pairs, 126 based on Foata normal form. 3/988 useless extension candidates. Maximal degree in co-relation 3502. Up to 762 conditions per place. [2024-06-27 19:05:05,490 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 68 selfloop transitions, 15 changer transitions 0/90 dead transitions. [2024-06-27 19:05:05,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 668 flow [2024-06-27 19:05:05,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:05,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:05,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-27 19:05:05,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380952380952381 [2024-06-27 19:05:05,492 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 432 flow. Second operand 6 states and 113 transitions. [2024-06-27 19:05:05,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 668 flow [2024-06-27 19:05:05,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 648 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:05,497 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 450 flow [2024-06-27 19:05:05,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=450, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-27 19:05:05,498 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2024-06-27 19:05:05,498 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 450 flow [2024-06-27 19:05:05,498 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 19:05:05,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:05,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:05,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:05:05,499 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:05,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:05,499 INFO L85 PathProgramCache]: Analyzing trace with hash 560882925, now seen corresponding path program 1 times [2024-06-27 19:05:05,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:05,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670811310] [2024-06-27 19:05:05,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:05,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:06,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:06,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:06,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670811310] [2024-06-27 19:05:06,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670811310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:06,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:06,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:06,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003424511] [2024-06-27 19:05:06,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:06,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:06,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:06,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:06,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:06,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:06,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 450 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 19:05:06,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:06,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:06,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:06,723 INFO L124 PetriNetUnfolderBase]: 533/1044 cut-off events. [2024-06-27 19:05:06,723 INFO L125 PetriNetUnfolderBase]: For 2964/2964 co-relation queries the response was YES. [2024-06-27 19:05:06,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3587 conditions, 1044 events. 533/1044 cut-off events. For 2964/2964 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5685 event pairs, 164 based on Foata normal form. 2/1005 useless extension candidates. Maximal degree in co-relation 3551. Up to 815 conditions per place. [2024-06-27 19:05:06,729 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 62 selfloop transitions, 10 changer transitions 0/79 dead transitions. [2024-06-27 19:05:06,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 632 flow [2024-06-27 19:05:06,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:05:06,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:05:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-27 19:05:06,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49714285714285716 [2024-06-27 19:05:06,730 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 450 flow. Second operand 5 states and 87 transitions. [2024-06-27 19:05:06,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 632 flow [2024-06-27 19:05:06,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 79 transitions, 595 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:06,735 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 438 flow [2024-06-27 19:05:06,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2024-06-27 19:05:06,736 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 35 predicate places. [2024-06-27 19:05:06,736 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 438 flow [2024-06-27 19:05:06,736 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 19:05:06,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:06,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:06,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:05:06,737 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:06,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:06,737 INFO L85 PathProgramCache]: Analyzing trace with hash -28780612, now seen corresponding path program 1 times [2024-06-27 19:05:06,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:06,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899140887] [2024-06-27 19:05:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:06,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899140887] [2024-06-27 19:05:07,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899140887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:07,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:07,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:07,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243645435] [2024-06-27 19:05:07,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:07,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:07,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:07,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:07,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:07,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 438 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 19:05:07,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:07,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:07,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:07,921 INFO L124 PetriNetUnfolderBase]: 544/953 cut-off events. [2024-06-27 19:05:07,921 INFO L125 PetriNetUnfolderBase]: For 2786/2786 co-relation queries the response was YES. [2024-06-27 19:05:07,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 953 events. 544/953 cut-off events. For 2786/2786 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4735 event pairs, 90 based on Foata normal form. 1/941 useless extension candidates. Maximal degree in co-relation 3432. Up to 719 conditions per place. [2024-06-27 19:05:07,926 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 80 selfloop transitions, 29 changer transitions 0/116 dead transitions. [2024-06-27 19:05:07,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 116 transitions, 867 flow [2024-06-27 19:05:07,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:07,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 19:05:07,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-06-27 19:05:07,928 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 438 flow. Second operand 9 states and 159 transitions. [2024-06-27 19:05:07,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 116 transitions, 867 flow [2024-06-27 19:05:07,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 116 transitions, 846 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:07,933 INFO L231 Difference]: Finished difference. Result has 83 places, 79 transitions, 620 flow [2024-06-27 19:05:07,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=620, PETRI_PLACES=83, PETRI_TRANSITIONS=79} [2024-06-27 19:05:07,934 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 44 predicate places. [2024-06-27 19:05:07,934 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 79 transitions, 620 flow [2024-06-27 19:05:07,934 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 19:05:07,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:07,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:07,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:05:07,935 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:07,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash 803341788, now seen corresponding path program 2 times [2024-06-27 19:05:07,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:07,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129672869] [2024-06-27 19:05:07,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:07,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:08,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:08,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129672869] [2024-06-27 19:05:08,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129672869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:08,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:08,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:08,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838691784] [2024-06-27 19:05:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:08,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:08,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:08,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 79 transitions, 620 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 19:05:08,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:08,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:08,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:08,921 INFO L124 PetriNetUnfolderBase]: 558/975 cut-off events. [2024-06-27 19:05:08,921 INFO L125 PetriNetUnfolderBase]: For 3573/3573 co-relation queries the response was YES. [2024-06-27 19:05:08,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3943 conditions, 975 events. 558/975 cut-off events. For 3573/3573 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4844 event pairs, 90 based on Foata normal form. 1/963 useless extension candidates. Maximal degree in co-relation 3902. Up to 783 conditions per place. [2024-06-27 19:05:08,927 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 82 selfloop transitions, 27 changer transitions 0/116 dead transitions. [2024-06-27 19:05:08,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 116 transitions, 956 flow [2024-06-27 19:05:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:08,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 19:05:08,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-06-27 19:05:08,929 INFO L175 Difference]: Start difference. First operand has 83 places, 79 transitions, 620 flow. Second operand 8 states and 142 transitions. [2024-06-27 19:05:08,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 116 transitions, 956 flow [2024-06-27 19:05:08,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 116 transitions, 932 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:08,937 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 690 flow [2024-06-27 19:05:08,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=690, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2024-06-27 19:05:08,937 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 50 predicate places. [2024-06-27 19:05:08,937 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 690 flow [2024-06-27 19:05:08,938 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 19:05:08,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:08,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:08,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:05:08,938 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:08,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:08,938 INFO L85 PathProgramCache]: Analyzing trace with hash 807060858, now seen corresponding path program 3 times [2024-06-27 19:05:08,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:08,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333552194] [2024-06-27 19:05:08,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:08,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:09,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:09,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:09,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333552194] [2024-06-27 19:05:09,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333552194] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:09,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:09,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:09,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297757534] [2024-06-27 19:05:09,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:09,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:09,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:09,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:09,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:09,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:09,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 690 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 19:05:09,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:09,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:09,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:10,135 INFO L124 PetriNetUnfolderBase]: 602/1106 cut-off events. [2024-06-27 19:05:10,135 INFO L125 PetriNetUnfolderBase]: For 4177/4177 co-relation queries the response was YES. [2024-06-27 19:05:10,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4388 conditions, 1106 events. 602/1106 cut-off events. For 4177/4177 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 5905 event pairs, 97 based on Foata normal form. 3/1074 useless extension candidates. Maximal degree in co-relation 4345. Up to 782 conditions per place. [2024-06-27 19:05:10,142 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 95 selfloop transitions, 26 changer transitions 0/128 dead transitions. [2024-06-27 19:05:10,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 1113 flow [2024-06-27 19:05:10,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:10,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 19:05:10,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2024-06-27 19:05:10,143 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 690 flow. Second operand 8 states and 146 transitions. [2024-06-27 19:05:10,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 1113 flow [2024-06-27 19:05:10,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 128 transitions, 1055 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:10,154 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 802 flow [2024-06-27 19:05:10,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=802, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2024-06-27 19:05:10,155 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 55 predicate places. [2024-06-27 19:05:10,155 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 802 flow [2024-06-27 19:05:10,155 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 19:05:10,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:10,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:10,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:05:10,156 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:10,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:10,156 INFO L85 PathProgramCache]: Analyzing trace with hash 198944956, now seen corresponding path program 4 times [2024-06-27 19:05:10,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:10,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110527745] [2024-06-27 19:05:10,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:10,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:10,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:10,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:10,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110527745] [2024-06-27 19:05:10,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110527745] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:10,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:10,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778253297] [2024-06-27 19:05:10,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:10,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:10,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:10,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:10,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 802 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 19:05:10,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:10,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:10,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:11,309 INFO L124 PetriNetUnfolderBase]: 609/1055 cut-off events. [2024-06-27 19:05:11,309 INFO L125 PetriNetUnfolderBase]: For 4694/4694 co-relation queries the response was YES. [2024-06-27 19:05:11,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4700 conditions, 1055 events. 609/1055 cut-off events. For 4694/4694 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5300 event pairs, 67 based on Foata normal form. 1/1043 useless extension candidates. Maximal degree in co-relation 4654. Up to 882 conditions per place. [2024-06-27 19:05:11,317 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 94 selfloop transitions, 28 changer transitions 0/129 dead transitions. [2024-06-27 19:05:11,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 129 transitions, 1185 flow [2024-06-27 19:05:11,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:11,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:11,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 19:05:11,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-06-27 19:05:11,319 INFO L175 Difference]: Start difference. First operand has 94 places, 92 transitions, 802 flow. Second operand 8 states and 142 transitions. [2024-06-27 19:05:11,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 129 transitions, 1185 flow [2024-06-27 19:05:11,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 129 transitions, 1141 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:11,330 INFO L231 Difference]: Finished difference. Result has 100 places, 98 transitions, 915 flow [2024-06-27 19:05:11,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=915, PETRI_PLACES=100, PETRI_TRANSITIONS=98} [2024-06-27 19:05:11,331 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 61 predicate places. [2024-06-27 19:05:11,331 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 98 transitions, 915 flow [2024-06-27 19:05:11,332 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 19:05:11,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:11,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:11,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:05:11,332 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:11,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:11,333 INFO L85 PathProgramCache]: Analyzing trace with hash 207196071, now seen corresponding path program 1 times [2024-06-27 19:05:11,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:11,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451252188] [2024-06-27 19:05:11,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:11,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:11,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:11,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451252188] [2024-06-27 19:05:11,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451252188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:11,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:11,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:11,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324392198] [2024-06-27 19:05:11,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:11,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:11,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:12,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:12,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 98 transitions, 915 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 19:05:12,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:12,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:12,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:12,382 INFO L124 PetriNetUnfolderBase]: 611/1131 cut-off events. [2024-06-27 19:05:12,383 INFO L125 PetriNetUnfolderBase]: For 5354/5354 co-relation queries the response was YES. [2024-06-27 19:05:12,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4851 conditions, 1131 events. 611/1131 cut-off events. For 5354/5354 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6087 event pairs, 121 based on Foata normal form. 2/1095 useless extension candidates. Maximal degree in co-relation 4801. Up to 803 conditions per place. [2024-06-27 19:05:12,396 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 92 selfloop transitions, 27 changer transitions 0/126 dead transitions. [2024-06-27 19:05:12,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 126 transitions, 1259 flow [2024-06-27 19:05:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 19:05:12,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-06-27 19:05:12,398 INFO L175 Difference]: Start difference. First operand has 100 places, 98 transitions, 915 flow. Second operand 6 states and 115 transitions. [2024-06-27 19:05:12,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 126 transitions, 1259 flow [2024-06-27 19:05:12,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 126 transitions, 1221 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:12,413 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 971 flow [2024-06-27 19:05:12,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=971, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-06-27 19:05:12,413 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2024-06-27 19:05:12,414 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 971 flow [2024-06-27 19:05:12,414 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 19:05:12,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:12,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:12,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:05:12,415 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:12,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1005704271, now seen corresponding path program 1 times [2024-06-27 19:05:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740142417] [2024-06-27 19:05:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:12,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:13,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:13,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740142417] [2024-06-27 19:05:13,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740142417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:13,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:13,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:13,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514165789] [2024-06-27 19:05:13,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:13,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:13,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:13,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:13,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 971 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 19:05:13,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:13,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:13,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:13,791 INFO L124 PetriNetUnfolderBase]: 773/1421 cut-off events. [2024-06-27 19:05:13,792 INFO L125 PetriNetUnfolderBase]: For 8394/8394 co-relation queries the response was YES. [2024-06-27 19:05:13,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6219 conditions, 1421 events. 773/1421 cut-off events. For 8394/8394 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8149 event pairs, 100 based on Foata normal form. 2/1387 useless extension candidates. Maximal degree in co-relation 6168. Up to 579 conditions per place. [2024-06-27 19:05:13,802 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 123 selfloop transitions, 40 changer transitions 0/170 dead transitions. [2024-06-27 19:05:13,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 170 transitions, 1665 flow [2024-06-27 19:05:13,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:13,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:13,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 175 transitions. [2024-06-27 19:05:13,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-06-27 19:05:13,804 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 971 flow. Second operand 9 states and 175 transitions. [2024-06-27 19:05:13,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 170 transitions, 1665 flow [2024-06-27 19:05:13,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 170 transitions, 1599 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:13,825 INFO L231 Difference]: Finished difference. Result has 108 places, 112 transitions, 1139 flow [2024-06-27 19:05:13,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1139, PETRI_PLACES=108, PETRI_TRANSITIONS=112} [2024-06-27 19:05:13,825 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2024-06-27 19:05:13,825 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 112 transitions, 1139 flow [2024-06-27 19:05:13,826 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 19:05:13,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:13,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:13,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:05:13,826 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:13,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1005701357, now seen corresponding path program 1 times [2024-06-27 19:05:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544002981] [2024-06-27 19:05:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:13,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:14,568 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 19:05:14,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:14,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544002981] [2024-06-27 19:05:14,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544002981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:14,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:14,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:14,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082237858] [2024-06-27 19:05:14,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:14,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:14,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:14,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:14,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:14,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:14,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 112 transitions, 1139 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 19:05:14,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:14,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:14,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:15,134 INFO L124 PetriNetUnfolderBase]: 795/1393 cut-off events. [2024-06-27 19:05:15,134 INFO L125 PetriNetUnfolderBase]: For 8858/8858 co-relation queries the response was YES. [2024-06-27 19:05:15,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6682 conditions, 1393 events. 795/1393 cut-off events. For 8858/8858 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7700 event pairs, 92 based on Foata normal form. 2/1379 useless extension candidates. Maximal degree in co-relation 6629. Up to 723 conditions per place. [2024-06-27 19:05:15,144 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 94 selfloop transitions, 69 changer transitions 0/170 dead transitions. [2024-06-27 19:05:15,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 170 transitions, 1737 flow [2024-06-27 19:05:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:05:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:05:15,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 188 transitions. [2024-06-27 19:05:15,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5371428571428571 [2024-06-27 19:05:15,145 INFO L175 Difference]: Start difference. First operand has 108 places, 112 transitions, 1139 flow. Second operand 10 states and 188 transitions. [2024-06-27 19:05:15,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 170 transitions, 1737 flow [2024-06-27 19:05:15,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 170 transitions, 1701 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:15,172 INFO L231 Difference]: Finished difference. Result has 116 places, 120 transitions, 1411 flow [2024-06-27 19:05:15,172 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1103, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1411, PETRI_PLACES=116, PETRI_TRANSITIONS=120} [2024-06-27 19:05:15,173 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2024-06-27 19:05:15,173 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 120 transitions, 1411 flow [2024-06-27 19:05:15,173 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 19:05:15,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:15,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:15,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:05:15,174 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:15,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:15,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1005701481, now seen corresponding path program 2 times [2024-06-27 19:05:15,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:15,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042356715] [2024-06-27 19:05:15,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:15,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:15,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:15,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:15,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042356715] [2024-06-27 19:05:15,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042356715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:15,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:15,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:15,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221951532] [2024-06-27 19:05:15,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:15,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:15,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:15,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:15,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:16,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:16,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 120 transitions, 1411 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 19:05:16,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:16,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:16,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:16,580 INFO L124 PetriNetUnfolderBase]: 917/1700 cut-off events. [2024-06-27 19:05:16,580 INFO L125 PetriNetUnfolderBase]: For 13625/13625 co-relation queries the response was YES. [2024-06-27 19:05:16,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8318 conditions, 1700 events. 917/1700 cut-off events. For 13625/13625 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10224 event pairs, 168 based on Foata normal form. 16/1671 useless extension candidates. Maximal degree in co-relation 8261. Up to 953 conditions per place. [2024-06-27 19:05:16,592 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 137 selfloop transitions, 42 changer transitions 0/186 dead transitions. [2024-06-27 19:05:16,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 186 transitions, 2090 flow [2024-06-27 19:05:16,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:05:16,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:05:16,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 194 transitions. [2024-06-27 19:05:16,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5542857142857143 [2024-06-27 19:05:16,594 INFO L175 Difference]: Start difference. First operand has 116 places, 120 transitions, 1411 flow. Second operand 10 states and 194 transitions. [2024-06-27 19:05:16,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 186 transitions, 2090 flow [2024-06-27 19:05:16,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 186 transitions, 2008 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:16,627 INFO L231 Difference]: Finished difference. Result has 124 places, 124 transitions, 1509 flow [2024-06-27 19:05:16,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1509, PETRI_PLACES=124, PETRI_TRANSITIONS=124} [2024-06-27 19:05:16,627 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 85 predicate places. [2024-06-27 19:05:16,628 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 124 transitions, 1509 flow [2024-06-27 19:05:16,628 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 19:05:16,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:16,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:16,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:05:16,628 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:16,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:16,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1002904847, now seen corresponding path program 2 times [2024-06-27 19:05:16,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:16,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224840018] [2024-06-27 19:05:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:16,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:17,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:17,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:17,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224840018] [2024-06-27 19:05:17,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224840018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:17,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:17,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:17,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132273335] [2024-06-27 19:05:17,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:17,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:17,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:17,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:17,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:17,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:17,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 124 transitions, 1509 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 19:05:17,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:17,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:17,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:18,076 INFO L124 PetriNetUnfolderBase]: 939/1749 cut-off events. [2024-06-27 19:05:18,077 INFO L125 PetriNetUnfolderBase]: For 13831/13831 co-relation queries the response was YES. [2024-06-27 19:05:18,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8750 conditions, 1749 events. 939/1749 cut-off events. For 13831/13831 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 10638 event pairs, 203 based on Foata normal form. 2/1701 useless extension candidates. Maximal degree in co-relation 8690. Up to 1282 conditions per place. [2024-06-27 19:05:18,090 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 139 selfloop transitions, 32 changer transitions 0/178 dead transitions. [2024-06-27 19:05:18,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 178 transitions, 2056 flow [2024-06-27 19:05:18,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:05:18,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:05:18,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 19:05:18,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2024-06-27 19:05:18,092 INFO L175 Difference]: Start difference. First operand has 124 places, 124 transitions, 1509 flow. Second operand 10 states and 181 transitions. [2024-06-27 19:05:18,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 178 transitions, 2056 flow [2024-06-27 19:05:18,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 178 transitions, 1966 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 19:05:18,128 INFO L231 Difference]: Finished difference. Result has 128 places, 127 transitions, 1532 flow [2024-06-27 19:05:18,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1532, PETRI_PLACES=128, PETRI_TRANSITIONS=127} [2024-06-27 19:05:18,129 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 89 predicate places. [2024-06-27 19:05:18,129 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 127 transitions, 1532 flow [2024-06-27 19:05:18,129 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 19:05:18,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:18,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:05:18,129 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:18,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -887613801, now seen corresponding path program 3 times [2024-06-27 19:05:18,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:18,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379473631] [2024-06-27 19:05:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:18,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:18,890 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 19:05:18,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:18,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379473631] [2024-06-27 19:05:18,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379473631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:18,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:18,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:18,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865363711] [2024-06-27 19:05:18,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:18,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:18,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:18,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:18,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:18,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:18,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 127 transitions, 1532 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 19:05:18,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:18,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:18,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:19,505 INFO L124 PetriNetUnfolderBase]: 959/1669 cut-off events. [2024-06-27 19:05:19,505 INFO L125 PetriNetUnfolderBase]: For 13650/13650 co-relation queries the response was YES. [2024-06-27 19:05:19,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8779 conditions, 1669 events. 959/1669 cut-off events. For 13650/13650 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9626 event pairs, 153 based on Foata normal form. 2/1657 useless extension candidates. Maximal degree in co-relation 8717. Up to 1492 conditions per place. [2024-06-27 19:05:19,516 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 131 selfloop transitions, 27 changer transitions 0/165 dead transitions. [2024-06-27 19:05:19,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 165 transitions, 1963 flow [2024-06-27 19:05:19,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:19,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 19:05:19,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-06-27 19:05:19,526 INFO L175 Difference]: Start difference. First operand has 128 places, 127 transitions, 1532 flow. Second operand 9 states and 154 transitions. [2024-06-27 19:05:19,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 165 transitions, 1963 flow [2024-06-27 19:05:19,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 165 transitions, 1888 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:19,560 INFO L231 Difference]: Finished difference. Result has 131 places, 129 transitions, 1540 flow [2024-06-27 19:05:19,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1457, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1540, PETRI_PLACES=131, PETRI_TRANSITIONS=129} [2024-06-27 19:05:19,561 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 92 predicate places. [2024-06-27 19:05:19,561 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 129 transitions, 1540 flow [2024-06-27 19:05:19,561 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 19:05:19,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:19,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:19,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:05:19,562 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:19,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:19,562 INFO L85 PathProgramCache]: Analyzing trace with hash -887613677, now seen corresponding path program 3 times [2024-06-27 19:05:19,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:19,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342353293] [2024-06-27 19:05:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:19,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342353293] [2024-06-27 19:05:20,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342353293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:20,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:20,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:20,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188497829] [2024-06-27 19:05:20,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:20,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:20,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:20,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:20,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 129 transitions, 1540 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 19:05:20,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:20,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:20,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:21,117 INFO L124 PetriNetUnfolderBase]: 999/1733 cut-off events. [2024-06-27 19:05:21,117 INFO L125 PetriNetUnfolderBase]: For 13565/13565 co-relation queries the response was YES. [2024-06-27 19:05:21,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9055 conditions, 1733 events. 999/1733 cut-off events. For 13565/13565 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10020 event pairs, 115 based on Foata normal form. 2/1722 useless extension candidates. Maximal degree in co-relation 8992. Up to 1369 conditions per place. [2024-06-27 19:05:21,128 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 124 selfloop transitions, 50 changer transitions 0/181 dead transitions. [2024-06-27 19:05:21,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 181 transitions, 2123 flow [2024-06-27 19:05:21,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:05:21,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:05:21,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 19:05:21,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171428571428571 [2024-06-27 19:05:21,130 INFO L175 Difference]: Start difference. First operand has 131 places, 129 transitions, 1540 flow. Second operand 10 states and 181 transitions. [2024-06-27 19:05:21,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 181 transitions, 2123 flow [2024-06-27 19:05:21,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 181 transitions, 1987 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:05:21,169 INFO L231 Difference]: Finished difference. Result has 133 places, 137 transitions, 1639 flow [2024-06-27 19:05:21,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1404, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1639, PETRI_PLACES=133, PETRI_TRANSITIONS=137} [2024-06-27 19:05:21,170 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 94 predicate places. [2024-06-27 19:05:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 137 transitions, 1639 flow [2024-06-27 19:05:21,170 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 19:05:21,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:21,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:21,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:05:21,171 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:21,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:21,171 INFO L85 PathProgramCache]: Analyzing trace with hash -887429103, now seen corresponding path program 1 times [2024-06-27 19:05:21,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:21,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070568185] [2024-06-27 19:05:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:21,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:21,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070568185] [2024-06-27 19:05:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070568185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:21,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293228641] [2024-06-27 19:05:21,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:21,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:21,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:21,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:21,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:22,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:22,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 137 transitions, 1639 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:22,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:22,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:22,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:22,431 INFO L124 PetriNetUnfolderBase]: 1015/1902 cut-off events. [2024-06-27 19:05:22,431 INFO L125 PetriNetUnfolderBase]: For 15805/15805 co-relation queries the response was YES. [2024-06-27 19:05:22,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9346 conditions, 1902 events. 1015/1902 cut-off events. For 15805/15805 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 11982 event pairs, 257 based on Foata normal form. 2/1846 useless extension candidates. Maximal degree in co-relation 9283. Up to 1589 conditions per place. [2024-06-27 19:05:22,445 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 148 selfloop transitions, 17 changer transitions 0/172 dead transitions. [2024-06-27 19:05:22,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 172 transitions, 2079 flow [2024-06-27 19:05:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 19:05:22,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 19:05:22,446 INFO L175 Difference]: Start difference. First operand has 133 places, 137 transitions, 1639 flow. Second operand 8 states and 140 transitions. [2024-06-27 19:05:22,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 172 transitions, 2079 flow [2024-06-27 19:05:22,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 172 transitions, 1990 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:22,485 INFO L231 Difference]: Finished difference. Result has 138 places, 139 transitions, 1610 flow [2024-06-27 19:05:22,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1550, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1610, PETRI_PLACES=138, PETRI_TRANSITIONS=139} [2024-06-27 19:05:22,485 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 99 predicate places. [2024-06-27 19:05:22,486 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 139 transitions, 1610 flow [2024-06-27 19:05:22,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:22,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:22,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:22,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:05:22,486 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:22,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:22,487 INFO L85 PathProgramCache]: Analyzing trace with hash 2128119019, now seen corresponding path program 2 times [2024-06-27 19:05:22,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:22,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490951117] [2024-06-27 19:05:22,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:22,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:23,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490951117] [2024-06-27 19:05:23,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490951117] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:23,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:23,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713925838] [2024-06-27 19:05:23,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:23,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:23,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:23,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:23,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 139 transitions, 1610 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 19:05:23,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:23,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:23,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:23,835 INFO L124 PetriNetUnfolderBase]: 1031/1809 cut-off events. [2024-06-27 19:05:23,835 INFO L125 PetriNetUnfolderBase]: For 15261/15261 co-relation queries the response was YES. [2024-06-27 19:05:23,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9339 conditions, 1809 events. 1031/1809 cut-off events. For 15261/15261 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10726 event pairs, 152 based on Foata normal form. 2/1792 useless extension candidates. Maximal degree in co-relation 9273. Up to 1497 conditions per place. [2024-06-27 19:05:23,848 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 125 selfloop transitions, 31 changer transitions 0/163 dead transitions. [2024-06-27 19:05:23,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 163 transitions, 1994 flow [2024-06-27 19:05:23,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:23,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-06-27 19:05:23,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-06-27 19:05:23,861 INFO L175 Difference]: Start difference. First operand has 138 places, 139 transitions, 1610 flow. Second operand 6 states and 110 transitions. [2024-06-27 19:05:23,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 163 transitions, 1994 flow [2024-06-27 19:05:23,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 163 transitions, 1956 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:23,901 INFO L231 Difference]: Finished difference. Result has 139 places, 140 transitions, 1656 flow [2024-06-27 19:05:23,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1656, PETRI_PLACES=139, PETRI_TRANSITIONS=140} [2024-06-27 19:05:23,902 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2024-06-27 19:05:23,902 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 140 transitions, 1656 flow [2024-06-27 19:05:23,902 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 19:05:23,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:23,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:23,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:05:23,902 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:23,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:23,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1854755921, now seen corresponding path program 4 times [2024-06-27 19:05:23,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:23,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749248080] [2024-06-27 19:05:23,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:23,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:24,657 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 19:05:24,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:24,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749248080] [2024-06-27 19:05:24,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749248080] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:24,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:24,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:24,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906955532] [2024-06-27 19:05:24,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:24,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:24,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:24,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:24,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:24,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:24,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 140 transitions, 1656 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 19:05:24,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:24,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:24,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:25,237 INFO L124 PetriNetUnfolderBase]: 1075/1999 cut-off events. [2024-06-27 19:05:25,238 INFO L125 PetriNetUnfolderBase]: For 17678/17678 co-relation queries the response was YES. [2024-06-27 19:05:25,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9968 conditions, 1999 events. 1075/1999 cut-off events. For 17678/17678 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 12635 event pairs, 251 based on Foata normal form. 2/1942 useless extension candidates. Maximal degree in co-relation 9901. Up to 1634 conditions per place. [2024-06-27 19:05:25,254 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 150 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2024-06-27 19:05:25,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 178 transitions, 2163 flow [2024-06-27 19:05:25,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:25,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 19:05:25,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071428571428571 [2024-06-27 19:05:25,256 INFO L175 Difference]: Start difference. First operand has 139 places, 140 transitions, 1656 flow. Second operand 8 states and 142 transitions. [2024-06-27 19:05:25,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 178 transitions, 2163 flow [2024-06-27 19:05:25,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 178 transitions, 2099 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:25,342 INFO L231 Difference]: Finished difference. Result has 144 places, 146 transitions, 1730 flow [2024-06-27 19:05:25,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1730, PETRI_PLACES=144, PETRI_TRANSITIONS=146} [2024-06-27 19:05:25,357 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 105 predicate places. [2024-06-27 19:05:25,357 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 146 transitions, 1730 flow [2024-06-27 19:05:25,357 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 19:05:25,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:25,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:25,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:05:25,358 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:25,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:25,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1854578291, now seen corresponding path program 5 times [2024-06-27 19:05:25,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:25,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068596517] [2024-06-27 19:05:25,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:25,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:26,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:26,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:26,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068596517] [2024-06-27 19:05:26,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068596517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:26,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:26,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:26,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160369240] [2024-06-27 19:05:26,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:26,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:26,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:26,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:26,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:26,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:26,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 1730 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 19:05:26,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:26,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:26,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:26,954 INFO L124 PetriNetUnfolderBase]: 1109/1919 cut-off events. [2024-06-27 19:05:26,954 INFO L125 PetriNetUnfolderBase]: For 16979/16979 co-relation queries the response was YES. [2024-06-27 19:05:26,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 1919 events. 1109/1919 cut-off events. For 16979/16979 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11301 event pairs, 153 based on Foata normal form. 2/1906 useless extension candidates. Maximal degree in co-relation 10137. Up to 1441 conditions per place. [2024-06-27 19:05:26,984 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 132 selfloop transitions, 58 changer transitions 0/197 dead transitions. [2024-06-27 19:05:26,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 197 transitions, 2378 flow [2024-06-27 19:05:26,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:05:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:05:26,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 172 transitions. [2024-06-27 19:05:26,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546031746031746 [2024-06-27 19:05:26,997 INFO L175 Difference]: Start difference. First operand has 144 places, 146 transitions, 1730 flow. Second operand 9 states and 172 transitions. [2024-06-27 19:05:26,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 197 transitions, 2378 flow [2024-06-27 19:05:27,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 197 transitions, 2330 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:27,058 INFO L231 Difference]: Finished difference. Result has 151 places, 152 transitions, 1932 flow [2024-06-27 19:05:27,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1932, PETRI_PLACES=151, PETRI_TRANSITIONS=152} [2024-06-27 19:05:27,059 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 112 predicate places. [2024-06-27 19:05:27,059 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 152 transitions, 1932 flow [2024-06-27 19:05:27,059 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 19:05:27,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:27,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:27,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:05:27,059 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:27,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:27,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2128112075, now seen corresponding path program 6 times [2024-06-27 19:05:27,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:27,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002065232] [2024-06-27 19:05:27,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:27,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:27,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:27,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002065232] [2024-06-27 19:05:27,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002065232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:27,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:27,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:05:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502694705] [2024-06-27 19:05:27,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:27,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:05:27,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:05:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:05:27,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:27,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 152 transitions, 1932 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:27,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:27,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:27,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:28,576 INFO L124 PetriNetUnfolderBase]: 1129/2143 cut-off events. [2024-06-27 19:05:28,576 INFO L125 PetriNetUnfolderBase]: For 21483/21483 co-relation queries the response was YES. [2024-06-27 19:05:28,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10851 conditions, 2143 events. 1129/2143 cut-off events. For 21483/21483 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13934 event pairs, 592 based on Foata normal form. 2/2084 useless extension candidates. Maximal degree in co-relation 10780. Up to 1767 conditions per place. [2024-06-27 19:05:28,621 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 164 selfloop transitions, 31 changer transitions 0/202 dead transitions. [2024-06-27 19:05:28,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 202 transitions, 2683 flow [2024-06-27 19:05:28,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:05:28,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:05:28,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 19:05:28,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47714285714285715 [2024-06-27 19:05:28,623 INFO L175 Difference]: Start difference. First operand has 151 places, 152 transitions, 1932 flow. Second operand 10 states and 167 transitions. [2024-06-27 19:05:28,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 202 transitions, 2683 flow [2024-06-27 19:05:28,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 202 transitions, 2589 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:28,668 INFO L231 Difference]: Finished difference. Result has 161 places, 170 transitions, 2250 flow [2024-06-27 19:05:28,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1857, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2250, PETRI_PLACES=161, PETRI_TRANSITIONS=170} [2024-06-27 19:05:28,669 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 122 predicate places. [2024-06-27 19:05:28,669 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 170 transitions, 2250 flow [2024-06-27 19:05:28,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:28,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:28,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:28,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:05:28,670 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:28,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash 556037333, now seen corresponding path program 3 times [2024-06-27 19:05:28,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:28,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293700705] [2024-06-27 19:05:28,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:28,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:29,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:29,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293700705] [2024-06-27 19:05:29,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293700705] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:29,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:29,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402162515] [2024-06-27 19:05:29,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:29,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:29,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:29,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:29,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 170 transitions, 2250 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 19:05:29,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:29,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:29,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:29,929 INFO L124 PetriNetUnfolderBase]: 1130/2139 cut-off events. [2024-06-27 19:05:29,929 INFO L125 PetriNetUnfolderBase]: For 21477/21477 co-relation queries the response was YES. [2024-06-27 19:05:29,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11084 conditions, 2139 events. 1130/2139 cut-off events. For 21477/21477 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13850 event pairs, 613 based on Foata normal form. 2/2082 useless extension candidates. Maximal degree in co-relation 11007. Up to 1825 conditions per place. [2024-06-27 19:05:29,944 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 166 selfloop transitions, 15 changer transitions 0/188 dead transitions. [2024-06-27 19:05:29,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 188 transitions, 2676 flow [2024-06-27 19:05:29,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:05:29,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:05:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 102 transitions. [2024-06-27 19:05:29,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2024-06-27 19:05:29,945 INFO L175 Difference]: Start difference. First operand has 161 places, 170 transitions, 2250 flow. Second operand 6 states and 102 transitions. [2024-06-27 19:05:29,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 188 transitions, 2676 flow [2024-06-27 19:05:30,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 188 transitions, 2558 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:30,005 INFO L231 Difference]: Finished difference. Result has 164 places, 173 transitions, 2199 flow [2024-06-27 19:05:30,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2199, PETRI_PLACES=164, PETRI_TRANSITIONS=173} [2024-06-27 19:05:30,006 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 125 predicate places. [2024-06-27 19:05:30,006 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 173 transitions, 2199 flow [2024-06-27 19:05:30,006 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 19:05:30,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:30,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:30,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:05:30,007 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:30,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:30,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1854578167, now seen corresponding path program 4 times [2024-06-27 19:05:30,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:30,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892513995] [2024-06-27 19:05:30,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:30,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:30,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:30,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:30,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892513995] [2024-06-27 19:05:30,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892513995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:30,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:30,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:30,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346197550] [2024-06-27 19:05:30,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:30,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:30,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:30,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:30,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:30,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:30,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 173 transitions, 2199 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 19:05:30,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:30,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:30,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:31,194 INFO L124 PetriNetUnfolderBase]: 1131/1981 cut-off events. [2024-06-27 19:05:31,195 INFO L125 PetriNetUnfolderBase]: For 19240/19242 co-relation queries the response was YES. [2024-06-27 19:05:31,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10786 conditions, 1981 events. 1131/1981 cut-off events. For 19240/19242 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 11873 event pairs, 156 based on Foata normal form. 4/1965 useless extension candidates. Maximal degree in co-relation 10708. Up to 1708 conditions per place. [2024-06-27 19:05:31,209 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 166 selfloop transitions, 37 changer transitions 0/210 dead transitions. [2024-06-27 19:05:31,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 210 transitions, 2741 flow [2024-06-27 19:05:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:31,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:31,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 19:05:31,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2024-06-27 19:05:31,211 INFO L175 Difference]: Start difference. First operand has 164 places, 173 transitions, 2199 flow. Second operand 8 states and 146 transitions. [2024-06-27 19:05:31,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 210 transitions, 2741 flow [2024-06-27 19:05:31,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 210 transitions, 2700 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 19:05:31,280 INFO L231 Difference]: Finished difference. Result has 169 places, 174 transitions, 2254 flow [2024-06-27 19:05:31,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2254, PETRI_PLACES=169, PETRI_TRANSITIONS=174} [2024-06-27 19:05:31,281 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 130 predicate places. [2024-06-27 19:05:31,282 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 174 transitions, 2254 flow [2024-06-27 19:05:31,282 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 19:05:31,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:31,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:31,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:05:31,282 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:31,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:31,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1009889909, now seen corresponding path program 7 times [2024-06-27 19:05:31,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:31,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909174452] [2024-06-27 19:05:31,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:31,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:31,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:31,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:31,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909174452] [2024-06-27 19:05:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909174452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:31,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440573371] [2024-06-27 19:05:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:31,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:31,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:31,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:31,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:32,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:32,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 174 transitions, 2254 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 19:05:32,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:32,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:32,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:32,552 INFO L124 PetriNetUnfolderBase]: 1127/2101 cut-off events. [2024-06-27 19:05:32,552 INFO L125 PetriNetUnfolderBase]: For 20138/20140 co-relation queries the response was YES. [2024-06-27 19:05:32,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10944 conditions, 2101 events. 1127/2101 cut-off events. For 20138/20140 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13521 event pairs, 283 based on Foata normal form. 4/2043 useless extension candidates. Maximal degree in co-relation 10865. Up to 1722 conditions per place. [2024-06-27 19:05:32,566 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 179 selfloop transitions, 23 changer transitions 0/209 dead transitions. [2024-06-27 19:05:32,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 209 transitions, 2786 flow [2024-06-27 19:05:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:32,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 19:05:32,568 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.525 [2024-06-27 19:05:32,568 INFO L175 Difference]: Start difference. First operand has 169 places, 174 transitions, 2254 flow. Second operand 8 states and 147 transitions. [2024-06-27 19:05:32,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 209 transitions, 2786 flow [2024-06-27 19:05:32,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 209 transitions, 2668 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 19:05:32,640 INFO L231 Difference]: Finished difference. Result has 170 places, 174 transitions, 2187 flow [2024-06-27 19:05:32,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2187, PETRI_PLACES=170, PETRI_TRANSITIONS=174} [2024-06-27 19:05:32,649 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 131 predicate places. [2024-06-27 19:05:32,650 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 174 transitions, 2187 flow [2024-06-27 19:05:32,650 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 19:05:32,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:32,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:32,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:05:32,650 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:32,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:32,651 INFO L85 PathProgramCache]: Analyzing trace with hash 890242750, now seen corresponding path program 1 times [2024-06-27 19:05:32,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:32,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423951250] [2024-06-27 19:05:32,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:32,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:32,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:32,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423951250] [2024-06-27 19:05:32,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423951250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:32,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:32,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:05:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267205411] [2024-06-27 19:05:32,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:32,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:05:32,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:05:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:05:32,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2024-06-27 19:05:32,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 174 transitions, 2187 flow. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:32,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:32,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2024-06-27 19:05:32,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:33,217 INFO L124 PetriNetUnfolderBase]: 1524/2906 cut-off events. [2024-06-27 19:05:33,218 INFO L125 PetriNetUnfolderBase]: For 21068/21276 co-relation queries the response was YES. [2024-06-27 19:05:33,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13461 conditions, 2906 events. 1524/2906 cut-off events. For 21068/21276 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 20721 event pairs, 537 based on Foata normal form. 151/2886 useless extension candidates. Maximal degree in co-relation 13383. Up to 1471 conditions per place. [2024-06-27 19:05:33,237 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 123 selfloop transitions, 12 changer transitions 114/333 dead transitions. [2024-06-27 19:05:33,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 333 transitions, 4475 flow [2024-06-27 19:05:33,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:05:33,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:05:33,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 162 transitions. [2024-06-27 19:05:33,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5785714285714286 [2024-06-27 19:05:33,239 INFO L175 Difference]: Start difference. First operand has 170 places, 174 transitions, 2187 flow. Second operand 8 states and 162 transitions. [2024-06-27 19:05:33,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 333 transitions, 4475 flow [2024-06-27 19:05:33,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 333 transitions, 4409 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:05:33,310 INFO L231 Difference]: Finished difference. Result has 177 places, 174 transitions, 2183 flow [2024-06-27 19:05:33,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2138, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2183, PETRI_PLACES=177, PETRI_TRANSITIONS=174} [2024-06-27 19:05:33,310 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 138 predicate places. [2024-06-27 19:05:33,310 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 174 transitions, 2183 flow [2024-06-27 19:05:33,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:33,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:33,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:33,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:05:33,311 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:33,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -2036951744, now seen corresponding path program 1 times [2024-06-27 19:05:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:33,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528674580] [2024-06-27 19:05:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:33,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:33,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:33,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528674580] [2024-06-27 19:05:33,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528674580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:33,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:33,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:05:33,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814936465] [2024-06-27 19:05:33,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:33,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:05:33,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:33,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:05:33,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:05:34,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:34,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 174 transitions, 2183 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:34,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:34,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:34,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:34,915 INFO L124 PetriNetUnfolderBase]: 1499/3187 cut-off events. [2024-06-27 19:05:34,916 INFO L125 PetriNetUnfolderBase]: For 29641/29643 co-relation queries the response was YES. [2024-06-27 19:05:34,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14902 conditions, 3187 events. 1499/3187 cut-off events. For 29641/29643 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 24315 event pairs, 195 based on Foata normal form. 10/3189 useless extension candidates. Maximal degree in co-relation 14819. Up to 921 conditions per place. [2024-06-27 19:05:34,938 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 201 selfloop transitions, 104 changer transitions 0/312 dead transitions. [2024-06-27 19:05:34,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 312 transitions, 4077 flow [2024-06-27 19:05:34,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:05:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:05:34,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 216 transitions. [2024-06-27 19:05:34,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.561038961038961 [2024-06-27 19:05:34,939 INFO L175 Difference]: Start difference. First operand has 177 places, 174 transitions, 2183 flow. Second operand 11 states and 216 transitions. [2024-06-27 19:05:34,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 312 transitions, 4077 flow [2024-06-27 19:05:35,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 312 transitions, 4004 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:35,022 INFO L231 Difference]: Finished difference. Result has 184 places, 226 transitions, 3330 flow [2024-06-27 19:05:35,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3330, PETRI_PLACES=184, PETRI_TRANSITIONS=226} [2024-06-27 19:05:35,023 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 145 predicate places. [2024-06-27 19:05:35,023 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 226 transitions, 3330 flow [2024-06-27 19:05:35,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:35,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:35,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:35,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:05:35,023 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:35,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:35,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1911632360, now seen corresponding path program 2 times [2024-06-27 19:05:35,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:35,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591876891] [2024-06-27 19:05:35,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:35,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:35,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:35,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591876891] [2024-06-27 19:05:35,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591876891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:35,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:35,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:05:35,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136631382] [2024-06-27 19:05:35,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:35,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:05:35,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:35,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:05:35,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:05:35,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:35,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 226 transitions, 3330 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:35,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:35,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:35,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:37,169 INFO L124 PetriNetUnfolderBase]: 2566/5643 cut-off events. [2024-06-27 19:05:37,170 INFO L125 PetriNetUnfolderBase]: For 58725/58725 co-relation queries the response was YES. [2024-06-27 19:05:37,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27463 conditions, 5643 events. 2566/5643 cut-off events. For 58725/58725 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 49144 event pairs, 884 based on Foata normal form. 8/5363 useless extension candidates. Maximal degree in co-relation 27376. Up to 2530 conditions per place. [2024-06-27 19:05:37,207 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 283 selfloop transitions, 134 changer transitions 0/424 dead transitions. [2024-06-27 19:05:37,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 424 transitions, 6852 flow [2024-06-27 19:05:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:05:37,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:05:37,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 209 transitions. [2024-06-27 19:05:37,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-06-27 19:05:37,209 INFO L175 Difference]: Start difference. First operand has 184 places, 226 transitions, 3330 flow. Second operand 11 states and 209 transitions. [2024-06-27 19:05:37,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 424 transitions, 6852 flow [2024-06-27 19:05:37,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 424 transitions, 6596 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:37,399 INFO L231 Difference]: Finished difference. Result has 196 places, 338 transitions, 5684 flow [2024-06-27 19:05:37,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5684, PETRI_PLACES=196, PETRI_TRANSITIONS=338} [2024-06-27 19:05:37,401 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 157 predicate places. [2024-06-27 19:05:37,401 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 338 transitions, 5684 flow [2024-06-27 19:05:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:37,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:37,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:37,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:05:37,401 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:37,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:37,428 INFO L85 PathProgramCache]: Analyzing trace with hash 772474910, now seen corresponding path program 3 times [2024-06-27 19:05:37,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:37,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205913163] [2024-06-27 19:05:37,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:37,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:38,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:38,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205913163] [2024-06-27 19:05:38,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205913163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:38,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:38,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:05:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909272532] [2024-06-27 19:05:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:38,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:05:38,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:38,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:05:38,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:05:38,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:38,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 338 transitions, 5684 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:38,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:38,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:38,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:39,857 INFO L124 PetriNetUnfolderBase]: 3614/7822 cut-off events. [2024-06-27 19:05:39,857 INFO L125 PetriNetUnfolderBase]: For 76091/76091 co-relation queries the response was YES. [2024-06-27 19:05:39,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37550 conditions, 7822 events. 3614/7822 cut-off events. For 76091/76091 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 72165 event pairs, 1163 based on Foata normal form. 8/7480 useless extension candidates. Maximal degree in co-relation 37457. Up to 3906 conditions per place. [2024-06-27 19:05:39,911 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 306 selfloop transitions, 212 changer transitions 0/525 dead transitions. [2024-06-27 19:05:39,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 525 transitions, 9051 flow [2024-06-27 19:05:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:05:39,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:05:39,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 213 transitions. [2024-06-27 19:05:39,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532467532467532 [2024-06-27 19:05:39,913 INFO L175 Difference]: Start difference. First operand has 196 places, 338 transitions, 5684 flow. Second operand 11 states and 213 transitions. [2024-06-27 19:05:39,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 525 transitions, 9051 flow [2024-06-27 19:05:40,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 525 transitions, 9026 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-06-27 19:05:40,227 INFO L231 Difference]: Finished difference. Result has 210 places, 443 transitions, 8321 flow [2024-06-27 19:05:40,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5665, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8321, PETRI_PLACES=210, PETRI_TRANSITIONS=443} [2024-06-27 19:05:40,228 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 171 predicate places. [2024-06-27 19:05:40,228 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 443 transitions, 8321 flow [2024-06-27 19:05:40,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:40,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:40,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:40,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:05:40,229 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:40,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:40,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1155549542, now seen corresponding path program 4 times [2024-06-27 19:05:40,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:40,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942397228] [2024-06-27 19:05:40,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:40,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:40,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:40,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:40,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942397228] [2024-06-27 19:05:40,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942397228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:40,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:40,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:05:40,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849611413] [2024-06-27 19:05:40,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:40,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:05:40,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:40,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:05:40,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:05:41,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:41,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 443 transitions, 8321 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:41,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:41,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:41,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:43,422 INFO L124 PetriNetUnfolderBase]: 4711/10206 cut-off events. [2024-06-27 19:05:43,422 INFO L125 PetriNetUnfolderBase]: For 107216/107216 co-relation queries the response was YES. [2024-06-27 19:05:43,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49850 conditions, 10206 events. 4711/10206 cut-off events. For 107216/107216 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 99840 event pairs, 1496 based on Foata normal form. 8/9777 useless extension candidates. Maximal degree in co-relation 49750. Up to 5296 conditions per place. [2024-06-27 19:05:43,504 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 318 selfloop transitions, 303 changer transitions 0/628 dead transitions. [2024-06-27 19:05:43,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 628 transitions, 12053 flow [2024-06-27 19:05:43,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:05:43,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:05:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 215 transitions. [2024-06-27 19:05:43,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584415584415584 [2024-06-27 19:05:43,506 INFO L175 Difference]: Start difference. First operand has 210 places, 443 transitions, 8321 flow. Second operand 11 states and 215 transitions. [2024-06-27 19:05:43,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 628 transitions, 12053 flow [2024-06-27 19:05:44,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 628 transitions, 11926 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:44,042 INFO L231 Difference]: Finished difference. Result has 221 places, 545 transitions, 11126 flow [2024-06-27 19:05:44,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8194, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=11126, PETRI_PLACES=221, PETRI_TRANSITIONS=545} [2024-06-27 19:05:44,043 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 182 predicate places. [2024-06-27 19:05:44,043 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 545 transitions, 11126 flow [2024-06-27 19:05:44,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:44,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:44,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:44,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:05:44,043 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:44,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash -240748354, now seen corresponding path program 5 times [2024-06-27 19:05:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:44,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404742362] [2024-06-27 19:05:44,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:44,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:45,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:45,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:45,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404742362] [2024-06-27 19:05:45,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404742362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:45,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:45,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:05:45,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990127798] [2024-06-27 19:05:45,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:45,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:05:45,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:45,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:05:45,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:05:45,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:45,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 545 transitions, 11126 flow. Second operand has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:45,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:45,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:45,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:47,529 INFO L124 PetriNetUnfolderBase]: 5179/11307 cut-off events. [2024-06-27 19:05:47,529 INFO L125 PetriNetUnfolderBase]: For 131601/131601 co-relation queries the response was YES. [2024-06-27 19:05:47,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56600 conditions, 11307 events. 5179/11307 cut-off events. For 131601/131601 co-relation queries the response was YES. Maximal size of possible extension queue 852. Compared 113080 event pairs, 1983 based on Foata normal form. 20/10831 useless extension candidates. Maximal degree in co-relation 56495. Up to 6336 conditions per place. [2024-06-27 19:05:47,631 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 238 selfloop transitions, 415 changer transitions 0/660 dead transitions. [2024-06-27 19:05:47,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 660 transitions, 13884 flow [2024-06-27 19:05:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:05:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:05:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 195 transitions. [2024-06-27 19:05:47,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2024-06-27 19:05:47,633 INFO L175 Difference]: Start difference. First operand has 221 places, 545 transitions, 11126 flow. Second operand 10 states and 195 transitions. [2024-06-27 19:05:47,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 660 transitions, 13884 flow [2024-06-27 19:05:48,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 660 transitions, 13556 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:48,604 INFO L231 Difference]: Finished difference. Result has 229 places, 592 transitions, 13057 flow [2024-06-27 19:05:48,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=10841, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=13057, PETRI_PLACES=229, PETRI_TRANSITIONS=592} [2024-06-27 19:05:48,605 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 190 predicate places. [2024-06-27 19:05:48,605 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 592 transitions, 13057 flow [2024-06-27 19:05:48,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.4) internal successors, (104), 10 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:05:48,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:48,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:48,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:05:48,606 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:48,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:48,606 INFO L85 PathProgramCache]: Analyzing trace with hash -273820084, now seen corresponding path program 6 times [2024-06-27 19:05:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:48,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962419831] [2024-06-27 19:05:48,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:48,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:48,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:49,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:49,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962419831] [2024-06-27 19:05:49,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962419831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:49,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:49,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:05:49,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037998209] [2024-06-27 19:05:49,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:49,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:05:49,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:49,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:05:49,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:05:49,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:49,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 592 transitions, 13057 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:49,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:49,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:49,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:52,696 INFO L124 PetriNetUnfolderBase]: 5358/11938 cut-off events. [2024-06-27 19:05:52,697 INFO L125 PetriNetUnfolderBase]: For 136514/136514 co-relation queries the response was YES. [2024-06-27 19:05:52,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60095 conditions, 11938 events. 5358/11938 cut-off events. For 136514/136514 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 122475 event pairs, 1909 based on Foata normal form. 8/11350 useless extension candidates. Maximal degree in co-relation 59986. Up to 7312 conditions per place. [2024-06-27 19:05:52,781 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 347 selfloop transitions, 330 changer transitions 0/684 dead transitions. [2024-06-27 19:05:52,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 684 transitions, 15247 flow [2024-06-27 19:05:52,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:05:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:05:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 214 transitions. [2024-06-27 19:05:52,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5558441558441558 [2024-06-27 19:05:52,783 INFO L175 Difference]: Start difference. First operand has 229 places, 592 transitions, 13057 flow. Second operand 11 states and 214 transitions. [2024-06-27 19:05:52,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 684 transitions, 15247 flow [2024-06-27 19:05:53,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 684 transitions, 14621 flow, removed 115 selfloop flow, removed 4 redundant places. [2024-06-27 19:05:53,716 INFO L231 Difference]: Finished difference. Result has 238 places, 600 transitions, 13390 flow [2024-06-27 19:05:53,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=12433, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13390, PETRI_PLACES=238, PETRI_TRANSITIONS=600} [2024-06-27 19:05:53,717 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 199 predicate places. [2024-06-27 19:05:53,717 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 600 transitions, 13390 flow [2024-06-27 19:05:53,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:53,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:53,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:53,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:05:53,718 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:53,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:53,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1829650420, now seen corresponding path program 7 times [2024-06-27 19:05:53,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:53,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354337299] [2024-06-27 19:05:53,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:53,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:54,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:54,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354337299] [2024-06-27 19:05:54,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354337299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:54,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:54,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:05:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849737733] [2024-06-27 19:05:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:54,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:05:54,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:54,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:05:54,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:05:54,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:54,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 600 transitions, 13390 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:54,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:54,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:54,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:05:57,668 INFO L124 PetriNetUnfolderBase]: 5746/12987 cut-off events. [2024-06-27 19:05:57,669 INFO L125 PetriNetUnfolderBase]: For 153529/153529 co-relation queries the response was YES. [2024-06-27 19:05:57,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63671 conditions, 12987 events. 5746/12987 cut-off events. For 153529/153529 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 136213 event pairs, 2566 based on Foata normal form. 8/12327 useless extension candidates. Maximal degree in co-relation 63559. Up to 8222 conditions per place. [2024-06-27 19:05:57,776 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 409 selfloop transitions, 262 changer transitions 0/678 dead transitions. [2024-06-27 19:05:57,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 678 transitions, 15268 flow [2024-06-27 19:05:57,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:05:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:05:57,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 212 transitions. [2024-06-27 19:05:57,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5506493506493506 [2024-06-27 19:05:57,778 INFO L175 Difference]: Start difference. First operand has 238 places, 600 transitions, 13390 flow. Second operand 11 states and 212 transitions. [2024-06-27 19:05:57,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 678 transitions, 15268 flow [2024-06-27 19:05:58,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 678 transitions, 14663 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-27 19:05:58,462 INFO L231 Difference]: Finished difference. Result has 245 places, 603 transitions, 13532 flow [2024-06-27 19:05:58,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=12791, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13532, PETRI_PLACES=245, PETRI_TRANSITIONS=603} [2024-06-27 19:05:58,463 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 206 predicate places. [2024-06-27 19:05:58,463 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 603 transitions, 13532 flow [2024-06-27 19:05:58,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:58,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:05:58,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:05:58,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:05:58,463 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:05:58,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:05:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash -498804748, now seen corresponding path program 8 times [2024-06-27 19:05:58,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:05:58,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20991212] [2024-06-27 19:05:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:05:58,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:05:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:05:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:05:59,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:05:59,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20991212] [2024-06-27 19:05:59,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20991212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:05:59,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:05:59,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:05:59,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073534358] [2024-06-27 19:05:59,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:05:59,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:05:59,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:05:59,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:05:59,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:05:59,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:05:59,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 603 transitions, 13532 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:05:59,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:05:59,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:05:59,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:02,736 INFO L124 PetriNetUnfolderBase]: 5904/13018 cut-off events. [2024-06-27 19:06:02,736 INFO L125 PetriNetUnfolderBase]: For 148952/148952 co-relation queries the response was YES. [2024-06-27 19:06:02,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64329 conditions, 13018 events. 5904/13018 cut-off events. For 148952/148952 co-relation queries the response was YES. Maximal size of possible extension queue 1032. Compared 134922 event pairs, 2710 based on Foata normal form. 8/12442 useless extension candidates. Maximal degree in co-relation 64214. Up to 8638 conditions per place. [2024-06-27 19:06:02,847 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 497 selfloop transitions, 174 changer transitions 0/678 dead transitions. [2024-06-27 19:06:02,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 678 transitions, 15428 flow [2024-06-27 19:06:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:06:02,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:06:02,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 19:06:02,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-27 19:06:02,849 INFO L175 Difference]: Start difference. First operand has 245 places, 603 transitions, 13532 flow. Second operand 11 states and 210 transitions. [2024-06-27 19:06:02,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 678 transitions, 15428 flow [2024-06-27 19:06:03,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 678 transitions, 14928 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-06-27 19:06:03,798 INFO L231 Difference]: Finished difference. Result has 250 places, 608 transitions, 13551 flow [2024-06-27 19:06:03,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=13040, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=13551, PETRI_PLACES=250, PETRI_TRANSITIONS=608} [2024-06-27 19:06:03,799 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 211 predicate places. [2024-06-27 19:06:03,799 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 608 transitions, 13551 flow [2024-06-27 19:06:03,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:03,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:03,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:03,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:06:03,799 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:06:03,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:03,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1828425260, now seen corresponding path program 9 times [2024-06-27 19:06:03,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:03,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358221165] [2024-06-27 19:06:03,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:03,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:04,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:04,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358221165] [2024-06-27 19:06:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358221165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:04,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:04,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:06:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830559999] [2024-06-27 19:06:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:04,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:06:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:04,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:06:04,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:06:04,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:06:04,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 608 transitions, 13551 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:04,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:04,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:06:04,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:08,166 INFO L124 PetriNetUnfolderBase]: 6111/13888 cut-off events. [2024-06-27 19:06:08,167 INFO L125 PetriNetUnfolderBase]: For 155900/155900 co-relation queries the response was YES. [2024-06-27 19:06:08,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66827 conditions, 13888 events. 6111/13888 cut-off events. For 155900/155900 co-relation queries the response was YES. Maximal size of possible extension queue 1069. Compared 147821 event pairs, 2996 based on Foata normal form. 10/13188 useless extension candidates. Maximal degree in co-relation 66710. Up to 9267 conditions per place. [2024-06-27 19:06:08,293 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 422 selfloop transitions, 286 changer transitions 0/715 dead transitions. [2024-06-27 19:06:08,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 715 transitions, 16056 flow [2024-06-27 19:06:08,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:06:08,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:06:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 19:06:08,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402597402597402 [2024-06-27 19:06:08,294 INFO L175 Difference]: Start difference. First operand has 250 places, 608 transitions, 13551 flow. Second operand 11 states and 208 transitions. [2024-06-27 19:06:08,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 715 transitions, 16056 flow [2024-06-27 19:06:09,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 715 transitions, 15700 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 19:06:09,276 INFO L231 Difference]: Finished difference. Result has 259 places, 635 transitions, 14642 flow [2024-06-27 19:06:09,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=13216, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14642, PETRI_PLACES=259, PETRI_TRANSITIONS=635} [2024-06-27 19:06:09,277 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 220 predicate places. [2024-06-27 19:06:09,277 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 635 transitions, 14642 flow [2024-06-27 19:06:09,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:09,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:09,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:09,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:06:09,277 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:06:09,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:09,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1328119866, now seen corresponding path program 10 times [2024-06-27 19:06:09,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:09,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313934012] [2024-06-27 19:06:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:10,172 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 19:06:10,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:10,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313934012] [2024-06-27 19:06:10,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313934012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:10,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:10,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:06:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838855495] [2024-06-27 19:06:10,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:06:10,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:10,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:06:10,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:06:10,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:06:10,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 635 transitions, 14642 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:10,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:10,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:06:10,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:13,765 INFO L124 PetriNetUnfolderBase]: 6263/14156 cut-off events. [2024-06-27 19:06:13,765 INFO L125 PetriNetUnfolderBase]: For 165301/165301 co-relation queries the response was YES. [2024-06-27 19:06:13,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69207 conditions, 14156 events. 6263/14156 cut-off events. For 165301/165301 co-relation queries the response was YES. Maximal size of possible extension queue 1108. Compared 151233 event pairs, 3109 based on Foata normal form. 8/13463 useless extension candidates. Maximal degree in co-relation 69085. Up to 9298 conditions per place. [2024-06-27 19:06:13,892 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 476 selfloop transitions, 236 changer transitions 0/719 dead transitions. [2024-06-27 19:06:13,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 719 transitions, 16740 flow [2024-06-27 19:06:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:06:13,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:06:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 19:06:13,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402597402597402 [2024-06-27 19:06:13,893 INFO L175 Difference]: Start difference. First operand has 259 places, 635 transitions, 14642 flow. Second operand 11 states and 208 transitions. [2024-06-27 19:06:13,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 719 transitions, 16740 flow [2024-06-27 19:06:14,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 719 transitions, 16518 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:06:14,976 INFO L231 Difference]: Finished difference. Result has 268 places, 638 transitions, 14981 flow [2024-06-27 19:06:14,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=14420, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=233, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=14981, PETRI_PLACES=268, PETRI_TRANSITIONS=638} [2024-06-27 19:06:14,977 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 229 predicate places. [2024-06-27 19:06:14,978 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 638 transitions, 14981 flow [2024-06-27 19:06:14,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:14,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:14,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:14,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:06:14,978 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:06:14,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:14,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1824850340, now seen corresponding path program 11 times [2024-06-27 19:06:14,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:14,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164126910] [2024-06-27 19:06:14,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:14,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:14,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:15,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:15,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:15,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164126910] [2024-06-27 19:06:15,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164126910] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:15,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:15,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:06:15,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179757133] [2024-06-27 19:06:15,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:15,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:06:15,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:15,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:06:15,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:06:15,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:06:15,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 638 transitions, 14981 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:15,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:15,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:06:15,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:19,605 INFO L124 PetriNetUnfolderBase]: 6457/14575 cut-off events. [2024-06-27 19:06:19,605 INFO L125 PetriNetUnfolderBase]: For 179019/179019 co-relation queries the response was YES. [2024-06-27 19:06:19,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71027 conditions, 14575 events. 6457/14575 cut-off events. For 179019/179019 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 155905 event pairs, 3336 based on Foata normal form. 10/13877 useless extension candidates. Maximal degree in co-relation 70903. Up to 10246 conditions per place. [2024-06-27 19:06:19,988 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 504 selfloop transitions, 205 changer transitions 0/716 dead transitions. [2024-06-27 19:06:19,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 716 transitions, 16983 flow [2024-06-27 19:06:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:06:19,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:06:19,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 208 transitions. [2024-06-27 19:06:19,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402597402597402 [2024-06-27 19:06:19,990 INFO L175 Difference]: Start difference. First operand has 268 places, 638 transitions, 14981 flow. Second operand 11 states and 208 transitions. [2024-06-27 19:06:19,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 716 transitions, 16983 flow [2024-06-27 19:06:20,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 716 transitions, 16566 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:06:20,938 INFO L231 Difference]: Finished difference. Result has 274 places, 642 transitions, 15167 flow [2024-06-27 19:06:20,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=14564, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15167, PETRI_PLACES=274, PETRI_TRANSITIONS=642} [2024-06-27 19:06:20,942 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 235 predicate places. [2024-06-27 19:06:20,942 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 642 transitions, 15167 flow [2024-06-27 19:06:20,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:20,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:20,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:20,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:06:20,948 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:06:20,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:20,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1824854060, now seen corresponding path program 12 times [2024-06-27 19:06:20,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:20,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507013280] [2024-06-27 19:06:20,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:20,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:21,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:21,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:21,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507013280] [2024-06-27 19:06:21,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507013280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:21,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:21,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:06:21,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971740479] [2024-06-27 19:06:21,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:21,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:06:21,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:21,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:06:21,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:06:21,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:06:21,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 642 transitions, 15167 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:21,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:21,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:06:21,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:25,613 INFO L124 PetriNetUnfolderBase]: 6605/14867 cut-off events. [2024-06-27 19:06:25,613 INFO L125 PetriNetUnfolderBase]: For 182379/182379 co-relation queries the response was YES. [2024-06-27 19:06:25,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72291 conditions, 14867 events. 6605/14867 cut-off events. For 182379/182379 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 159547 event pairs, 3275 based on Foata normal form. 8/14163 useless extension candidates. Maximal degree in co-relation 72164. Up to 9554 conditions per place. [2024-06-27 19:06:25,762 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 509 selfloop transitions, 205 changer transitions 0/721 dead transitions. [2024-06-27 19:06:25,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 721 transitions, 17157 flow [2024-06-27 19:06:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:06:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:06:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 210 transitions. [2024-06-27 19:06:25,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-06-27 19:06:25,764 INFO L175 Difference]: Start difference. First operand has 274 places, 642 transitions, 15167 flow. Second operand 11 states and 210 transitions. [2024-06-27 19:06:25,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 721 transitions, 17157 flow [2024-06-27 19:06:26,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 721 transitions, 16875 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-06-27 19:06:26,908 INFO L231 Difference]: Finished difference. Result has 281 places, 644 transitions, 15379 flow [2024-06-27 19:06:26,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=14885, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=15379, PETRI_PLACES=281, PETRI_TRANSITIONS=644} [2024-06-27 19:06:26,909 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 242 predicate places. [2024-06-27 19:06:26,909 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 644 transitions, 15379 flow [2024-06-27 19:06:26,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:26,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:26,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:26,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:06:26,910 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:06:26,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:26,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1155523624, now seen corresponding path program 1 times [2024-06-27 19:06:26,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:26,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56130653] [2024-06-27 19:06:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:06:27,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:27,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56130653] [2024-06-27 19:06:27,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56130653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:27,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:27,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:06:27,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174157080] [2024-06-27 19:06:27,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:27,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:06:27,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:27,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:06:27,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:06:27,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:06:27,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 644 transitions, 15379 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:27,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:27,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:06:27,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:06:31,895 INFO L124 PetriNetUnfolderBase]: 6699/14801 cut-off events. [2024-06-27 19:06:31,896 INFO L125 PetriNetUnfolderBase]: For 190118/190118 co-relation queries the response was YES. [2024-06-27 19:06:31,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73800 conditions, 14801 events. 6699/14801 cut-off events. For 190118/190118 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 157394 event pairs, 4140 based on Foata normal form. 2/14156 useless extension candidates. Maximal degree in co-relation 73671. Up to 11807 conditions per place. [2024-06-27 19:06:32,040 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 657 selfloop transitions, 62 changer transitions 0/726 dead transitions. [2024-06-27 19:06:32,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 726 transitions, 17833 flow [2024-06-27 19:06:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:06:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:06:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-27 19:06:32,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976190476190476 [2024-06-27 19:06:32,042 INFO L175 Difference]: Start difference. First operand has 281 places, 644 transitions, 15379 flow. Second operand 12 states and 209 transitions. [2024-06-27 19:06:32,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 726 transitions, 17833 flow [2024-06-27 19:06:33,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 726 transitions, 17441 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 19:06:33,244 INFO L231 Difference]: Finished difference. Result has 289 places, 668 transitions, 15817 flow [2024-06-27 19:06:33,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=15027, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=15817, PETRI_PLACES=289, PETRI_TRANSITIONS=668} [2024-06-27 19:06:33,245 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 250 predicate places. [2024-06-27 19:06:33,245 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 668 transitions, 15817 flow [2024-06-27 19:06:33,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:33,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:06:33,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:06:33,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:06:33,248 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 19:06:33,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:06:33,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1813801162, now seen corresponding path program 2 times [2024-06-27 19:06:33,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:06:33,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311140192] [2024-06-27 19:06:33,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:06:33,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:06:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:06:34,192 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 19:06:34,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:06:34,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311140192] [2024-06-27 19:06:34,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311140192] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:06:34,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:06:34,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:06:34,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648831476] [2024-06-27 19:06:34,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:06:34,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:06:34,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:06:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:06:34,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:06:34,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 35 [2024-06-27 19:06:34,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 668 transitions, 15817 flow. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 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 19:06:34,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:06:34,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 35 [2024-06-27 19:06:34,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand