./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/protection/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 20:46:22,754 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:46:22,832 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:46:22,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:46:22,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:46:22,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:46:22,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:46:22,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:46:22,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:46:22,872 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:46:22,872 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:46:22,873 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:46:22,874 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:46:22,875 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:46:22,875 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:46:22,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:46:22,876 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:46:22,876 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:46:22,876 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:46:22,876 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:46:22,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:46:22,877 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:46:22,877 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:46:22,878 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:46:22,878 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:46:22,878 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:46:22,878 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:46:22,879 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:46:22,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:46:22,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:46:22,880 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:46:22,881 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:46:22,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:46:22,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:46:22,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:46:22,882 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:46:22,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:46:22,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:46:22,882 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:46:22,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:46:22,883 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:46:22,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:46:22,883 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:46:22,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:46:23,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:46:23,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:46:23,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:46:23,144 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:46:23,145 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:46:23,146 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-27 20:46:23,370 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:46:23,370 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:46:23,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:46:24,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:46:24,743 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:46:24,744 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:46:24,755 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dd213701/a165ed7840ad42ca978bc0d26948f9b1/FLAGdebe4213d [2024-06-27 20:46:24,767 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5dd213701/a165ed7840ad42ca978bc0d26948f9b1 [2024-06-27 20:46:24,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:46:24,769 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:46:24,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:46:24,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:46:24,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:46:24,776 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:46:23" (1/2) ... [2024-06-27 20:46:24,777 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3553dbb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:46:24, skipping insertion in model container [2024-06-27 20:46:24,777 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:46:23" (1/2) ... [2024-06-27 20:46:24,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@30f0b00b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:46:24, skipping insertion in model container [2024-06-27 20:46:24,780 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:46:24" (2/2) ... [2024-06-27 20:46:24,780 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3553dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:24, skipping insertion in model container [2024-06-27 20:46:24,780 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:46:24" (2/2) ... [2024-06-27 20:46:24,781 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:46:24,875 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:46:24,877 INFO L97 edCorrectnessWitness]: Location invariant before [L847-L847] ((((((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) [2024-06-27 20:46:24,877 INFO L97 edCorrectnessWitness]: Location invariant before [L849-L849] ((((((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) [2024-06-27 20:46:24,877 INFO L97 edCorrectnessWitness]: Location invariant before [L850-L850] ((((((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd3 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd3 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1)) [2024-06-27 20:46:24,878 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:46:24,878 INFO L106 edCorrectnessWitness]: ghost_update [L845-L845] multithreaded = 1; [2024-06-27 20:46:24,928 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:46:25,369 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:46:25,380 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:46:25,544 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:46:25,610 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:46:25,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25 WrapperNode [2024-06-27 20:46:25,611 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:46:25,612 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:46:25,612 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:46:25,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:46:25,619 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,694 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 148 [2024-06-27 20:46:25,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:46:25,700 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:46:25,700 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:46:25,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:46:25,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,728 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,753 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 20:46:25,754 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,766 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,768 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,770 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,771 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,774 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:46:25,775 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:46:25,775 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:46:25,775 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:46:25,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (1/1) ... [2024-06-27 20:46:25,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:46:25,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:46:25,806 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 20:46:25,808 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 20:46:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:46:25,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:46:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:46:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:46:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:46:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:46:25,835 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-06-27 20:46:25,835 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-06-27 20:46:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:46:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:46:25,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:46:25,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:46:25,837 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 20:46:25,960 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:46:25,962 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:46:26,341 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:46:26,342 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:46:26,520 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:46:26,520 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:46:26,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:46:26 BoogieIcfgContainer [2024-06-27 20:46:26,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:46:26,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:46:26,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:46:26,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:46:26,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:46:23" (1/4) ... [2024-06-27 20:46:26,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446aaa26 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:46:26, skipping insertion in model container [2024-06-27 20:46:26,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:46:24" (2/4) ... [2024-06-27 20:46:26,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446aaa26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:46:26, skipping insertion in model container [2024-06-27 20:46:26,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:46:25" (3/4) ... [2024-06-27 20:46:26,529 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446aaa26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:46:26, skipping insertion in model container [2024-06-27 20:46:26,529 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:46:26" (4/4) ... [2024-06-27 20:46:26,530 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi009_power.opt_pso.oepc_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-27 20:46:26,545 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:46:26,545 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-06-27 20:46:26,545 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:46:26,631 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:46:26,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 40 transitions, 92 flow [2024-06-27 20:46:26,697 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-06-27 20:46:26,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:46:26,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 37 events. 0/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 20:46:26,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 40 transitions, 92 flow [2024-06-27 20:46:26,704 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2024-06-27 20:46:26,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:46:26,724 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;@678113e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:46:26,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-06-27 20:46:26,729 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:46:26,729 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:46:26,729 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:46:26,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:26,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:46:26,731 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:26,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:26,735 INFO L85 PathProgramCache]: Analyzing trace with hash 399192754, now seen corresponding path program 1 times [2024-06-27 20:46:26,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:26,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378852886] [2024-06-27 20:46:26,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:26,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:26,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:27,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:27,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:27,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378852886] [2024-06-27 20:46:27,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378852886] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:27,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:27,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:46:27,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080633291] [2024-06-27 20:46:27,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:27,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:46:27,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:46:27,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:46:27,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 40 [2024-06-27 20:46:27,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:27,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:27,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 40 [2024-06-27 20:46:27,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:28,003 INFO L124 PetriNetUnfolderBase]: 891/1376 cut-off events. [2024-06-27 20:46:28,003 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-06-27 20:46:28,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 1376 events. 891/1376 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6697 event pairs, 520 based on Foata normal form. 2/1345 useless extension candidates. Maximal degree in co-relation 2785. Up to 1335 conditions per place. [2024-06-27 20:46:28,017 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 31 selfloop transitions, 4 changer transitions 0/42 dead transitions. [2024-06-27 20:46:28,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 169 flow [2024-06-27 20:46:28,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:46:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:46:28,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 20:46:28,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6416666666666667 [2024-06-27 20:46:28,029 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 3 states and 77 transitions. [2024-06-27 20:46:28,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 169 flow [2024-06-27 20:46:28,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 164 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-06-27 20:46:28,033 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 98 flow [2024-06-27 20:46:28,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-06-27 20:46:28,037 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2024-06-27 20:46:28,038 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 98 flow [2024-06-27 20:46:28,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:28,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:28,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:28,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:46:28,038 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:28,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:28,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1261754706, now seen corresponding path program 1 times [2024-06-27 20:46:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:28,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810568937] [2024-06-27 20:46:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:29,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:29,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:29,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810568937] [2024-06-27 20:46:29,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810568937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:29,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:29,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:46:29,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941981600] [2024-06-27 20:46:29,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:29,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:46:29,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:29,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:46:29,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:46:29,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 40 [2024-06-27 20:46:29,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:29,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:29,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 40 [2024-06-27 20:46:29,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:29,850 INFO L124 PetriNetUnfolderBase]: 1131/1733 cut-off events. [2024-06-27 20:46:29,850 INFO L125 PetriNetUnfolderBase]: For 344/344 co-relation queries the response was YES. [2024-06-27 20:46:29,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4001 conditions, 1733 events. 1131/1733 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8152 event pairs, 589 based on Foata normal form. 6/1728 useless extension candidates. Maximal degree in co-relation 3989. Up to 1639 conditions per place. [2024-06-27 20:46:29,861 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 37 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2024-06-27 20:46:29,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 49 transitions, 222 flow [2024-06-27 20:46:29,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:46:29,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:46:29,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-06-27 20:46:29,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5875 [2024-06-27 20:46:29,864 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 98 flow. Second operand 4 states and 94 transitions. [2024-06-27 20:46:29,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 49 transitions, 222 flow [2024-06-27 20:46:29,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 49 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:46:29,866 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 121 flow [2024-06-27 20:46:29,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=121, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-27 20:46:29,867 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2024-06-27 20:46:29,868 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 121 flow [2024-06-27 20:46:29,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:29,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:29,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:29,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:46:29,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:29,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:29,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1437879967, now seen corresponding path program 1 times [2024-06-27 20:46:29,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:29,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853130472] [2024-06-27 20:46:29,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:29,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:29,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:30,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:30,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853130472] [2024-06-27 20:46:30,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853130472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:30,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:30,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:46:30,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128135438] [2024-06-27 20:46:30,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:30,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:46:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:30,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:46:30,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:46:30,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-27 20:46:30,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:30,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:30,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-27 20:46:30,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:31,024 INFO L124 PetriNetUnfolderBase]: 888/1393 cut-off events. [2024-06-27 20:46:31,024 INFO L125 PetriNetUnfolderBase]: For 747/747 co-relation queries the response was YES. [2024-06-27 20:46:31,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3497 conditions, 1393 events. 888/1393 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6811 event pairs, 408 based on Foata normal form. 4/1393 useless extension candidates. Maximal degree in co-relation 3482. Up to 1326 conditions per place. [2024-06-27 20:46:31,033 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 39 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2024-06-27 20:46:31,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 53 transitions, 271 flow [2024-06-27 20:46:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:46:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:46:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 99 transitions. [2024-06-27 20:46:31,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.495 [2024-06-27 20:46:31,035 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 121 flow. Second operand 5 states and 99 transitions. [2024-06-27 20:46:31,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 53 transitions, 271 flow [2024-06-27 20:46:31,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 53 transitions, 254 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 20:46:31,038 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 170 flow [2024-06-27 20:46:31,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-06-27 20:46:31,039 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 6 predicate places. [2024-06-27 20:46:31,039 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 170 flow [2024-06-27 20:46:31,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:31,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:31,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:31,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:46:31,040 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:31,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:31,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1624605075, now seen corresponding path program 1 times [2024-06-27 20:46:31,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:31,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261326494] [2024-06-27 20:46:31,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:31,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:31,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:32,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:32,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:32,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261326494] [2024-06-27 20:46:32,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261326494] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:32,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:32,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:46:32,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24561983] [2024-06-27 20:46:32,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:32,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:46:32,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:46:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:46:32,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 40 [2024-06-27 20:46:32,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:32,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:32,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 40 [2024-06-27 20:46:32,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:32,630 INFO L124 PetriNetUnfolderBase]: 894/1404 cut-off events. [2024-06-27 20:46:32,630 INFO L125 PetriNetUnfolderBase]: For 1430/1430 co-relation queries the response was YES. [2024-06-27 20:46:32,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4032 conditions, 1404 events. 894/1404 cut-off events. For 1430/1430 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6836 event pairs, 393 based on Foata normal form. 4/1404 useless extension candidates. Maximal degree in co-relation 4014. Up to 1317 conditions per place. [2024-06-27 20:46:32,640 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 43 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2024-06-27 20:46:32,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 342 flow [2024-06-27 20:46:32,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:46:32,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:46:32,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-27 20:46:32,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-27 20:46:32,645 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 170 flow. Second operand 6 states and 118 transitions. [2024-06-27 20:46:32,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 342 flow [2024-06-27 20:46:32,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 328 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-27 20:46:32,650 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 217 flow [2024-06-27 20:46:32,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2024-06-27 20:46:32,652 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2024-06-27 20:46:32,652 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 217 flow [2024-06-27 20:46:32,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:32,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:32,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:32,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:46:32,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:32,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:32,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1945152082, now seen corresponding path program 1 times [2024-06-27 20:46:32,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:32,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300804939] [2024-06-27 20:46:32,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:32,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:33,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:33,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300804939] [2024-06-27 20:46:33,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300804939] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:33,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:33,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:46:33,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719406243] [2024-06-27 20:46:33,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:33,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:46:33,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:33,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:46:33,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:46:33,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:33,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:33,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:33,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:33,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:34,089 INFO L124 PetriNetUnfolderBase]: 1128/1754 cut-off events. [2024-06-27 20:46:34,089 INFO L125 PetriNetUnfolderBase]: For 2879/2882 co-relation queries the response was YES. [2024-06-27 20:46:34,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5485 conditions, 1754 events. 1128/1754 cut-off events. For 2879/2882 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 8439 event pairs, 441 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 5465. Up to 1625 conditions per place. [2024-06-27 20:46:34,102 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 44 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2024-06-27 20:46:34,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 391 flow [2024-06-27 20:46:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:46:34,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:46:34,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-06-27 20:46:34,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49 [2024-06-27 20:46:34,105 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 217 flow. Second operand 5 states and 98 transitions. [2024-06-27 20:46:34,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 391 flow [2024-06-27 20:46:34,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 62 transitions, 360 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:34,113 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 252 flow [2024-06-27 20:46:34,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=252, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2024-06-27 20:46:34,115 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2024-06-27 20:46:34,115 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 252 flow [2024-06-27 20:46:34,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:34,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:34,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:34,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:46:34,121 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:34,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2122649836, now seen corresponding path program 1 times [2024-06-27 20:46:34,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:34,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951463663] [2024-06-27 20:46:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:34,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:35,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:35,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951463663] [2024-06-27 20:46:35,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951463663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:35,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:35,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:46:35,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644667207] [2024-06-27 20:46:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:35,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:46:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:46:35,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:46:35,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:35,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 252 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:35,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:35,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:35,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:36,332 INFO L124 PetriNetUnfolderBase]: 1062/1627 cut-off events. [2024-06-27 20:46:36,333 INFO L125 PetriNetUnfolderBase]: For 4178/4178 co-relation queries the response was YES. [2024-06-27 20:46:36,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5630 conditions, 1627 events. 1062/1627 cut-off events. For 4178/4178 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7838 event pairs, 439 based on Foata normal form. 4/1627 useless extension candidates. Maximal degree in co-relation 5609. Up to 1529 conditions per place. [2024-06-27 20:46:36,345 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 52 selfloop transitions, 19 changer transitions 0/76 dead transitions. [2024-06-27 20:46:36,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 492 flow [2024-06-27 20:46:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:46:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:46:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 20:46:36,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-27 20:46:36,347 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 252 flow. Second operand 7 states and 132 transitions. [2024-06-27 20:46:36,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 492 flow [2024-06-27 20:46:36,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 454 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-06-27 20:46:36,351 INFO L231 Difference]: Finished difference. Result has 57 places, 56 transitions, 323 flow [2024-06-27 20:46:36,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=57, PETRI_TRANSITIONS=56} [2024-06-27 20:46:36,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2024-06-27 20:46:36,352 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 56 transitions, 323 flow [2024-06-27 20:46:36,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:36,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:36,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:46:36,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:36,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1707039555, now seen corresponding path program 1 times [2024-06-27 20:46:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390772667] [2024-06-27 20:46:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:36,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:36,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:36,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:36,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:36,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390772667] [2024-06-27 20:46:36,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390772667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:36,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:36,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:46:36,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651608628] [2024-06-27 20:46:36,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:36,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:46:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:36,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:46:36,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:46:36,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:46:36,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 56 transitions, 323 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:36,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:36,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:46:36,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:37,389 INFO L124 PetriNetUnfolderBase]: 1330/2018 cut-off events. [2024-06-27 20:46:37,389 INFO L125 PetriNetUnfolderBase]: For 4765/4765 co-relation queries the response was YES. [2024-06-27 20:46:37,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7061 conditions, 2018 events. 1330/2018 cut-off events. For 4765/4765 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9411 event pairs, 474 based on Foata normal form. 2/2017 useless extension candidates. Maximal degree in co-relation 7038. Up to 1987 conditions per place. [2024-06-27 20:46:37,405 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 59 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2024-06-27 20:46:37,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 71 transitions, 511 flow [2024-06-27 20:46:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:46:37,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:46:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 87 transitions. [2024-06-27 20:46:37,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435 [2024-06-27 20:46:37,408 INFO L175 Difference]: Start difference. First operand has 57 places, 56 transitions, 323 flow. Second operand 5 states and 87 transitions. [2024-06-27 20:46:37,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 71 transitions, 511 flow [2024-06-27 20:46:37,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 470 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:37,415 INFO L231 Difference]: Finished difference. Result has 59 places, 62 transitions, 350 flow [2024-06-27 20:46:37,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=350, PETRI_PLACES=59, PETRI_TRANSITIONS=62} [2024-06-27 20:46:37,416 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2024-06-27 20:46:37,416 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 62 transitions, 350 flow [2024-06-27 20:46:37,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:37,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:37,417 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:37,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:46:37,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:37,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:37,418 INFO L85 PathProgramCache]: Analyzing trace with hash -576925066, now seen corresponding path program 1 times [2024-06-27 20:46:37,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:37,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968234794] [2024-06-27 20:46:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:37,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:38,568 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 20:46:38,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:38,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968234794] [2024-06-27 20:46:38,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968234794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:38,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:38,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:46:38,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279837392] [2024-06-27 20:46:38,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:38,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:46:38,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:38,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:46:38,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:46:38,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:38,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 62 transitions, 350 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:38,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:38,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:38,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:39,161 INFO L124 PetriNetUnfolderBase]: 1292/2009 cut-off events. [2024-06-27 20:46:39,162 INFO L125 PetriNetUnfolderBase]: For 5529/5532 co-relation queries the response was YES. [2024-06-27 20:46:39,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7347 conditions, 2009 events. 1292/2009 cut-off events. For 5529/5532 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9919 event pairs, 414 based on Foata normal form. 4/2006 useless extension candidates. Maximal degree in co-relation 7322. Up to 1778 conditions per place. [2024-06-27 20:46:39,180 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 50 selfloop transitions, 28 changer transitions 0/84 dead transitions. [2024-06-27 20:46:39,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 590 flow [2024-06-27 20:46:39,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:46:39,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:46:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 118 transitions. [2024-06-27 20:46:39,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-27 20:46:39,183 INFO L175 Difference]: Start difference. First operand has 59 places, 62 transitions, 350 flow. Second operand 6 states and 118 transitions. [2024-06-27 20:46:39,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 590 flow [2024-06-27 20:46:39,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 584 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-06-27 20:46:39,189 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 451 flow [2024-06-27 20:46:39,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=451, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2024-06-27 20:46:39,189 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 23 predicate places. [2024-06-27 20:46:39,189 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 451 flow [2024-06-27 20:46:39,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:39,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:39,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:39,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:46:39,190 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:39,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:39,190 INFO L85 PathProgramCache]: Analyzing trace with hash -500833466, now seen corresponding path program 2 times [2024-06-27 20:46:39,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:39,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992128928] [2024-06-27 20:46:39,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:39,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:40,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992128928] [2024-06-27 20:46:40,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992128928] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:40,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:40,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:46:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516567157] [2024-06-27 20:46:40,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:40,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:46:40,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:46:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:46:40,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:40,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 451 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:40,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:40,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:40,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:41,698 INFO L124 PetriNetUnfolderBase]: 1405/2202 cut-off events. [2024-06-27 20:46:41,699 INFO L125 PetriNetUnfolderBase]: For 8146/8146 co-relation queries the response was YES. [2024-06-27 20:46:41,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8828 conditions, 2202 events. 1405/2202 cut-off events. For 8146/8146 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 11045 event pairs, 424 based on Foata normal form. 4/2203 useless extension candidates. Maximal degree in co-relation 8800. Up to 1992 conditions per place. [2024-06-27 20:46:41,714 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 84 selfloop transitions, 34 changer transitions 0/124 dead transitions. [2024-06-27 20:46:41,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 124 transitions, 998 flow [2024-06-27 20:46:41,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:46:41,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:46:41,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 20:46:41,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-27 20:46:41,716 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 451 flow. Second operand 11 states and 199 transitions. [2024-06-27 20:46:41,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 124 transitions, 998 flow [2024-06-27 20:46:41,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 124 transitions, 922 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:41,727 INFO L231 Difference]: Finished difference. Result has 75 places, 91 transitions, 729 flow [2024-06-27 20:46:41,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=729, PETRI_PLACES=75, PETRI_TRANSITIONS=91} [2024-06-27 20:46:41,728 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 34 predicate places. [2024-06-27 20:46:41,728 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 91 transitions, 729 flow [2024-06-27 20:46:41,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:41,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:41,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:41,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:46:41,729 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:41,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:41,729 INFO L85 PathProgramCache]: Analyzing trace with hash 173897990, now seen corresponding path program 3 times [2024-06-27 20:46:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:41,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200999280] [2024-06-27 20:46:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:42,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:42,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:42,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200999280] [2024-06-27 20:46:42,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200999280] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:42,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:42,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:46:42,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334596131] [2024-06-27 20:46:42,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:42,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:46:42,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:46:42,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:46:43,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:43,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 91 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:43,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:43,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:43,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:43,519 INFO L124 PetriNetUnfolderBase]: 1404/2198 cut-off events. [2024-06-27 20:46:43,520 INFO L125 PetriNetUnfolderBase]: For 11082/11088 co-relation queries the response was YES. [2024-06-27 20:46:43,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9575 conditions, 2198 events. 1404/2198 cut-off events. For 11082/11088 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10942 event pairs, 419 based on Foata normal form. 10/2201 useless extension candidates. Maximal degree in co-relation 9542. Up to 1839 conditions per place. [2024-06-27 20:46:43,541 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 68 selfloop transitions, 48 changer transitions 0/122 dead transitions. [2024-06-27 20:46:43,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 122 transitions, 1157 flow [2024-06-27 20:46:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:46:43,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:46:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 20:46:43,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48928571428571427 [2024-06-27 20:46:43,543 INFO L175 Difference]: Start difference. First operand has 75 places, 91 transitions, 729 flow. Second operand 7 states and 137 transitions. [2024-06-27 20:46:43,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 122 transitions, 1157 flow [2024-06-27 20:46:43,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 122 transitions, 1100 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:43,562 INFO L231 Difference]: Finished difference. Result has 78 places, 98 transitions, 870 flow [2024-06-27 20:46:43,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=870, PETRI_PLACES=78, PETRI_TRANSITIONS=98} [2024-06-27 20:46:43,564 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 37 predicate places. [2024-06-27 20:46:43,564 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 98 transitions, 870 flow [2024-06-27 20:46:43,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:43,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:43,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:43,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:46:43,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:43,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:43,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1377636511, now seen corresponding path program 1 times [2024-06-27 20:46:43,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:43,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018904950] [2024-06-27 20:46:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:43,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:44,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:44,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018904950] [2024-06-27 20:46:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018904950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:44,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:44,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:46:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330903602] [2024-06-27 20:46:44,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:44,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:46:44,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:44,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:46:44,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:46:44,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:44,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 98 transitions, 870 flow. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 20:46:44,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:44,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:44,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:45,555 INFO L124 PetriNetUnfolderBase]: 1436/2269 cut-off events. [2024-06-27 20:46:45,555 INFO L125 PetriNetUnfolderBase]: For 15002/15003 co-relation queries the response was YES. [2024-06-27 20:46:45,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10643 conditions, 2269 events. 1436/2269 cut-off events. For 15002/15003 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 11172 event pairs, 433 based on Foata normal form. 28/2287 useless extension candidates. Maximal degree in co-relation 10610. Up to 1837 conditions per place. [2024-06-27 20:46:45,573 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 81 selfloop transitions, 41 changer transitions 0/129 dead transitions. [2024-06-27 20:46:45,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 129 transitions, 1268 flow [2024-06-27 20:46:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:46:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:46:45,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 153 transitions. [2024-06-27 20:46:45,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478125 [2024-06-27 20:46:45,575 INFO L175 Difference]: Start difference. First operand has 78 places, 98 transitions, 870 flow. Second operand 8 states and 153 transitions. [2024-06-27 20:46:45,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 129 transitions, 1268 flow [2024-06-27 20:46:45,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 129 transitions, 1214 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 20:46:45,597 INFO L231 Difference]: Finished difference. Result has 83 places, 100 transitions, 940 flow [2024-06-27 20:46:45,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=940, PETRI_PLACES=83, PETRI_TRANSITIONS=100} [2024-06-27 20:46:45,598 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-27 20:46:45,598 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 100 transitions, 940 flow [2024-06-27 20:46:45,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 9 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 20:46:45,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:45,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:45,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:46:45,599 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:45,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:45,600 INFO L85 PathProgramCache]: Analyzing trace with hash 977545297, now seen corresponding path program 1 times [2024-06-27 20:46:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:45,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336778234] [2024-06-27 20:46:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:45,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:46,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:46,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336778234] [2024-06-27 20:46:46,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336778234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:46,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:46,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:46:46,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253209749] [2024-06-27 20:46:46,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:46,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:46:46,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:46,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:46:46,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:46:46,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:46,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 100 transitions, 940 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:46,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:46,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:46,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:47,037 INFO L124 PetriNetUnfolderBase]: 1480/2324 cut-off events. [2024-06-27 20:46:47,038 INFO L125 PetriNetUnfolderBase]: For 16513/16513 co-relation queries the response was YES. [2024-06-27 20:46:47,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11240 conditions, 2324 events. 1480/2324 cut-off events. For 16513/16513 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11720 event pairs, 297 based on Foata normal form. 4/2318 useless extension candidates. Maximal degree in co-relation 11205. Up to 2114 conditions per place. [2024-06-27 20:46:47,057 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 98 selfloop transitions, 15 changer transitions 0/119 dead transitions. [2024-06-27 20:46:47,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1246 flow [2024-06-27 20:46:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:46:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:46:47,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 113 transitions. [2024-06-27 20:46:47,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708333333333333 [2024-06-27 20:46:47,059 INFO L175 Difference]: Start difference. First operand has 83 places, 100 transitions, 940 flow. Second operand 6 states and 113 transitions. [2024-06-27 20:46:47,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1246 flow [2024-06-27 20:46:47,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 119 transitions, 1164 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 20:46:47,083 INFO L231 Difference]: Finished difference. Result has 83 places, 102 transitions, 923 flow [2024-06-27 20:46:47,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=923, PETRI_PLACES=83, PETRI_TRANSITIONS=102} [2024-06-27 20:46:47,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 42 predicate places. [2024-06-27 20:46:47,084 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 102 transitions, 923 flow [2024-06-27 20:46:47,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:47,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:47,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:47,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:46:47,085 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:47,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash -676523631, now seen corresponding path program 2 times [2024-06-27 20:46:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:47,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415877010] [2024-06-27 20:46:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:47,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:48,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:48,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:48,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415877010] [2024-06-27 20:46:48,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415877010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:48,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:48,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:46:48,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085316249] [2024-06-27 20:46:48,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:48,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:46:48,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:48,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:46:48,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:46:48,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:48,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 102 transitions, 923 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:48,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:48,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:48,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:48,704 INFO L124 PetriNetUnfolderBase]: 1497/2349 cut-off events. [2024-06-27 20:46:48,704 INFO L125 PetriNetUnfolderBase]: For 17912/17912 co-relation queries the response was YES. [2024-06-27 20:46:48,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11440 conditions, 2349 events. 1497/2349 cut-off events. For 17912/17912 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11923 event pairs, 396 based on Foata normal form. 4/2343 useless extension candidates. Maximal degree in co-relation 11404. Up to 2133 conditions per place. [2024-06-27 20:46:48,721 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 99 selfloop transitions, 24 changer transitions 0/129 dead transitions. [2024-06-27 20:46:48,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 129 transitions, 1351 flow [2024-06-27 20:46:48,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:46:48,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:46:48,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 20:46:48,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 20:46:48,723 INFO L175 Difference]: Start difference. First operand has 83 places, 102 transitions, 923 flow. Second operand 6 states and 115 transitions. [2024-06-27 20:46:48,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 129 transitions, 1351 flow [2024-06-27 20:46:48,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 1304 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:48,753 INFO L231 Difference]: Finished difference. Result has 86 places, 111 transitions, 1082 flow [2024-06-27 20:46:48,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1082, PETRI_PLACES=86, PETRI_TRANSITIONS=111} [2024-06-27 20:46:48,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 45 predicate places. [2024-06-27 20:46:48,754 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 111 transitions, 1082 flow [2024-06-27 20:46:48,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:48,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:48,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:48,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:46:48,755 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:48,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:48,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1904126473, now seen corresponding path program 3 times [2024-06-27 20:46:48,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:48,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550145680] [2024-06-27 20:46:48,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:48,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:49,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:49,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550145680] [2024-06-27 20:46:49,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550145680] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:49,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:49,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:46:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694768983] [2024-06-27 20:46:49,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:46:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:46:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:46:49,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:49,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 111 transitions, 1082 flow. Second operand has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:49,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:49,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:49,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:50,328 INFO L124 PetriNetUnfolderBase]: 1489/2341 cut-off events. [2024-06-27 20:46:50,328 INFO L125 PetriNetUnfolderBase]: For 20498/20504 co-relation queries the response was YES. [2024-06-27 20:46:50,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11785 conditions, 2341 events. 1489/2341 cut-off events. For 20498/20504 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11887 event pairs, 387 based on Foata normal form. 8/2342 useless extension candidates. Maximal degree in co-relation 11747. Up to 2115 conditions per place. [2024-06-27 20:46:50,375 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 97 selfloop transitions, 32 changer transitions 0/135 dead transitions. [2024-06-27 20:46:50,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 135 transitions, 1450 flow [2024-06-27 20:46:50,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:46:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:46:50,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 20:46:50,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-06-27 20:46:50,377 INFO L175 Difference]: Start difference. First operand has 86 places, 111 transitions, 1082 flow. Second operand 7 states and 130 transitions. [2024-06-27 20:46:50,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 135 transitions, 1450 flow [2024-06-27 20:46:50,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 135 transitions, 1359 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:50,447 INFO L231 Difference]: Finished difference. Result has 89 places, 113 transitions, 1101 flow [2024-06-27 20:46:50,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=991, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1101, PETRI_PLACES=89, PETRI_TRANSITIONS=113} [2024-06-27 20:46:50,452 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 48 predicate places. [2024-06-27 20:46:50,453 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 113 transitions, 1101 flow [2024-06-27 20:46:50,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:50,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:50,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:50,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:46:50,453 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:50,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:50,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1573631842, now seen corresponding path program 1 times [2024-06-27 20:46:50,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:50,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557744013] [2024-06-27 20:46:50,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:50,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:51,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:51,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557744013] [2024-06-27 20:46:51,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557744013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:51,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:51,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:46:51,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195922161] [2024-06-27 20:46:51,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:51,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:46:51,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:46:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:46:51,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:46:51,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 113 transitions, 1101 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 20:46:51,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:51,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:46:51,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:51,667 INFO L124 PetriNetUnfolderBase]: 1590/2454 cut-off events. [2024-06-27 20:46:51,667 INFO L125 PetriNetUnfolderBase]: For 22885/22885 co-relation queries the response was YES. [2024-06-27 20:46:51,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12467 conditions, 2454 events. 1590/2454 cut-off events. For 22885/22885 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 12031 event pairs, 435 based on Foata normal form. 4/2448 useless extension candidates. Maximal degree in co-relation 12428. Up to 2325 conditions per place. [2024-06-27 20:46:51,690 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 105 selfloop transitions, 17 changer transitions 0/126 dead transitions. [2024-06-27 20:46:51,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 126 transitions, 1415 flow [2024-06-27 20:46:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:46:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:46:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2024-06-27 20:46:51,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-27 20:46:51,693 INFO L175 Difference]: Start difference. First operand has 89 places, 113 transitions, 1101 flow. Second operand 5 states and 91 transitions. [2024-06-27 20:46:51,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 126 transitions, 1415 flow [2024-06-27 20:46:51,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 126 transitions, 1321 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:51,725 INFO L231 Difference]: Finished difference. Result has 90 places, 116 transitions, 1087 flow [2024-06-27 20:46:51,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1087, PETRI_PLACES=90, PETRI_TRANSITIONS=116} [2024-06-27 20:46:51,727 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 49 predicate places. [2024-06-27 20:46:51,727 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 116 transitions, 1087 flow [2024-06-27 20:46:51,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 20:46:51,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:51,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:51,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:46:51,728 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:51,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash -212464798, now seen corresponding path program 2 times [2024-06-27 20:46:51,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:51,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939552800] [2024-06-27 20:46:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:51,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:51,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:52,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:52,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939552800] [2024-06-27 20:46:52,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939552800] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:52,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:52,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:46:52,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879746508] [2024-06-27 20:46:52,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:52,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:46:52,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:46:52,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:46:52,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:46:52,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 116 transitions, 1087 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 20:46:52,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:52,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:46:52,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:52,880 INFO L124 PetriNetUnfolderBase]: 1578/2438 cut-off events. [2024-06-27 20:46:52,880 INFO L125 PetriNetUnfolderBase]: For 24160/24160 co-relation queries the response was YES. [2024-06-27 20:46:52,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12643 conditions, 2438 events. 1578/2438 cut-off events. For 24160/24160 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11975 event pairs, 433 based on Foata normal form. 4/2432 useless extension candidates. Maximal degree in co-relation 12603. Up to 2293 conditions per place. [2024-06-27 20:46:52,898 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 108 selfloop transitions, 20 changer transitions 0/132 dead transitions. [2024-06-27 20:46:52,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 132 transitions, 1437 flow [2024-06-27 20:46:52,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:46:52,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:46:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 106 transitions. [2024-06-27 20:46:52,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 20:46:52,900 INFO L175 Difference]: Start difference. First operand has 90 places, 116 transitions, 1087 flow. Second operand 6 states and 106 transitions. [2024-06-27 20:46:52,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 132 transitions, 1437 flow [2024-06-27 20:46:52,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 132 transitions, 1389 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 20:46:52,934 INFO L231 Difference]: Finished difference. Result has 93 places, 119 transitions, 1125 flow [2024-06-27 20:46:52,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1125, PETRI_PLACES=93, PETRI_TRANSITIONS=119} [2024-06-27 20:46:52,935 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 52 predicate places. [2024-06-27 20:46:52,935 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 119 transitions, 1125 flow [2024-06-27 20:46:52,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 20:46:52,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:52,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:52,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:46:52,936 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:52,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:52,936 INFO L85 PathProgramCache]: Analyzing trace with hash 503429302, now seen corresponding path program 1 times [2024-06-27 20:46:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:52,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831949342] [2024-06-27 20:46:52,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:52,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:53,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:53,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:53,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831949342] [2024-06-27 20:46:53,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831949342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:53,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:53,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:46:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088767753] [2024-06-27 20:46:53,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:53,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:46:53,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:53,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:46:53,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:46:53,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:46:53,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 119 transitions, 1125 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 20:46:53,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:53,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:46:53,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:53,991 INFO L124 PetriNetUnfolderBase]: 1596/2465 cut-off events. [2024-06-27 20:46:53,991 INFO L125 PetriNetUnfolderBase]: For 24219/24219 co-relation queries the response was YES. [2024-06-27 20:46:53,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12849 conditions, 2465 events. 1596/2465 cut-off events. For 24219/24219 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 12058 event pairs, 445 based on Foata normal form. 2/2464 useless extension candidates. Maximal degree in co-relation 12808. Up to 2372 conditions per place. [2024-06-27 20:46:54,007 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 126 selfloop transitions, 15 changer transitions 0/145 dead transitions. [2024-06-27 20:46:54,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 145 transitions, 1568 flow [2024-06-27 20:46:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:46:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:46:54,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-27 20:46:54,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-27 20:46:54,009 INFO L175 Difference]: Start difference. First operand has 93 places, 119 transitions, 1125 flow. Second operand 6 states and 107 transitions. [2024-06-27 20:46:54,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 145 transitions, 1568 flow [2024-06-27 20:46:54,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 145 transitions, 1509 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:54,042 INFO L231 Difference]: Finished difference. Result has 97 places, 130 transitions, 1218 flow [2024-06-27 20:46:54,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1218, PETRI_PLACES=97, PETRI_TRANSITIONS=130} [2024-06-27 20:46:54,043 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 56 predicate places. [2024-06-27 20:46:54,043 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 130 transitions, 1218 flow [2024-06-27 20:46:54,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 20:46:54,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:54,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:54,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:46:54,044 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:54,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash 847476104, now seen corresponding path program 2 times [2024-06-27 20:46:54,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:54,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615801428] [2024-06-27 20:46:54,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:54,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:54,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:54,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615801428] [2024-06-27 20:46:54,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615801428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:54,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:46:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312603657] [2024-06-27 20:46:54,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:54,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:46:54,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:54,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:46:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:46:54,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:46:54,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 130 transitions, 1218 flow. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 20:46:54,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:54,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:46:54,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:55,059 INFO L124 PetriNetUnfolderBase]: 1590/2457 cut-off events. [2024-06-27 20:46:55,059 INFO L125 PetriNetUnfolderBase]: For 26177/26177 co-relation queries the response was YES. [2024-06-27 20:46:55,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13287 conditions, 2457 events. 1590/2457 cut-off events. For 26177/26177 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 12064 event pairs, 443 based on Foata normal form. 2/2456 useless extension candidates. Maximal degree in co-relation 13243. Up to 2382 conditions per place. [2024-06-27 20:46:55,076 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 126 selfloop transitions, 11 changer transitions 0/141 dead transitions. [2024-06-27 20:46:55,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 141 transitions, 1531 flow [2024-06-27 20:46:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:46:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:46:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 20:46:55,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 20:46:55,078 INFO L175 Difference]: Start difference. First operand has 97 places, 130 transitions, 1218 flow. Second operand 6 states and 100 transitions. [2024-06-27 20:46:55,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 141 transitions, 1531 flow [2024-06-27 20:46:55,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 141 transitions, 1497 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 20:46:55,119 INFO L231 Difference]: Finished difference. Result has 102 places, 131 transitions, 1221 flow [2024-06-27 20:46:55,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1221, PETRI_PLACES=102, PETRI_TRANSITIONS=131} [2024-06-27 20:46:55,120 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 61 predicate places. [2024-06-27 20:46:55,120 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 131 transitions, 1221 flow [2024-06-27 20:46:55,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 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 20:46:55,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:55,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:55,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:46:55,121 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:55,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:55,121 INFO L85 PathProgramCache]: Analyzing trace with hash -212449918, now seen corresponding path program 1 times [2024-06-27 20:46:55,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:55,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601477632] [2024-06-27 20:46:55,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:55,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:55,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:55,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601477632] [2024-06-27 20:46:55,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601477632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:55,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:55,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:46:55,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312824910] [2024-06-27 20:46:55,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:55,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:46:55,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:55,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:46:55,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:46:55,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:46:55,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 131 transitions, 1221 flow. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:55,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:55,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:46:55,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:56,399 INFO L124 PetriNetUnfolderBase]: 1585/2450 cut-off events. [2024-06-27 20:46:56,399 INFO L125 PetriNetUnfolderBase]: For 28040/28040 co-relation queries the response was YES. [2024-06-27 20:46:56,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13368 conditions, 2450 events. 1585/2450 cut-off events. For 28040/28040 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 11964 event pairs, 442 based on Foata normal form. 2/2449 useless extension candidates. Maximal degree in co-relation 13321. Up to 2372 conditions per place. [2024-06-27 20:46:56,413 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 127 selfloop transitions, 12 changer transitions 0/143 dead transitions. [2024-06-27 20:46:56,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 143 transitions, 1545 flow [2024-06-27 20:46:56,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:46:56,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:46:56,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 20:46:56,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 20:46:56,414 INFO L175 Difference]: Start difference. First operand has 102 places, 131 transitions, 1221 flow. Second operand 6 states and 100 transitions. [2024-06-27 20:46:56,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 143 transitions, 1545 flow [2024-06-27 20:46:56,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 143 transitions, 1523 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:56,452 INFO L231 Difference]: Finished difference. Result has 104 places, 133 transitions, 1248 flow [2024-06-27 20:46:56,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1199, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1248, PETRI_PLACES=104, PETRI_TRANSITIONS=133} [2024-06-27 20:46:56,453 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 63 predicate places. [2024-06-27 20:46:56,453 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 133 transitions, 1248 flow [2024-06-27 20:46:56,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:46:56,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:56,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:56,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:46:56,454 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:56,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash 239134077, now seen corresponding path program 1 times [2024-06-27 20:46:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:56,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134675288] [2024-06-27 20:46:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:57,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:57,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134675288] [2024-06-27 20:46:57,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134675288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:57,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:57,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:46:57,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481852735] [2024-06-27 20:46:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:57,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:46:57,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:57,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:46:57,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:46:57,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:57,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 133 transitions, 1248 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 20:46:57,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:57,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:57,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:46:58,106 INFO L124 PetriNetUnfolderBase]: 1587/2500 cut-off events. [2024-06-27 20:46:58,106 INFO L125 PetriNetUnfolderBase]: For 33569/33569 co-relation queries the response was YES. [2024-06-27 20:46:58,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14014 conditions, 2500 events. 1587/2500 cut-off events. For 33569/33569 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12705 event pairs, 288 based on Foata normal form. 16/2506 useless extension candidates. Maximal degree in co-relation 13967. Up to 2196 conditions per place. [2024-06-27 20:46:58,122 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 137 selfloop transitions, 16 changer transitions 0/159 dead transitions. [2024-06-27 20:46:58,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 159 transitions, 1670 flow [2024-06-27 20:46:58,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:46:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:46:58,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-06-27 20:46:58,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4714285714285714 [2024-06-27 20:46:58,124 INFO L175 Difference]: Start difference. First operand has 104 places, 133 transitions, 1248 flow. Second operand 7 states and 132 transitions. [2024-06-27 20:46:58,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 159 transitions, 1670 flow [2024-06-27 20:46:58,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 159 transitions, 1637 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 20:46:58,168 INFO L231 Difference]: Finished difference. Result has 107 places, 134 transitions, 1281 flow [2024-06-27 20:46:58,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1215, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1281, PETRI_PLACES=107, PETRI_TRANSITIONS=134} [2024-06-27 20:46:58,168 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 66 predicate places. [2024-06-27 20:46:58,168 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 134 transitions, 1281 flow [2024-06-27 20:46:58,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 20:46:58,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:46:58,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:46:58,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:46:58,171 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:46:58,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:46:58,171 INFO L85 PathProgramCache]: Analyzing trace with hash 350557611, now seen corresponding path program 2 times [2024-06-27 20:46:58,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:46:58,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253256710] [2024-06-27 20:46:58,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:46:58,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:46:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:46:59,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:46:59,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:46:59,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253256710] [2024-06-27 20:46:59,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253256710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:46:59,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:46:59,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:46:59,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135798386] [2024-06-27 20:46:59,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:46:59,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:46:59,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:46:59,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:46:59,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:46:59,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:46:59,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 134 transitions, 1281 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 20:46:59,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:46:59,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:46:59,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:00,142 INFO L124 PetriNetUnfolderBase]: 1637/2606 cut-off events. [2024-06-27 20:47:00,142 INFO L125 PetriNetUnfolderBase]: For 37454/37454 co-relation queries the response was YES. [2024-06-27 20:47:00,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14711 conditions, 2606 events. 1637/2606 cut-off events. For 37454/37454 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13622 event pairs, 351 based on Foata normal form. 20/2616 useless extension candidates. Maximal degree in co-relation 14663. Up to 1939 conditions per place. [2024-06-27 20:47:00,159 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 100 selfloop transitions, 56 changer transitions 0/162 dead transitions. [2024-06-27 20:47:00,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 162 transitions, 1751 flow [2024-06-27 20:47:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:00,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:00,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 140 transitions. [2024-06-27 20:47:00,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 20:47:00,161 INFO L175 Difference]: Start difference. First operand has 107 places, 134 transitions, 1281 flow. Second operand 7 states and 140 transitions. [2024-06-27 20:47:00,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 162 transitions, 1751 flow [2024-06-27 20:47:00,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 162 transitions, 1707 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:00,199 INFO L231 Difference]: Finished difference. Result has 109 places, 135 transitions, 1394 flow [2024-06-27 20:47:00,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1394, PETRI_PLACES=109, PETRI_TRANSITIONS=135} [2024-06-27 20:47:00,199 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 68 predicate places. [2024-06-27 20:47:00,200 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 135 transitions, 1394 flow [2024-06-27 20:47:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 20:47:00,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:00,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:00,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:47:00,200 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:00,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash 350409741, now seen corresponding path program 3 times [2024-06-27 20:47:00,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:00,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756361138] [2024-06-27 20:47:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:00,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:01,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:01,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756361138] [2024-06-27 20:47:01,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756361138] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:01,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:01,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:47:01,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428033776] [2024-06-27 20:47:01,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:01,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:47:01,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:01,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:47:01,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:47:01,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:47:01,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 135 transitions, 1394 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 20:47:01,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:01,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:47:01,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:01,979 INFO L124 PetriNetUnfolderBase]: 1706/2729 cut-off events. [2024-06-27 20:47:01,979 INFO L125 PetriNetUnfolderBase]: For 42361/42361 co-relation queries the response was YES. [2024-06-27 20:47:01,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15773 conditions, 2729 events. 1706/2729 cut-off events. For 42361/42361 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14513 event pairs, 406 based on Foata normal form. 16/2735 useless extension candidates. Maximal degree in co-relation 15724. Up to 2333 conditions per place. [2024-06-27 20:47:01,997 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 115 selfloop transitions, 39 changer transitions 0/160 dead transitions. [2024-06-27 20:47:01,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 160 transitions, 1820 flow [2024-06-27 20:47:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-06-27 20:47:01,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-06-27 20:47:01,998 INFO L175 Difference]: Start difference. First operand has 109 places, 135 transitions, 1394 flow. Second operand 7 states and 134 transitions. [2024-06-27 20:47:01,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 160 transitions, 1820 flow [2024-06-27 20:47:02,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 160 transitions, 1709 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:02,042 INFO L231 Difference]: Finished difference. Result has 111 places, 136 transitions, 1400 flow [2024-06-27 20:47:02,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1400, PETRI_PLACES=111, PETRI_TRANSITIONS=136} [2024-06-27 20:47:02,043 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 70 predicate places. [2024-06-27 20:47:02,043 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 136 transitions, 1400 flow [2024-06-27 20:47:02,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 20:47:02,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:02,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:02,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:47:02,043 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:02,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash -2110294139, now seen corresponding path program 4 times [2024-06-27 20:47:02,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:02,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820798845] [2024-06-27 20:47:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:02,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:02,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:03,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:03,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:03,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820798845] [2024-06-27 20:47:03,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820798845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:03,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:03,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:47:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909832539] [2024-06-27 20:47:03,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:03,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:47:03,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:03,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:47:03,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:47:03,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 40 [2024-06-27 20:47:03,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 136 transitions, 1400 flow. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 20:47:03,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:03,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 40 [2024-06-27 20:47:03,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:03,860 INFO L124 PetriNetUnfolderBase]: 1752/2811 cut-off events. [2024-06-27 20:47:03,860 INFO L125 PetriNetUnfolderBase]: For 46865/46871 co-relation queries the response was YES. [2024-06-27 20:47:03,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16154 conditions, 2811 events. 1752/2811 cut-off events. For 46865/46871 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 15086 event pairs, 425 based on Foata normal form. 28/2832 useless extension candidates. Maximal degree in co-relation 16104. Up to 2290 conditions per place. [2024-06-27 20:47:03,875 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 104 selfloop transitions, 58 changer transitions 0/168 dead transitions. [2024-06-27 20:47:03,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 168 transitions, 1958 flow [2024-06-27 20:47:03,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:47:03,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:47:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 157 transitions. [2024-06-27 20:47:03,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.490625 [2024-06-27 20:47:03,877 INFO L175 Difference]: Start difference. First operand has 111 places, 136 transitions, 1400 flow. Second operand 8 states and 157 transitions. [2024-06-27 20:47:03,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 168 transitions, 1958 flow [2024-06-27 20:47:03,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 168 transitions, 1865 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:03,929 INFO L231 Difference]: Finished difference. Result has 114 places, 138 transitions, 1476 flow [2024-06-27 20:47:03,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1476, PETRI_PLACES=114, PETRI_TRANSITIONS=138} [2024-06-27 20:47:03,930 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 73 predicate places. [2024-06-27 20:47:03,930 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 138 transitions, 1476 flow [2024-06-27 20:47:03,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 10 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 20:47:03,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:03,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:03,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:47:03,931 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:03,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:03,931 INFO L85 PathProgramCache]: Analyzing trace with hash -2110086377, now seen corresponding path program 1 times [2024-06-27 20:47:03,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:03,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863775753] [2024-06-27 20:47:03,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:03,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:05,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:05,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863775753] [2024-06-27 20:47:05,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863775753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:05,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:05,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:47:05,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177016944] [2024-06-27 20:47:05,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:05,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:47:05,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:05,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:47:05,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:47:05,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:05,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 1476 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 20:47:05,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:05,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:05,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:06,523 INFO L124 PetriNetUnfolderBase]: 1902/2986 cut-off events. [2024-06-27 20:47:06,523 INFO L125 PetriNetUnfolderBase]: For 46386/46392 co-relation queries the response was YES. [2024-06-27 20:47:06,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17231 conditions, 2986 events. 1902/2986 cut-off events. For 46386/46392 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15555 event pairs, 481 based on Foata normal form. 6/2985 useless extension candidates. Maximal degree in co-relation 17180. Up to 2652 conditions per place. [2024-06-27 20:47:06,539 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 116 selfloop transitions, 63 changer transitions 0/183 dead transitions. [2024-06-27 20:47:06,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 183 transitions, 2114 flow [2024-06-27 20:47:06,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:47:06,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:47:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 20:47:06,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-27 20:47:06,540 INFO L175 Difference]: Start difference. First operand has 114 places, 138 transitions, 1476 flow. Second operand 9 states and 161 transitions. [2024-06-27 20:47:06,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 183 transitions, 2114 flow [2024-06-27 20:47:06,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 183 transitions, 1960 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 20:47:06,597 INFO L231 Difference]: Finished difference. Result has 118 places, 154 transitions, 1657 flow [2024-06-27 20:47:06,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1347, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1657, PETRI_PLACES=118, PETRI_TRANSITIONS=154} [2024-06-27 20:47:06,597 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 77 predicate places. [2024-06-27 20:47:06,597 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 154 transitions, 1657 flow [2024-06-27 20:47:06,597 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 20:47:06,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:06,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:06,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:47:06,598 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:06,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:06,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2110288187, now seen corresponding path program 2 times [2024-06-27 20:47:06,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:06,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074066666] [2024-06-27 20:47:06,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:06,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:08,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:08,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074066666] [2024-06-27 20:47:08,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074066666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:08,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:08,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:47:08,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888089029] [2024-06-27 20:47:08,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:08,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:47:08,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:47:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:47:08,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:08,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 154 transitions, 1657 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 20:47:08,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:08,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:08,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:09,573 INFO L124 PetriNetUnfolderBase]: 1897/2979 cut-off events. [2024-06-27 20:47:09,573 INFO L125 PetriNetUnfolderBase]: For 47039/47045 co-relation queries the response was YES. [2024-06-27 20:47:09,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17300 conditions, 2979 events. 1897/2979 cut-off events. For 47039/47045 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15496 event pairs, 481 based on Foata normal form. 6/2978 useless extension candidates. Maximal degree in co-relation 17247. Up to 2645 conditions per place. [2024-06-27 20:47:09,591 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 114 selfloop transitions, 64 changer transitions 0/182 dead transitions. [2024-06-27 20:47:09,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 182 transitions, 2115 flow [2024-06-27 20:47:09,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:47:09,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:47:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 20:47:09,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-27 20:47:09,592 INFO L175 Difference]: Start difference. First operand has 118 places, 154 transitions, 1657 flow. Second operand 9 states and 161 transitions. [2024-06-27 20:47:09,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 182 transitions, 2115 flow [2024-06-27 20:47:09,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 182 transitions, 2035 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 20:47:09,654 INFO L231 Difference]: Finished difference. Result has 124 places, 154 transitions, 1714 flow [2024-06-27 20:47:09,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1714, PETRI_PLACES=124, PETRI_TRANSITIONS=154} [2024-06-27 20:47:09,655 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 83 predicate places. [2024-06-27 20:47:09,655 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 154 transitions, 1714 flow [2024-06-27 20:47:09,655 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 20:47:09,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:09,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:09,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:47:09,655 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:09,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:09,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1796908378, now seen corresponding path program 1 times [2024-06-27 20:47:09,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:09,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981825307] [2024-06-27 20:47:09,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:09,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:10,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981825307] [2024-06-27 20:47:10,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981825307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:10,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:10,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:10,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933667575] [2024-06-27 20:47:10,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:10,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:10,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:10,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:10,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:10,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:10,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 154 transitions, 1714 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:10,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:10,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:10,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:10,820 INFO L124 PetriNetUnfolderBase]: 1915/3002 cut-off events. [2024-06-27 20:47:10,820 INFO L125 PetriNetUnfolderBase]: For 51047/51047 co-relation queries the response was YES. [2024-06-27 20:47:10,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17650 conditions, 3002 events. 1915/3002 cut-off events. For 51047/51047 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15625 event pairs, 503 based on Foata normal form. 2/3001 useless extension candidates. Maximal degree in co-relation 17595. Up to 2872 conditions per place. [2024-06-27 20:47:10,884 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 155 selfloop transitions, 23 changer transitions 0/182 dead transitions. [2024-06-27 20:47:10,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 182 transitions, 2250 flow [2024-06-27 20:47:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 20:47:10,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-27 20:47:10,886 INFO L175 Difference]: Start difference. First operand has 124 places, 154 transitions, 1714 flow. Second operand 7 states and 125 transitions. [2024-06-27 20:47:10,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 182 transitions, 2250 flow [2024-06-27 20:47:10,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 182 transitions, 2071 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 20:47:10,948 INFO L231 Difference]: Finished difference. Result has 125 places, 162 transitions, 1671 flow [2024-06-27 20:47:10,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1540, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1671, PETRI_PLACES=125, PETRI_TRANSITIONS=162} [2024-06-27 20:47:10,949 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 84 predicate places. [2024-06-27 20:47:10,949 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 162 transitions, 1671 flow [2024-06-27 20:47:10,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:10,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:10,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:10,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:47:10,949 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:10,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:10,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1797058108, now seen corresponding path program 2 times [2024-06-27 20:47:10,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:10,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353566621] [2024-06-27 20:47:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:10,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:10,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:11,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:11,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353566621] [2024-06-27 20:47:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353566621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:11,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414847617] [2024-06-27 20:47:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:11,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:11,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 162 transitions, 1671 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:11,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:11,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:11,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:12,319 INFO L124 PetriNetUnfolderBase]: 1925/3016 cut-off events. [2024-06-27 20:47:12,319 INFO L125 PetriNetUnfolderBase]: For 53944/53944 co-relation queries the response was YES. [2024-06-27 20:47:12,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17902 conditions, 3016 events. 1925/3016 cut-off events. For 53944/53944 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15689 event pairs, 504 based on Foata normal form. 2/3015 useless extension candidates. Maximal degree in co-relation 17846. Up to 2908 conditions per place. [2024-06-27 20:47:12,339 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 157 selfloop transitions, 21 changer transitions 0/182 dead transitions. [2024-06-27 20:47:12,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 182 transitions, 2120 flow [2024-06-27 20:47:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:47:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:47:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 20:47:12,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:47:12,340 INFO L175 Difference]: Start difference. First operand has 125 places, 162 transitions, 1671 flow. Second operand 8 states and 130 transitions. [2024-06-27 20:47:12,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 182 transitions, 2120 flow [2024-06-27 20:47:12,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 182 transitions, 2073 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-06-27 20:47:12,406 INFO L231 Difference]: Finished difference. Result has 131 places, 167 transitions, 1726 flow [2024-06-27 20:47:12,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1726, PETRI_PLACES=131, PETRI_TRANSITIONS=167} [2024-06-27 20:47:12,407 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 90 predicate places. [2024-06-27 20:47:12,407 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 167 transitions, 1726 flow [2024-06-27 20:47:12,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:12,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:12,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:12,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:47:12,408 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:12,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash 475152387, now seen corresponding path program 1 times [2024-06-27 20:47:12,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:12,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259934775] [2024-06-27 20:47:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:12,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:13,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:13,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:13,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259934775] [2024-06-27 20:47:13,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259934775] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:13,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:13,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:13,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235694999] [2024-06-27 20:47:13,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:13,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:13,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:13,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:13,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:13,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:13,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 167 transitions, 1726 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:13,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:13,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:13,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:13,746 INFO L124 PetriNetUnfolderBase]: 1922/3012 cut-off events. [2024-06-27 20:47:13,746 INFO L125 PetriNetUnfolderBase]: For 57509/57509 co-relation queries the response was YES. [2024-06-27 20:47:13,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18031 conditions, 3012 events. 1922/3012 cut-off events. For 57509/57509 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15745 event pairs, 504 based on Foata normal form. 1/3010 useless extension candidates. Maximal degree in co-relation 17972. Up to 2921 conditions per place. [2024-06-27 20:47:13,774 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 158 selfloop transitions, 17 changer transitions 0/179 dead transitions. [2024-06-27 20:47:13,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 179 transitions, 2136 flow [2024-06-27 20:47:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:47:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:47:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 101 transitions. [2024-06-27 20:47:13,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42083333333333334 [2024-06-27 20:47:13,775 INFO L175 Difference]: Start difference. First operand has 131 places, 167 transitions, 1726 flow. Second operand 6 states and 101 transitions. [2024-06-27 20:47:13,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 179 transitions, 2136 flow [2024-06-27 20:47:13,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 179 transitions, 2097 flow, removed 5 selfloop flow, removed 4 redundant places. [2024-06-27 20:47:13,845 INFO L231 Difference]: Finished difference. Result has 133 places, 170 transitions, 1769 flow [2024-06-27 20:47:13,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1687, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1769, PETRI_PLACES=133, PETRI_TRANSITIONS=170} [2024-06-27 20:47:13,845 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 92 predicate places. [2024-06-27 20:47:13,845 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 170 transitions, 1769 flow [2024-06-27 20:47:13,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:13,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:13,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:13,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:47:13,846 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:13,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:13,846 INFO L85 PathProgramCache]: Analyzing trace with hash 2003711548, now seen corresponding path program 3 times [2024-06-27 20:47:13,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:13,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489264311] [2024-06-27 20:47:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:13,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:14,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:14,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489264311] [2024-06-27 20:47:14,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489264311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:14,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:14,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:14,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804669723] [2024-06-27 20:47:14,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:14,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:14,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:14,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:14,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:14,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 170 transitions, 1769 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:14,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:14,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:14,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:15,153 INFO L124 PetriNetUnfolderBase]: 1916/3004 cut-off events. [2024-06-27 20:47:15,153 INFO L125 PetriNetUnfolderBase]: For 59612/59612 co-relation queries the response was YES. [2024-06-27 20:47:15,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18299 conditions, 3004 events. 1916/3004 cut-off events. For 59612/59612 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15558 event pairs, 503 based on Foata normal form. 2/3003 useless extension candidates. Maximal degree in co-relation 18238. Up to 2911 conditions per place. [2024-06-27 20:47:15,174 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 162 selfloop transitions, 16 changer transitions 0/182 dead transitions. [2024-06-27 20:47:15,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 182 transitions, 2168 flow [2024-06-27 20:47:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:47:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:47:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-27 20:47:15,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 20:47:15,175 INFO L175 Difference]: Start difference. First operand has 133 places, 170 transitions, 1769 flow. Second operand 8 states and 124 transitions. [2024-06-27 20:47:15,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 182 transitions, 2168 flow [2024-06-27 20:47:15,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 182 transitions, 2118 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 20:47:15,250 INFO L231 Difference]: Finished difference. Result has 137 places, 171 transitions, 1768 flow [2024-06-27 20:47:15,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1721, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1768, PETRI_PLACES=137, PETRI_TRANSITIONS=171} [2024-06-27 20:47:15,250 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 96 predicate places. [2024-06-27 20:47:15,251 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 171 transitions, 1768 flow [2024-06-27 20:47:15,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:15,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:15,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:15,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:47:15,251 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:15,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:15,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1747397257, now seen corresponding path program 1 times [2024-06-27 20:47:15,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:15,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984329651] [2024-06-27 20:47:15,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:15,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:15,895 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 20:47:15,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:15,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984329651] [2024-06-27 20:47:15,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984329651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:15,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:15,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:15,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668242890] [2024-06-27 20:47:15,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:15,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:15,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:15,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:15,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:15,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:15,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 171 transitions, 1768 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:15,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:15,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:15,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:16,457 INFO L124 PetriNetUnfolderBase]: 1990/3118 cut-off events. [2024-06-27 20:47:16,457 INFO L125 PetriNetUnfolderBase]: For 66315/66318 co-relation queries the response was YES. [2024-06-27 20:47:16,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19241 conditions, 3118 events. 1990/3118 cut-off events. For 66315/66318 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 16250 event pairs, 481 based on Foata normal form. 6/3118 useless extension candidates. Maximal degree in co-relation 19179. Up to 2890 conditions per place. [2024-06-27 20:47:16,479 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 150 selfloop transitions, 49 changer transitions 0/203 dead transitions. [2024-06-27 20:47:16,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 203 transitions, 2485 flow [2024-06-27 20:47:16,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:16,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:16,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 20:47:16,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44642857142857145 [2024-06-27 20:47:16,481 INFO L175 Difference]: Start difference. First operand has 137 places, 171 transitions, 1768 flow. Second operand 7 states and 125 transitions. [2024-06-27 20:47:16,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 203 transitions, 2485 flow [2024-06-27 20:47:16,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 203 transitions, 2442 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:47:16,564 INFO L231 Difference]: Finished difference. Result has 139 places, 185 transitions, 2083 flow [2024-06-27 20:47:16,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1725, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2083, PETRI_PLACES=139, PETRI_TRANSITIONS=185} [2024-06-27 20:47:16,564 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 98 predicate places. [2024-06-27 20:47:16,565 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 185 transitions, 2083 flow [2024-06-27 20:47:16,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:16,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:16,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:16,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:47:16,565 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:16,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 431747841, now seen corresponding path program 2 times [2024-06-27 20:47:16,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:16,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061786612] [2024-06-27 20:47:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:16,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:17,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:17,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:17,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061786612] [2024-06-27 20:47:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061786612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:17,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:17,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:17,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143658575] [2024-06-27 20:47:17,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:17,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:17,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:17,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:17,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:17,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:17,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 185 transitions, 2083 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:17,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:17,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:17,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:17,690 INFO L124 PetriNetUnfolderBase]: 1978/3102 cut-off events. [2024-06-27 20:47:17,690 INFO L125 PetriNetUnfolderBase]: For 70979/70982 co-relation queries the response was YES. [2024-06-27 20:47:17,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19927 conditions, 3102 events. 1978/3102 cut-off events. For 70979/70982 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16188 event pairs, 479 based on Foata normal form. 6/3102 useless extension candidates. Maximal degree in co-relation 19863. Up to 2968 conditions per place. [2024-06-27 20:47:17,712 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 169 selfloop transitions, 22 changer transitions 0/195 dead transitions. [2024-06-27 20:47:17,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 195 transitions, 2511 flow [2024-06-27 20:47:17,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:47:17,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:47:17,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-27 20:47:17,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 20:47:17,714 INFO L175 Difference]: Start difference. First operand has 139 places, 185 transitions, 2083 flow. Second operand 6 states and 104 transitions. [2024-06-27 20:47:17,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 195 transitions, 2511 flow [2024-06-27 20:47:17,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 195 transitions, 2428 flow, removed 34 selfloop flow, removed 3 redundant places. [2024-06-27 20:47:17,801 INFO L231 Difference]: Finished difference. Result has 142 places, 185 transitions, 2054 flow [2024-06-27 20:47:17,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2054, PETRI_PLACES=142, PETRI_TRANSITIONS=185} [2024-06-27 20:47:17,801 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 101 predicate places. [2024-06-27 20:47:17,802 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 185 transitions, 2054 flow [2024-06-27 20:47:17,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:17,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:17,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:17,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:47:17,802 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:17,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:17,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1407369746, now seen corresponding path program 1 times [2024-06-27 20:47:17,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:17,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403643687] [2024-06-27 20:47:17,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:17,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:18,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:18,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403643687] [2024-06-27 20:47:18,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403643687] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:18,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:18,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:47:18,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222918957] [2024-06-27 20:47:18,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:18,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:47:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:47:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:47:19,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:19,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 185 transitions, 2054 flow. Second operand has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:19,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:19,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:19,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:19,741 INFO L124 PetriNetUnfolderBase]: 2097/3303 cut-off events. [2024-06-27 20:47:19,741 INFO L125 PetriNetUnfolderBase]: For 78170/78173 co-relation queries the response was YES. [2024-06-27 20:47:19,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21284 conditions, 3303 events. 2097/3303 cut-off events. For 78170/78173 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17535 event pairs, 488 based on Foata normal form. 14/3311 useless extension candidates. Maximal degree in co-relation 21219. Up to 2360 conditions per place. [2024-06-27 20:47:19,766 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 147 selfloop transitions, 76 changer transitions 0/227 dead transitions. [2024-06-27 20:47:19,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 227 transitions, 2874 flow [2024-06-27 20:47:19,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:47:19,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:47:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 170 transitions. [2024-06-27 20:47:19,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 20:47:19,767 INFO L175 Difference]: Start difference. First operand has 142 places, 185 transitions, 2054 flow. Second operand 9 states and 170 transitions. [2024-06-27 20:47:19,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 227 transitions, 2874 flow [2024-06-27 20:47:19,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 227 transitions, 2832 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 20:47:19,855 INFO L231 Difference]: Finished difference. Result has 148 places, 188 transitions, 2278 flow [2024-06-27 20:47:19,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2012, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2278, PETRI_PLACES=148, PETRI_TRANSITIONS=188} [2024-06-27 20:47:19,856 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 107 predicate places. [2024-06-27 20:47:19,856 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 188 transitions, 2278 flow [2024-06-27 20:47:19,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.363636363636363) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:19,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:19,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:19,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:47:19,857 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:19,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:19,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1407608756, now seen corresponding path program 2 times [2024-06-27 20:47:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:19,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077506589] [2024-06-27 20:47:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:21,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:21,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:21,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077506589] [2024-06-27 20:47:21,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077506589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:21,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:21,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:47:21,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666017670] [2024-06-27 20:47:21,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:21,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:47:21,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:21,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:47:21,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:47:21,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:21,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 188 transitions, 2278 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:21,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:21,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:21,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:22,110 INFO L124 PetriNetUnfolderBase]: 2172/3428 cut-off events. [2024-06-27 20:47:22,111 INFO L125 PetriNetUnfolderBase]: For 89655/89658 co-relation queries the response was YES. [2024-06-27 20:47:22,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22649 conditions, 3428 events. 2172/3428 cut-off events. For 89655/89658 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 18531 event pairs, 535 based on Foata normal form. 18/3440 useless extension candidates. Maximal degree in co-relation 22582. Up to 2938 conditions per place. [2024-06-27 20:47:22,139 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 150 selfloop transitions, 72 changer transitions 0/226 dead transitions. [2024-06-27 20:47:22,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 226 transitions, 2938 flow [2024-06-27 20:47:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:47:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:47:22,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 180 transitions. [2024-06-27 20:47:22,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 20:47:22,140 INFO L175 Difference]: Start difference. First operand has 148 places, 188 transitions, 2278 flow. Second operand 10 states and 180 transitions. [2024-06-27 20:47:22,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 226 transitions, 2938 flow [2024-06-27 20:47:22,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 226 transitions, 2859 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-27 20:47:22,249 INFO L231 Difference]: Finished difference. Result has 154 places, 190 transitions, 2415 flow [2024-06-27 20:47:22,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2199, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2415, PETRI_PLACES=154, PETRI_TRANSITIONS=190} [2024-06-27 20:47:22,250 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-27 20:47:22,250 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 190 transitions, 2415 flow [2024-06-27 20:47:22,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:22,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:22,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:22,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:47:22,251 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:22,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:22,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1218449742, now seen corresponding path program 3 times [2024-06-27 20:47:22,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:22,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172477899] [2024-06-27 20:47:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:22,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:22,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:23,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:23,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172477899] [2024-06-27 20:47:23,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172477899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:23,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:23,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:47:23,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044567333] [2024-06-27 20:47:23,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:23,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:47:23,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:23,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:47:23,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:47:23,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:23,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 190 transitions, 2415 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:23,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:23,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:23,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:24,629 INFO L124 PetriNetUnfolderBase]: 2144/3384 cut-off events. [2024-06-27 20:47:24,630 INFO L125 PetriNetUnfolderBase]: For 89096/89099 co-relation queries the response was YES. [2024-06-27 20:47:24,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22337 conditions, 3384 events. 2144/3384 cut-off events. For 89096/89099 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 18247 event pairs, 524 based on Foata normal form. 18/3396 useless extension candidates. Maximal degree in co-relation 22268. Up to 2829 conditions per place. [2024-06-27 20:47:24,656 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 143 selfloop transitions, 80 changer transitions 0/227 dead transitions. [2024-06-27 20:47:24,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 227 transitions, 3042 flow [2024-06-27 20:47:24,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:47:24,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:47:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 20:47:24,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455 [2024-06-27 20:47:24,659 INFO L175 Difference]: Start difference. First operand has 154 places, 190 transitions, 2415 flow. Second operand 10 states and 182 transitions. [2024-06-27 20:47:24,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 227 transitions, 3042 flow [2024-06-27 20:47:24,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 227 transitions, 2876 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 20:47:24,794 INFO L231 Difference]: Finished difference. Result has 156 places, 191 transitions, 2444 flow [2024-06-27 20:47:24,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2444, PETRI_PLACES=156, PETRI_TRANSITIONS=191} [2024-06-27 20:47:24,794 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 115 predicate places. [2024-06-27 20:47:24,795 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 191 transitions, 2444 flow [2024-06-27 20:47:24,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:24,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:24,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:24,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:47:24,795 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:24,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:24,795 INFO L85 PathProgramCache]: Analyzing trace with hash 431756769, now seen corresponding path program 1 times [2024-06-27 20:47:24,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:24,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906171364] [2024-06-27 20:47:24,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:24,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:25,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:25,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:25,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906171364] [2024-06-27 20:47:25,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906171364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:25,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:25,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:25,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742381826] [2024-06-27 20:47:25,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:25,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:25,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:25,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:25,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:25,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 191 transitions, 2444 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:25,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:25,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:25,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:26,201 INFO L124 PetriNetUnfolderBase]: 2188/3453 cut-off events. [2024-06-27 20:47:26,201 INFO L125 PetriNetUnfolderBase]: For 91817/91817 co-relation queries the response was YES. [2024-06-27 20:47:26,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22683 conditions, 3453 events. 2188/3453 cut-off events. For 91817/91817 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18680 event pairs, 534 based on Foata normal form. 12/3457 useless extension candidates. Maximal degree in co-relation 22613. Up to 3243 conditions per place. [2024-06-27 20:47:26,227 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 182 selfloop transitions, 23 changer transitions 0/209 dead transitions. [2024-06-27 20:47:26,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 209 transitions, 2980 flow [2024-06-27 20:47:26,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:47:26,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:47:26,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-06-27 20:47:26,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45416666666666666 [2024-06-27 20:47:26,228 INFO L175 Difference]: Start difference. First operand has 156 places, 191 transitions, 2444 flow. Second operand 6 states and 109 transitions. [2024-06-27 20:47:26,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 209 transitions, 2980 flow [2024-06-27 20:47:26,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 209 transitions, 2813 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 20:47:26,349 INFO L231 Difference]: Finished difference. Result has 154 places, 192 transitions, 2345 flow [2024-06-27 20:47:26,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2345, PETRI_PLACES=154, PETRI_TRANSITIONS=192} [2024-06-27 20:47:26,349 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 113 predicate places. [2024-06-27 20:47:26,349 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 192 transitions, 2345 flow [2024-06-27 20:47:26,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:26,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:26,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:26,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:47:26,350 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:26,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:26,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1548095467, now seen corresponding path program 3 times [2024-06-27 20:47:26,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:26,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82652111] [2024-06-27 20:47:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:26,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:26,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:26,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82652111] [2024-06-27 20:47:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82652111] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:26,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:26,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:26,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32266] [2024-06-27 20:47:26,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:26,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:26,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:26,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:27,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:27,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 192 transitions, 2345 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:27,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:27,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:27,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:27,599 INFO L124 PetriNetUnfolderBase]: 2208/3480 cut-off events. [2024-06-27 20:47:27,600 INFO L125 PetriNetUnfolderBase]: For 91899/91902 co-relation queries the response was YES. [2024-06-27 20:47:27,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22821 conditions, 3480 events. 2208/3480 cut-off events. For 91899/91902 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 18882 event pairs, 540 based on Foata normal form. 6/3480 useless extension candidates. Maximal degree in co-relation 22750. Up to 3286 conditions per place. [2024-06-27 20:47:27,637 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 170 selfloop transitions, 39 changer transitions 0/213 dead transitions. [2024-06-27 20:47:27,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 213 transitions, 2895 flow [2024-06-27 20:47:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 20:47:27,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-27 20:47:27,639 INFO L175 Difference]: Start difference. First operand has 154 places, 192 transitions, 2345 flow. Second operand 7 states and 124 transitions. [2024-06-27 20:47:27,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 213 transitions, 2895 flow [2024-06-27 20:47:27,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 213 transitions, 2853 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-27 20:47:27,761 INFO L231 Difference]: Finished difference. Result has 157 places, 195 transitions, 2446 flow [2024-06-27 20:47:27,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2303, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2446, PETRI_PLACES=157, PETRI_TRANSITIONS=195} [2024-06-27 20:47:27,762 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 116 predicate places. [2024-06-27 20:47:27,762 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 195 transitions, 2446 flow [2024-06-27 20:47:27,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:27,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:27,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:27,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:47:27,762 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:27,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:27,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1535715307, now seen corresponding path program 4 times [2024-06-27 20:47:27,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:27,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062544957] [2024-06-27 20:47:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:27,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:27,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:28,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:28,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:28,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062544957] [2024-06-27 20:47:28,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062544957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:28,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:28,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:28,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360724848] [2024-06-27 20:47:28,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:28,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:28,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:28,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:28,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 195 transitions, 2446 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:28,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:28,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:28,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:28,936 INFO L124 PetriNetUnfolderBase]: 2252/3553 cut-off events. [2024-06-27 20:47:28,936 INFO L125 PetriNetUnfolderBase]: For 99675/99678 co-relation queries the response was YES. [2024-06-27 20:47:28,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23911 conditions, 3553 events. 2252/3553 cut-off events. For 99675/99678 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 19355 event pairs, 543 based on Foata normal form. 6/3553 useless extension candidates. Maximal degree in co-relation 23839. Up to 3242 conditions per place. [2024-06-27 20:47:28,964 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 159 selfloop transitions, 60 changer transitions 0/223 dead transitions. [2024-06-27 20:47:28,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 223 transitions, 3198 flow [2024-06-27 20:47:28,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 20:47:28,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45357142857142857 [2024-06-27 20:47:28,965 INFO L175 Difference]: Start difference. First operand has 157 places, 195 transitions, 2446 flow. Second operand 7 states and 127 transitions. [2024-06-27 20:47:28,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 223 transitions, 3198 flow [2024-06-27 20:47:29,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 223 transitions, 3027 flow, removed 32 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:29,090 INFO L231 Difference]: Finished difference. Result has 160 places, 204 transitions, 2569 flow [2024-06-27 20:47:29,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2275, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2569, PETRI_PLACES=160, PETRI_TRANSITIONS=204} [2024-06-27 20:47:29,091 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 119 predicate places. [2024-06-27 20:47:29,091 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 204 transitions, 2569 flow [2024-06-27 20:47:29,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:29,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:29,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:29,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:47:29,092 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:29,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:29,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1791168077, now seen corresponding path program 5 times [2024-06-27 20:47:29,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:29,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183049556] [2024-06-27 20:47:29,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:29,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:29,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:29,642 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 20:47:29,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:29,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183049556] [2024-06-27 20:47:29,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183049556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:29,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:29,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:29,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165400401] [2024-06-27 20:47:29,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:29,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:29,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:29,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:29,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:29,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:29,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 204 transitions, 2569 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:29,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:29,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:29,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:30,346 INFO L124 PetriNetUnfolderBase]: 2272/3585 cut-off events. [2024-06-27 20:47:30,346 INFO L125 PetriNetUnfolderBase]: For 107351/107354 co-relation queries the response was YES. [2024-06-27 20:47:30,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24741 conditions, 3585 events. 2272/3585 cut-off events. For 107351/107354 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 19561 event pairs, 552 based on Foata normal form. 6/3585 useless extension candidates. Maximal degree in co-relation 24668. Up to 3438 conditions per place. [2024-06-27 20:47:30,375 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 192 selfloop transitions, 22 changer transitions 0/218 dead transitions. [2024-06-27 20:47:30,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 218 transitions, 3113 flow [2024-06-27 20:47:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 20:47:30,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4142857142857143 [2024-06-27 20:47:30,377 INFO L175 Difference]: Start difference. First operand has 160 places, 204 transitions, 2569 flow. Second operand 7 states and 116 transitions. [2024-06-27 20:47:30,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 218 transitions, 3113 flow [2024-06-27 20:47:30,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 218 transitions, 3022 flow, removed 33 selfloop flow, removed 3 redundant places. [2024-06-27 20:47:30,518 INFO L231 Difference]: Finished difference. Result has 164 places, 207 transitions, 2598 flow [2024-06-27 20:47:30,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2598, PETRI_PLACES=164, PETRI_TRANSITIONS=207} [2024-06-27 20:47:30,519 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 123 predicate places. [2024-06-27 20:47:30,519 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 207 transitions, 2598 flow [2024-06-27 20:47:30,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:30,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:30,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:30,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:47:30,520 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:30,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:30,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1985509121, now seen corresponding path program 6 times [2024-06-27 20:47:30,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:30,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020838098] [2024-06-27 20:47:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:30,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:31,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:31,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020838098] [2024-06-27 20:47:31,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020838098] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:31,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:31,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:31,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165716741] [2024-06-27 20:47:31,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:31,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:31,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:31,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:31,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:31,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:31,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 207 transitions, 2598 flow. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:31,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:31,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:31,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:31,721 INFO L124 PetriNetUnfolderBase]: 2260/3563 cut-off events. [2024-06-27 20:47:31,721 INFO L125 PetriNetUnfolderBase]: For 103092/103095 co-relation queries the response was YES. [2024-06-27 20:47:31,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24114 conditions, 3563 events. 2260/3563 cut-off events. For 103092/103095 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 19411 event pairs, 536 based on Foata normal form. 6/3563 useless extension candidates. Maximal degree in co-relation 24039. Up to 3386 conditions per place. [2024-06-27 20:47:31,751 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 186 selfloop transitions, 30 changer transitions 0/220 dead transitions. [2024-06-27 20:47:31,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 220 transitions, 3108 flow [2024-06-27 20:47:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 20:47:31,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:47:31,752 INFO L175 Difference]: Start difference. First operand has 164 places, 207 transitions, 2598 flow. Second operand 7 states and 119 transitions. [2024-06-27 20:47:31,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 220 transitions, 3108 flow [2024-06-27 20:47:31,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 220 transitions, 2976 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:31,887 INFO L231 Difference]: Finished difference. Result has 166 places, 207 transitions, 2532 flow [2024-06-27 20:47:31,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2532, PETRI_PLACES=166, PETRI_TRANSITIONS=207} [2024-06-27 20:47:31,887 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-27 20:47:31,887 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 207 transitions, 2532 flow [2024-06-27 20:47:31,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:31,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:31,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:31,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:47:31,888 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:31,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:31,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1979804129, now seen corresponding path program 2 times [2024-06-27 20:47:31,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:31,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113668678] [2024-06-27 20:47:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:31,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:32,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:32,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113668678] [2024-06-27 20:47:32,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113668678] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:32,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:32,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:32,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943312957] [2024-06-27 20:47:32,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:32,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:32,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:32,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:32,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 207 transitions, 2532 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:32,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:32,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:32,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:33,405 INFO L124 PetriNetUnfolderBase]: 2304/3634 cut-off events. [2024-06-27 20:47:33,405 INFO L125 PetriNetUnfolderBase]: For 111513/111513 co-relation queries the response was YES. [2024-06-27 20:47:33,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24503 conditions, 3634 events. 2304/3634 cut-off events. For 111513/111513 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19888 event pairs, 556 based on Foata normal form. 12/3638 useless extension candidates. Maximal degree in co-relation 24428. Up to 3402 conditions per place. [2024-06-27 20:47:33,436 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 199 selfloop transitions, 25 changer transitions 0/228 dead transitions. [2024-06-27 20:47:33,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 228 transitions, 3148 flow [2024-06-27 20:47:33,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:33,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 20:47:33,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-27 20:47:33,437 INFO L175 Difference]: Start difference. First operand has 166 places, 207 transitions, 2532 flow. Second operand 7 states and 123 transitions. [2024-06-27 20:47:33,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 228 transitions, 3148 flow [2024-06-27 20:47:33,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 228 transitions, 2990 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 20:47:33,647 INFO L231 Difference]: Finished difference. Result has 166 places, 208 transitions, 2445 flow [2024-06-27 20:47:33,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2445, PETRI_PLACES=166, PETRI_TRANSITIONS=208} [2024-06-27 20:47:33,647 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 125 predicate places. [2024-06-27 20:47:33,648 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 208 transitions, 2445 flow [2024-06-27 20:47:33,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:33,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:33,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:33,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:47:33,648 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:33,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:33,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1994088929, now seen corresponding path program 3 times [2024-06-27 20:47:33,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:33,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157128130] [2024-06-27 20:47:33,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:33,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:34,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:34,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157128130] [2024-06-27 20:47:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157128130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:34,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:34,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:47:34,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193724378] [2024-06-27 20:47:34,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:34,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:47:34,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:34,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:47:34,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:47:34,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:34,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 208 transitions, 2445 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:34,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:34,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:34,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:35,147 INFO L124 PetriNetUnfolderBase]: 2306/3640 cut-off events. [2024-06-27 20:47:35,147 INFO L125 PetriNetUnfolderBase]: For 111008/111008 co-relation queries the response was YES. [2024-06-27 20:47:35,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24326 conditions, 3640 events. 2306/3640 cut-off events. For 111008/111008 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19911 event pairs, 546 based on Foata normal form. 8/3640 useless extension candidates. Maximal degree in co-relation 24251. Up to 3318 conditions per place. [2024-06-27 20:47:35,175 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 200 selfloop transitions, 27 changer transitions 0/231 dead transitions. [2024-06-27 20:47:35,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 231 transitions, 3089 flow [2024-06-27 20:47:35,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:35,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 20:47:35,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-27 20:47:35,176 INFO L175 Difference]: Start difference. First operand has 166 places, 208 transitions, 2445 flow. Second operand 7 states and 124 transitions. [2024-06-27 20:47:35,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 231 transitions, 3089 flow [2024-06-27 20:47:35,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 231 transitions, 3036 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:35,307 INFO L231 Difference]: Finished difference. Result has 168 places, 209 transitions, 2468 flow [2024-06-27 20:47:35,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2468, PETRI_PLACES=168, PETRI_TRANSITIONS=209} [2024-06-27 20:47:35,307 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 127 predicate places. [2024-06-27 20:47:35,307 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 209 transitions, 2468 flow [2024-06-27 20:47:35,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:35,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:35,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:35,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:47:35,308 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:35,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:35,308 INFO L85 PathProgramCache]: Analyzing trace with hash -130533887, now seen corresponding path program 1 times [2024-06-27 20:47:35,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:35,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800711046] [2024-06-27 20:47:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:35,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:36,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:36,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:36,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800711046] [2024-06-27 20:47:36,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800711046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:36,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:36,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:36,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778858992] [2024-06-27 20:47:36,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:36,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:36,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:36,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:36,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 209 transitions, 2468 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:36,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:36,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:36,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:36,931 INFO L124 PetriNetUnfolderBase]: 2366/3727 cut-off events. [2024-06-27 20:47:36,931 INFO L125 PetriNetUnfolderBase]: For 120050/120053 co-relation queries the response was YES. [2024-06-27 20:47:36,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25044 conditions, 3727 events. 2366/3727 cut-off events. For 120050/120053 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 20452 event pairs, 566 based on Foata normal form. 14/3735 useless extension candidates. Maximal degree in co-relation 24968. Up to 3320 conditions per place. [2024-06-27 20:47:36,975 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 173 selfloop transitions, 59 changer transitions 0/236 dead transitions. [2024-06-27 20:47:36,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 236 transitions, 3104 flow [2024-06-27 20:47:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:47:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:47:36,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 20:47:36,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-27 20:47:36,976 INFO L175 Difference]: Start difference. First operand has 168 places, 209 transitions, 2468 flow. Second operand 8 states and 146 transitions. [2024-06-27 20:47:36,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 236 transitions, 3104 flow [2024-06-27 20:47:37,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 236 transitions, 3044 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:37,126 INFO L231 Difference]: Finished difference. Result has 171 places, 214 transitions, 2624 flow [2024-06-27 20:47:37,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2408, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2624, PETRI_PLACES=171, PETRI_TRANSITIONS=214} [2024-06-27 20:47:37,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 130 predicate places. [2024-06-27 20:47:37,127 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 214 transitions, 2624 flow [2024-06-27 20:47:37,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:37,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:37,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:37,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:47:37,129 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:37,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:37,130 INFO L85 PathProgramCache]: Analyzing trace with hash -130413917, now seen corresponding path program 2 times [2024-06-27 20:47:37,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:37,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74209847] [2024-06-27 20:47:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:37,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:37,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:37,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:37,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74209847] [2024-06-27 20:47:37,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74209847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:37,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:37,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:37,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357351253] [2024-06-27 20:47:37,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:37,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:37,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:37,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:37,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:38,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:38,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 214 transitions, 2624 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:38,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:38,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:38,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:38,625 INFO L124 PetriNetUnfolderBase]: 2402/3776 cut-off events. [2024-06-27 20:47:38,626 INFO L125 PetriNetUnfolderBase]: For 123782/123782 co-relation queries the response was YES. [2024-06-27 20:47:38,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26289 conditions, 3776 events. 2402/3776 cut-off events. For 123782/123782 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20743 event pairs, 573 based on Foata normal form. 4/3777 useless extension candidates. Maximal degree in co-relation 26212. Up to 3542 conditions per place. [2024-06-27 20:47:38,658 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 209 selfloop transitions, 37 changer transitions 0/250 dead transitions. [2024-06-27 20:47:38,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 250 transitions, 3478 flow [2024-06-27 20:47:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:47:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:47:38,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 20:47:38,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 20:47:38,660 INFO L175 Difference]: Start difference. First operand has 171 places, 214 transitions, 2624 flow. Second operand 8 states and 144 transitions. [2024-06-27 20:47:38,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 250 transitions, 3478 flow [2024-06-27 20:47:38,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 250 transitions, 3284 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 20:47:38,836 INFO L231 Difference]: Finished difference. Result has 175 places, 225 transitions, 2712 flow [2024-06-27 20:47:38,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2712, PETRI_PLACES=175, PETRI_TRANSITIONS=225} [2024-06-27 20:47:38,837 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 134 predicate places. [2024-06-27 20:47:38,837 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 225 transitions, 2712 flow [2024-06-27 20:47:38,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:38,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:38,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:38,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:47:38,837 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:38,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:38,838 INFO L85 PathProgramCache]: Analyzing trace with hash -125765343, now seen corresponding path program 1 times [2024-06-27 20:47:38,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:38,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5463991] [2024-06-27 20:47:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:38,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:39,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:39,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:39,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5463991] [2024-06-27 20:47:39,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5463991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:39,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:39,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:39,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409852209] [2024-06-27 20:47:39,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:39,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:39,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:39,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:39,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:39,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:39,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 225 transitions, 2712 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:39,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:39,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:39,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:40,365 INFO L124 PetriNetUnfolderBase]: 2410/3786 cut-off events. [2024-06-27 20:47:40,365 INFO L125 PetriNetUnfolderBase]: For 128676/128676 co-relation queries the response was YES. [2024-06-27 20:47:40,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26566 conditions, 3786 events. 2410/3786 cut-off events. For 128676/128676 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20783 event pairs, 577 based on Foata normal form. 2/3785 useless extension candidates. Maximal degree in co-relation 26486. Up to 3657 conditions per place. [2024-06-27 20:47:40,394 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 219 selfloop transitions, 19 changer transitions 0/242 dead transitions. [2024-06-27 20:47:40,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 242 transitions, 3278 flow [2024-06-27 20:47:40,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 20:47:40,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:47:40,395 INFO L175 Difference]: Start difference. First operand has 175 places, 225 transitions, 2712 flow. Second operand 7 states and 119 transitions. [2024-06-27 20:47:40,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 242 transitions, 3278 flow [2024-06-27 20:47:40,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 242 transitions, 3215 flow, removed 22 selfloop flow, removed 3 redundant places. [2024-06-27 20:47:40,593 INFO L231 Difference]: Finished difference. Result has 179 places, 227 transitions, 2730 flow [2024-06-27 20:47:40,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2649, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2730, PETRI_PLACES=179, PETRI_TRANSITIONS=227} [2024-06-27 20:47:40,593 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 138 predicate places. [2024-06-27 20:47:40,593 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 227 transitions, 2730 flow [2024-06-27 20:47:40,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:40,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:40,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:40,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:47:40,594 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:40,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:40,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1535707371, now seen corresponding path program 3 times [2024-06-27 20:47:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:40,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257535286] [2024-06-27 20:47:40,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:40,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:41,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:41,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:41,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257535286] [2024-06-27 20:47:41,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257535286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:41,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:41,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:41,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603827595] [2024-06-27 20:47:41,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:41,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:41,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:41,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:41,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:41,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 227 transitions, 2730 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:41,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:41,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:41,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:42,096 INFO L124 PetriNetUnfolderBase]: 2430/3814 cut-off events. [2024-06-27 20:47:42,097 INFO L125 PetriNetUnfolderBase]: For 135285/135285 co-relation queries the response was YES. [2024-06-27 20:47:42,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26914 conditions, 3814 events. 2430/3814 cut-off events. For 135285/135285 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 20950 event pairs, 577 based on Foata normal form. 4/3815 useless extension candidates. Maximal degree in co-relation 26832. Up to 3667 conditions per place. [2024-06-27 20:47:42,131 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 221 selfloop transitions, 23 changer transitions 0/248 dead transitions. [2024-06-27 20:47:42,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 248 transitions, 3343 flow [2024-06-27 20:47:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:47:42,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:47:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 20:47:42,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 20:47:42,133 INFO L175 Difference]: Start difference. First operand has 179 places, 227 transitions, 2730 flow. Second operand 8 states and 135 transitions. [2024-06-27 20:47:42,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 248 transitions, 3343 flow [2024-06-27 20:47:42,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 248 transitions, 3278 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:42,315 INFO L231 Difference]: Finished difference. Result has 182 places, 230 transitions, 2766 flow [2024-06-27 20:47:42,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2665, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2766, PETRI_PLACES=182, PETRI_TRANSITIONS=230} [2024-06-27 20:47:42,315 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 141 predicate places. [2024-06-27 20:47:42,315 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 230 transitions, 2766 flow [2024-06-27 20:47:42,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:42,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:42,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:42,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:47:42,316 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:42,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:42,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1844585955, now seen corresponding path program 4 times [2024-06-27 20:47:42,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:42,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953570161] [2024-06-27 20:47:42,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:42,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:43,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:43,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:43,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953570161] [2024-06-27 20:47:43,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953570161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:43,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:43,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:43,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649088469] [2024-06-27 20:47:43,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:43,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:43,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:43,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:43,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:43,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:43,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 230 transitions, 2766 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:43,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:43,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:43,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:43,772 INFO L124 PetriNetUnfolderBase]: 2418/3800 cut-off events. [2024-06-27 20:47:43,772 INFO L125 PetriNetUnfolderBase]: For 137487/137487 co-relation queries the response was YES. [2024-06-27 20:47:43,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26789 conditions, 3800 events. 2418/3800 cut-off events. For 137487/137487 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20892 event pairs, 586 based on Foata normal form. 4/3801 useless extension candidates. Maximal degree in co-relation 26706. Up to 3666 conditions per place. [2024-06-27 20:47:43,805 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 223 selfloop transitions, 18 changer transitions 0/245 dead transitions. [2024-06-27 20:47:43,805 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 245 transitions, 3325 flow [2024-06-27 20:47:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:47:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:47:43,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 20:47:43,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 20:47:43,806 INFO L175 Difference]: Start difference. First operand has 182 places, 230 transitions, 2766 flow. Second operand 8 states and 129 transitions. [2024-06-27 20:47:43,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 245 transitions, 3325 flow [2024-06-27 20:47:44,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 245 transitions, 3231 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 20:47:44,015 INFO L231 Difference]: Finished difference. Result has 184 places, 231 transitions, 2731 flow [2024-06-27 20:47:44,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2731, PETRI_PLACES=184, PETRI_TRANSITIONS=231} [2024-06-27 20:47:44,016 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 143 predicate places. [2024-06-27 20:47:44,016 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 231 transitions, 2731 flow [2024-06-27 20:47:44,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:44,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:44,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:44,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:47:44,016 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:44,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:44,017 INFO L85 PathProgramCache]: Analyzing trace with hash -719594207, now seen corresponding path program 1 times [2024-06-27 20:47:44,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:44,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460668612] [2024-06-27 20:47:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:44,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:44,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:44,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460668612] [2024-06-27 20:47:44,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460668612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:44,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:44,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:44,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320882980] [2024-06-27 20:47:44,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:44,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:44,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:44,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:44,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:44,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:44,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 231 transitions, 2731 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:44,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:44,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:44,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:45,637 INFO L124 PetriNetUnfolderBase]: 2415/3794 cut-off events. [2024-06-27 20:47:45,637 INFO L125 PetriNetUnfolderBase]: For 138960/138960 co-relation queries the response was YES. [2024-06-27 20:47:45,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26707 conditions, 3794 events. 2415/3794 cut-off events. For 138960/138960 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 20801 event pairs, 587 based on Foata normal form. 1/3792 useless extension candidates. Maximal degree in co-relation 26623. Up to 3669 conditions per place. [2024-06-27 20:47:45,666 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 218 selfloop transitions, 23 changer transitions 0/245 dead transitions. [2024-06-27 20:47:45,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 245 transitions, 3299 flow [2024-06-27 20:47:45,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:45,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:45,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 20:47:45,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4107142857142857 [2024-06-27 20:47:45,668 INFO L175 Difference]: Start difference. First operand has 184 places, 231 transitions, 2731 flow. Second operand 7 states and 115 transitions. [2024-06-27 20:47:45,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 245 transitions, 3299 flow [2024-06-27 20:47:45,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 245 transitions, 3251 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 20:47:45,905 INFO L231 Difference]: Finished difference. Result has 185 places, 234 transitions, 2789 flow [2024-06-27 20:47:45,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2789, PETRI_PLACES=185, PETRI_TRANSITIONS=234} [2024-06-27 20:47:45,906 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 144 predicate places. [2024-06-27 20:47:45,906 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 234 transitions, 2789 flow [2024-06-27 20:47:45,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:45,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:45,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:45,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:47:45,906 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:45,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:45,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1993798211, now seen corresponding path program 2 times [2024-06-27 20:47:45,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:45,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538082964] [2024-06-27 20:47:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:45,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:46,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:46,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538082964] [2024-06-27 20:47:46,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538082964] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:46,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:46,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:46,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227873516] [2024-06-27 20:47:46,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:46,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:46,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:46,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:46,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:46,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:46,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 234 transitions, 2789 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:46,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:46,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:46,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:47,504 INFO L124 PetriNetUnfolderBase]: 2423/3808 cut-off events. [2024-06-27 20:47:47,504 INFO L125 PetriNetUnfolderBase]: For 145317/145317 co-relation queries the response was YES. [2024-06-27 20:47:47,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27174 conditions, 3808 events. 2423/3808 cut-off events. For 145317/145317 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 20920 event pairs, 591 based on Foata normal form. 2/3807 useless extension candidates. Maximal degree in co-relation 27089. Up to 3684 conditions per place. [2024-06-27 20:47:47,542 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 224 selfloop transitions, 19 changer transitions 0/247 dead transitions. [2024-06-27 20:47:47,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 247 transitions, 3351 flow [2024-06-27 20:47:47,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:47,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:47,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 114 transitions. [2024-06-27 20:47:47,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2024-06-27 20:47:47,543 INFO L175 Difference]: Start difference. First operand has 185 places, 234 transitions, 2789 flow. Second operand 7 states and 114 transitions. [2024-06-27 20:47:47,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 247 transitions, 3351 flow [2024-06-27 20:47:47,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 247 transitions, 3285 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:47,723 INFO L231 Difference]: Finished difference. Result has 187 places, 236 transitions, 2811 flow [2024-06-27 20:47:47,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2723, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2811, PETRI_PLACES=187, PETRI_TRANSITIONS=236} [2024-06-27 20:47:47,724 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 146 predicate places. [2024-06-27 20:47:47,724 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 236 transitions, 2811 flow [2024-06-27 20:47:47,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:47,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:47,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:47,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:47:47,724 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:47,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:47,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1994094881, now seen corresponding path program 3 times [2024-06-27 20:47:47,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:47,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464178034] [2024-06-27 20:47:47,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:47,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:48,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:48,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464178034] [2024-06-27 20:47:48,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464178034] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:48,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:48,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:48,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392223109] [2024-06-27 20:47:48,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:48,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:48,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:48,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 236 transitions, 2811 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:48,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:48,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:48,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:49,294 INFO L124 PetriNetUnfolderBase]: 2418/3799 cut-off events. [2024-06-27 20:47:49,295 INFO L125 PetriNetUnfolderBase]: For 149382/149382 co-relation queries the response was YES. [2024-06-27 20:47:49,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27251 conditions, 3799 events. 2418/3799 cut-off events. For 149382/149382 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 20824 event pairs, 584 based on Foata normal form. 2/3798 useless extension candidates. Maximal degree in co-relation 27165. Up to 3680 conditions per place. [2024-06-27 20:47:49,328 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 230 selfloop transitions, 15 changer transitions 0/249 dead transitions. [2024-06-27 20:47:49,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 249 transitions, 3375 flow [2024-06-27 20:47:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:49,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-06-27 20:47:49,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2024-06-27 20:47:49,329 INFO L175 Difference]: Start difference. First operand has 187 places, 236 transitions, 2811 flow. Second operand 7 states and 113 transitions. [2024-06-27 20:47:49,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 249 transitions, 3375 flow [2024-06-27 20:47:49,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 249 transitions, 3305 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:49,509 INFO L231 Difference]: Finished difference. Result has 189 places, 238 transitions, 2824 flow [2024-06-27 20:47:49,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2824, PETRI_PLACES=189, PETRI_TRANSITIONS=238} [2024-06-27 20:47:49,509 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 148 predicate places. [2024-06-27 20:47:49,509 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 238 transitions, 2824 flow [2024-06-27 20:47:49,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:49,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:49,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:49,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:47:49,510 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:49,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:49,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1471678079, now seen corresponding path program 1 times [2024-06-27 20:47:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455303780] [2024-06-27 20:47:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:49,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:50,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:50,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455303780] [2024-06-27 20:47:50,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455303780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:50,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:50,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:50,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881131924] [2024-06-27 20:47:50,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:50,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:50,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:50,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:50,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:50,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:50,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 238 transitions, 2824 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:50,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:50,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:50,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:51,077 INFO L124 PetriNetUnfolderBase]: 2452/3844 cut-off events. [2024-06-27 20:47:51,078 INFO L125 PetriNetUnfolderBase]: For 159663/159663 co-relation queries the response was YES. [2024-06-27 20:47:51,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28024 conditions, 3844 events. 2452/3844 cut-off events. For 159663/159663 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 21102 event pairs, 556 based on Foata normal form. 2/3838 useless extension candidates. Maximal degree in co-relation 27937. Up to 3540 conditions per place. [2024-06-27 20:47:51,117 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 196 selfloop transitions, 65 changer transitions 0/265 dead transitions. [2024-06-27 20:47:51,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 265 transitions, 3718 flow [2024-06-27 20:47:51,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:51,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:51,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 20:47:51,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 20:47:51,118 INFO L175 Difference]: Start difference. First operand has 189 places, 238 transitions, 2824 flow. Second operand 7 states and 128 transitions. [2024-06-27 20:47:51,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 265 transitions, 3718 flow [2024-06-27 20:47:51,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 265 transitions, 3651 flow, removed 20 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:51,351 INFO L231 Difference]: Finished difference. Result has 191 places, 244 transitions, 3057 flow [2024-06-27 20:47:51,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3057, PETRI_PLACES=191, PETRI_TRANSITIONS=244} [2024-06-27 20:47:51,352 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 150 predicate places. [2024-06-27 20:47:51,352 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 244 transitions, 3057 flow [2024-06-27 20:47:51,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:51,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:51,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:51,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:47:51,353 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:51,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:51,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1530148117, now seen corresponding path program 2 times [2024-06-27 20:47:51,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:51,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421659318] [2024-06-27 20:47:51,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:51,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:52,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:52,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:52,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421659318] [2024-06-27 20:47:52,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421659318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:52,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:52,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:47:52,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906220855] [2024-06-27 20:47:52,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:52,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:47:52,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:52,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:47:52,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:47:52,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:52,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 244 transitions, 3057 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:52,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:52,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:52,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:53,127 INFO L124 PetriNetUnfolderBase]: 2443/3838 cut-off events. [2024-06-27 20:47:53,127 INFO L125 PetriNetUnfolderBase]: For 166061/166061 co-relation queries the response was YES. [2024-06-27 20:47:53,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28341 conditions, 3838 events. 2443/3838 cut-off events. For 166061/166061 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 21095 event pairs, 573 based on Foata normal form. 3/3833 useless extension candidates. Maximal degree in co-relation 28253. Up to 3634 conditions per place. [2024-06-27 20:47:53,165 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 221 selfloop transitions, 32 changer transitions 0/257 dead transitions. [2024-06-27 20:47:53,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 257 transitions, 3649 flow [2024-06-27 20:47:53,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:47:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:47:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 107 transitions. [2024-06-27 20:47:53,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44583333333333336 [2024-06-27 20:47:53,166 INFO L175 Difference]: Start difference. First operand has 191 places, 244 transitions, 3057 flow. Second operand 6 states and 107 transitions. [2024-06-27 20:47:53,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 257 transitions, 3649 flow [2024-06-27 20:47:53,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 257 transitions, 3530 flow, removed 40 selfloop flow, removed 4 redundant places. [2024-06-27 20:47:53,444 INFO L231 Difference]: Finished difference. Result has 193 places, 244 transitions, 3020 flow [2024-06-27 20:47:53,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2938, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3020, PETRI_PLACES=193, PETRI_TRANSITIONS=244} [2024-06-27 20:47:53,445 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 152 predicate places. [2024-06-27 20:47:53,445 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 244 transitions, 3020 flow [2024-06-27 20:47:53,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:53,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:53,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:53,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:47:53,446 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:53,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:53,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1539674293, now seen corresponding path program 1 times [2024-06-27 20:47:53,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:53,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314377937] [2024-06-27 20:47:53,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:53,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:54,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:54,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:54,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314377937] [2024-06-27 20:47:54,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314377937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:54,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:54,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:47:54,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629274718] [2024-06-27 20:47:54,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:54,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:47:54,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:54,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:47:54,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:47:54,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:54,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 244 transitions, 3020 flow. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:54,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:54,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:54,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:55,276 INFO L124 PetriNetUnfolderBase]: 2445/3848 cut-off events. [2024-06-27 20:47:55,276 INFO L125 PetriNetUnfolderBase]: For 162355/162355 co-relation queries the response was YES. [2024-06-27 20:47:55,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27970 conditions, 3848 events. 2445/3848 cut-off events. For 162355/162355 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 21148 event pairs, 443 based on Foata normal form. 8/3848 useless extension candidates. Maximal degree in co-relation 27881. Up to 3560 conditions per place. [2024-06-27 20:47:55,312 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 239 selfloop transitions, 27 changer transitions 0/270 dead transitions. [2024-06-27 20:47:55,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 270 transitions, 3756 flow [2024-06-27 20:47:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:47:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:47:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 128 transitions. [2024-06-27 20:47:55,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45714285714285713 [2024-06-27 20:47:55,313 INFO L175 Difference]: Start difference. First operand has 193 places, 244 transitions, 3020 flow. Second operand 7 states and 128 transitions. [2024-06-27 20:47:55,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 270 transitions, 3756 flow [2024-06-27 20:47:55,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 270 transitions, 3692 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:47:55,552 INFO L231 Difference]: Finished difference. Result has 196 places, 246 transitions, 3060 flow [2024-06-27 20:47:55,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2956, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3060, PETRI_PLACES=196, PETRI_TRANSITIONS=246} [2024-06-27 20:47:55,552 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 155 predicate places. [2024-06-27 20:47:55,552 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 246 transitions, 3060 flow [2024-06-27 20:47:55,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 10 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:55,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:55,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:55,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 20:47:55,553 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:55,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:55,554 INFO L85 PathProgramCache]: Analyzing trace with hash 103508134, now seen corresponding path program 1 times [2024-06-27 20:47:55,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:55,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433899782] [2024-06-27 20:47:55,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:55,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:56,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:56,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:56,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433899782] [2024-06-27 20:47:56,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433899782] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:56,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:56,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:47:56,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753520771] [2024-06-27 20:47:56,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:56,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:47:56,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:56,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:47:56,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:47:56,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:56,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 246 transitions, 3060 flow. Second operand has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:56,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:56,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:56,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:57,781 INFO L124 PetriNetUnfolderBase]: 2425/3813 cut-off events. [2024-06-27 20:47:57,781 INFO L125 PetriNetUnfolderBase]: For 155662/155665 co-relation queries the response was YES. [2024-06-27 20:47:57,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27557 conditions, 3813 events. 2425/3813 cut-off events. For 155662/155665 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 20955 event pairs, 532 based on Foata normal form. 14/3821 useless extension candidates. Maximal degree in co-relation 27467. Up to 3112 conditions per place. [2024-06-27 20:47:57,824 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 193 selfloop transitions, 89 changer transitions 0/286 dead transitions. [2024-06-27 20:47:57,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 286 transitions, 3782 flow [2024-06-27 20:47:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:47:57,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:47:57,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 183 transitions. [2024-06-27 20:47:57,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4575 [2024-06-27 20:47:57,826 INFO L175 Difference]: Start difference. First operand has 196 places, 246 transitions, 3060 flow. Second operand 10 states and 183 transitions. [2024-06-27 20:47:57,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 286 transitions, 3782 flow [2024-06-27 20:47:58,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 286 transitions, 3720 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 20:47:58,082 INFO L231 Difference]: Finished difference. Result has 202 places, 248 transitions, 3188 flow [2024-06-27 20:47:58,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3188, PETRI_PLACES=202, PETRI_TRANSITIONS=248} [2024-06-27 20:47:58,083 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 161 predicate places. [2024-06-27 20:47:58,083 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 248 transitions, 3188 flow [2024-06-27 20:47:58,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.25) internal successors, (123), 12 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:58,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:47:58,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:47:58,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 20:47:58,084 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:47:58,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:47:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1366399911, now seen corresponding path program 1 times [2024-06-27 20:47:58,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:47:58,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991951436] [2024-06-27 20:47:58,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:47:58,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:47:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:47:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:47:58,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:47:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991951436] [2024-06-27 20:47:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991951436] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:47:58,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:47:58,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:47:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452051843] [2024-06-27 20:47:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:47:58,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:47:58,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:47:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:47:58,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:47:59,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:47:59,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 248 transitions, 3188 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:47:59,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:47:59,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:47:59,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:47:59,698 INFO L124 PetriNetUnfolderBase]: 2499/3919 cut-off events. [2024-06-27 20:47:59,698 INFO L125 PetriNetUnfolderBase]: For 165050/165053 co-relation queries the response was YES. [2024-06-27 20:47:59,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29021 conditions, 3919 events. 2499/3919 cut-off events. For 165050/165053 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 21571 event pairs, 524 based on Foata normal form. 6/3919 useless extension candidates. Maximal degree in co-relation 28929. Up to 3557 conditions per place. [2024-06-27 20:47:59,734 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 210 selfloop transitions, 68 changer transitions 0/282 dead transitions. [2024-06-27 20:47:59,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 282 transitions, 4175 flow [2024-06-27 20:47:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:47:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:47:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 20:47:59,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 20:47:59,735 INFO L175 Difference]: Start difference. First operand has 202 places, 248 transitions, 3188 flow. Second operand 8 states and 144 transitions. [2024-06-27 20:47:59,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 282 transitions, 4175 flow [2024-06-27 20:48:00,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 282 transitions, 3890 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 20:48:00,061 INFO L231 Difference]: Finished difference. Result has 203 places, 260 transitions, 3330 flow [2024-06-27 20:48:00,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=2911, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3330, PETRI_PLACES=203, PETRI_TRANSITIONS=260} [2024-06-27 20:48:00,061 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 162 predicate places. [2024-06-27 20:48:00,061 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 260 transitions, 3330 flow [2024-06-27 20:48:00,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:00,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:00,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:00,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 20:48:00,062 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:00,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash 292628925, now seen corresponding path program 2 times [2024-06-27 20:48:00,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:00,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840090906] [2024-06-27 20:48:00,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:00,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:01,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:01,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840090906] [2024-06-27 20:48:01,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840090906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:01,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:01,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:01,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528587130] [2024-06-27 20:48:01,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:01,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:01,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:01,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:01,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:01,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:01,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 260 transitions, 3330 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:01,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:01,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:01,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:01,841 INFO L124 PetriNetUnfolderBase]: 2519/3945 cut-off events. [2024-06-27 20:48:01,842 INFO L125 PetriNetUnfolderBase]: For 173010/173013 co-relation queries the response was YES. [2024-06-27 20:48:01,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29549 conditions, 3945 events. 2519/3945 cut-off events. For 173010/173013 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 21649 event pairs, 533 based on Foata normal form. 6/3945 useless extension candidates. Maximal degree in co-relation 29456. Up to 3683 conditions per place. [2024-06-27 20:48:01,880 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 223 selfloop transitions, 56 changer transitions 0/283 dead transitions. [2024-06-27 20:48:01,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 283 transitions, 4108 flow [2024-06-27 20:48:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 20:48:01,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-27 20:48:01,882 INFO L175 Difference]: Start difference. First operand has 203 places, 260 transitions, 3330 flow. Second operand 8 states and 139 transitions. [2024-06-27 20:48:01,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 283 transitions, 4108 flow [2024-06-27 20:48:02,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 283 transitions, 3942 flow, removed 56 selfloop flow, removed 5 redundant places. [2024-06-27 20:48:02,297 INFO L231 Difference]: Finished difference. Result has 206 places, 264 transitions, 3391 flow [2024-06-27 20:48:02,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3184, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3391, PETRI_PLACES=206, PETRI_TRANSITIONS=264} [2024-06-27 20:48:02,297 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 165 predicate places. [2024-06-27 20:48:02,297 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 264 transitions, 3391 flow [2024-06-27 20:48:02,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:02,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:02,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:02,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 20:48:02,298 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:02,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash 499282365, now seen corresponding path program 3 times [2024-06-27 20:48:02,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:02,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163709082] [2024-06-27 20:48:02,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:02,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:03,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:03,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163709082] [2024-06-27 20:48:03,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163709082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:03,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:03,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:03,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497470378] [2024-06-27 20:48:03,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:03,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:03,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:03,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:03,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 264 transitions, 3391 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:03,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:03,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:03,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:03,945 INFO L124 PetriNetUnfolderBase]: 2507/3931 cut-off events. [2024-06-27 20:48:03,945 INFO L125 PetriNetUnfolderBase]: For 167759/167762 co-relation queries the response was YES. [2024-06-27 20:48:03,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29187 conditions, 3931 events. 2507/3931 cut-off events. For 167759/167762 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 21607 event pairs, 551 based on Foata normal form. 6/3931 useless extension candidates. Maximal degree in co-relation 29093. Up to 3753 conditions per place. [2024-06-27 20:48:03,978 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 243 selfloop transitions, 29 changer transitions 0/276 dead transitions. [2024-06-27 20:48:03,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 276 transitions, 4003 flow [2024-06-27 20:48:03,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:48:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:48:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 119 transitions. [2024-06-27 20:48:03,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:48:03,979 INFO L175 Difference]: Start difference. First operand has 206 places, 264 transitions, 3391 flow. Second operand 7 states and 119 transitions. [2024-06-27 20:48:03,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 276 transitions, 4003 flow [2024-06-27 20:48:04,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 276 transitions, 3822 flow, removed 39 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:04,291 INFO L231 Difference]: Finished difference. Result has 207 places, 264 transitions, 3279 flow [2024-06-27 20:48:04,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3210, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3279, PETRI_PLACES=207, PETRI_TRANSITIONS=264} [2024-06-27 20:48:04,291 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 166 predicate places. [2024-06-27 20:48:04,291 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 264 transitions, 3279 flow [2024-06-27 20:48:04,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:04,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:04,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:04,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 20:48:04,292 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:04,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash -746467769, now seen corresponding path program 4 times [2024-06-27 20:48:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:04,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061109455] [2024-06-27 20:48:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:05,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:05,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:05,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061109455] [2024-06-27 20:48:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061109455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:05,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551211220] [2024-06-27 20:48:05,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:05,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:05,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:05,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:05,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 264 transitions, 3279 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:05,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:05,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:05,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:06,140 INFO L124 PetriNetUnfolderBase]: 2570/4019 cut-off events. [2024-06-27 20:48:06,140 INFO L125 PetriNetUnfolderBase]: For 178936/178939 co-relation queries the response was YES. [2024-06-27 20:48:06,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30035 conditions, 4019 events. 2570/4019 cut-off events. For 178936/178939 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 22075 event pairs, 561 based on Foata normal form. 6/4019 useless extension candidates. Maximal degree in co-relation 29940. Up to 3753 conditions per place. [2024-06-27 20:48:06,177 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 246 selfloop transitions, 51 changer transitions 0/301 dead transitions. [2024-06-27 20:48:06,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 301 transitions, 4325 flow [2024-06-27 20:48:06,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:48:06,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:48:06,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 20:48:06,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 20:48:06,179 INFO L175 Difference]: Start difference. First operand has 207 places, 264 transitions, 3279 flow. Second operand 9 states and 158 transitions. [2024-06-27 20:48:06,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 301 transitions, 4325 flow [2024-06-27 20:48:06,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 301 transitions, 4258 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 20:48:06,470 INFO L231 Difference]: Finished difference. Result has 212 places, 275 transitions, 3576 flow [2024-06-27 20:48:06,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3576, PETRI_PLACES=212, PETRI_TRANSITIONS=275} [2024-06-27 20:48:06,471 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 171 predicate places. [2024-06-27 20:48:06,471 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 275 transitions, 3576 flow [2024-06-27 20:48:06,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:06,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:06,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:06,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 20:48:06,472 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:06,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1101167113, now seen corresponding path program 5 times [2024-06-27 20:48:06,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:06,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595600407] [2024-06-27 20:48:06,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:06,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:07,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:07,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:07,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595600407] [2024-06-27 20:48:07,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595600407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:07,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:07,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:07,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998731724] [2024-06-27 20:48:07,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:07,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:07,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:07,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:07,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:07,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:07,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 275 transitions, 3576 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:07,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:07,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:07,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:08,223 INFO L124 PetriNetUnfolderBase]: 2622/4093 cut-off events. [2024-06-27 20:48:08,224 INFO L125 PetriNetUnfolderBase]: For 188952/188955 co-relation queries the response was YES. [2024-06-27 20:48:08,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31342 conditions, 4093 events. 2622/4093 cut-off events. For 188952/188955 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22497 event pairs, 567 based on Foata normal form. 4/4091 useless extension candidates. Maximal degree in co-relation 31245. Up to 3672 conditions per place. [2024-06-27 20:48:08,264 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 231 selfloop transitions, 73 changer transitions 0/308 dead transitions. [2024-06-27 20:48:08,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 308 transitions, 4441 flow [2024-06-27 20:48:08,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:08,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:08,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 20:48:08,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-27 20:48:08,266 INFO L175 Difference]: Start difference. First operand has 212 places, 275 transitions, 3576 flow. Second operand 8 states and 145 transitions. [2024-06-27 20:48:08,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 308 transitions, 4441 flow [2024-06-27 20:48:08,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 308 transitions, 4265 flow, removed 65 selfloop flow, removed 5 redundant places. [2024-06-27 20:48:08,624 INFO L231 Difference]: Finished difference. Result has 215 places, 286 transitions, 3736 flow [2024-06-27 20:48:08,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3736, PETRI_PLACES=215, PETRI_TRANSITIONS=286} [2024-06-27 20:48:08,625 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 174 predicate places. [2024-06-27 20:48:08,625 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 286 transitions, 3736 flow [2024-06-27 20:48:08,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:08,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:08,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:08,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 20:48:08,625 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:08,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:08,626 INFO L85 PathProgramCache]: Analyzing trace with hash -746318039, now seen corresponding path program 6 times [2024-06-27 20:48:08,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:08,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137895212] [2024-06-27 20:48:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:08,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:09,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:09,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137895212] [2024-06-27 20:48:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137895212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:09,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:09,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:09,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679673052] [2024-06-27 20:48:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:09,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:09,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:09,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:09,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 286 transitions, 3736 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:09,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:09,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:09,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:10,324 INFO L124 PetriNetUnfolderBase]: 2610/4077 cut-off events. [2024-06-27 20:48:10,325 INFO L125 PetriNetUnfolderBase]: For 192247/192250 co-relation queries the response was YES. [2024-06-27 20:48:10,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31409 conditions, 4077 events. 2610/4077 cut-off events. For 192247/192250 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 22415 event pairs, 566 based on Foata normal form. 6/4077 useless extension candidates. Maximal degree in co-relation 31310. Up to 3847 conditions per place. [2024-06-27 20:48:10,368 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 259 selfloop transitions, 43 changer transitions 0/306 dead transitions. [2024-06-27 20:48:10,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 306 transitions, 4448 flow [2024-06-27 20:48:10,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:10,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:10,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 20:48:10,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-27 20:48:10,369 INFO L175 Difference]: Start difference. First operand has 215 places, 286 transitions, 3736 flow. Second operand 8 states and 138 transitions. [2024-06-27 20:48:10,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 306 transitions, 4448 flow [2024-06-27 20:48:10,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 306 transitions, 4243 flow, removed 56 selfloop flow, removed 4 redundant places. [2024-06-27 20:48:10,764 INFO L231 Difference]: Finished difference. Result has 219 places, 286 transitions, 3624 flow [2024-06-27 20:48:10,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3531, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3624, PETRI_PLACES=219, PETRI_TRANSITIONS=286} [2024-06-27 20:48:10,765 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 178 predicate places. [2024-06-27 20:48:10,765 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 286 transitions, 3624 flow [2024-06-27 20:48:10,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:10,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:10,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:10,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 20:48:10,765 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:10,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:10,765 INFO L85 PathProgramCache]: Analyzing trace with hash 252128185, now seen corresponding path program 7 times [2024-06-27 20:48:10,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:10,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805450401] [2024-06-27 20:48:10,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:10,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:11,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:11,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805450401] [2024-06-27 20:48:11,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805450401] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:11,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:11,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:11,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346366971] [2024-06-27 20:48:11,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:11,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:11,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:11,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:11,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:11,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:11,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 286 transitions, 3624 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:11,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:11,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:11,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:12,430 INFO L124 PetriNetUnfolderBase]: 2644/4124 cut-off events. [2024-06-27 20:48:12,430 INFO L125 PetriNetUnfolderBase]: For 200489/200492 co-relation queries the response was YES. [2024-06-27 20:48:12,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31923 conditions, 4124 events. 2644/4124 cut-off events. For 200489/200492 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 22675 event pairs, 540 based on Foata normal form. 4/4122 useless extension candidates. Maximal degree in co-relation 31823. Up to 3562 conditions per place. [2024-06-27 20:48:12,472 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 206 selfloop transitions, 105 changer transitions 0/315 dead transitions. [2024-06-27 20:48:12,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 315 transitions, 4656 flow [2024-06-27 20:48:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 20:48:12,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-27 20:48:12,473 INFO L175 Difference]: Start difference. First operand has 219 places, 286 transitions, 3624 flow. Second operand 8 states and 145 transitions. [2024-06-27 20:48:12,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 315 transitions, 4656 flow [2024-06-27 20:48:12,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 315 transitions, 4549 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:48:12,766 INFO L231 Difference]: Finished difference. Result has 220 places, 293 transitions, 3989 flow [2024-06-27 20:48:12,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3521, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3989, PETRI_PLACES=220, PETRI_TRANSITIONS=293} [2024-06-27 20:48:12,767 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 179 predicate places. [2024-06-27 20:48:12,767 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 293 transitions, 3989 flow [2024-06-27 20:48:12,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:12,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:12,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:12,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 20:48:12,767 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:12,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash 395781565, now seen corresponding path program 8 times [2024-06-27 20:48:12,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:12,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884176501] [2024-06-27 20:48:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:12,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:12,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:13,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:13,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:13,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884176501] [2024-06-27 20:48:13,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884176501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:13,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:13,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:48:13,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200390975] [2024-06-27 20:48:13,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:13,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:48:13,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:13,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:48:13,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:48:13,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:13,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 293 transitions, 3989 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:13,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:13,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:13,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:14,424 INFO L124 PetriNetUnfolderBase]: 2649/4129 cut-off events. [2024-06-27 20:48:14,424 INFO L125 PetriNetUnfolderBase]: For 200788/200791 co-relation queries the response was YES. [2024-06-27 20:48:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32904 conditions, 4129 events. 2649/4129 cut-off events. For 200788/200791 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22638 event pairs, 536 based on Foata normal form. 3/4126 useless extension candidates. Maximal degree in co-relation 32804. Up to 3925 conditions per place. [2024-06-27 20:48:14,464 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 275 selfloop transitions, 48 changer transitions 0/327 dead transitions. [2024-06-27 20:48:14,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 327 transitions, 5040 flow [2024-06-27 20:48:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 20:48:14,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 20:48:14,466 INFO L175 Difference]: Start difference. First operand has 220 places, 293 transitions, 3989 flow. Second operand 8 states and 134 transitions. [2024-06-27 20:48:14,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 327 transitions, 5040 flow [2024-06-27 20:48:14,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 327 transitions, 4868 flow, removed 52 selfloop flow, removed 3 redundant places. [2024-06-27 20:48:14,816 INFO L231 Difference]: Finished difference. Result has 228 places, 312 transitions, 4325 flow [2024-06-27 20:48:14,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4325, PETRI_PLACES=228, PETRI_TRANSITIONS=312} [2024-06-27 20:48:14,816 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 187 predicate places. [2024-06-27 20:48:14,817 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 312 transitions, 4325 flow [2024-06-27 20:48:14,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:14,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:14,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:14,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:48:14,817 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:14,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:14,818 INFO L85 PathProgramCache]: Analyzing trace with hash 396018715, now seen corresponding path program 9 times [2024-06-27 20:48:14,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:14,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766385339] [2024-06-27 20:48:14,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:14,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:15,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:15,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:15,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766385339] [2024-06-27 20:48:15,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766385339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:15,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:15,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:15,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830702598] [2024-06-27 20:48:15,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:15,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:15,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:15,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:15,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:15,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:15,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 312 transitions, 4325 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:15,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:15,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:15,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:16,335 INFO L124 PetriNetUnfolderBase]: 2683/4176 cut-off events. [2024-06-27 20:48:16,335 INFO L125 PetriNetUnfolderBase]: For 213651/213654 co-relation queries the response was YES. [2024-06-27 20:48:16,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34060 conditions, 4176 events. 2683/4176 cut-off events. For 213651/213654 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 22894 event pairs, 546 based on Foata normal form. 4/4174 useless extension candidates. Maximal degree in co-relation 33955. Up to 3787 conditions per place. [2024-06-27 20:48:16,377 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 244 selfloop transitions, 91 changer transitions 0/339 dead transitions. [2024-06-27 20:48:16,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 339 transitions, 5438 flow [2024-06-27 20:48:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:16,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:16,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 20:48:16,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2024-06-27 20:48:16,378 INFO L175 Difference]: Start difference. First operand has 228 places, 312 transitions, 4325 flow. Second operand 8 states and 141 transitions. [2024-06-27 20:48:16,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 339 transitions, 5438 flow [2024-06-27 20:48:16,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 339 transitions, 5270 flow, removed 84 selfloop flow, removed 0 redundant places. [2024-06-27 20:48:16,760 INFO L231 Difference]: Finished difference. Result has 237 places, 319 transitions, 4567 flow [2024-06-27 20:48:16,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4165, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4567, PETRI_PLACES=237, PETRI_TRANSITIONS=319} [2024-06-27 20:48:16,760 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 196 predicate places. [2024-06-27 20:48:16,760 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 319 transitions, 4567 flow [2024-06-27 20:48:16,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:16,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:16,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:16,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:48:16,761 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:16,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:16,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1598577200, now seen corresponding path program 1 times [2024-06-27 20:48:16,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:16,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638511529] [2024-06-27 20:48:16,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:16,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:17,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:17,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638511529] [2024-06-27 20:48:17,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638511529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:17,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:17,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:17,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866571283] [2024-06-27 20:48:17,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:17,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:17,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:17,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:17,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:17,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:17,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 319 transitions, 4567 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:17,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:17,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:18,520 INFO L124 PetriNetUnfolderBase]: 2690/4184 cut-off events. [2024-06-27 20:48:18,520 INFO L125 PetriNetUnfolderBase]: For 217761/217761 co-relation queries the response was YES. [2024-06-27 20:48:18,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34267 conditions, 4184 events. 2690/4184 cut-off events. For 217761/217761 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 22886 event pairs, 542 based on Foata normal form. 3/4180 useless extension candidates. Maximal degree in co-relation 34157. Up to 3974 conditions per place. [2024-06-27 20:48:18,571 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 305 selfloop transitions, 31 changer transitions 0/340 dead transitions. [2024-06-27 20:48:18,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 340 transitions, 5509 flow [2024-06-27 20:48:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:48:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:48:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 20:48:18,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 20:48:18,572 INFO L175 Difference]: Start difference. First operand has 237 places, 319 transitions, 4567 flow. Second operand 7 states and 120 transitions. [2024-06-27 20:48:18,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 340 transitions, 5509 flow [2024-06-27 20:48:19,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 340 transitions, 5361 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-06-27 20:48:19,026 INFO L231 Difference]: Finished difference. Result has 240 places, 322 transitions, 4590 flow [2024-06-27 20:48:19,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4590, PETRI_PLACES=240, PETRI_TRANSITIONS=322} [2024-06-27 20:48:19,027 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 199 predicate places. [2024-06-27 20:48:19,027 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 322 transitions, 4590 flow [2024-06-27 20:48:19,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:19,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:19,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:19,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:48:19,028 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:19,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1678187986, now seen corresponding path program 2 times [2024-06-27 20:48:19,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:19,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798567039] [2024-06-27 20:48:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:19,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:19,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:19,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:19,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:19,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798567039] [2024-06-27 20:48:19,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798567039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:19,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:19,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:19,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338699634] [2024-06-27 20:48:19,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:19,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:19,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:19,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:19,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:19,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:19,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 322 transitions, 4590 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:19,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:19,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:19,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:20,690 INFO L124 PetriNetUnfolderBase]: 2684/4176 cut-off events. [2024-06-27 20:48:20,690 INFO L125 PetriNetUnfolderBase]: For 220037/220037 co-relation queries the response was YES. [2024-06-27 20:48:20,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34445 conditions, 4176 events. 2684/4176 cut-off events. For 220037/220037 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 22854 event pairs, 541 based on Foata normal form. 2/4171 useless extension candidates. Maximal degree in co-relation 34333. Up to 3908 conditions per place. [2024-06-27 20:48:20,737 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 289 selfloop transitions, 50 changer transitions 0/343 dead transitions. [2024-06-27 20:48:20,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 343 transitions, 5544 flow [2024-06-27 20:48:20,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:48:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:48:20,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 20:48:20,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-27 20:48:20,738 INFO L175 Difference]: Start difference. First operand has 240 places, 322 transitions, 4590 flow. Second operand 7 states and 121 transitions. [2024-06-27 20:48:20,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 343 transitions, 5544 flow [2024-06-27 20:48:21,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 343 transitions, 5418 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:21,315 INFO L231 Difference]: Finished difference. Result has 241 places, 325 transitions, 4679 flow [2024-06-27 20:48:21,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4464, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4679, PETRI_PLACES=241, PETRI_TRANSITIONS=325} [2024-06-27 20:48:21,316 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 200 predicate places. [2024-06-27 20:48:21,316 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 325 transitions, 4679 flow [2024-06-27 20:48:21,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:21,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:21,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:21,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:48:21,317 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:21,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:21,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1244110269, now seen corresponding path program 10 times [2024-06-27 20:48:21,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:21,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127861033] [2024-06-27 20:48:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:21,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:21,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127861033] [2024-06-27 20:48:21,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127861033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:21,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:21,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:21,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614018166] [2024-06-27 20:48:21,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:21,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:21,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:21,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:21,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:22,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:22,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 325 transitions, 4679 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:22,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:22,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:22,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:23,037 INFO L124 PetriNetUnfolderBase]: 2704/4206 cut-off events. [2024-06-27 20:48:23,037 INFO L125 PetriNetUnfolderBase]: For 225758/225761 co-relation queries the response was YES. [2024-06-27 20:48:23,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34979 conditions, 4206 events. 2704/4206 cut-off events. For 225758/225761 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 23031 event pairs, 545 based on Foata normal form. 6/4206 useless extension candidates. Maximal degree in co-relation 34867. Up to 4041 conditions per place. [2024-06-27 20:48:23,085 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 312 selfloop transitions, 28 changer transitions 0/344 dead transitions. [2024-06-27 20:48:23,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 344 transitions, 5569 flow [2024-06-27 20:48:23,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:23,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:23,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 130 transitions. [2024-06-27 20:48:23,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:48:23,087 INFO L175 Difference]: Start difference. First operand has 241 places, 325 transitions, 4679 flow. Second operand 8 states and 130 transitions. [2024-06-27 20:48:23,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 344 transitions, 5569 flow [2024-06-27 20:48:23,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 344 transitions, 5399 flow, removed 37 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:23,622 INFO L231 Difference]: Finished difference. Result has 243 places, 329 transitions, 4695 flow [2024-06-27 20:48:23,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4509, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4695, PETRI_PLACES=243, PETRI_TRANSITIONS=329} [2024-06-27 20:48:23,623 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 202 predicate places. [2024-06-27 20:48:23,623 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 329 transitions, 4695 flow [2024-06-27 20:48:23,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:23,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:23,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:23,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:48:23,623 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:23,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1421478939, now seen corresponding path program 11 times [2024-06-27 20:48:23,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:23,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007303638] [2024-06-27 20:48:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:23,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:24,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:24,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007303638] [2024-06-27 20:48:24,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007303638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:24,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:24,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:48:24,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840143570] [2024-06-27 20:48:24,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:24,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:48:24,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:48:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:48:24,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:24,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 329 transitions, 4695 flow. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:24,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:24,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:24,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:25,411 INFO L124 PetriNetUnfolderBase]: 2714/4220 cut-off events. [2024-06-27 20:48:25,412 INFO L125 PetriNetUnfolderBase]: For 222636/222639 co-relation queries the response was YES. [2024-06-27 20:48:25,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34986 conditions, 4220 events. 2714/4220 cut-off events. For 222636/222639 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 23137 event pairs, 547 based on Foata normal form. 4/4218 useless extension candidates. Maximal degree in co-relation 34874. Up to 3965 conditions per place. [2024-06-27 20:48:25,454 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 291 selfloop transitions, 52 changer transitions 0/347 dead transitions. [2024-06-27 20:48:25,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 347 transitions, 5670 flow [2024-06-27 20:48:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:25,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 20:48:25,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 20:48:25,455 INFO L175 Difference]: Start difference. First operand has 243 places, 329 transitions, 4695 flow. Second operand 8 states and 134 transitions. [2024-06-27 20:48:25,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 347 transitions, 5670 flow [2024-06-27 20:48:25,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 347 transitions, 5530 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:25,958 INFO L231 Difference]: Finished difference. Result has 245 places, 332 transitions, 4752 flow [2024-06-27 20:48:25,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4555, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4752, PETRI_PLACES=245, PETRI_TRANSITIONS=332} [2024-06-27 20:48:25,958 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 204 predicate places. [2024-06-27 20:48:25,959 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 332 transitions, 4752 flow [2024-06-27 20:48:25,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 9 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:25,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:25,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:25,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:48:25,959 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:25,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:25,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1421241789, now seen corresponding path program 12 times [2024-06-27 20:48:25,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:25,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830818632] [2024-06-27 20:48:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:25,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:26,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:26,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830818632] [2024-06-27 20:48:26,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830818632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:26,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:26,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:48:26,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329124058] [2024-06-27 20:48:26,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:26,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:48:26,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:26,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:48:26,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:48:26,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:26,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 332 transitions, 4752 flow. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:26,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:26,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:26,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:27,661 INFO L124 PetriNetUnfolderBase]: 2711/4218 cut-off events. [2024-06-27 20:48:27,661 INFO L125 PetriNetUnfolderBase]: For 224787/224790 co-relation queries the response was YES. [2024-06-27 20:48:27,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34919 conditions, 4218 events. 2711/4218 cut-off events. For 224787/224790 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 23137 event pairs, 543 based on Foata normal form. 3/4215 useless extension candidates. Maximal degree in co-relation 34806. Up to 4066 conditions per place. [2024-06-27 20:48:27,704 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 311 selfloop transitions, 33 changer transitions 0/348 dead transitions. [2024-06-27 20:48:27,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 348 transitions, 5571 flow [2024-06-27 20:48:27,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:27,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:27,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 129 transitions. [2024-06-27 20:48:27,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 20:48:27,705 INFO L175 Difference]: Start difference. First operand has 245 places, 332 transitions, 4752 flow. Second operand 8 states and 129 transitions. [2024-06-27 20:48:27,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 348 transitions, 5571 flow [2024-06-27 20:48:28,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 348 transitions, 5224 flow, removed 49 selfloop flow, removed 8 redundant places. [2024-06-27 20:48:28,182 INFO L231 Difference]: Finished difference. Result has 246 places, 338 transitions, 4597 flow [2024-06-27 20:48:28,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4419, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4597, PETRI_PLACES=246, PETRI_TRANSITIONS=338} [2024-06-27 20:48:28,183 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 205 predicate places. [2024-06-27 20:48:28,183 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 338 transitions, 4597 flow [2024-06-27 20:48:28,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:28,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:28,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:28,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:48:28,183 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:28,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:28,183 INFO L85 PathProgramCache]: Analyzing trace with hash 252143065, now seen corresponding path program 1 times [2024-06-27 20:48:28,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:28,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615532351] [2024-06-27 20:48:28,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:28,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:29,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:29,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615532351] [2024-06-27 20:48:29,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615532351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:29,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:29,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579980079] [2024-06-27 20:48:29,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:29,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:29,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:29,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:29,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:29,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 338 transitions, 4597 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:29,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:29,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:29,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:30,200 INFO L124 PetriNetUnfolderBase]: 2719/4221 cut-off events. [2024-06-27 20:48:30,201 INFO L125 PetriNetUnfolderBase]: For 231327/231327 co-relation queries the response was YES. [2024-06-27 20:48:30,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34644 conditions, 4221 events. 2719/4221 cut-off events. For 231327/231327 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 23103 event pairs, 567 based on Foata normal form. 2/4220 useless extension candidates. Maximal degree in co-relation 34531. Up to 4063 conditions per place. [2024-06-27 20:48:30,249 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 323 selfloop transitions, 34 changer transitions 0/361 dead transitions. [2024-06-27 20:48:30,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 361 transitions, 5444 flow [2024-06-27 20:48:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:30,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:30,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 20:48:30,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:48:30,250 INFO L175 Difference]: Start difference. First operand has 246 places, 338 transitions, 4597 flow. Second operand 8 states and 136 transitions. [2024-06-27 20:48:30,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 361 transitions, 5444 flow [2024-06-27 20:48:31,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 361 transitions, 5310 flow, removed 26 selfloop flow, removed 5 redundant places. [2024-06-27 20:48:31,008 INFO L231 Difference]: Finished difference. Result has 249 places, 340 transitions, 4584 flow [2024-06-27 20:48:31,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4465, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4584, PETRI_PLACES=249, PETRI_TRANSITIONS=340} [2024-06-27 20:48:31,008 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 208 predicate places. [2024-06-27 20:48:31,008 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 340 transitions, 4584 flow [2024-06-27 20:48:31,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:31,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:31,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:31,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:48:31,009 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:31,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:31,009 INFO L85 PathProgramCache]: Analyzing trace with hash -362281049, now seen corresponding path program 2 times [2024-06-27 20:48:31,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:31,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50289008] [2024-06-27 20:48:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:31,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:32,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:32,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:32,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50289008] [2024-06-27 20:48:32,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50289008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:32,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:32,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:32,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488163400] [2024-06-27 20:48:32,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:32,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:32,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:32,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:32,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:32,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 340 transitions, 4584 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:32,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:32,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:32,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:33,263 INFO L124 PetriNetUnfolderBase]: 2727/4235 cut-off events. [2024-06-27 20:48:33,264 INFO L125 PetriNetUnfolderBase]: For 238471/238471 co-relation queries the response was YES. [2024-06-27 20:48:33,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34969 conditions, 4235 events. 2727/4235 cut-off events. For 238471/238471 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 23186 event pairs, 571 based on Foata normal form. 2/4234 useless extension candidates. Maximal degree in co-relation 34855. Up to 4098 conditions per place. [2024-06-27 20:48:33,310 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 329 selfloop transitions, 26 changer transitions 0/359 dead transitions. [2024-06-27 20:48:33,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 359 transitions, 5405 flow [2024-06-27 20:48:33,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:33,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:33,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 20:48:33,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 20:48:33,311 INFO L175 Difference]: Start difference. First operand has 249 places, 340 transitions, 4584 flow. Second operand 8 states and 132 transitions. [2024-06-27 20:48:33,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 359 transitions, 5405 flow [2024-06-27 20:48:33,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 359 transitions, 5302 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:33,795 INFO L231 Difference]: Finished difference. Result has 251 places, 342 transitions, 4588 flow [2024-06-27 20:48:33,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4481, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4588, PETRI_PLACES=251, PETRI_TRANSITIONS=342} [2024-06-27 20:48:33,796 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 210 predicate places. [2024-06-27 20:48:33,796 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 342 transitions, 4588 flow [2024-06-27 20:48:33,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:33,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:33,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:33,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:48:33,796 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:33,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:33,796 INFO L85 PathProgramCache]: Analyzing trace with hash 396242845, now seen corresponding path program 3 times [2024-06-27 20:48:33,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:33,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470521054] [2024-06-27 20:48:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:33,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:35,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:35,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470521054] [2024-06-27 20:48:35,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470521054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:35,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:35,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:35,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475115744] [2024-06-27 20:48:35,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:35,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:35,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:35,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:35,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:35,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 342 transitions, 4588 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:35,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:35,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:35,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:35,982 INFO L124 PetriNetUnfolderBase]: 2735/4247 cut-off events. [2024-06-27 20:48:35,982 INFO L125 PetriNetUnfolderBase]: For 245790/245790 co-relation queries the response was YES. [2024-06-27 20:48:36,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35247 conditions, 4247 events. 2735/4247 cut-off events. For 245790/245790 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 23299 event pairs, 569 based on Foata normal form. 2/4246 useless extension candidates. Maximal degree in co-relation 35132. Up to 4110 conditions per place. [2024-06-27 20:48:36,030 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 332 selfloop transitions, 25 changer transitions 0/361 dead transitions. [2024-06-27 20:48:36,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 361 transitions, 5407 flow [2024-06-27 20:48:36,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-27 20:48:36,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 20:48:36,031 INFO L175 Difference]: Start difference. First operand has 251 places, 342 transitions, 4588 flow. Second operand 8 states and 131 transitions. [2024-06-27 20:48:36,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 361 transitions, 5407 flow [2024-06-27 20:48:36,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 361 transitions, 5316 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:36,483 INFO L231 Difference]: Finished difference. Result has 253 places, 344 transitions, 4606 flow [2024-06-27 20:48:36,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4497, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4606, PETRI_PLACES=253, PETRI_TRANSITIONS=344} [2024-06-27 20:48:36,483 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 212 predicate places. [2024-06-27 20:48:36,483 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 344 transitions, 4606 flow [2024-06-27 20:48:36,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:36,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:36,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:36,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:48:36,484 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:36,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:36,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1604306713, now seen corresponding path program 4 times [2024-06-27 20:48:36,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:36,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315986975] [2024-06-27 20:48:36,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:36,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:37,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:37,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:37,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315986975] [2024-06-27 20:48:37,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315986975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:37,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:37,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:37,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454512003] [2024-06-27 20:48:37,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:37,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:37,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:37,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:37,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:37,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:37,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 344 transitions, 4606 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:37,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:37,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:37,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:38,314 INFO L124 PetriNetUnfolderBase]: 2743/4257 cut-off events. [2024-06-27 20:48:38,314 INFO L125 PetriNetUnfolderBase]: For 253547/253547 co-relation queries the response was YES. [2024-06-27 20:48:38,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35551 conditions, 4257 events. 2743/4257 cut-off events. For 253547/253547 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 23286 event pairs, 574 based on Foata normal form. 2/4256 useless extension candidates. Maximal degree in co-relation 35435. Up to 4129 conditions per place. [2024-06-27 20:48:38,357 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 332 selfloop transitions, 23 changer transitions 0/359 dead transitions. [2024-06-27 20:48:38,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 359 transitions, 5408 flow [2024-06-27 20:48:38,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:38,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 20:48:38,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 20:48:38,358 INFO L175 Difference]: Start difference. First operand has 253 places, 344 transitions, 4606 flow. Second operand 8 states and 126 transitions. [2024-06-27 20:48:38,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 359 transitions, 5408 flow [2024-06-27 20:48:39,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 359 transitions, 5315 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:39,050 INFO L231 Difference]: Finished difference. Result has 255 places, 346 transitions, 4622 flow [2024-06-27 20:48:39,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4513, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4622, PETRI_PLACES=255, PETRI_TRANSITIONS=346} [2024-06-27 20:48:39,051 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 214 predicate places. [2024-06-27 20:48:39,051 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 346 transitions, 4622 flow [2024-06-27 20:48:39,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:39,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:39,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:39,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:48:39,052 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:39,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:39,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1448252889, now seen corresponding path program 5 times [2024-06-27 20:48:39,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:39,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877782636] [2024-06-27 20:48:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:39,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:40,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:40,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877782636] [2024-06-27 20:48:40,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877782636] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:40,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:40,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:40,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692211948] [2024-06-27 20:48:40,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:40,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:40,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:40,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:40,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:40,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 346 transitions, 4622 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:40,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:40,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:40,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:41,112 INFO L124 PetriNetUnfolderBase]: 2751/4271 cut-off events. [2024-06-27 20:48:41,112 INFO L125 PetriNetUnfolderBase]: For 261817/261817 co-relation queries the response was YES. [2024-06-27 20:48:41,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35853 conditions, 4271 events. 2751/4271 cut-off events. For 261817/261817 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 23381 event pairs, 580 based on Foata normal form. 2/4270 useless extension candidates. Maximal degree in co-relation 35736. Up to 4149 conditions per place. [2024-06-27 20:48:41,153 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 338 selfloop transitions, 19 changer transitions 0/361 dead transitions. [2024-06-27 20:48:41,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 361 transitions, 5442 flow [2024-06-27 20:48:41,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:41,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 126 transitions. [2024-06-27 20:48:41,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 20:48:41,155 INFO L175 Difference]: Start difference. First operand has 255 places, 346 transitions, 4622 flow. Second operand 8 states and 126 transitions. [2024-06-27 20:48:41,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 361 transitions, 5442 flow [2024-06-27 20:48:41,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 361 transitions, 5349 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:41,631 INFO L231 Difference]: Finished difference. Result has 257 places, 348 transitions, 4634 flow [2024-06-27 20:48:41,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4529, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4634, PETRI_PLACES=257, PETRI_TRANSITIONS=348} [2024-06-27 20:48:41,632 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 216 predicate places. [2024-06-27 20:48:41,632 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 348 transitions, 4634 flow [2024-06-27 20:48:41,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:41,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:41,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:41,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:48:41,633 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:41,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 697556805, now seen corresponding path program 6 times [2024-06-27 20:48:41,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:41,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624919803] [2024-06-27 20:48:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:41,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:42,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:42,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624919803] [2024-06-27 20:48:42,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624919803] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:42,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:42,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970918630] [2024-06-27 20:48:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:42,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:42,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:42,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:42,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:42,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:42,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 348 transitions, 4634 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:42,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:42,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:42,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:43,735 INFO L124 PetriNetUnfolderBase]: 2759/4285 cut-off events. [2024-06-27 20:48:43,735 INFO L125 PetriNetUnfolderBase]: For 269885/269885 co-relation queries the response was YES. [2024-06-27 20:48:43,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36157 conditions, 4285 events. 2759/4285 cut-off events. For 269885/269885 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 23523 event pairs, 562 based on Foata normal form. 2/4284 useless extension candidates. Maximal degree in co-relation 36039. Up to 4156 conditions per place. [2024-06-27 20:48:43,776 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 342 selfloop transitions, 17 changer transitions 0/363 dead transitions. [2024-06-27 20:48:43,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 363 transitions, 5448 flow [2024-06-27 20:48:43,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 125 transitions. [2024-06-27 20:48:43,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 20:48:43,777 INFO L175 Difference]: Start difference. First operand has 257 places, 348 transitions, 4634 flow. Second operand 8 states and 125 transitions. [2024-06-27 20:48:43,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 363 transitions, 5448 flow [2024-06-27 20:48:44,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 363 transitions, 5365 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-06-27 20:48:44,258 INFO L231 Difference]: Finished difference. Result has 260 places, 350 transitions, 4656 flow [2024-06-27 20:48:44,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4551, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4656, PETRI_PLACES=260, PETRI_TRANSITIONS=350} [2024-06-27 20:48:44,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 219 predicate places. [2024-06-27 20:48:44,259 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 350 transitions, 4656 flow [2024-06-27 20:48:44,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:44,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:44,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:44,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:48:44,259 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:44,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:44,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1678195922, now seen corresponding path program 1 times [2024-06-27 20:48:44,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:44,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585961379] [2024-06-27 20:48:44,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:44,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:45,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:45,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:45,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585961379] [2024-06-27 20:48:45,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585961379] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:45,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:45,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:45,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600710560] [2024-06-27 20:48:45,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:45,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:45,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:45,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:45,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:45,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:45,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 350 transitions, 4656 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:45,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:45,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:45,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:46,069 INFO L124 PetriNetUnfolderBase]: 2756/4279 cut-off events. [2024-06-27 20:48:46,070 INFO L125 PetriNetUnfolderBase]: For 273906/273906 co-relation queries the response was YES. [2024-06-27 20:48:46,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36209 conditions, 4279 events. 2756/4279 cut-off events. For 273906/273906 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 23487 event pairs, 577 based on Foata normal form. 1/4277 useless extension candidates. Maximal degree in co-relation 36090. Up to 4143 conditions per place. [2024-06-27 20:48:46,121 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 334 selfloop transitions, 30 changer transitions 0/368 dead transitions. [2024-06-27 20:48:46,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 368 transitions, 5538 flow [2024-06-27 20:48:46,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:46,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 128 transitions. [2024-06-27 20:48:46,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-27 20:48:46,122 INFO L175 Difference]: Start difference. First operand has 260 places, 350 transitions, 4656 flow. Second operand 8 states and 128 transitions. [2024-06-27 20:48:46,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 368 transitions, 5538 flow [2024-06-27 20:48:46,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 368 transitions, 5449 flow, removed 29 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:46,823 INFO L231 Difference]: Finished difference. Result has 262 places, 355 transitions, 4742 flow [2024-06-27 20:48:46,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4742, PETRI_PLACES=262, PETRI_TRANSITIONS=355} [2024-06-27 20:48:46,823 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 221 predicate places. [2024-06-27 20:48:46,823 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 355 transitions, 4742 flow [2024-06-27 20:48:46,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:46,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:46,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:48:46,824 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:46,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash 697289895, now seen corresponding path program 7 times [2024-06-27 20:48:46,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737066628] [2024-06-27 20:48:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:47,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:47,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737066628] [2024-06-27 20:48:47,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737066628] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:47,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:47,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903224039] [2024-06-27 20:48:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:47,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:47,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:47,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:47,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 355 transitions, 4742 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:47,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:47,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:47,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:48,748 INFO L124 PetriNetUnfolderBase]: 2751/4274 cut-off events. [2024-06-27 20:48:48,749 INFO L125 PetriNetUnfolderBase]: For 278848/278848 co-relation queries the response was YES. [2024-06-27 20:48:48,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36319 conditions, 4274 events. 2751/4274 cut-off events. For 278848/278848 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 23416 event pairs, 575 based on Foata normal form. 2/4273 useless extension candidates. Maximal degree in co-relation 36199. Up to 4135 conditions per place. [2024-06-27 20:48:48,798 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 337 selfloop transitions, 29 changer transitions 0/370 dead transitions. [2024-06-27 20:48:48,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 370 transitions, 5590 flow [2024-06-27 20:48:48,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:48,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:48,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 127 transitions. [2024-06-27 20:48:48,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396875 [2024-06-27 20:48:48,799 INFO L175 Difference]: Start difference. First operand has 262 places, 355 transitions, 4742 flow. Second operand 8 states and 127 transitions. [2024-06-27 20:48:48,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 370 transitions, 5590 flow [2024-06-27 20:48:49,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 370 transitions, 5465 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:49,357 INFO L231 Difference]: Finished difference. Result has 264 places, 357 transitions, 4755 flow [2024-06-27 20:48:49,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4617, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4755, PETRI_PLACES=264, PETRI_TRANSITIONS=357} [2024-06-27 20:48:49,358 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 223 predicate places. [2024-06-27 20:48:49,358 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 357 transitions, 4755 flow [2024-06-27 20:48:49,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:49,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:49,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:49,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:48:49,358 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:49,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1622768355, now seen corresponding path program 1 times [2024-06-27 20:48:49,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:49,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936793608] [2024-06-27 20:48:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:49,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936793608] [2024-06-27 20:48:50,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936793608] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:50,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467035944] [2024-06-27 20:48:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:50,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:50,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:50,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:50,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:50,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:50,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 357 transitions, 4755 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:50,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:50,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:50,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:51,561 INFO L124 PetriNetUnfolderBase]: 2782/4322 cut-off events. [2024-06-27 20:48:51,561 INFO L125 PetriNetUnfolderBase]: For 293363/293363 co-relation queries the response was YES. [2024-06-27 20:48:51,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37195 conditions, 4322 events. 2782/4322 cut-off events. For 293363/293363 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 23772 event pairs, 511 based on Foata normal form. 2/4317 useless extension candidates. Maximal degree in co-relation 37074. Up to 3881 conditions per place. [2024-06-27 20:48:51,610 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 297 selfloop transitions, 97 changer transitions 0/398 dead transitions. [2024-06-27 20:48:51,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 398 transitions, 6147 flow [2024-06-27 20:48:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:48:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:48:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 20:48:51,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45625 [2024-06-27 20:48:51,612 INFO L175 Difference]: Start difference. First operand has 264 places, 357 transitions, 4755 flow. Second operand 8 states and 146 transitions. [2024-06-27 20:48:51,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 398 transitions, 6147 flow [2024-06-27 20:48:52,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 398 transitions, 6023 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 20:48:52,192 INFO L231 Difference]: Finished difference. Result has 269 places, 371 transitions, 5285 flow [2024-06-27 20:48:52,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=4637, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5285, PETRI_PLACES=269, PETRI_TRANSITIONS=371} [2024-06-27 20:48:52,193 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 228 predicate places. [2024-06-27 20:48:52,193 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 371 transitions, 5285 flow [2024-06-27 20:48:52,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:52,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:52,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:52,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:48:52,194 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:52,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:52,194 INFO L85 PathProgramCache]: Analyzing trace with hash -927545999, now seen corresponding path program 2 times [2024-06-27 20:48:52,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:52,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497804633] [2024-06-27 20:48:52,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:52,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:53,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:53,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497804633] [2024-06-27 20:48:53,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497804633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:53,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:53,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:48:53,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306939515] [2024-06-27 20:48:53,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:53,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:48:53,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:53,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:48:53,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:48:53,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:53,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 371 transitions, 5285 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:53,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:53,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:53,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:54,416 INFO L124 PetriNetUnfolderBase]: 2792/4336 cut-off events. [2024-06-27 20:48:54,416 INFO L125 PetriNetUnfolderBase]: For 298730/298730 co-relation queries the response was YES. [2024-06-27 20:48:54,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38323 conditions, 4336 events. 2792/4336 cut-off events. For 298730/298730 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 23863 event pairs, 520 based on Foata normal form. 2/4331 useless extension candidates. Maximal degree in co-relation 38198. Up to 4017 conditions per place. [2024-06-27 20:48:54,469 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 314 selfloop transitions, 81 changer transitions 0/399 dead transitions. [2024-06-27 20:48:54,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 399 transitions, 6389 flow [2024-06-27 20:48:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:48:54,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:48:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 20:48:54,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:48:54,470 INFO L175 Difference]: Start difference. First operand has 269 places, 371 transitions, 5285 flow. Second operand 9 states and 153 transitions. [2024-06-27 20:48:54,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 399 transitions, 6389 flow [2024-06-27 20:48:55,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 399 transitions, 6250 flow, removed 63 selfloop flow, removed 2 redundant places. [2024-06-27 20:48:55,153 INFO L231 Difference]: Finished difference. Result has 277 places, 376 transitions, 5470 flow [2024-06-27 20:48:55,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5165, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5470, PETRI_PLACES=277, PETRI_TRANSITIONS=376} [2024-06-27 20:48:55,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 236 predicate places. [2024-06-27 20:48:55,154 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 376 transitions, 5470 flow [2024-06-27 20:48:55,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:55,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:55,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:55,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:48:55,155 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:55,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:55,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1916833931, now seen corresponding path program 3 times [2024-06-27 20:48:55,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:55,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565846328] [2024-06-27 20:48:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:55,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:56,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:56,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565846328] [2024-06-27 20:48:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565846328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:56,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:48:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700193392] [2024-06-27 20:48:56,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:56,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:48:56,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:56,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:48:56,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:48:56,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:56,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 376 transitions, 5470 flow. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:56,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:56,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:56,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:48:57,282 INFO L124 PetriNetUnfolderBase]: 2786/4328 cut-off events. [2024-06-27 20:48:57,282 INFO L125 PetriNetUnfolderBase]: For 299203/299203 co-relation queries the response was YES. [2024-06-27 20:48:57,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38294 conditions, 4328 events. 2786/4328 cut-off events. For 299203/299203 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 23769 event pairs, 497 based on Foata normal form. 2/4323 useless extension candidates. Maximal degree in co-relation 38166. Up to 4110 conditions per place. [2024-06-27 20:48:57,335 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 345 selfloop transitions, 42 changer transitions 0/391 dead transitions. [2024-06-27 20:48:57,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 391 transitions, 6375 flow [2024-06-27 20:48:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:48:57,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:48:57,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 20:48:57,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43214285714285716 [2024-06-27 20:48:57,336 INFO L175 Difference]: Start difference. First operand has 277 places, 376 transitions, 5470 flow. Second operand 7 states and 121 transitions. [2024-06-27 20:48:57,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 391 transitions, 6375 flow [2024-06-27 20:48:57,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 391 transitions, 6031 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-27 20:48:57,942 INFO L231 Difference]: Finished difference. Result has 276 places, 377 transitions, 5260 flow [2024-06-27 20:48:57,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5140, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5260, PETRI_PLACES=276, PETRI_TRANSITIONS=377} [2024-06-27 20:48:57,943 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 235 predicate places. [2024-06-27 20:48:57,943 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 377 transitions, 5260 flow [2024-06-27 20:48:57,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:57,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:48:57,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:48:57,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:48:57,944 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:48:57,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:48:57,944 INFO L85 PathProgramCache]: Analyzing trace with hash -900939869, now seen corresponding path program 4 times [2024-06-27 20:48:57,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:48:57,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824826999] [2024-06-27 20:48:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:48:57,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:48:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:48:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:48:59,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:48:59,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824826999] [2024-06-27 20:48:59,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824826999] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:48:59,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:48:59,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:48:59,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50054298] [2024-06-27 20:48:59,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:48:59,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:48:59,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:48:59,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:48:59,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:48:59,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:48:59,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 377 transitions, 5260 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:48:59,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:48:59,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:48:59,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:00,222 INFO L124 PetriNetUnfolderBase]: 2823/4389 cut-off events. [2024-06-27 20:49:00,222 INFO L125 PetriNetUnfolderBase]: For 305074/305077 co-relation queries the response was YES. [2024-06-27 20:49:00,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38708 conditions, 4389 events. 2823/4389 cut-off events. For 305074/305077 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 24232 event pairs, 509 based on Foata normal form. 4/4387 useless extension candidates. Maximal degree in co-relation 38580. Up to 3971 conditions per place. [2024-06-27 20:49:00,274 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 326 selfloop transitions, 87 changer transitions 0/417 dead transitions. [2024-06-27 20:49:00,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 417 transitions, 6664 flow [2024-06-27 20:49:00,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:00,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 20:49:00,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 20:49:00,275 INFO L175 Difference]: Start difference. First operand has 276 places, 377 transitions, 5260 flow. Second operand 9 states and 160 transitions. [2024-06-27 20:49:00,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 417 transitions, 6664 flow [2024-06-27 20:49:00,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 417 transitions, 6581 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 20:49:00,989 INFO L231 Difference]: Finished difference. Result has 281 places, 386 transitions, 5643 flow [2024-06-27 20:49:00,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5179, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5643, PETRI_PLACES=281, PETRI_TRANSITIONS=386} [2024-06-27 20:49:00,989 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 240 predicate places. [2024-06-27 20:49:00,989 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 386 transitions, 5643 flow [2024-06-27 20:49:00,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:00,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:00,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:00,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:49:00,990 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:00,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:00,990 INFO L85 PathProgramCache]: Analyzing trace with hash 476921666, now seen corresponding path program 1 times [2024-06-27 20:49:00,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:00,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466635105] [2024-06-27 20:49:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:00,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:01,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:01,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466635105] [2024-06-27 20:49:01,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466635105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:01,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:01,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:01,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549393243] [2024-06-27 20:49:01,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:01,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:01,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:01,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:01,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:01,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:01,871 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 386 transitions, 5643 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:01,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:01,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:01,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:02,862 INFO L124 PetriNetUnfolderBase]: 3011/4651 cut-off events. [2024-06-27 20:49:02,862 INFO L125 PetriNetUnfolderBase]: For 347064/347067 co-relation queries the response was YES. [2024-06-27 20:49:02,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42248 conditions, 4651 events. 3011/4651 cut-off events. For 347064/347067 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 25638 event pairs, 513 based on Foata normal form. 10/4655 useless extension candidates. Maximal degree in co-relation 42119. Up to 4010 conditions per place. [2024-06-27 20:49:02,919 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 321 selfloop transitions, 113 changer transitions 0/438 dead transitions. [2024-06-27 20:49:02,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 438 transitions, 7279 flow [2024-06-27 20:49:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:02,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 20:49:02,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 20:49:02,920 INFO L175 Difference]: Start difference. First operand has 281 places, 386 transitions, 5643 flow. Second operand 9 states and 165 transitions. [2024-06-27 20:49:02,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 438 transitions, 7279 flow [2024-06-27 20:49:03,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 438 transitions, 7030 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-27 20:49:03,710 INFO L231 Difference]: Finished difference. Result has 287 places, 405 transitions, 6157 flow [2024-06-27 20:49:03,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5394, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6157, PETRI_PLACES=287, PETRI_TRANSITIONS=405} [2024-06-27 20:49:03,711 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 246 predicate places. [2024-06-27 20:49:03,711 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 405 transitions, 6157 flow [2024-06-27 20:49:03,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:03,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:03,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:03,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:49:03,711 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:03,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:03,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1215824033, now seen corresponding path program 5 times [2024-06-27 20:49:03,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:03,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162215712] [2024-06-27 20:49:03,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:03,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:03,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:04,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:04,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:04,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162215712] [2024-06-27 20:49:04,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162215712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:04,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:04,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:04,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788738940] [2024-06-27 20:49:04,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:04,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:04,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:04,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:04,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:04,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 405 transitions, 6157 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:04,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:04,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:04,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:05,987 INFO L124 PetriNetUnfolderBase]: 3021/4673 cut-off events. [2024-06-27 20:49:05,987 INFO L125 PetriNetUnfolderBase]: For 352485/352488 co-relation queries the response was YES. [2024-06-27 20:49:06,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43664 conditions, 4673 events. 3021/4673 cut-off events. For 352485/352488 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 25924 event pairs, 517 based on Foata normal form. 4/4671 useless extension candidates. Maximal degree in co-relation 43531. Up to 4245 conditions per place. [2024-06-27 20:49:06,049 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 343 selfloop transitions, 89 changer transitions 0/436 dead transitions. [2024-06-27 20:49:06,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 436 transitions, 7414 flow [2024-06-27 20:49:06,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:06,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 20:49:06,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2024-06-27 20:49:06,050 INFO L175 Difference]: Start difference. First operand has 287 places, 405 transitions, 6157 flow. Second operand 9 states and 158 transitions. [2024-06-27 20:49:06,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 436 transitions, 7414 flow [2024-06-27 20:49:06,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 436 transitions, 7207 flow, removed 73 selfloop flow, removed 5 redundant places. [2024-06-27 20:49:06,780 INFO L231 Difference]: Finished difference. Result has 291 places, 408 transitions, 6215 flow [2024-06-27 20:49:06,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=5952, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6215, PETRI_PLACES=291, PETRI_TRANSITIONS=408} [2024-06-27 20:49:06,780 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 250 predicate places. [2024-06-27 20:49:06,780 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 408 transitions, 6215 flow [2024-06-27 20:49:06,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:06,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:06,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:06,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:49:06,781 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:06,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:06,781 INFO L85 PathProgramCache]: Analyzing trace with hash 481570240, now seen corresponding path program 1 times [2024-06-27 20:49:06,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:06,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682500285] [2024-06-27 20:49:06,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:06,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:06,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682500285] [2024-06-27 20:49:07,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682500285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:07,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:07,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:07,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968701830] [2024-06-27 20:49:07,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:07,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:07,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:07,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:07,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:07,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:07,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 408 transitions, 6215 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:07,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:07,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:07,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:08,857 INFO L124 PetriNetUnfolderBase]: 3065/4737 cut-off events. [2024-06-27 20:49:08,857 INFO L125 PetriNetUnfolderBase]: For 370230/370230 co-relation queries the response was YES. [2024-06-27 20:49:08,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44105 conditions, 4737 events. 3065/4737 cut-off events. For 370230/370230 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 26325 event pairs, 533 based on Foata normal form. 12/4742 useless extension candidates. Maximal degree in co-relation 43971. Up to 4375 conditions per place. [2024-06-27 20:49:08,920 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 362 selfloop transitions, 71 changer transitions 0/437 dead transitions. [2024-06-27 20:49:08,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 437 transitions, 7431 flow [2024-06-27 20:49:08,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:49:08,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:49:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 20:49:08,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-27 20:49:08,921 INFO L175 Difference]: Start difference. First operand has 291 places, 408 transitions, 6215 flow. Second operand 8 states and 143 transitions. [2024-06-27 20:49:08,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 437 transitions, 7431 flow [2024-06-27 20:49:09,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 437 transitions, 7237 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 20:49:09,671 INFO L231 Difference]: Finished difference. Result has 293 places, 409 transitions, 6205 flow [2024-06-27 20:49:09,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6021, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6205, PETRI_PLACES=293, PETRI_TRANSITIONS=409} [2024-06-27 20:49:09,671 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 252 predicate places. [2024-06-27 20:49:09,671 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 409 transitions, 6205 flow [2024-06-27 20:49:09,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:09,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:09,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:09,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:49:09,672 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:09,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:09,672 INFO L85 PathProgramCache]: Analyzing trace with hash -895969732, now seen corresponding path program 2 times [2024-06-27 20:49:09,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:09,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701733837] [2024-06-27 20:49:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:09,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:10,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:10,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:10,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701733837] [2024-06-27 20:49:10,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701733837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:10,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:10,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:10,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027116105] [2024-06-27 20:49:10,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:10,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:10,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:10,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:10,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:10,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:10,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 409 transitions, 6205 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:10,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:10,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:10,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:11,669 INFO L124 PetriNetUnfolderBase]: 3105/4795 cut-off events. [2024-06-27 20:49:11,669 INFO L125 PetriNetUnfolderBase]: For 372979/372982 co-relation queries the response was YES. [2024-06-27 20:49:11,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44808 conditions, 4795 events. 3105/4795 cut-off events. For 372979/372982 co-relation queries the response was YES. Maximal size of possible extension queue 316. Compared 26636 event pairs, 537 based on Foata normal form. 10/4799 useless extension candidates. Maximal degree in co-relation 44673. Up to 4470 conditions per place. [2024-06-27 20:49:11,732 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 365 selfloop transitions, 70 changer transitions 0/439 dead transitions. [2024-06-27 20:49:11,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 439 transitions, 7413 flow [2024-06-27 20:49:11,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:11,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 20:49:11,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 20:49:11,733 INFO L175 Difference]: Start difference. First operand has 293 places, 409 transitions, 6205 flow. Second operand 9 states and 156 transitions. [2024-06-27 20:49:11,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 439 transitions, 7413 flow [2024-06-27 20:49:12,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 439 transitions, 7269 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 20:49:12,481 INFO L231 Difference]: Finished difference. Result has 296 places, 413 transitions, 6340 flow [2024-06-27 20:49:12,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6061, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6340, PETRI_PLACES=296, PETRI_TRANSITIONS=413} [2024-06-27 20:49:12,482 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 255 predicate places. [2024-06-27 20:49:12,482 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 413 transitions, 6340 flow [2024-06-27 20:49:12,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:12,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:12,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:12,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:49:12,483 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:12,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash -895969949, now seen corresponding path program 6 times [2024-06-27 20:49:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:12,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689387672] [2024-06-27 20:49:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:12,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:13,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:13,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:13,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689387672] [2024-06-27 20:49:13,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689387672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:13,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:13,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:13,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237573281] [2024-06-27 20:49:13,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:13,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:13,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:13,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:13,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:13,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 413 transitions, 6340 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:13,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:13,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:13,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:15,079 INFO L124 PetriNetUnfolderBase]: 3201/4941 cut-off events. [2024-06-27 20:49:15,079 INFO L125 PetriNetUnfolderBase]: For 372511/372511 co-relation queries the response was YES. [2024-06-27 20:49:15,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46546 conditions, 4941 events. 3201/4941 cut-off events. For 372511/372511 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 27582 event pairs, 560 based on Foata normal form. 2/4938 useless extension candidates. Maximal degree in co-relation 46410. Up to 4698 conditions per place. [2024-06-27 20:49:15,145 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 419 selfloop transitions, 45 changer transitions 0/468 dead transitions. [2024-06-27 20:49:15,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 468 transitions, 8108 flow [2024-06-27 20:49:15,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 20:49:15,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4022727272727273 [2024-06-27 20:49:15,146 INFO L175 Difference]: Start difference. First operand has 296 places, 413 transitions, 6340 flow. Second operand 11 states and 177 transitions. [2024-06-27 20:49:15,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 468 transitions, 8108 flow [2024-06-27 20:49:16,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 468 transitions, 7844 flow, removed 42 selfloop flow, removed 8 redundant places. [2024-06-27 20:49:16,047 INFO L231 Difference]: Finished difference. Result has 303 places, 439 transitions, 6876 flow [2024-06-27 20:49:16,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6121, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6876, PETRI_PLACES=303, PETRI_TRANSITIONS=439} [2024-06-27 20:49:16,047 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 262 predicate places. [2024-06-27 20:49:16,047 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 439 transitions, 6876 flow [2024-06-27 20:49:16,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:16,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:16,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:16,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:49:16,048 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:16,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:16,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1583840664, now seen corresponding path program 2 times [2024-06-27 20:49:16,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:16,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885646523] [2024-06-27 20:49:16,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:16,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:16,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:16,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885646523] [2024-06-27 20:49:16,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885646523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:16,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:16,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:16,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055200020] [2024-06-27 20:49:16,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:16,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:16,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:16,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:16,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:17,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:17,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 439 transitions, 6876 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:17,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:17,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:17,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:18,251 INFO L124 PetriNetUnfolderBase]: 3253/5020 cut-off events. [2024-06-27 20:49:18,251 INFO L125 PetriNetUnfolderBase]: For 394933/394933 co-relation queries the response was YES. [2024-06-27 20:49:18,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47037 conditions, 5020 events. 3253/5020 cut-off events. For 394933/394933 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 28157 event pairs, 557 based on Foata normal form. 12/5024 useless extension candidates. Maximal degree in co-relation 46897. Up to 4715 conditions per place. [2024-06-27 20:49:18,309 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 414 selfloop transitions, 43 changer transitions 0/461 dead transitions. [2024-06-27 20:49:18,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 461 transitions, 8066 flow [2024-06-27 20:49:18,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:49:18,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:49:18,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2024-06-27 20:49:18,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392857142857143 [2024-06-27 20:49:18,310 INFO L175 Difference]: Start difference. First operand has 303 places, 439 transitions, 6876 flow. Second operand 7 states and 123 transitions. [2024-06-27 20:49:18,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 461 transitions, 8066 flow [2024-06-27 20:49:19,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 461 transitions, 7906 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-06-27 20:49:19,127 INFO L231 Difference]: Finished difference. Result has 305 places, 442 transitions, 6862 flow [2024-06-27 20:49:19,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6716, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6862, PETRI_PLACES=305, PETRI_TRANSITIONS=442} [2024-06-27 20:49:19,127 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 264 predicate places. [2024-06-27 20:49:19,127 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 442 transitions, 6862 flow [2024-06-27 20:49:19,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:19,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:19,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:19,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:49:19,128 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:19,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:19,128 INFO L85 PathProgramCache]: Analyzing trace with hash -112258624, now seen corresponding path program 1 times [2024-06-27 20:49:19,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:19,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382037273] [2024-06-27 20:49:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:19,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:20,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:20,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:20,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382037273] [2024-06-27 20:49:20,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382037273] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:20,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:20,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:20,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375799500] [2024-06-27 20:49:20,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:20,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:20,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:20,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:20,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 442 transitions, 6862 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:20,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:20,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:20,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:21,486 INFO L124 PetriNetUnfolderBase]: 3263/5030 cut-off events. [2024-06-27 20:49:21,487 INFO L125 PetriNetUnfolderBase]: For 382737/382737 co-relation queries the response was YES. [2024-06-27 20:49:21,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47315 conditions, 5030 events. 3263/5030 cut-off events. For 382737/382737 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 28177 event pairs, 564 based on Foata normal form. 2/5024 useless extension candidates. Maximal degree in co-relation 47176. Up to 4728 conditions per place. [2024-06-27 20:49:21,544 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 392 selfloop transitions, 65 changer transitions 0/461 dead transitions. [2024-06-27 20:49:21,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 461 transitions, 8078 flow [2024-06-27 20:49:21,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:49:21,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:49:21,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 122 transitions. [2024-06-27 20:49:21,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357142857142857 [2024-06-27 20:49:21,545 INFO L175 Difference]: Start difference. First operand has 305 places, 442 transitions, 6862 flow. Second operand 7 states and 122 transitions. [2024-06-27 20:49:21,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 461 transitions, 8078 flow [2024-06-27 20:49:22,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 461 transitions, 7990 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 20:49:22,545 INFO L231 Difference]: Finished difference. Result has 307 places, 446 transitions, 7100 flow [2024-06-27 20:49:22,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6774, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7100, PETRI_PLACES=307, PETRI_TRANSITIONS=446} [2024-06-27 20:49:22,545 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 266 predicate places. [2024-06-27 20:49:22,546 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 446 transitions, 7100 flow [2024-06-27 20:49:22,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:22,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:22,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:22,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:49:22,546 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:22,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:22,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1702114873, now seen corresponding path program 7 times [2024-06-27 20:49:22,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:22,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766578646] [2024-06-27 20:49:22,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:22,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:23,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:23,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:23,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766578646] [2024-06-27 20:49:23,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766578646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:23,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:23,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:23,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216538879] [2024-06-27 20:49:23,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:23,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:23,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:23,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:23,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 446 transitions, 7100 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:23,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:23,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:23,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:24,680 INFO L124 PetriNetUnfolderBase]: 3273/5056 cut-off events. [2024-06-27 20:49:24,680 INFO L125 PetriNetUnfolderBase]: For 395371/395374 co-relation queries the response was YES. [2024-06-27 20:49:24,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48039 conditions, 5056 events. 3273/5056 cut-off events. For 395371/395374 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 28417 event pairs, 554 based on Foata normal form. 4/5053 useless extension candidates. Maximal degree in co-relation 47899. Up to 4812 conditions per place. [2024-06-27 20:49:24,752 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 415 selfloop transitions, 46 changer transitions 0/465 dead transitions. [2024-06-27 20:49:24,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 465 transitions, 8232 flow [2024-06-27 20:49:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:49:24,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:49:24,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 20:49:24,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 20:49:24,754 INFO L175 Difference]: Start difference. First operand has 307 places, 446 transitions, 7100 flow. Second operand 8 states and 133 transitions. [2024-06-27 20:49:24,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 465 transitions, 8232 flow [2024-06-27 20:49:25,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 465 transitions, 8024 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-27 20:49:25,788 INFO L231 Difference]: Finished difference. Result has 310 places, 449 transitions, 7084 flow [2024-06-27 20:49:25,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6892, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7084, PETRI_PLACES=310, PETRI_TRANSITIONS=449} [2024-06-27 20:49:25,789 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 269 predicate places. [2024-06-27 20:49:25,789 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 449 transitions, 7084 flow [2024-06-27 20:49:25,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:25,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:25,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:25,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:49:25,789 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:25,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:25,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1693833502, now seen corresponding path program 3 times [2024-06-27 20:49:25,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:25,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860843254] [2024-06-27 20:49:25,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:25,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:26,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:26,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860843254] [2024-06-27 20:49:26,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860843254] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:26,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:26,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:26,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892789241] [2024-06-27 20:49:26,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:26,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:26,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:26,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:26,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:26,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:26,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 449 transitions, 7084 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:26,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:26,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:27,994 INFO L124 PetriNetUnfolderBase]: 3309/5104 cut-off events. [2024-06-27 20:49:27,994 INFO L125 PetriNetUnfolderBase]: For 424881/424881 co-relation queries the response was YES. [2024-06-27 20:49:28,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48689 conditions, 5104 events. 3309/5104 cut-off events. For 424881/424881 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 28682 event pairs, 566 based on Foata normal form. 10/5106 useless extension candidates. Maximal degree in co-relation 48548. Up to 4727 conditions per place. [2024-06-27 20:49:28,066 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 412 selfloop transitions, 54 changer transitions 0/470 dead transitions. [2024-06-27 20:49:28,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 470 transitions, 8332 flow [2024-06-27 20:49:28,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:49:28,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:49:28,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 124 transitions. [2024-06-27 20:49:28,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44285714285714284 [2024-06-27 20:49:28,067 INFO L175 Difference]: Start difference. First operand has 310 places, 449 transitions, 7084 flow. Second operand 7 states and 124 transitions. [2024-06-27 20:49:28,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 470 transitions, 8332 flow [2024-06-27 20:49:28,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 470 transitions, 8174 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-06-27 20:49:28,987 INFO L231 Difference]: Finished difference. Result has 311 places, 450 transitions, 7088 flow [2024-06-27 20:49:28,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6926, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7088, PETRI_PLACES=311, PETRI_TRANSITIONS=450} [2024-06-27 20:49:28,987 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 270 predicate places. [2024-06-27 20:49:28,987 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 450 transitions, 7088 flow [2024-06-27 20:49:28,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:28,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:28,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:28,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:49:28,988 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:28,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:28,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1693536832, now seen corresponding path program 4 times [2024-06-27 20:49:28,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:28,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263478201] [2024-06-27 20:49:28,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:28,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:29,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:29,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263478201] [2024-06-27 20:49:29,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263478201] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:29,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:29,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891174695] [2024-06-27 20:49:29,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:29,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:29,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:29,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:29,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:29,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 450 transitions, 7088 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:29,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:29,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:29,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:31,272 INFO L124 PetriNetUnfolderBase]: 3373/5208 cut-off events. [2024-06-27 20:49:31,272 INFO L125 PetriNetUnfolderBase]: For 445761/445761 co-relation queries the response was YES. [2024-06-27 20:49:31,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49894 conditions, 5208 events. 3373/5208 cut-off events. For 445761/445761 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 29452 event pairs, 556 based on Foata normal form. 12/5212 useless extension candidates. Maximal degree in co-relation 49752. Up to 4872 conditions per place. [2024-06-27 20:49:31,347 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 435 selfloop transitions, 34 changer transitions 0/473 dead transitions. [2024-06-27 20:49:31,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 473 transitions, 8402 flow [2024-06-27 20:49:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:49:31,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:49:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 126 transitions. [2024-06-27 20:49:31,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 20:49:31,348 INFO L175 Difference]: Start difference. First operand has 311 places, 450 transitions, 7088 flow. Second operand 7 states and 126 transitions. [2024-06-27 20:49:31,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 473 transitions, 8402 flow [2024-06-27 20:49:32,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 473 transitions, 8292 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 20:49:32,497 INFO L231 Difference]: Finished difference. Result has 314 places, 453 transitions, 7132 flow [2024-06-27 20:49:32,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6980, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7132, PETRI_PLACES=314, PETRI_TRANSITIONS=453} [2024-06-27 20:49:32,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 273 predicate places. [2024-06-27 20:49:32,498 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 453 transitions, 7132 flow [2024-06-27 20:49:32,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:32,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:32,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:32,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:49:32,498 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:32,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1215319612, now seen corresponding path program 3 times [2024-06-27 20:49:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:32,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070674286] [2024-06-27 20:49:32,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:32,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:32,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:33,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:33,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070674286] [2024-06-27 20:49:33,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070674286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:33,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:33,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:33,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808932017] [2024-06-27 20:49:33,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:33,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:33,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:33,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:33,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:33,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 453 transitions, 7132 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:33,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:33,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:33,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:34,729 INFO L124 PetriNetUnfolderBase]: 3349/5180 cut-off events. [2024-06-27 20:49:34,729 INFO L125 PetriNetUnfolderBase]: For 417261/417264 co-relation queries the response was YES. [2024-06-27 20:49:34,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49122 conditions, 5180 events. 3349/5180 cut-off events. For 417261/417264 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 29368 event pairs, 580 based on Foata normal form. 10/5183 useless extension candidates. Maximal degree in co-relation 48978. Up to 4896 conditions per place. [2024-06-27 20:49:34,804 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 415 selfloop transitions, 52 changer transitions 0/471 dead transitions. [2024-06-27 20:49:34,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 471 transitions, 8210 flow [2024-06-27 20:49:34,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:49:34,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:49:34,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 20:49:34,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:49:34,805 INFO L175 Difference]: Start difference. First operand has 314 places, 453 transitions, 7132 flow. Second operand 8 states and 136 transitions. [2024-06-27 20:49:34,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 471 transitions, 8210 flow [2024-06-27 20:49:35,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 471 transitions, 8080 flow, removed 38 selfloop flow, removed 4 redundant places. [2024-06-27 20:49:35,904 INFO L231 Difference]: Finished difference. Result has 318 places, 453 transitions, 7119 flow [2024-06-27 20:49:35,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7002, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7119, PETRI_PLACES=318, PETRI_TRANSITIONS=453} [2024-06-27 20:49:35,905 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 277 predicate places. [2024-06-27 20:49:35,905 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 453 transitions, 7119 flow [2024-06-27 20:49:35,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:35,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:35,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:35,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:49:35,905 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:35,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1483888428, now seen corresponding path program 4 times [2024-06-27 20:49:35,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:35,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489635605] [2024-06-27 20:49:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:36,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:36,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:36,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489635605] [2024-06-27 20:49:36,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489635605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:36,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:36,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:36,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065153293] [2024-06-27 20:49:36,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:36,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:36,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:36,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:36,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:36,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:36,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 453 transitions, 7119 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:36,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:36,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:36,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:38,204 INFO L124 PetriNetUnfolderBase]: 3375/5214 cut-off events. [2024-06-27 20:49:38,204 INFO L125 PetriNetUnfolderBase]: For 415165/415165 co-relation queries the response was YES. [2024-06-27 20:49:38,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49596 conditions, 5214 events. 3375/5214 cut-off events. For 415165/415165 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 29595 event pairs, 561 based on Foata normal form. 2/5208 useless extension candidates. Maximal degree in co-relation 49451. Up to 4703 conditions per place. [2024-06-27 20:49:38,277 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 393 selfloop transitions, 99 changer transitions 0/496 dead transitions. [2024-06-27 20:49:38,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 496 transitions, 8700 flow [2024-06-27 20:49:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 20:49:38,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 20:49:38,278 INFO L175 Difference]: Start difference. First operand has 318 places, 453 transitions, 7119 flow. Second operand 9 states and 159 transitions. [2024-06-27 20:49:38,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 496 transitions, 8700 flow [2024-06-27 20:49:39,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 496 transitions, 8569 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-27 20:49:39,586 INFO L231 Difference]: Finished difference. Result has 323 places, 472 transitions, 7606 flow [2024-06-27 20:49:39,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=6990, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7606, PETRI_PLACES=323, PETRI_TRANSITIONS=472} [2024-06-27 20:49:39,586 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 282 predicate places. [2024-06-27 20:49:39,587 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 472 transitions, 7606 flow [2024-06-27 20:49:39,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:39,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:39,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:39,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:49:39,587 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:39,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:39,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1103976701, now seen corresponding path program 8 times [2024-06-27 20:49:39,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:39,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898087442] [2024-06-27 20:49:39,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:39,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:39,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:40,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:40,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:40,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898087442] [2024-06-27 20:49:40,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898087442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:40,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:40,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:40,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212729296] [2024-06-27 20:49:40,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:40,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:40,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:40,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:40,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 472 transitions, 7606 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:40,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:40,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:40,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:42,439 INFO L124 PetriNetUnfolderBase]: 3535/5471 cut-off events. [2024-06-27 20:49:42,439 INFO L125 PetriNetUnfolderBase]: For 466369/466372 co-relation queries the response was YES. [2024-06-27 20:49:42,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53556 conditions, 5471 events. 3535/5471 cut-off events. For 466369/466372 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 31354 event pairs, 511 based on Foata normal form. 8/5472 useless extension candidates. Maximal degree in co-relation 53409. Up to 4703 conditions per place. [2024-06-27 20:49:42,522 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 395 selfloop transitions, 136 changer transitions 0/535 dead transitions. [2024-06-27 20:49:42,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 535 transitions, 9757 flow [2024-06-27 20:49:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:49:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:49:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 20:49:42,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45227272727272727 [2024-06-27 20:49:42,523 INFO L175 Difference]: Start difference. First operand has 323 places, 472 transitions, 7606 flow. Second operand 11 states and 199 transitions. [2024-06-27 20:49:42,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 535 transitions, 9757 flow [2024-06-27 20:49:44,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 535 transitions, 9560 flow, removed 69 selfloop flow, removed 4 redundant places. [2024-06-27 20:49:44,090 INFO L231 Difference]: Finished difference. Result has 331 places, 502 transitions, 8346 flow [2024-06-27 20:49:44,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7409, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8346, PETRI_PLACES=331, PETRI_TRANSITIONS=502} [2024-06-27 20:49:44,090 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 290 predicate places. [2024-06-27 20:49:44,090 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 502 transitions, 8346 flow [2024-06-27 20:49:44,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:44,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:44,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:49:44,091 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:44,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:44,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1104305208, now seen corresponding path program 5 times [2024-06-27 20:49:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:44,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941536196] [2024-06-27 20:49:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:44,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:44,939 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 20:49:44,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941536196] [2024-06-27 20:49:44,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941536196] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:44,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:44,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:44,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526971399] [2024-06-27 20:49:44,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:44,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:44,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:44,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:44,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:45,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:45,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 502 transitions, 8346 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:45,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:45,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:45,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:46,419 INFO L124 PetriNetUnfolderBase]: 3555/5493 cut-off events. [2024-06-27 20:49:46,419 INFO L125 PetriNetUnfolderBase]: For 482550/482553 co-relation queries the response was YES. [2024-06-27 20:49:46,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55040 conditions, 5493 events. 3555/5493 cut-off events. For 482550/482553 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 31520 event pairs, 572 based on Foata normal form. 6/5492 useless extension candidates. Maximal degree in co-relation 54890. Up to 4958 conditions per place. [2024-06-27 20:49:46,499 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 432 selfloop transitions, 94 changer transitions 0/530 dead transitions. [2024-06-27 20:49:46,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 530 transitions, 9646 flow [2024-06-27 20:49:46,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:46,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 20:49:46,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 20:49:46,500 INFO L175 Difference]: Start difference. First operand has 331 places, 502 transitions, 8346 flow. Second operand 9 states and 160 transitions. [2024-06-27 20:49:46,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 530 transitions, 9646 flow [2024-06-27 20:49:47,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 530 transitions, 9296 flow, removed 142 selfloop flow, removed 4 redundant places. [2024-06-27 20:49:47,833 INFO L231 Difference]: Finished difference. Result has 336 places, 505 transitions, 8304 flow [2024-06-27 20:49:47,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=7996, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8304, PETRI_PLACES=336, PETRI_TRANSITIONS=505} [2024-06-27 20:49:47,833 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 295 predicate places. [2024-06-27 20:49:47,833 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 505 transitions, 8304 flow [2024-06-27 20:49:47,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:47,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:47,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:47,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:49:47,834 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:47,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:47,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1157744821, now seen corresponding path program 9 times [2024-06-27 20:49:47,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:47,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091370900] [2024-06-27 20:49:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:47,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:48,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:48,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:48,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091370900] [2024-06-27 20:49:48,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091370900] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:48,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:48,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:48,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840238367] [2024-06-27 20:49:48,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:48,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:48,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:48,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:48,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:48,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:48,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 505 transitions, 8304 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:48,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:48,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:48,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:50,435 INFO L124 PetriNetUnfolderBase]: 3543/5483 cut-off events. [2024-06-27 20:49:50,435 INFO L125 PetriNetUnfolderBase]: For 464097/464100 co-relation queries the response was YES. [2024-06-27 20:49:50,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54245 conditions, 5483 events. 3543/5483 cut-off events. For 464097/464100 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 31455 event pairs, 574 based on Foata normal form. 6/5482 useless extension candidates. Maximal degree in co-relation 54094. Up to 4907 conditions per place. [2024-06-27 20:49:50,515 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 426 selfloop transitions, 105 changer transitions 0/535 dead transitions. [2024-06-27 20:49:50,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 535 transitions, 9583 flow [2024-06-27 20:49:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:50,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 20:49:50,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 20:49:50,519 INFO L175 Difference]: Start difference. First operand has 336 places, 505 transitions, 8304 flow. Second operand 9 states and 159 transitions. [2024-06-27 20:49:50,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 535 transitions, 9583 flow [2024-06-27 20:49:51,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 535 transitions, 9311 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-27 20:49:51,817 INFO L231 Difference]: Finished difference. Result has 340 places, 512 transitions, 8433 flow [2024-06-27 20:49:51,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8034, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8433, PETRI_PLACES=340, PETRI_TRANSITIONS=512} [2024-06-27 20:49:51,817 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 299 predicate places. [2024-06-27 20:49:51,817 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 512 transitions, 8433 flow [2024-06-27 20:49:51,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:51,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:51,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:51,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:49:51,818 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:51,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:51,818 INFO L85 PathProgramCache]: Analyzing trace with hash 455541613, now seen corresponding path program 10 times [2024-06-27 20:49:51,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:51,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149551944] [2024-06-27 20:49:51,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:51,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:52,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:52,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:52,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149551944] [2024-06-27 20:49:52,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149551944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:52,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:52,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:52,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001763131] [2024-06-27 20:49:52,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:52,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:52,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:52,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:52,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:53,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:53,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 512 transitions, 8433 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:53,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:53,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:53,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:54,586 INFO L124 PetriNetUnfolderBase]: 3585/5545 cut-off events. [2024-06-27 20:49:54,586 INFO L125 PetriNetUnfolderBase]: For 485455/485458 co-relation queries the response was YES. [2024-06-27 20:49:54,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55806 conditions, 5545 events. 3585/5545 cut-off events. For 485455/485458 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 31945 event pairs, 562 based on Foata normal form. 4/5542 useless extension candidates. Maximal degree in co-relation 55652. Up to 4671 conditions per place. [2024-06-27 20:49:54,668 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 372 selfloop transitions, 174 changer transitions 0/550 dead transitions. [2024-06-27 20:49:54,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 550 transitions, 10505 flow [2024-06-27 20:49:54,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:54,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:54,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 20:49:54,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 20:49:54,669 INFO L175 Difference]: Start difference. First operand has 340 places, 512 transitions, 8433 flow. Second operand 9 states and 160 transitions. [2024-06-27 20:49:54,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 550 transitions, 10505 flow [2024-06-27 20:49:56,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 550 transitions, 10219 flow, removed 70 selfloop flow, removed 5 redundant places. [2024-06-27 20:49:56,027 INFO L231 Difference]: Finished difference. Result has 345 places, 525 transitions, 9048 flow [2024-06-27 20:49:56,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8199, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9048, PETRI_PLACES=345, PETRI_TRANSITIONS=525} [2024-06-27 20:49:56,028 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 304 predicate places. [2024-06-27 20:49:56,028 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 525 transitions, 9048 flow [2024-06-27 20:49:56,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:56,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:49:56,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:49:56,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:49:56,028 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:49:56,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:49:56,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1488090168, now seen corresponding path program 6 times [2024-06-27 20:49:56,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:49:56,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466979726] [2024-06-27 20:49:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:49:56,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:49:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:49:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:49:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:49:56,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466979726] [2024-06-27 20:49:56,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466979726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:49:56,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:49:56,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:49:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000944505] [2024-06-27 20:49:56,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:49:56,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:49:56,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:49:56,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:49:56,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:49:57,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:49:57,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 525 transitions, 9048 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:49:57,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:49:57,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:49:57,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:49:58,550 INFO L124 PetriNetUnfolderBase]: 3667/5652 cut-off events. [2024-06-27 20:49:58,550 INFO L125 PetriNetUnfolderBase]: For 539350/539353 co-relation queries the response was YES. [2024-06-27 20:49:58,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58851 conditions, 5652 events. 3667/5652 cut-off events. For 539350/539353 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 32501 event pairs, 572 based on Foata normal form. 4/5649 useless extension candidates. Maximal degree in co-relation 58696. Up to 4609 conditions per place. [2024-06-27 20:49:58,631 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 387 selfloop transitions, 191 changer transitions 0/582 dead transitions. [2024-06-27 20:49:58,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 582 transitions, 11588 flow [2024-06-27 20:49:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:49:58,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:49:58,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 20:49:58,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 20:49:58,632 INFO L175 Difference]: Start difference. First operand has 345 places, 525 transitions, 9048 flow. Second operand 9 states and 164 transitions. [2024-06-27 20:49:58,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 582 transitions, 11588 flow [2024-06-27 20:50:00,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 582 transitions, 11308 flow, removed 95 selfloop flow, removed 4 redundant places. [2024-06-27 20:50:00,071 INFO L231 Difference]: Finished difference. Result has 352 places, 556 transitions, 10119 flow [2024-06-27 20:50:00,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=8780, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=525, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10119, PETRI_PLACES=352, PETRI_TRANSITIONS=556} [2024-06-27 20:50:00,072 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 311 predicate places. [2024-06-27 20:50:00,072 INFO L495 AbstractCegarLoop]: Abstraction has has 352 places, 556 transitions, 10119 flow [2024-06-27 20:50:00,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:00,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:00,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:00,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:50:00,073 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:00,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:00,073 INFO L85 PathProgramCache]: Analyzing trace with hash -773692734, now seen corresponding path program 7 times [2024-06-27 20:50:00,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:00,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384649513] [2024-06-27 20:50:00,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:00,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:00,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384649513] [2024-06-27 20:50:00,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384649513] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:00,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:00,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:00,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767996175] [2024-06-27 20:50:00,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:00,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:00,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:00,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:00,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:01,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:01,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 556 transitions, 10119 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:01,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:01,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:01,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:02,584 INFO L124 PetriNetUnfolderBase]: 3661/5644 cut-off events. [2024-06-27 20:50:02,585 INFO L125 PetriNetUnfolderBase]: For 543940/543943 co-relation queries the response was YES. [2024-06-27 20:50:02,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59865 conditions, 5644 events. 3661/5644 cut-off events. For 543940/543943 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 32477 event pairs, 562 based on Foata normal form. 4/5641 useless extension candidates. Maximal degree in co-relation 59706. Up to 4604 conditions per place. [2024-06-27 20:50:02,663 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 384 selfloop transitions, 193 changer transitions 0/581 dead transitions. [2024-06-27 20:50:02,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 581 transitions, 11730 flow [2024-06-27 20:50:02,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:50:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:50:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 20:50:02,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 20:50:02,664 INFO L175 Difference]: Start difference. First operand has 352 places, 556 transitions, 10119 flow. Second operand 9 states and 164 transitions. [2024-06-27 20:50:02,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 581 transitions, 11730 flow [2024-06-27 20:50:03,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 581 transitions, 11408 flow, removed 150 selfloop flow, removed 2 redundant places. [2024-06-27 20:50:03,949 INFO L231 Difference]: Finished difference. Result has 359 places, 556 transitions, 10189 flow [2024-06-27 20:50:03,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9797, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10189, PETRI_PLACES=359, PETRI_TRANSITIONS=556} [2024-06-27 20:50:03,950 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 318 predicate places. [2024-06-27 20:50:03,950 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 556 transitions, 10189 flow [2024-06-27 20:50:03,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:03,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:03,950 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:03,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:50:03,950 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:03,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:03,951 INFO L85 PathProgramCache]: Analyzing trace with hash 366925831, now seen corresponding path program 11 times [2024-06-27 20:50:03,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:03,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934287397] [2024-06-27 20:50:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:03,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:05,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:05,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934287397] [2024-06-27 20:50:05,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934287397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:05,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:05,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:05,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095727689] [2024-06-27 20:50:05,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:05,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:05,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:05,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:05,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:05,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:05,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 556 transitions, 10189 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:05,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:05,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:05,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:06,868 INFO L124 PetriNetUnfolderBase]: 3687/5692 cut-off events. [2024-06-27 20:50:06,868 INFO L125 PetriNetUnfolderBase]: For 556418/556421 co-relation queries the response was YES. [2024-06-27 20:50:06,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60785 conditions, 5692 events. 3687/5692 cut-off events. For 556418/556421 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 32851 event pairs, 601 based on Foata normal form. 4/5689 useless extension candidates. Maximal degree in co-relation 60624. Up to 5313 conditions per place. [2024-06-27 20:50:06,945 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 520 selfloop transitions, 72 changer transitions 0/596 dead transitions. [2024-06-27 20:50:06,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 596 transitions, 11981 flow [2024-06-27 20:50:06,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:50:06,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:50:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 20:50:06,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:50:06,946 INFO L175 Difference]: Start difference. First operand has 359 places, 556 transitions, 10189 flow. Second operand 10 states and 175 transitions. [2024-06-27 20:50:06,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 596 transitions, 11981 flow [2024-06-27 20:50:08,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 596 transitions, 11661 flow, removed 43 selfloop flow, removed 5 redundant places. [2024-06-27 20:50:08,538 INFO L231 Difference]: Finished difference. Result has 365 places, 563 transitions, 10311 flow [2024-06-27 20:50:08,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9869, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10311, PETRI_PLACES=365, PETRI_TRANSITIONS=563} [2024-06-27 20:50:08,538 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 324 predicate places. [2024-06-27 20:50:08,538 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 563 transitions, 10311 flow [2024-06-27 20:50:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:08,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:08,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:08,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:50:08,539 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:08,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:08,539 INFO L85 PathProgramCache]: Analyzing trace with hash 371722771, now seen corresponding path program 12 times [2024-06-27 20:50:08,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:08,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554111998] [2024-06-27 20:50:08,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:08,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:09,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:09,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:09,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554111998] [2024-06-27 20:50:09,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554111998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:09,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:09,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:09,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515786669] [2024-06-27 20:50:09,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:09,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:09,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:09,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:09,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:09,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:09,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 563 transitions, 10311 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:09,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:09,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:09,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:11,759 INFO L124 PetriNetUnfolderBase]: 3681/5684 cut-off events. [2024-06-27 20:50:11,759 INFO L125 PetriNetUnfolderBase]: For 557595/557598 co-relation queries the response was YES. [2024-06-27 20:50:11,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60005 conditions, 5684 events. 3681/5684 cut-off events. For 557595/557598 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 32773 event pairs, 603 based on Foata normal form. 4/5681 useless extension candidates. Maximal degree in co-relation 59842. Up to 5308 conditions per place. [2024-06-27 20:50:11,849 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 518 selfloop transitions, 71 changer transitions 0/593 dead transitions. [2024-06-27 20:50:11,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 593 transitions, 11815 flow [2024-06-27 20:50:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:50:11,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:50:11,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 172 transitions. [2024-06-27 20:50:11,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43 [2024-06-27 20:50:11,850 INFO L175 Difference]: Start difference. First operand has 365 places, 563 transitions, 10311 flow. Second operand 10 states and 172 transitions. [2024-06-27 20:50:11,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 593 transitions, 11815 flow [2024-06-27 20:50:13,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 593 transitions, 11407 flow, removed 140 selfloop flow, removed 7 redundant places. [2024-06-27 20:50:13,776 INFO L231 Difference]: Finished difference. Result has 368 places, 563 transitions, 10051 flow [2024-06-27 20:50:13,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9903, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10051, PETRI_PLACES=368, PETRI_TRANSITIONS=563} [2024-06-27 20:50:13,777 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 327 predicate places. [2024-06-27 20:50:13,777 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 563 transitions, 10051 flow [2024-06-27 20:50:13,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:13,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:13,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:13,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:50:13,777 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:13,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:13,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1665663146, now seen corresponding path program 8 times [2024-06-27 20:50:13,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:13,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699923295] [2024-06-27 20:50:13,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:13,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:14,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:14,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699923295] [2024-06-27 20:50:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699923295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:14,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:14,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:14,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640590868] [2024-06-27 20:50:14,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:14,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:14,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:14,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:14,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:14,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:14,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 563 transitions, 10051 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:14,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:14,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:14,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:16,282 INFO L124 PetriNetUnfolderBase]: 3701/5708 cut-off events. [2024-06-27 20:50:16,282 INFO L125 PetriNetUnfolderBase]: For 571976/571979 co-relation queries the response was YES. [2024-06-27 20:50:16,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60122 conditions, 5708 events. 3701/5708 cut-off events. For 571976/571979 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 32879 event pairs, 611 based on Foata normal form. 6/5707 useless extension candidates. Maximal degree in co-relation 59958. Up to 5302 conditions per place. [2024-06-27 20:50:16,370 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 521 selfloop transitions, 75 changer transitions 0/600 dead transitions. [2024-06-27 20:50:16,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 600 transitions, 11773 flow [2024-06-27 20:50:16,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:50:16,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:50:16,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 20:50:16,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:50:16,373 INFO L175 Difference]: Start difference. First operand has 368 places, 563 transitions, 10051 flow. Second operand 10 states and 175 transitions. [2024-06-27 20:50:16,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 600 transitions, 11773 flow [2024-06-27 20:50:18,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 600 transitions, 11541 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-06-27 20:50:18,339 INFO L231 Difference]: Finished difference. Result has 373 places, 570 transitions, 10220 flow [2024-06-27 20:50:18,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9829, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=10220, PETRI_PLACES=373, PETRI_TRANSITIONS=570} [2024-06-27 20:50:18,339 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 332 predicate places. [2024-06-27 20:50:18,340 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 570 transitions, 10220 flow [2024-06-27 20:50:18,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:18,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:18,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:18,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:50:18,340 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:18,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:18,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1081164893, now seen corresponding path program 13 times [2024-06-27 20:50:18,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:18,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890554341] [2024-06-27 20:50:18,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:18,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:19,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:19,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890554341] [2024-06-27 20:50:19,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890554341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:19,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:19,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:19,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482982852] [2024-06-27 20:50:19,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:19,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:19,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:19,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:19,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:19,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:19,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 570 transitions, 10220 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:19,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:19,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:19,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:21,159 INFO L124 PetriNetUnfolderBase]: 3695/5704 cut-off events. [2024-06-27 20:50:21,159 INFO L125 PetriNetUnfolderBase]: For 569414/569417 co-relation queries the response was YES. [2024-06-27 20:50:21,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59997 conditions, 5704 events. 3695/5704 cut-off events. For 569414/569417 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 32875 event pairs, 615 based on Foata normal form. 4/5701 useless extension candidates. Maximal degree in co-relation 59830. Up to 5384 conditions per place. [2024-06-27 20:50:21,254 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 534 selfloop transitions, 56 changer transitions 0/594 dead transitions. [2024-06-27 20:50:21,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 594 transitions, 11536 flow [2024-06-27 20:50:21,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:50:21,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:50:21,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 20:50:21,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 20:50:21,256 INFO L175 Difference]: Start difference. First operand has 373 places, 570 transitions, 10220 flow. Second operand 9 states and 152 transitions. [2024-06-27 20:50:21,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 594 transitions, 11536 flow [2024-06-27 20:50:23,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 594 transitions, 11275 flow, removed 72 selfloop flow, removed 6 redundant places. [2024-06-27 20:50:23,283 INFO L231 Difference]: Finished difference. Result has 376 places, 570 transitions, 10077 flow [2024-06-27 20:50:23,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9959, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10077, PETRI_PLACES=376, PETRI_TRANSITIONS=570} [2024-06-27 20:50:23,283 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 335 predicate places. [2024-06-27 20:50:23,284 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 570 transitions, 10077 flow [2024-06-27 20:50:23,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:23,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:23,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:23,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:50:23,284 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:23,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:23,285 INFO L85 PathProgramCache]: Analyzing trace with hash 371895968, now seen corresponding path program 9 times [2024-06-27 20:50:23,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:23,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375502720] [2024-06-27 20:50:23,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:23,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:24,172 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 20:50:24,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:24,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375502720] [2024-06-27 20:50:24,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375502720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:24,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:24,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394980623] [2024-06-27 20:50:24,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:24,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:24,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:24,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:24,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 570 transitions, 10077 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:24,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:24,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:24,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:25,768 INFO L124 PetriNetUnfolderBase]: 3683/5686 cut-off events. [2024-06-27 20:50:25,768 INFO L125 PetriNetUnfolderBase]: For 569606/569609 co-relation queries the response was YES. [2024-06-27 20:50:25,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59230 conditions, 5686 events. 3683/5686 cut-off events. For 569606/569609 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 32768 event pairs, 613 based on Foata normal form. 6/5685 useless extension candidates. Maximal degree in co-relation 59062. Up to 5360 conditions per place. [2024-06-27 20:50:25,861 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 533 selfloop transitions, 57 changer transitions 0/594 dead transitions. [2024-06-27 20:50:25,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 594 transitions, 11393 flow [2024-06-27 20:50:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:50:25,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:50:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 20:50:25,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:50:25,862 INFO L175 Difference]: Start difference. First operand has 376 places, 570 transitions, 10077 flow. Second operand 9 states and 153 transitions. [2024-06-27 20:50:25,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 594 transitions, 11393 flow [2024-06-27 20:50:27,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 594 transitions, 11203 flow, removed 41 selfloop flow, removed 7 redundant places. [2024-06-27 20:50:27,732 INFO L231 Difference]: Finished difference. Result has 378 places, 570 transitions, 10008 flow [2024-06-27 20:50:27,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9887, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10008, PETRI_PLACES=378, PETRI_TRANSITIONS=570} [2024-06-27 20:50:27,732 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 337 predicate places. [2024-06-27 20:50:27,733 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 570 transitions, 10008 flow [2024-06-27 20:50:27,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:27,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:27,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:27,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:50:27,733 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:27,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:27,733 INFO L85 PathProgramCache]: Analyzing trace with hash 371902912, now seen corresponding path program 5 times [2024-06-27 20:50:27,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:27,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12186732] [2024-06-27 20:50:27,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:27,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:27,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:28,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:28,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12186732] [2024-06-27 20:50:28,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12186732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:28,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:28,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:28,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559361996] [2024-06-27 20:50:28,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:28,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:28,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:28,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:28,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:28,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:28,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 570 transitions, 10008 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:28,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:28,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:28,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:30,322 INFO L124 PetriNetUnfolderBase]: 3727/5756 cut-off events. [2024-06-27 20:50:30,322 INFO L125 PetriNetUnfolderBase]: For 610320/610323 co-relation queries the response was YES. [2024-06-27 20:50:30,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60072 conditions, 5756 events. 3727/5756 cut-off events. For 610320/610323 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 33260 event pairs, 623 based on Foata normal form. 14/5763 useless extension candidates. Maximal degree in co-relation 59903. Up to 5408 conditions per place. [2024-06-27 20:50:30,405 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 544 selfloop transitions, 50 changer transitions 0/598 dead transitions. [2024-06-27 20:50:30,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 598 transitions, 11504 flow [2024-06-27 20:50:30,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:50:30,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:50:30,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 20:50:30,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:50:30,406 INFO L175 Difference]: Start difference. First operand has 378 places, 570 transitions, 10008 flow. Second operand 8 states and 140 transitions. [2024-06-27 20:50:30,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 598 transitions, 11504 flow [2024-06-27 20:50:32,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 598 transitions, 11361 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 20:50:32,267 INFO L231 Difference]: Finished difference. Result has 379 places, 571 transitions, 10008 flow [2024-06-27 20:50:32,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9865, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10008, PETRI_PLACES=379, PETRI_TRANSITIONS=571} [2024-06-27 20:50:32,267 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 338 predicate places. [2024-06-27 20:50:32,268 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 571 transitions, 10008 flow [2024-06-27 20:50:32,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:32,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:32,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:32,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:50:32,268 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:32,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:32,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1653729302, now seen corresponding path program 10 times [2024-06-27 20:50:32,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:32,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166929970] [2024-06-27 20:50:32,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:32,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:33,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:33,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166929970] [2024-06-27 20:50:33,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166929970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:33,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:33,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:33,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400264971] [2024-06-27 20:50:33,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:33,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:33,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:33,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 571 transitions, 10008 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:33,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:33,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:33,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:34,579 INFO L124 PetriNetUnfolderBase]: 3843/5916 cut-off events. [2024-06-27 20:50:34,579 INFO L125 PetriNetUnfolderBase]: For 650849/650852 co-relation queries the response was YES. [2024-06-27 20:50:34,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63557 conditions, 5916 events. 3843/5916 cut-off events. For 650849/650852 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 34224 event pairs, 620 based on Foata normal form. 6/5915 useless extension candidates. Maximal degree in co-relation 63387. Up to 5219 conditions per place. [2024-06-27 20:50:34,671 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 471 selfloop transitions, 138 changer transitions 0/613 dead transitions. [2024-06-27 20:50:34,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 613 transitions, 12500 flow [2024-06-27 20:50:34,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:50:34,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:50:34,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 161 transitions. [2024-06-27 20:50:34,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-27 20:50:34,672 INFO L175 Difference]: Start difference. First operand has 379 places, 571 transitions, 10008 flow. Second operand 9 states and 161 transitions. [2024-06-27 20:50:34,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 613 transitions, 12500 flow [2024-06-27 20:50:36,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 613 transitions, 12385 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-27 20:50:36,644 INFO L231 Difference]: Finished difference. Result has 383 places, 588 transitions, 10969 flow [2024-06-27 20:50:36,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=9893, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=10969, PETRI_PLACES=383, PETRI_TRANSITIONS=588} [2024-06-27 20:50:36,645 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 342 predicate places. [2024-06-27 20:50:36,645 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 588 transitions, 10969 flow [2024-06-27 20:50:36,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:36,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:36,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:36,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:50:36,646 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:36,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:36,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1653729085, now seen corresponding path program 14 times [2024-06-27 20:50:36,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:36,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551675819] [2024-06-27 20:50:36,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:36,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:37,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:37,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551675819] [2024-06-27 20:50:37,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551675819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:37,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:37,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:37,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779201435] [2024-06-27 20:50:37,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:37,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:37,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:37,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:37,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:37,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:37,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 588 transitions, 10969 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:37,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:37,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:37,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:39,473 INFO L124 PetriNetUnfolderBase]: 3869/5960 cut-off events. [2024-06-27 20:50:39,474 INFO L125 PetriNetUnfolderBase]: For 678171/678174 co-relation queries the response was YES. [2024-06-27 20:50:39,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65346 conditions, 5960 events. 3869/5960 cut-off events. For 678171/678174 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 34583 event pairs, 625 based on Foata normal form. 4/5957 useless extension candidates. Maximal degree in co-relation 65174. Up to 5383 conditions per place. [2024-06-27 20:50:39,567 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 488 selfloop transitions, 123 changer transitions 0/615 dead transitions. [2024-06-27 20:50:39,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 615 transitions, 12775 flow [2024-06-27 20:50:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:50:39,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:50:39,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 20:50:39,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305555555555556 [2024-06-27 20:50:39,569 INFO L175 Difference]: Start difference. First operand has 383 places, 588 transitions, 10969 flow. Second operand 9 states and 155 transitions. [2024-06-27 20:50:39,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 615 transitions, 12775 flow [2024-06-27 20:50:41,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 615 transitions, 12441 flow, removed 112 selfloop flow, removed 4 redundant places. [2024-06-27 20:50:41,660 INFO L231 Difference]: Finished difference. Result has 388 places, 594 transitions, 11169 flow [2024-06-27 20:50:41,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10635, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=588, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11169, PETRI_PLACES=388, PETRI_TRANSITIONS=594} [2024-06-27 20:50:41,660 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 347 predicate places. [2024-06-27 20:50:41,660 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 594 transitions, 11169 flow [2024-06-27 20:50:41,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:41,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:41,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:41,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:50:41,661 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:41,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:41,661 INFO L85 PathProgramCache]: Analyzing trace with hash -608053600, now seen corresponding path program 11 times [2024-06-27 20:50:41,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:41,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459949136] [2024-06-27 20:50:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:41,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:42,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:42,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459949136] [2024-06-27 20:50:42,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459949136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:42,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:42,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558178933] [2024-06-27 20:50:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:42,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:42,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:42,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:42,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:42,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 594 transitions, 11169 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:42,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:42,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:42,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:44,163 INFO L124 PetriNetUnfolderBase]: 3857/5942 cut-off events. [2024-06-27 20:50:44,163 INFO L125 PetriNetUnfolderBase]: For 678660/678663 co-relation queries the response was YES. [2024-06-27 20:50:44,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64971 conditions, 5942 events. 3857/5942 cut-off events. For 678660/678663 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 34476 event pairs, 605 based on Foata normal form. 6/5941 useless extension candidates. Maximal degree in co-relation 64797. Up to 5247 conditions per place. [2024-06-27 20:50:44,258 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 471 selfloop transitions, 143 changer transitions 0/618 dead transitions. [2024-06-27 20:50:44,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 618 transitions, 12925 flow [2024-06-27 20:50:44,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:50:44,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:50:44,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 20:50:44,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 20:50:44,259 INFO L175 Difference]: Start difference. First operand has 388 places, 594 transitions, 11169 flow. Second operand 9 states and 160 transitions. [2024-06-27 20:50:44,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 618 transitions, 12925 flow [2024-06-27 20:50:46,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 618 transitions, 12573 flow, removed 119 selfloop flow, removed 5 redundant places. [2024-06-27 20:50:46,570 INFO L231 Difference]: Finished difference. Result has 392 places, 594 transitions, 11111 flow [2024-06-27 20:50:46,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10817, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11111, PETRI_PLACES=392, PETRI_TRANSITIONS=594} [2024-06-27 20:50:46,570 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 351 predicate places. [2024-06-27 20:50:46,571 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 594 transitions, 11111 flow [2024-06-27 20:50:46,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:46,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:46,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:46,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:50:46,571 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:46,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:46,572 INFO L85 PathProgramCache]: Analyzing trace with hash -68774179, now seen corresponding path program 15 times [2024-06-27 20:50:46,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:46,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586545308] [2024-06-27 20:50:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:46,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:47,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:47,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586545308] [2024-06-27 20:50:47,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586545308] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:47,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:47,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:50:47,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393564549] [2024-06-27 20:50:47,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:47,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:50:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:50:47,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:50:47,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:47,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 594 transitions, 11111 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:47,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:47,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:47,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:49,152 INFO L124 PetriNetUnfolderBase]: 3851/5936 cut-off events. [2024-06-27 20:50:49,153 INFO L125 PetriNetUnfolderBase]: For 669753/669756 co-relation queries the response was YES. [2024-06-27 20:50:49,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64932 conditions, 5936 events. 3851/5936 cut-off events. For 669753/669756 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 34454 event pairs, 610 based on Foata normal form. 4/5933 useless extension candidates. Maximal degree in co-relation 64756. Up to 5482 conditions per place. [2024-06-27 20:50:49,248 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 516 selfloop transitions, 98 changer transitions 0/618 dead transitions. [2024-06-27 20:50:49,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 618 transitions, 12568 flow [2024-06-27 20:50:49,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:50:49,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:50:49,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 20:50:49,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 20:50:49,250 INFO L175 Difference]: Start difference. First operand has 392 places, 594 transitions, 11111 flow. Second operand 9 states and 152 transitions. [2024-06-27 20:50:49,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 618 transitions, 12568 flow [2024-06-27 20:50:51,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 618 transitions, 12244 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-27 20:50:51,258 INFO L231 Difference]: Finished difference. Result has 395 places, 599 transitions, 11111 flow [2024-06-27 20:50:51,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10794, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11111, PETRI_PLACES=395, PETRI_TRANSITIONS=599} [2024-06-27 20:50:51,259 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 354 predicate places. [2024-06-27 20:50:51,259 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 599 transitions, 11111 flow [2024-06-27 20:50:51,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:51,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:51,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:50:51,259 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:51,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -615671974, now seen corresponding path program 2 times [2024-06-27 20:50:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:51,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313432840] [2024-06-27 20:50:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:51,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:51,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:52,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:52,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313432840] [2024-06-27 20:50:52,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313432840] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:52,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:52,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:50:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839139717] [2024-06-27 20:50:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:50:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:52,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:50:52,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:50:52,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:52,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 599 transitions, 11111 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:52,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:52,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:52,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:53,970 INFO L124 PetriNetUnfolderBase]: 3848/5936 cut-off events. [2024-06-27 20:50:53,970 INFO L125 PetriNetUnfolderBase]: For 668862/668865 co-relation queries the response was YES. [2024-06-27 20:50:54,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64619 conditions, 5936 events. 3848/5936 cut-off events. For 668862/668865 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 34493 event pairs, 625 based on Foata normal form. 3/5932 useless extension candidates. Maximal degree in co-relation 64441. Up to 5470 conditions per place. [2024-06-27 20:50:54,057 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 512 selfloop transitions, 101 changer transitions 0/617 dead transitions. [2024-06-27 20:50:54,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 617 transitions, 12457 flow [2024-06-27 20:50:54,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:50:54,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:50:54,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 20:50:54,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:50:54,058 INFO L175 Difference]: Start difference. First operand has 395 places, 599 transitions, 11111 flow. Second operand 8 states and 140 transitions. [2024-06-27 20:50:54,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 617 transitions, 12457 flow [2024-06-27 20:50:56,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 617 transitions, 12167 flow, removed 51 selfloop flow, removed 6 redundant places. [2024-06-27 20:50:56,270 INFO L231 Difference]: Finished difference. Result has 397 places, 599 transitions, 11036 flow [2024-06-27 20:50:56,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10821, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11036, PETRI_PLACES=397, PETRI_TRANSITIONS=599} [2024-06-27 20:50:56,270 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 356 predicate places. [2024-06-27 20:50:56,270 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 599 transitions, 11036 flow [2024-06-27 20:50:56,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:56,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:50:56,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:50:56,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:50:56,271 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:50:56,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:50:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1494954164, now seen corresponding path program 6 times [2024-06-27 20:50:56,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:50:56,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450881653] [2024-06-27 20:50:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:50:56,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:50:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:50:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:50:57,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:50:57,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450881653] [2024-06-27 20:50:57,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450881653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:50:57,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:50:57,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:50:57,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560780379] [2024-06-27 20:50:57,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:50:57,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:50:57,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:50:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:50:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:50:57,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:50:57,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 599 transitions, 11036 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:50:57,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:50:57,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:50:57,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:50:58,798 INFO L124 PetriNetUnfolderBase]: 3984/6144 cut-off events. [2024-06-27 20:50:58,799 INFO L125 PetriNetUnfolderBase]: For 766788/766791 co-relation queries the response was YES. [2024-06-27 20:50:58,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68188 conditions, 6144 events. 3984/6144 cut-off events. For 766788/766791 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 35892 event pairs, 648 based on Foata normal form. 10/6147 useless extension candidates. Maximal degree in co-relation 68009. Up to 5464 conditions per place. [2024-06-27 20:50:58,899 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 528 selfloop transitions, 97 changer transitions 0/629 dead transitions. [2024-06-27 20:50:58,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 629 transitions, 12932 flow [2024-06-27 20:50:58,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:50:58,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:50:58,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 20:50:58,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 20:50:58,900 INFO L175 Difference]: Start difference. First operand has 397 places, 599 transitions, 11036 flow. Second operand 8 states and 144 transitions. [2024-06-27 20:50:58,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 629 transitions, 12932 flow [2024-06-27 20:51:01,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 629 transitions, 12685 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 20:51:01,223 INFO L231 Difference]: Finished difference. Result has 399 places, 602 transitions, 11106 flow [2024-06-27 20:51:01,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10791, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=503, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11106, PETRI_PLACES=399, PETRI_TRANSITIONS=602} [2024-06-27 20:51:01,223 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 358 predicate places. [2024-06-27 20:51:01,223 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 602 transitions, 11106 flow [2024-06-27 20:51:01,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:01,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:01,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:01,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:51:01,224 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:01,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:01,224 INFO L85 PathProgramCache]: Analyzing trace with hash 614423960, now seen corresponding path program 12 times [2024-06-27 20:51:01,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:01,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564662050] [2024-06-27 20:51:01,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:01,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:02,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:02,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564662050] [2024-06-27 20:51:02,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564662050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:02,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:02,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:02,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261085309] [2024-06-27 20:51:02,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:02,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:02,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:02,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:02,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:02,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:02,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 602 transitions, 11106 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:02,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:02,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:02,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:03,853 INFO L124 PetriNetUnfolderBase]: 3992/6162 cut-off events. [2024-06-27 20:51:03,853 INFO L125 PetriNetUnfolderBase]: For 755119/755122 co-relation queries the response was YES. [2024-06-27 20:51:03,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68212 conditions, 6162 events. 3992/6162 cut-off events. For 755119/755122 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 36085 event pairs, 657 based on Foata normal form. 10/6165 useless extension candidates. Maximal degree in co-relation 68031. Up to 5658 conditions per place. [2024-06-27 20:51:03,955 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 515 selfloop transitions, 108 changer transitions 0/627 dead transitions. [2024-06-27 20:51:03,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 627 transitions, 12650 flow [2024-06-27 20:51:03,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:51:03,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:51:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 20:51:03,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 20:51:03,957 INFO L175 Difference]: Start difference. First operand has 399 places, 602 transitions, 11106 flow. Second operand 9 states and 156 transitions. [2024-06-27 20:51:03,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 627 transitions, 12650 flow [2024-06-27 20:51:06,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 627 transitions, 12514 flow, removed 12 selfloop flow, removed 4 redundant places. [2024-06-27 20:51:06,054 INFO L231 Difference]: Finished difference. Result has 404 places, 606 transitions, 11344 flow [2024-06-27 20:51:06,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10970, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11344, PETRI_PLACES=404, PETRI_TRANSITIONS=606} [2024-06-27 20:51:06,054 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 363 predicate places. [2024-06-27 20:51:06,054 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 606 transitions, 11344 flow [2024-06-27 20:51:06,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:06,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:06,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:06,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:51:06,055 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:06,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -615672377, now seen corresponding path program 16 times [2024-06-27 20:51:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:06,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850105118] [2024-06-27 20:51:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:06,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:07,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:07,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850105118] [2024-06-27 20:51:07,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850105118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:07,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:07,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:07,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876316674] [2024-06-27 20:51:07,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:07,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:07,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:07,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:07,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:07,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:07,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 606 transitions, 11344 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:07,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:07,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:07,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:08,929 INFO L124 PetriNetUnfolderBase]: 3986/6152 cut-off events. [2024-06-27 20:51:08,929 INFO L125 PetriNetUnfolderBase]: For 734170/734173 co-relation queries the response was YES. [2024-06-27 20:51:09,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68215 conditions, 6152 events. 3986/6152 cut-off events. For 734170/734173 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 36025 event pairs, 665 based on Foata normal form. 4/6149 useless extension candidates. Maximal degree in co-relation 68032. Up to 5674 conditions per place. [2024-06-27 20:51:09,035 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 518 selfloop transitions, 104 changer transitions 0/626 dead transitions. [2024-06-27 20:51:09,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 626 transitions, 12726 flow [2024-06-27 20:51:09,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:51:09,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:51:09,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 20:51:09,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 20:51:09,036 INFO L175 Difference]: Start difference. First operand has 404 places, 606 transitions, 11344 flow. Second operand 9 states and 154 transitions. [2024-06-27 20:51:09,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 626 transitions, 12726 flow [2024-06-27 20:51:11,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 626 transitions, 12360 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-06-27 20:51:11,505 INFO L231 Difference]: Finished difference. Result has 406 places, 606 transitions, 11193 flow [2024-06-27 20:51:11,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10978, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11193, PETRI_PLACES=406, PETRI_TRANSITIONS=606} [2024-06-27 20:51:11,506 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 365 predicate places. [2024-06-27 20:51:11,506 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 606 transitions, 11193 flow [2024-06-27 20:51:11,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:11,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:11,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:11,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:51:11,506 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:11,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:11,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1480669364, now seen corresponding path program 7 times [2024-06-27 20:51:11,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:11,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104509501] [2024-06-27 20:51:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:11,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:12,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104509501] [2024-06-27 20:51:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104509501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:12,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:12,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762084769] [2024-06-27 20:51:12,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:12,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:12,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:12,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:12,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:12,483 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:12,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 606 transitions, 11193 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:12,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:12,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:12,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:14,130 INFO L124 PetriNetUnfolderBase]: 3963/6121 cut-off events. [2024-06-27 20:51:14,130 INFO L125 PetriNetUnfolderBase]: For 734043/734043 co-relation queries the response was YES. [2024-06-27 20:51:14,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66470 conditions, 6121 events. 3963/6121 cut-off events. For 734043/734043 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 35899 event pairs, 643 based on Foata normal form. 12/6125 useless extension candidates. Maximal degree in co-relation 66286. Up to 5552 conditions per place. [2024-06-27 20:51:14,231 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 523 selfloop transitions, 108 changer transitions 0/635 dead transitions. [2024-06-27 20:51:14,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 635 transitions, 12801 flow [2024-06-27 20:51:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:51:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:51:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 20:51:14,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.446875 [2024-06-27 20:51:14,232 INFO L175 Difference]: Start difference. First operand has 406 places, 606 transitions, 11193 flow. Second operand 8 states and 143 transitions. [2024-06-27 20:51:14,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 635 transitions, 12801 flow [2024-06-27 20:51:16,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 635 transitions, 12470 flow, removed 64 selfloop flow, removed 7 redundant places. [2024-06-27 20:51:16,690 INFO L231 Difference]: Finished difference. Result has 409 places, 612 transitions, 11253 flow [2024-06-27 20:51:16,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10862, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11253, PETRI_PLACES=409, PETRI_TRANSITIONS=612} [2024-06-27 20:51:16,690 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 368 predicate places. [2024-06-27 20:51:16,690 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 612 transitions, 11253 flow [2024-06-27 20:51:16,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:16,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:16,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:16,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:51:16,691 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:16,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1181972438, now seen corresponding path program 3 times [2024-06-27 20:51:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:16,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411851023] [2024-06-27 20:51:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:16,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:17,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:17,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411851023] [2024-06-27 20:51:17,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411851023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:17,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:17,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:17,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272437821] [2024-06-27 20:51:17,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:17,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:17,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:17,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:17,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:17,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:17,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 612 transitions, 11253 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:17,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:17,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:17,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:19,414 INFO L124 PetriNetUnfolderBase]: 3954/6107 cut-off events. [2024-06-27 20:51:19,414 INFO L125 PetriNetUnfolderBase]: For 696771/696771 co-relation queries the response was YES. [2024-06-27 20:51:19,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66485 conditions, 6107 events. 3954/6107 cut-off events. For 696771/696771 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 35751 event pairs, 646 based on Foata normal form. 3/6102 useless extension candidates. Maximal degree in co-relation 66298. Up to 5753 conditions per place. [2024-06-27 20:51:19,515 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 562 selfloop transitions, 61 changer transitions 0/627 dead transitions. [2024-06-27 20:51:19,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 627 transitions, 12613 flow [2024-06-27 20:51:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:51:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:51:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 20:51:19,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 20:51:19,516 INFO L175 Difference]: Start difference. First operand has 409 places, 612 transitions, 11253 flow. Second operand 8 states and 135 transitions. [2024-06-27 20:51:19,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 627 transitions, 12613 flow [2024-06-27 20:51:22,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 627 transitions, 12414 flow, removed 39 selfloop flow, removed 4 redundant places. [2024-06-27 20:51:22,335 INFO L231 Difference]: Finished difference. Result has 413 places, 612 transitions, 11186 flow [2024-06-27 20:51:22,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11054, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11186, PETRI_PLACES=413, PETRI_TRANSITIONS=612} [2024-06-27 20:51:22,335 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 372 predicate places. [2024-06-27 20:51:22,335 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 612 transitions, 11186 flow [2024-06-27 20:51:22,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:22,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:22,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:22,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:51:22,336 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:22,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:22,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1108830656, now seen corresponding path program 8 times [2024-06-27 20:51:22,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:22,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869298836] [2024-06-27 20:51:22,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:22,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:23,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:23,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869298836] [2024-06-27 20:51:23,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869298836] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:23,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:23,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520159417] [2024-06-27 20:51:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:23,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:23,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:23,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 612 transitions, 11186 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:23,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:23,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:23,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:25,287 INFO L124 PetriNetUnfolderBase]: 3998/6175 cut-off events. [2024-06-27 20:51:25,287 INFO L125 PetriNetUnfolderBase]: For 751004/751004 co-relation queries the response was YES. [2024-06-27 20:51:25,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67219 conditions, 6175 events. 3998/6175 cut-off events. For 751004/751004 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 36263 event pairs, 672 based on Foata normal form. 12/6179 useless extension candidates. Maximal degree in co-relation 67030. Up to 5785 conditions per place. [2024-06-27 20:51:25,380 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 573 selfloop transitions, 56 changer transitions 0/633 dead transitions. [2024-06-27 20:51:25,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 633 transitions, 12758 flow [2024-06-27 20:51:25,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:51:25,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:51:25,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 20:51:25,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-27 20:51:25,381 INFO L175 Difference]: Start difference. First operand has 413 places, 612 transitions, 11186 flow. Second operand 8 states and 137 transitions. [2024-06-27 20:51:25,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 633 transitions, 12758 flow [2024-06-27 20:51:28,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 633 transitions, 12546 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 20:51:28,337 INFO L231 Difference]: Finished difference. Result has 414 places, 613 transitions, 11133 flow [2024-06-27 20:51:28,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10974, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11133, PETRI_PLACES=414, PETRI_TRANSITIONS=613} [2024-06-27 20:51:28,337 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 373 predicate places. [2024-06-27 20:51:28,337 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 613 transitions, 11133 flow [2024-06-27 20:51:28,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:28,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:28,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:28,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:51:28,338 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:28,338 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:28,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1116442272, now seen corresponding path program 13 times [2024-06-27 20:51:28,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:28,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715342540] [2024-06-27 20:51:28,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:28,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:29,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:29,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715342540] [2024-06-27 20:51:29,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715342540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:29,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:29,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681425734] [2024-06-27 20:51:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:29,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:29,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:29,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:29,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 613 transitions, 11133 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:29,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:29,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:29,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:30,977 INFO L124 PetriNetUnfolderBase]: 4032/6224 cut-off events. [2024-06-27 20:51:30,977 INFO L125 PetriNetUnfolderBase]: For 728197/728197 co-relation queries the response was YES. [2024-06-27 20:51:31,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68275 conditions, 6224 events. 4032/6224 cut-off events. For 728197/728197 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 36535 event pairs, 669 based on Foata normal form. 2/6218 useless extension candidates. Maximal degree in co-relation 68086. Up to 5710 conditions per place. [2024-06-27 20:51:31,080 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 543 selfloop transitions, 94 changer transitions 0/641 dead transitions. [2024-06-27 20:51:31,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 641 transitions, 13319 flow [2024-06-27 20:51:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:51:31,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:51:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 20:51:31,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:51:31,081 INFO L175 Difference]: Start difference. First operand has 414 places, 613 transitions, 11133 flow. Second operand 9 states and 153 transitions. [2024-06-27 20:51:31,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 641 transitions, 13319 flow [2024-06-27 20:51:33,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 641 transitions, 13154 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 20:51:33,861 INFO L231 Difference]: Finished difference. Result has 419 places, 623 transitions, 11648 flow [2024-06-27 20:51:33,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=10980, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11648, PETRI_PLACES=419, PETRI_TRANSITIONS=623} [2024-06-27 20:51:33,861 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 378 predicate places. [2024-06-27 20:51:33,861 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 623 transitions, 11648 flow [2024-06-27 20:51:33,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:33,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:33,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:33,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:51:33,862 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:33,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:33,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1108823712, now seen corresponding path program 14 times [2024-06-27 20:51:33,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:33,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567516873] [2024-06-27 20:51:33,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:33,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:34,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:34,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:34,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567516873] [2024-06-27 20:51:34,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567516873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:34,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:34,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:34,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965306807] [2024-06-27 20:51:34,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:34,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:34,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:34,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:34,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:34,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:34,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 623 transitions, 11648 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:34,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:34,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:34,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:36,455 INFO L124 PetriNetUnfolderBase]: 4072/6282 cut-off events. [2024-06-27 20:51:36,455 INFO L125 PetriNetUnfolderBase]: For 768409/768412 co-relation queries the response was YES. [2024-06-27 20:51:36,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69496 conditions, 6282 events. 4072/6282 cut-off events. For 768409/768412 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 36863 event pairs, 681 based on Foata normal form. 10/6285 useless extension candidates. Maximal degree in co-relation 69304. Up to 5938 conditions per place. [2024-06-27 20:51:36,564 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 585 selfloop transitions, 59 changer transitions 0/648 dead transitions. [2024-06-27 20:51:36,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 648 transitions, 13426 flow [2024-06-27 20:51:36,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:51:36,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:51:36,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 20:51:36,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41388888888888886 [2024-06-27 20:51:36,565 INFO L175 Difference]: Start difference. First operand has 419 places, 623 transitions, 11648 flow. Second operand 9 states and 149 transitions. [2024-06-27 20:51:36,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 648 transitions, 13426 flow [2024-06-27 20:51:39,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 648 transitions, 13099 flow, removed 131 selfloop flow, removed 4 redundant places. [2024-06-27 20:51:39,652 INFO L231 Difference]: Finished difference. Result has 424 places, 630 transitions, 11801 flow [2024-06-27 20:51:39,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11367, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11801, PETRI_PLACES=424, PETRI_TRANSITIONS=630} [2024-06-27 20:51:39,653 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 383 predicate places. [2024-06-27 20:51:39,653 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 630 transitions, 11801 flow [2024-06-27 20:51:39,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:39,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:39,653 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:39,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:51:39,653 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:39,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:39,654 INFO L85 PathProgramCache]: Analyzing trace with hash 584096797, now seen corresponding path program 17 times [2024-06-27 20:51:39,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:39,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3960429] [2024-06-27 20:51:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:39,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:40,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:40,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3960429] [2024-06-27 20:51:40,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3960429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:40,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:40,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:40,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812210244] [2024-06-27 20:51:40,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:40,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:40,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:40,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:40,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:40,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:40,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 630 transitions, 11801 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:40,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:40,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:40,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:42,614 INFO L124 PetriNetUnfolderBase]: 4082/6302 cut-off events. [2024-06-27 20:51:42,615 INFO L125 PetriNetUnfolderBase]: For 758830/758833 co-relation queries the response was YES. [2024-06-27 20:51:42,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70049 conditions, 6302 events. 4082/6302 cut-off events. For 758830/758833 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 37094 event pairs, 669 based on Foata normal form. 4/6299 useless extension candidates. Maximal degree in co-relation 69855. Up to 5976 conditions per place. [2024-06-27 20:51:42,724 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 591 selfloop transitions, 55 changer transitions 0/650 dead transitions. [2024-06-27 20:51:42,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 650 transitions, 13365 flow [2024-06-27 20:51:42,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:51:42,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:51:42,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 20:51:42,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083333333333333 [2024-06-27 20:51:42,726 INFO L175 Difference]: Start difference. First operand has 424 places, 630 transitions, 11801 flow. Second operand 9 states and 147 transitions. [2024-06-27 20:51:42,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 650 transitions, 13365 flow [2024-06-27 20:51:45,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 650 transitions, 13038 flow, removed 109 selfloop flow, removed 7 redundant places. [2024-06-27 20:51:45,696 INFO L231 Difference]: Finished difference. Result has 426 places, 633 transitions, 11735 flow [2024-06-27 20:51:45,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11474, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11735, PETRI_PLACES=426, PETRI_TRANSITIONS=633} [2024-06-27 20:51:45,696 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 385 predicate places. [2024-06-27 20:51:45,696 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 633 transitions, 11735 flow [2024-06-27 20:51:45,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:45,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:45,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:45,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:51:45,697 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:45,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:45,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1123115456, now seen corresponding path program 9 times [2024-06-27 20:51:45,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:45,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978027985] [2024-06-27 20:51:45,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:45,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:45,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:46,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:46,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978027985] [2024-06-27 20:51:46,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978027985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:46,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:46,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:51:46,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138302147] [2024-06-27 20:51:46,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:51:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:46,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:51:46,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:51:46,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:46,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 633 transitions, 11735 flow. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:46,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:46,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:46,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:48,331 INFO L124 PetriNetUnfolderBase]: 4218/6508 cut-off events. [2024-06-27 20:51:48,331 INFO L125 PetriNetUnfolderBase]: For 858746/858749 co-relation queries the response was YES. [2024-06-27 20:51:48,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73507 conditions, 6508 events. 4218/6508 cut-off events. For 858746/858749 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 38493 event pairs, 697 based on Foata normal form. 10/6511 useless extension candidates. Maximal degree in co-relation 73312. Up to 5978 conditions per place. [2024-06-27 20:51:48,447 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 605 selfloop transitions, 50 changer transitions 0/659 dead transitions. [2024-06-27 20:51:48,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 659 transitions, 13701 flow [2024-06-27 20:51:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:51:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:51:48,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 20:51:48,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-27 20:51:48,449 INFO L175 Difference]: Start difference. First operand has 426 places, 633 transitions, 11735 flow. Second operand 8 states and 137 transitions. [2024-06-27 20:51:48,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 659 transitions, 13701 flow [2024-06-27 20:51:51,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 659 transitions, 13470 flow, removed 63 selfloop flow, removed 7 redundant places. [2024-06-27 20:51:51,136 INFO L231 Difference]: Finished difference. Result has 428 places, 636 transitions, 11734 flow [2024-06-27 20:51:51,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11504, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=11734, PETRI_PLACES=428, PETRI_TRANSITIONS=636} [2024-06-27 20:51:51,136 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 387 predicate places. [2024-06-27 20:51:51,136 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 636 transitions, 11734 flow [2024-06-27 20:51:51,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:51,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:51,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:51,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:51:51,137 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:51,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:51,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1116175362, now seen corresponding path program 15 times [2024-06-27 20:51:51,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:51,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933843197] [2024-06-27 20:51:51,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:51,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:51:51,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:51,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933843197] [2024-06-27 20:51:51,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933843197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:51,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:51,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:51,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374316130] [2024-06-27 20:51:51,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:51,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:51,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:51,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:52,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:52,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 636 transitions, 11734 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:52,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:52,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:52,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:53,921 INFO L124 PetriNetUnfolderBase]: 4228/6530 cut-off events. [2024-06-27 20:51:53,921 INFO L125 PetriNetUnfolderBase]: For 849192/849192 co-relation queries the response was YES. [2024-06-27 20:51:54,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73891 conditions, 6530 events. 4228/6530 cut-off events. For 849192/849192 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 38767 event pairs, 702 based on Foata normal form. 2/6524 useless extension candidates. Maximal degree in co-relation 73694. Up to 5990 conditions per place. [2024-06-27 20:51:54,038 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 558 selfloop transitions, 94 changer transitions 0/656 dead transitions. [2024-06-27 20:51:54,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 656 transitions, 13453 flow [2024-06-27 20:51:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:51:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:51:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 20:51:54,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 20:51:54,039 INFO L175 Difference]: Start difference. First operand has 428 places, 636 transitions, 11734 flow. Second operand 9 states and 152 transitions. [2024-06-27 20:51:54,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 656 transitions, 13453 flow [2024-06-27 20:51:57,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 656 transitions, 13354 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-06-27 20:51:57,132 INFO L231 Difference]: Finished difference. Result has 432 places, 639 transitions, 11930 flow [2024-06-27 20:51:57,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11635, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11930, PETRI_PLACES=432, PETRI_TRANSITIONS=639} [2024-06-27 20:51:57,132 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 391 predicate places. [2024-06-27 20:51:57,132 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 639 transitions, 11930 flow [2024-06-27 20:51:57,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:57,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:51:57,133 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:51:57,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:51:57,133 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:51:57,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:51:57,133 INFO L85 PathProgramCache]: Analyzing trace with hash 764082624, now seen corresponding path program 10 times [2024-06-27 20:51:57,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:51:57,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476852077] [2024-06-27 20:51:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:51:57,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:51:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:51:57,866 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 20:51:57,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:51:57,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476852077] [2024-06-27 20:51:57,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476852077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:51:57,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:51:57,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:51:57,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191384076] [2024-06-27 20:51:57,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:51:57,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:51:57,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:51:57,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:51:57,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:51:57,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:51:57,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 639 transitions, 11930 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:51:57,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:51:57,949 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:51:57,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:51:59,900 INFO L124 PetriNetUnfolderBase]: 4284/6610 cut-off events. [2024-06-27 20:51:59,900 INFO L125 PetriNetUnfolderBase]: For 894975/894975 co-relation queries the response was YES. [2024-06-27 20:51:59,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75086 conditions, 6610 events. 4284/6610 cut-off events. For 894975/894975 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 39255 event pairs, 668 based on Foata normal form. 8/6610 useless extension candidates. Maximal degree in co-relation 74887. Up to 6183 conditions per place. [2024-06-27 20:52:00,013 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 620 selfloop transitions, 41 changer transitions 0/665 dead transitions. [2024-06-27 20:52:00,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 665 transitions, 13734 flow [2024-06-27 20:52:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:52:00,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:52:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 20:52:00,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:52:00,014 INFO L175 Difference]: Start difference. First operand has 432 places, 639 transitions, 11930 flow. Second operand 8 states and 136 transitions. [2024-06-27 20:52:00,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 665 transitions, 13734 flow [2024-06-27 20:52:03,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 665 transitions, 13526 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 20:52:03,543 INFO L231 Difference]: Finished difference. Result has 436 places, 645 transitions, 12016 flow [2024-06-27 20:52:03,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11722, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=599, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12016, PETRI_PLACES=436, PETRI_TRANSITIONS=645} [2024-06-27 20:52:03,543 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 395 predicate places. [2024-06-27 20:52:03,543 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 645 transitions, 12016 flow [2024-06-27 20:52:03,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:03,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:03,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:03,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:52:03,544 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:03,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:03,544 INFO L85 PathProgramCache]: Analyzing trace with hash 769796544, now seen corresponding path program 11 times [2024-06-27 20:52:03,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:03,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279614621] [2024-06-27 20:52:03,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:03,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:52:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:52:04,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:52:04,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279614621] [2024-06-27 20:52:04,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279614621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:52:04,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:52:04,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:52:04,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861421377] [2024-06-27 20:52:04,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:52:04,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:52:04,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:52:04,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:52:04,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:52:04,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:52:04,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 645 transitions, 12016 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:04,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:52:04,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:52:04,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:52:06,569 INFO L124 PetriNetUnfolderBase]: 4384/6766 cut-off events. [2024-06-27 20:52:06,569 INFO L125 PetriNetUnfolderBase]: For 986679/986679 co-relation queries the response was YES. [2024-06-27 20:52:06,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79127 conditions, 6766 events. 4384/6766 cut-off events. For 986679/986679 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 40356 event pairs, 673 based on Foata normal form. 8/6766 useless extension candidates. Maximal degree in co-relation 78925. Up to 6131 conditions per place. [2024-06-27 20:52:06,683 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 624 selfloop transitions, 45 changer transitions 0/673 dead transitions. [2024-06-27 20:52:06,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 673 transitions, 14146 flow [2024-06-27 20:52:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:52:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:52:06,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 20:52:06,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2024-06-27 20:52:06,684 INFO L175 Difference]: Start difference. First operand has 436 places, 645 transitions, 12016 flow. Second operand 8 states and 142 transitions. [2024-06-27 20:52:06,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 673 transitions, 14146 flow [2024-06-27 20:52:10,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 673 transitions, 13964 flow, removed 60 selfloop flow, removed 4 redundant places. [2024-06-27 20:52:10,424 INFO L231 Difference]: Finished difference. Result has 440 places, 647 transitions, 12022 flow [2024-06-27 20:52:10,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11834, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12022, PETRI_PLACES=440, PETRI_TRANSITIONS=647} [2024-06-27 20:52:10,425 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 399 predicate places. [2024-06-27 20:52:10,425 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 647 transitions, 12022 flow [2024-06-27 20:52:10,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:10,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:10,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:10,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:52:10,425 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:10,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:10,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1116175145, now seen corresponding path program 18 times [2024-06-27 20:52:10,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:10,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268591584] [2024-06-27 20:52:10,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:10,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:52:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:52:11,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:52:11,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268591584] [2024-06-27 20:52:11,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268591584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:52:11,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:52:11,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:52:11,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832077336] [2024-06-27 20:52:11,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:52:11,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:52:11,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:52:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:52:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:52:11,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:52:11,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 647 transitions, 12022 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:11,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:52:11,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:52:11,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:52:13,542 INFO L124 PetriNetUnfolderBase]: 4394/6804 cut-off events. [2024-06-27 20:52:13,542 INFO L125 PetriNetUnfolderBase]: For 972562/972565 co-relation queries the response was YES. [2024-06-27 20:52:13,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79310 conditions, 6804 events. 4394/6804 cut-off events. For 972562/972565 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 40897 event pairs, 761 based on Foata normal form. 4/6801 useless extension candidates. Maximal degree in co-relation 79107. Up to 6369 conditions per place. [2024-06-27 20:52:13,660 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 591 selfloop transitions, 72 changer transitions 0/667 dead transitions. [2024-06-27 20:52:13,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 667 transitions, 13820 flow [2024-06-27 20:52:13,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:52:13,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:52:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 20:52:13,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 20:52:13,661 INFO L175 Difference]: Start difference. First operand has 440 places, 647 transitions, 12022 flow. Second operand 9 states and 148 transitions. [2024-06-27 20:52:13,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 667 transitions, 13820 flow [2024-06-27 20:52:17,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 667 transitions, 13732 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-27 20:52:17,497 INFO L231 Difference]: Finished difference. Result has 445 places, 650 transitions, 12228 flow [2024-06-27 20:52:17,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11934, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=578, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12228, PETRI_PLACES=445, PETRI_TRANSITIONS=650} [2024-06-27 20:52:17,498 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 404 predicate places. [2024-06-27 20:52:17,498 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 650 transitions, 12228 flow [2024-06-27 20:52:17,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:17,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:17,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:17,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:52:17,498 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:17,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash 484458346, now seen corresponding path program 4 times [2024-06-27 20:52:17,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:17,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431475686] [2024-06-27 20:52:17,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:17,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:52:18,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:52:18,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:52:18,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431475686] [2024-06-27 20:52:18,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431475686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:52:18,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:52:18,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:52:18,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250776548] [2024-06-27 20:52:18,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:52:18,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:52:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:52:18,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:52:18,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:52:18,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:52:18,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 650 transitions, 12228 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:18,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:52:18,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:52:18,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:52:20,464 INFO L124 PetriNetUnfolderBase]: 4422/6829 cut-off events. [2024-06-27 20:52:20,464 INFO L125 PetriNetUnfolderBase]: For 988480/988483 co-relation queries the response was YES. [2024-06-27 20:52:20,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80008 conditions, 6829 events. 4422/6829 cut-off events. For 988480/988483 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 40923 event pairs, 745 based on Foata normal form. 3/6825 useless extension candidates. Maximal degree in co-relation 79803. Up to 6385 conditions per place. [2024-06-27 20:52:20,578 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 591 selfloop transitions, 92 changer transitions 0/687 dead transitions. [2024-06-27 20:52:20,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 687 transitions, 14540 flow [2024-06-27 20:52:20,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:52:20,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:52:20,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 20:52:20,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 20:52:20,579 INFO L175 Difference]: Start difference. First operand has 445 places, 650 transitions, 12228 flow. Second operand 8 states and 135 transitions. [2024-06-27 20:52:20,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 687 transitions, 14540 flow [2024-06-27 20:52:24,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 687 transitions, 14013 flow, removed 81 selfloop flow, removed 9 redundant places. [2024-06-27 20:52:24,075 INFO L231 Difference]: Finished difference. Result has 447 places, 672 transitions, 12666 flow [2024-06-27 20:52:24,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=11701, PETRI_DIFFERENCE_MINUEND_PLACES=436, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12666, PETRI_PLACES=447, PETRI_TRANSITIONS=672} [2024-06-27 20:52:24,075 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 406 predicate places. [2024-06-27 20:52:24,075 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 672 transitions, 12666 flow [2024-06-27 20:52:24,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:24,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:24,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:24,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:52:24,076 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:24,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:24,076 INFO L85 PathProgramCache]: Analyzing trace with hash 307386594, now seen corresponding path program 12 times [2024-06-27 20:52:24,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:24,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128569130] [2024-06-27 20:52:24,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:24,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:24,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:52:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:52:24,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:52:24,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128569130] [2024-06-27 20:52:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128569130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:52:24,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:52:24,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:52:24,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353053113] [2024-06-27 20:52:24,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:52:24,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:52:24,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:52:24,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:52:24,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:52:25,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:52:25,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 672 transitions, 12666 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:25,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:52:25,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:52:25,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:52:27,206 INFO L124 PetriNetUnfolderBase]: 4394/6785 cut-off events. [2024-06-27 20:52:27,206 INFO L125 PetriNetUnfolderBase]: For 1004826/1004826 co-relation queries the response was YES. [2024-06-27 20:52:27,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78393 conditions, 6785 events. 4394/6785 cut-off events. For 1004826/1004826 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 40620 event pairs, 731 based on Foata normal form. 12/6789 useless extension candidates. Maximal degree in co-relation 78186. Up to 6370 conditions per place. [2024-06-27 20:52:27,325 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 649 selfloop transitions, 40 changer transitions 0/693 dead transitions. [2024-06-27 20:52:27,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 693 transitions, 14445 flow [2024-06-27 20:52:27,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:52:27,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:52:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 20:52:27,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2024-06-27 20:52:27,326 INFO L175 Difference]: Start difference. First operand has 447 places, 672 transitions, 12666 flow. Second operand 8 states and 139 transitions. [2024-06-27 20:52:27,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 693 transitions, 14445 flow [2024-06-27 20:52:31,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 693 transitions, 14102 flow, removed 162 selfloop flow, removed 3 redundant places. [2024-06-27 20:52:31,572 INFO L231 Difference]: Finished difference. Result has 452 places, 672 transitions, 12447 flow [2024-06-27 20:52:31,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12363, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12447, PETRI_PLACES=452, PETRI_TRANSITIONS=672} [2024-06-27 20:52:31,572 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 411 predicate places. [2024-06-27 20:52:31,572 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 672 transitions, 12447 flow [2024-06-27 20:52:31,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:31,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:31,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:31,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:52:31,573 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:31,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash 307089676, now seen corresponding path program 5 times [2024-06-27 20:52:31,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:31,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723862422] [2024-06-27 20:52:31,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:31,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:52:32,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:52:32,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:52:32,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723862422] [2024-06-27 20:52:32,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723862422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:52:32,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:52:32,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:52:32,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264451929] [2024-06-27 20:52:32,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:52:32,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:52:32,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:52:32,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:52:32,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:52:32,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:52:32,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 672 transitions, 12447 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:32,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:52:32,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:52:32,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:52:34,594 INFO L124 PetriNetUnfolderBase]: 4403/6796 cut-off events. [2024-06-27 20:52:34,594 INFO L125 PetriNetUnfolderBase]: For 958095/958095 co-relation queries the response was YES. [2024-06-27 20:52:34,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78021 conditions, 6796 events. 4403/6796 cut-off events. For 958095/958095 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 40660 event pairs, 759 based on Foata normal form. 5/6793 useless extension candidates. Maximal degree in co-relation 77813. Up to 6433 conditions per place. [2024-06-27 20:52:34,714 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 629 selfloop transitions, 63 changer transitions 0/696 dead transitions. [2024-06-27 20:52:34,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 696 transitions, 14294 flow [2024-06-27 20:52:34,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:52:34,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:52:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 20:52:34,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 20:52:34,715 INFO L175 Difference]: Start difference. First operand has 452 places, 672 transitions, 12447 flow. Second operand 8 states and 135 transitions. [2024-06-27 20:52:34,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 696 transitions, 14294 flow [2024-06-27 20:52:38,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 696 transitions, 14101 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 20:52:38,826 INFO L231 Difference]: Finished difference. Result has 453 places, 679 transitions, 12749 flow [2024-06-27 20:52:38,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12254, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=672, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=609, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12749, PETRI_PLACES=453, PETRI_TRANSITIONS=679} [2024-06-27 20:52:38,827 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 412 predicate places. [2024-06-27 20:52:38,827 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 679 transitions, 12749 flow [2024-06-27 20:52:38,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:38,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:38,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:38,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:52:38,827 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:38,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:38,828 INFO L85 PathProgramCache]: Analyzing trace with hash 307089924, now seen corresponding path program 13 times [2024-06-27 20:52:38,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:38,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621344307] [2024-06-27 20:52:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:38,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:52:39,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:52:39,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:52:39,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621344307] [2024-06-27 20:52:39,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621344307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:52:39,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:52:39,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:52:39,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735803530] [2024-06-27 20:52:39,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:52:39,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:52:39,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:52:39,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:52:39,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:52:39,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:52:39,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 679 transitions, 12749 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:39,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:52:39,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:52:39,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:52:41,881 INFO L124 PetriNetUnfolderBase]: 4411/6814 cut-off events. [2024-06-27 20:52:41,881 INFO L125 PetriNetUnfolderBase]: For 1008677/1008680 co-relation queries the response was YES. [2024-06-27 20:52:41,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77581 conditions, 6814 events. 4411/6814 cut-off events. For 1008677/1008680 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 40823 event pairs, 753 based on Foata normal form. 24/6831 useless extension candidates. Maximal degree in co-relation 77372. Up to 6441 conditions per place. [2024-06-27 20:52:42,003 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 658 selfloop transitions, 40 changer transitions 0/702 dead transitions. [2024-06-27 20:52:42,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 702 transitions, 14502 flow [2024-06-27 20:52:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:52:42,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:52:42,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 20:52:42,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 20:52:42,005 INFO L175 Difference]: Start difference. First operand has 453 places, 679 transitions, 12749 flow. Second operand 8 states and 134 transitions. [2024-06-27 20:52:42,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 702 transitions, 14502 flow [2024-06-27 20:52:45,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 702 transitions, 14093 flow, removed 148 selfloop flow, removed 7 redundant places. [2024-06-27 20:52:45,754 INFO L231 Difference]: Finished difference. Result has 454 places, 681 transitions, 12493 flow [2024-06-27 20:52:45,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12340, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12493, PETRI_PLACES=454, PETRI_TRANSITIONS=681} [2024-06-27 20:52:45,754 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 413 predicate places. [2024-06-27 20:52:45,754 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 681 transitions, 12493 flow [2024-06-27 20:52:45,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:45,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:45,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:45,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:52:45,755 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:45,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:45,755 INFO L85 PathProgramCache]: Analyzing trace with hash -87286112, now seen corresponding path program 16 times [2024-06-27 20:52:45,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:45,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014280487] [2024-06-27 20:52:45,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:45,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:52:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:52:46,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:52:46,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014280487] [2024-06-27 20:52:46,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014280487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:52:46,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:52:46,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:52:46,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796990188] [2024-06-27 20:52:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:52:46,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:52:46,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:52:46,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:52:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:52:46,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:52:46,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 681 transitions, 12493 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:46,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:52:46,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:52:46,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:52:48,698 INFO L124 PetriNetUnfolderBase]: 4419/6824 cut-off events. [2024-06-27 20:52:48,698 INFO L125 PetriNetUnfolderBase]: For 915758/915761 co-relation queries the response was YES. [2024-06-27 20:52:48,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76977 conditions, 6824 events. 4419/6824 cut-off events. For 915758/915761 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 40907 event pairs, 747 based on Foata normal form. 10/6827 useless extension candidates. Maximal degree in co-relation 76768. Up to 6518 conditions per place. [2024-06-27 20:52:48,820 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 658 selfloop transitions, 41 changer transitions 0/703 dead transitions. [2024-06-27 20:52:48,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 703 transitions, 14227 flow [2024-06-27 20:52:48,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:52:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:52:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 20:52:48,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-27 20:52:48,822 INFO L175 Difference]: Start difference. First operand has 454 places, 681 transitions, 12493 flow. Second operand 9 states and 146 transitions. [2024-06-27 20:52:48,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 703 transitions, 14227 flow [2024-06-27 20:52:52,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 703 transitions, 14050 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-06-27 20:52:52,947 INFO L231 Difference]: Finished difference. Result has 459 places, 685 transitions, 12620 flow [2024-06-27 20:52:52,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12322, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=640, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12620, PETRI_PLACES=459, PETRI_TRANSITIONS=685} [2024-06-27 20:52:52,947 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 418 predicate places. [2024-06-27 20:52:52,947 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 685 transitions, 12620 flow [2024-06-27 20:52:52,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:52,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:52,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:52,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:52:52,948 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:52,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:52,948 INFO L85 PathProgramCache]: Analyzing trace with hash -87286329, now seen corresponding path program 19 times [2024-06-27 20:52:52,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:52,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784045870] [2024-06-27 20:52:52,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:52,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:52:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:52:53,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:52:53,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784045870] [2024-06-27 20:52:53,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784045870] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:52:53,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:52:53,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:52:53,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344332779] [2024-06-27 20:52:53,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:52:53,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:52:53,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:52:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:52:53,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:52:54,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:52:54,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 685 transitions, 12620 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:54,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:52:54,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:52:54,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:52:56,241 INFO L124 PetriNetUnfolderBase]: 4413/6824 cut-off events. [2024-06-27 20:52:56,241 INFO L125 PetriNetUnfolderBase]: For 890755/890758 co-relation queries the response was YES. [2024-06-27 20:52:56,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76789 conditions, 6824 events. 4413/6824 cut-off events. For 890755/890758 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 41105 event pairs, 742 based on Foata normal form. 4/6821 useless extension candidates. Maximal degree in co-relation 76579. Up to 6534 conditions per place. [2024-06-27 20:52:56,365 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 659 selfloop transitions, 39 changer transitions 0/702 dead transitions. [2024-06-27 20:52:56,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 702 transitions, 14134 flow [2024-06-27 20:52:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:52:56,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:52:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 20:52:56,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3875 [2024-06-27 20:52:56,367 INFO L175 Difference]: Start difference. First operand has 459 places, 685 transitions, 12620 flow. Second operand 10 states and 155 transitions. [2024-06-27 20:52:56,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 702 transitions, 14134 flow [2024-06-27 20:52:59,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 702 transitions, 13800 flow, removed 130 selfloop flow, removed 7 redundant places. [2024-06-27 20:52:59,904 INFO L231 Difference]: Finished difference. Result has 462 places, 685 transitions, 12370 flow [2024-06-27 20:52:59,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12286, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12370, PETRI_PLACES=462, PETRI_TRANSITIONS=685} [2024-06-27 20:52:59,905 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 421 predicate places. [2024-06-27 20:52:59,905 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 685 transitions, 12370 flow [2024-06-27 20:52:59,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:52:59,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:52:59,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:52:59,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:52:59,906 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:52:59,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:52:59,907 INFO L85 PathProgramCache]: Analyzing trace with hash -2120675630, now seen corresponding path program 14 times [2024-06-27 20:52:59,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:52:59,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258799763] [2024-06-27 20:52:59,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:52:59,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:52:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:53:00,733 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 20:53:00,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:53:00,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258799763] [2024-06-27 20:53:00,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258799763] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:53:00,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:53:00,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:53:00,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587495215] [2024-06-27 20:53:00,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:53:00,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:53:00,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:53:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:53:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:53:00,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:53:00,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 685 transitions, 12370 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:00,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:53:00,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:53:00,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:53:03,026 INFO L124 PetriNetUnfolderBase]: 4500/6963 cut-off events. [2024-06-27 20:53:03,026 INFO L125 PetriNetUnfolderBase]: For 992573/992573 co-relation queries the response was YES. [2024-06-27 20:53:03,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79439 conditions, 6963 events. 4500/6963 cut-off events. For 992573/992573 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 41990 event pairs, 729 based on Foata normal form. 8/6963 useless extension candidates. Maximal degree in co-relation 79228. Up to 6087 conditions per place. [2024-06-27 20:53:03,148 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 617 selfloop transitions, 89 changer transitions 0/710 dead transitions. [2024-06-27 20:53:03,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 710 transitions, 14486 flow [2024-06-27 20:53:03,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:53:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:53:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 20:53:03,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:53:03,149 INFO L175 Difference]: Start difference. First operand has 462 places, 685 transitions, 12370 flow. Second operand 8 states and 140 transitions. [2024-06-27 20:53:03,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 710 transitions, 14486 flow [2024-06-27 20:53:07,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 710 transitions, 14211 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 20:53:07,316 INFO L231 Difference]: Finished difference. Result has 460 places, 687 transitions, 12381 flow [2024-06-27 20:53:07,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12095, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12381, PETRI_PLACES=460, PETRI_TRANSITIONS=687} [2024-06-27 20:53:07,316 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 419 predicate places. [2024-06-27 20:53:07,316 INFO L495 AbstractCegarLoop]: Abstraction has has 460 places, 687 transitions, 12381 flow [2024-06-27 20:53:07,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:07,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:53:07,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:53:07,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:53:07,317 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:53:07,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:53:07,317 INFO L85 PathProgramCache]: Analyzing trace with hash 132926094, now seen corresponding path program 6 times [2024-06-27 20:53:07,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:53:07,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189741112] [2024-06-27 20:53:07,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:53:07,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:53:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:53:08,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:53:08,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:53:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189741112] [2024-06-27 20:53:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189741112] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:53:08,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:53:08,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:53:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018287677] [2024-06-27 20:53:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:53:08,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:53:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:53:08,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:53:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:53:08,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:53:08,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 687 transitions, 12381 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:08,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:53:08,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:53:08,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:53:10,368 INFO L124 PetriNetUnfolderBase]: 4494/6951 cut-off events. [2024-06-27 20:53:10,369 INFO L125 PetriNetUnfolderBase]: For 968325/968325 co-relation queries the response was YES. [2024-06-27 20:53:10,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79358 conditions, 6951 events. 4494/6951 cut-off events. For 968325/968325 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 41943 event pairs, 757 based on Foata normal form. 2/6945 useless extension candidates. Maximal degree in co-relation 79146. Up to 6515 conditions per place. [2024-06-27 20:53:10,496 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 610 selfloop transitions, 89 changer transitions 0/703 dead transitions. [2024-06-27 20:53:10,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 703 transitions, 13917 flow [2024-06-27 20:53:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:53:10,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:53:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 20:53:10,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:53:10,497 INFO L175 Difference]: Start difference. First operand has 460 places, 687 transitions, 12381 flow. Second operand 8 states and 136 transitions. [2024-06-27 20:53:10,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 703 transitions, 13917 flow [2024-06-27 20:53:14,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 703 transitions, 13694 flow, removed 64 selfloop flow, removed 5 redundant places. [2024-06-27 20:53:14,930 INFO L231 Difference]: Finished difference. Result has 463 places, 687 transitions, 12351 flow [2024-06-27 20:53:14,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12158, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12351, PETRI_PLACES=463, PETRI_TRANSITIONS=687} [2024-06-27 20:53:14,931 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 422 predicate places. [2024-06-27 20:53:14,931 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 687 transitions, 12351 flow [2024-06-27 20:53:14,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:14,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:53:14,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:53:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:53:14,931 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:53:14,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:53:14,932 INFO L85 PathProgramCache]: Analyzing trace with hash 484221444, now seen corresponding path program 15 times [2024-06-27 20:53:14,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:53:14,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110320188] [2024-06-27 20:53:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:53:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:53:14,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:53:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:53:15,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:53:15,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110320188] [2024-06-27 20:53:15,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110320188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:53:15,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:53:15,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:53:15,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262342124] [2024-06-27 20:53:15,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:53:15,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:53:15,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:53:15,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:53:15,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:53:15,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:53:15,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 687 transitions, 12351 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:15,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:53:15,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:53:15,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:53:17,967 INFO L124 PetriNetUnfolderBase]: 4517/6988 cut-off events. [2024-06-27 20:53:17,968 INFO L125 PetriNetUnfolderBase]: For 997957/997957 co-relation queries the response was YES. [2024-06-27 20:53:18,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79476 conditions, 6988 events. 4517/6988 cut-off events. For 997957/997957 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 42198 event pairs, 740 based on Foata normal form. 10/6990 useless extension candidates. Maximal degree in co-relation 79263. Up to 6480 conditions per place. [2024-06-27 20:53:18,096 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 624 selfloop transitions, 81 changer transitions 0/709 dead transitions. [2024-06-27 20:53:18,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 709 transitions, 14133 flow [2024-06-27 20:53:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:53:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:53:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 20:53:18,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-27 20:53:18,097 INFO L175 Difference]: Start difference. First operand has 463 places, 687 transitions, 12351 flow. Second operand 8 states and 138 transitions. [2024-06-27 20:53:18,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 709 transitions, 14133 flow [2024-06-27 20:53:22,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 709 transitions, 13914 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 20:53:22,107 INFO L231 Difference]: Finished difference. Result has 464 places, 688 transitions, 12352 flow [2024-06-27 20:53:22,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12132, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=687, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=12352, PETRI_PLACES=464, PETRI_TRANSITIONS=688} [2024-06-27 20:53:22,108 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 423 predicate places. [2024-06-27 20:53:22,108 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 688 transitions, 12352 flow [2024-06-27 20:53:22,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:22,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:53:22,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:53:22,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 20:53:22,109 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:53:22,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:53:22,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2031479893, now seen corresponding path program 20 times [2024-06-27 20:53:22,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:53:22,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833935841] [2024-06-27 20:53:22,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:53:22,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:53:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:53:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:53:23,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:53:23,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833935841] [2024-06-27 20:53:23,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833935841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:53:23,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:53:23,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:53:23,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156850622] [2024-06-27 20:53:23,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:53:23,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:53:23,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:53:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:53:23,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:53:23,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:53:23,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 688 transitions, 12352 flow. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:23,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:53:23,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:53:23,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:53:25,245 INFO L124 PetriNetUnfolderBase]: 4511/6982 cut-off events. [2024-06-27 20:53:25,245 INFO L125 PetriNetUnfolderBase]: For 946898/946901 co-relation queries the response was YES. [2024-06-27 20:53:25,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79172 conditions, 6982 events. 4511/6982 cut-off events. For 946898/946901 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 42248 event pairs, 757 based on Foata normal form. 4/6979 useless extension candidates. Maximal degree in co-relation 78959. Up to 6527 conditions per place. [2024-06-27 20:53:25,372 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 617 selfloop transitions, 92 changer transitions 0/713 dead transitions. [2024-06-27 20:53:25,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 713 transitions, 13956 flow [2024-06-27 20:53:25,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:53:25,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:53:25,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 20:53:25,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:53:25,373 INFO L175 Difference]: Start difference. First operand has 464 places, 688 transitions, 12352 flow. Second operand 9 states and 153 transitions. [2024-06-27 20:53:25,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 713 transitions, 13956 flow [2024-06-27 20:53:29,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 713 transitions, 13710 flow, removed 45 selfloop flow, removed 6 redundant places. [2024-06-27 20:53:29,061 INFO L231 Difference]: Finished difference. Result has 467 places, 688 transitions, 12300 flow [2024-06-27 20:53:29,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12106, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12300, PETRI_PLACES=467, PETRI_TRANSITIONS=688} [2024-06-27 20:53:29,062 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 426 predicate places. [2024-06-27 20:53:29,062 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 688 transitions, 12300 flow [2024-06-27 20:53:29,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:29,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:53:29,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:53:29,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 20:53:29,063 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:53:29,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:53:29,063 INFO L85 PathProgramCache]: Analyzing trace with hash -891830944, now seen corresponding path program 1 times [2024-06-27 20:53:29,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:53:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272131] [2024-06-27 20:53:29,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:53:29,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:53:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:53:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:53:30,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:53:30,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272131] [2024-06-27 20:53:30,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:53:30,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:53:30,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:53:30,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569609226] [2024-06-27 20:53:30,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:53:30,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:53:30,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:53:30,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:53:30,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:53:31,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:53:31,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 688 transitions, 12300 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:31,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:53:31,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:53:31,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:53:33,645 INFO L124 PetriNetUnfolderBase]: 5033/7813 cut-off events. [2024-06-27 20:53:33,645 INFO L125 PetriNetUnfolderBase]: For 1559421/1559424 co-relation queries the response was YES. [2024-06-27 20:53:33,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93438 conditions, 7813 events. 5033/7813 cut-off events. For 1559421/1559424 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 47725 event pairs, 851 based on Foata normal form. 50/7856 useless extension candidates. Maximal degree in co-relation 93224. Up to 6334 conditions per place. [2024-06-27 20:53:33,790 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 619 selfloop transitions, 117 changer transitions 5/745 dead transitions. [2024-06-27 20:53:33,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 745 transitions, 14787 flow [2024-06-27 20:53:33,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:53:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:53:33,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 206 transitions. [2024-06-27 20:53:33,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681818181818182 [2024-06-27 20:53:33,791 INFO L175 Difference]: Start difference. First operand has 467 places, 688 transitions, 12300 flow. Second operand 11 states and 206 transitions. [2024-06-27 20:53:33,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 745 transitions, 14787 flow [2024-06-27 20:53:39,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 745 transitions, 14566 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 20:53:39,038 INFO L231 Difference]: Finished difference. Result has 472 places, 697 transitions, 12628 flow [2024-06-27 20:53:39,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12081, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12628, PETRI_PLACES=472, PETRI_TRANSITIONS=697} [2024-06-27 20:53:39,038 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 431 predicate places. [2024-06-27 20:53:39,038 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 697 transitions, 12628 flow [2024-06-27 20:53:39,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:39,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:53:39,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:53:39,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 20:53:39,039 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:53:39,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:53:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash -891770494, now seen corresponding path program 2 times [2024-06-27 20:53:39,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:53:39,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752005466] [2024-06-27 20:53:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:53:39,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:53:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:53:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:53:40,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:53:40,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752005466] [2024-06-27 20:53:40,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752005466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:53:40,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:53:40,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:53:40,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500031457] [2024-06-27 20:53:40,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:53:40,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:53:40,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:53:40,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:53:40,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:53:40,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:53:40,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 697 transitions, 12628 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:40,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:53:40,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:53:40,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:53:43,691 INFO L124 PetriNetUnfolderBase]: 5214/8096 cut-off events. [2024-06-27 20:53:43,691 INFO L125 PetriNetUnfolderBase]: For 1613864/1613867 co-relation queries the response was YES. [2024-06-27 20:53:43,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97510 conditions, 8096 events. 5214/8096 cut-off events. For 1613864/1613867 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 49721 event pairs, 1038 based on Foata normal form. 56/8145 useless extension candidates. Maximal degree in co-relation 97293. Up to 7134 conditions per place. [2024-06-27 20:53:43,837 INFO L140 encePairwiseOnDemand]: 27/40 looper letters, 612 selfloop transitions, 129 changer transitions 4/749 dead transitions. [2024-06-27 20:53:43,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 749 transitions, 14753 flow [2024-06-27 20:53:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:53:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:53:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 198 transitions. [2024-06-27 20:53:43,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 20:53:43,838 INFO L175 Difference]: Start difference. First operand has 472 places, 697 transitions, 12628 flow. Second operand 11 states and 198 transitions. [2024-06-27 20:53:43,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 749 transitions, 14753 flow [2024-06-27 20:53:49,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 749 transitions, 14402 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-27 20:53:49,486 INFO L231 Difference]: Finished difference. Result has 476 places, 712 transitions, 12882 flow [2024-06-27 20:53:49,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12309, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=12882, PETRI_PLACES=476, PETRI_TRANSITIONS=712} [2024-06-27 20:53:49,487 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 435 predicate places. [2024-06-27 20:53:49,487 INFO L495 AbstractCegarLoop]: Abstraction has has 476 places, 712 transitions, 12882 flow [2024-06-27 20:53:49,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:49,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:53:49,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:53:49,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 20:53:49,487 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:53:49,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:53:49,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1373080788, now seen corresponding path program 1 times [2024-06-27 20:53:49,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:53:49,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422705869] [2024-06-27 20:53:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:53:49,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:53:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:53:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:53:50,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:53:50,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422705869] [2024-06-27 20:53:50,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422705869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:53:50,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:53:50,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:53:50,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916290508] [2024-06-27 20:53:50,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:53:50,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:53:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:53:50,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:53:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:53:50,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:53:50,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 712 transitions, 12882 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:50,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:53:50,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:53:50,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:53:53,147 INFO L124 PetriNetUnfolderBase]: 5271/8211 cut-off events. [2024-06-27 20:53:53,147 INFO L125 PetriNetUnfolderBase]: For 1694276/1694279 co-relation queries the response was YES. [2024-06-27 20:53:53,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92938 conditions, 8211 events. 5271/8211 cut-off events. For 1694276/1694279 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 50798 event pairs, 1024 based on Foata normal form. 116/8320 useless extension candidates. Maximal degree in co-relation 92719. Up to 6676 conditions per place. [2024-06-27 20:53:53,303 INFO L140 encePairwiseOnDemand]: 28/40 looper letters, 607 selfloop transitions, 127 changer transitions 6/744 dead transitions. [2024-06-27 20:53:53,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 744 transitions, 14783 flow [2024-06-27 20:53:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:53:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:53:53,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 20:53:53,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 20:53:53,304 INFO L175 Difference]: Start difference. First operand has 476 places, 712 transitions, 12882 flow. Second operand 9 states and 165 transitions. [2024-06-27 20:53:53,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 744 transitions, 14783 flow [2024-06-27 20:53:58,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 744 transitions, 14447 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-06-27 20:53:58,743 INFO L231 Difference]: Finished difference. Result has 477 places, 711 transitions, 12923 flow [2024-06-27 20:53:58,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12566, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12923, PETRI_PLACES=477, PETRI_TRANSITIONS=711} [2024-06-27 20:53:58,743 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 436 predicate places. [2024-06-27 20:53:58,743 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 711 transitions, 12923 flow [2024-06-27 20:53:58,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:58,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:53:58,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:53:58,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 20:53:58,744 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:53:58,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:53:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash -773504874, now seen corresponding path program 2 times [2024-06-27 20:53:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:53:58,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680945911] [2024-06-27 20:53:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:53:58,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:53:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:53:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:53:59,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:53:59,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680945911] [2024-06-27 20:53:59,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680945911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:53:59,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:53:59,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:53:59,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646016779] [2024-06-27 20:53:59,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:53:59,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:53:59,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:53:59,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:53:59,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:53:59,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:53:59,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 711 transitions, 12923 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:53:59,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:53:59,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:53:59,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:54:02,414 INFO L124 PetriNetUnfolderBase]: 5191/8095 cut-off events. [2024-06-27 20:54:02,414 INFO L125 PetriNetUnfolderBase]: For 1076816/1076816 co-relation queries the response was YES. [2024-06-27 20:54:02,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91394 conditions, 8095 events. 5191/8095 cut-off events. For 1076816/1076816 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 50292 event pairs, 1067 based on Foata normal form. 2/8094 useless extension candidates. Maximal degree in co-relation 91174. Up to 7777 conditions per place. [2024-06-27 20:54:02,568 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 691 selfloop transitions, 46 changer transitions 0/741 dead transitions. [2024-06-27 20:54:02,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 741 transitions, 14662 flow [2024-06-27 20:54:02,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:54:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:54:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 20:54:02,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 20:54:02,569 INFO L175 Difference]: Start difference. First operand has 477 places, 711 transitions, 12923 flow. Second operand 9 states and 152 transitions. [2024-06-27 20:54:02,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 741 transitions, 14662 flow [2024-06-27 20:54:07,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 741 transitions, 14386 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-27 20:54:07,709 INFO L231 Difference]: Finished difference. Result has 482 places, 718 transitions, 12928 flow [2024-06-27 20:54:07,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12647, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12928, PETRI_PLACES=482, PETRI_TRANSITIONS=718} [2024-06-27 20:54:07,710 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 441 predicate places. [2024-06-27 20:54:07,710 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 718 transitions, 12928 flow [2024-06-27 20:54:07,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:07,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:54:07,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:54:07,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 20:54:07,711 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:54:07,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:54:07,711 INFO L85 PathProgramCache]: Analyzing trace with hash -773498364, now seen corresponding path program 3 times [2024-06-27 20:54:07,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:54:07,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139241934] [2024-06-27 20:54:07,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:54:07,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:54:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:54:08,964 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 20:54:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:54:08,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139241934] [2024-06-27 20:54:08,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139241934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:54:08,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:54:08,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:54:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271217681] [2024-06-27 20:54:08,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:54:08,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:54:08,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:54:08,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:54:08,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:54:09,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:54:09,149 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 718 transitions, 12928 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:09,149 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:54:09,149 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:54:09,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:54:12,230 INFO L124 PetriNetUnfolderBase]: 5199/8115 cut-off events. [2024-06-27 20:54:12,231 INFO L125 PetriNetUnfolderBase]: For 1069180/1069180 co-relation queries the response was YES. [2024-06-27 20:54:12,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90995 conditions, 8115 events. 5199/8115 cut-off events. For 1069180/1069180 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 50430 event pairs, 1050 based on Foata normal form. 2/8114 useless extension candidates. Maximal degree in co-relation 90771. Up to 7769 conditions per place. [2024-06-27 20:54:12,396 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 690 selfloop transitions, 51 changer transitions 0/745 dead transitions. [2024-06-27 20:54:12,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 745 transitions, 14627 flow [2024-06-27 20:54:12,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:54:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:54:12,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 152 transitions. [2024-06-27 20:54:12,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2024-06-27 20:54:12,397 INFO L175 Difference]: Start difference. First operand has 482 places, 718 transitions, 12928 flow. Second operand 9 states and 152 transitions. [2024-06-27 20:54:12,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 745 transitions, 14627 flow [2024-06-27 20:54:17,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 745 transitions, 14498 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-06-27 20:54:17,224 INFO L231 Difference]: Finished difference. Result has 488 places, 722 transitions, 13029 flow [2024-06-27 20:54:17,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12799, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=668, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13029, PETRI_PLACES=488, PETRI_TRANSITIONS=722} [2024-06-27 20:54:17,225 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 447 predicate places. [2024-06-27 20:54:17,225 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 722 transitions, 13029 flow [2024-06-27 20:54:17,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:17,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:54:17,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:54:17,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 20:54:17,226 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:54:17,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:54:17,226 INFO L85 PathProgramCache]: Analyzing trace with hash -773682814, now seen corresponding path program 3 times [2024-06-27 20:54:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:54:17,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497106627] [2024-06-27 20:54:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:54:17,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:54:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:54:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:54:18,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:54:18,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497106627] [2024-06-27 20:54:18,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497106627] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:54:18,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:54:18,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:54:18,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827954729] [2024-06-27 20:54:18,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:54:18,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:54:18,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:54:18,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:54:18,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:54:18,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:54:18,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 722 transitions, 13029 flow. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:18,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:54:18,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:54:18,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:54:21,357 INFO L124 PetriNetUnfolderBase]: 5235/8163 cut-off events. [2024-06-27 20:54:21,357 INFO L125 PetriNetUnfolderBase]: For 1133256/1133256 co-relation queries the response was YES. [2024-06-27 20:54:21,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91955 conditions, 8163 events. 5235/8163 cut-off events. For 1133256/1133256 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 50787 event pairs, 1066 based on Foata normal form. 10/8170 useless extension candidates. Maximal degree in co-relation 91729. Up to 7752 conditions per place. [2024-06-27 20:54:21,498 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 687 selfloop transitions, 59 changer transitions 0/750 dead transitions. [2024-06-27 20:54:21,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 750 transitions, 14804 flow [2024-06-27 20:54:21,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:54:21,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:54:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 159 transitions. [2024-06-27 20:54:21,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 20:54:21,499 INFO L175 Difference]: Start difference. First operand has 488 places, 722 transitions, 13029 flow. Second operand 9 states and 159 transitions. [2024-06-27 20:54:21,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 750 transitions, 14804 flow [2024-06-27 20:54:26,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 750 transitions, 14655 flow, removed 48 selfloop flow, removed 5 redundant places. [2024-06-27 20:54:26,292 INFO L231 Difference]: Finished difference. Result has 492 places, 723 transitions, 13053 flow [2024-06-27 20:54:26,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12880, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=663, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13053, PETRI_PLACES=492, PETRI_TRANSITIONS=723} [2024-06-27 20:54:26,293 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 451 predicate places. [2024-06-27 20:54:26,293 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 723 transitions, 13053 flow [2024-06-27 20:54:26,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 10 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:26,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:54:26,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:54:26,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 20:54:26,294 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:54:26,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:54:26,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1660440182, now seen corresponding path program 4 times [2024-06-27 20:54:26,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:54:26,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198334233] [2024-06-27 20:54:26,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:54:26,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:54:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:54:27,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:54:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:54:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198334233] [2024-06-27 20:54:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198334233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:54:27,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:54:27,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:54:27,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253842933] [2024-06-27 20:54:27,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:54:27,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:54:27,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:54:27,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:54:27,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:54:27,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:54:27,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 723 transitions, 13053 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:27,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:54:27,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:54:27,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:54:30,580 INFO L124 PetriNetUnfolderBase]: 5279/8239 cut-off events. [2024-06-27 20:54:30,580 INFO L125 PetriNetUnfolderBase]: For 1169831/1169831 co-relation queries the response was YES. [2024-06-27 20:54:30,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93064 conditions, 8239 events. 5279/8239 cut-off events. For 1169831/1169831 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 51418 event pairs, 1126 based on Foata normal form. 12/8248 useless extension candidates. Maximal degree in co-relation 92836. Up to 7913 conditions per place. [2024-06-27 20:54:30,725 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 714 selfloop transitions, 30 changer transitions 0/748 dead transitions. [2024-06-27 20:54:30,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 748 transitions, 14818 flow [2024-06-27 20:54:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:54:30,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:54:30,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 20:54:30,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41944444444444445 [2024-06-27 20:54:30,726 INFO L175 Difference]: Start difference. First operand has 492 places, 723 transitions, 13053 flow. Second operand 9 states and 151 transitions. [2024-06-27 20:54:30,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 748 transitions, 14818 flow [2024-06-27 20:54:35,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 748 transitions, 14703 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 20:54:35,395 INFO L231 Difference]: Finished difference. Result has 495 places, 724 transitions, 13054 flow [2024-06-27 20:54:35,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12938, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=723, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=693, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13054, PETRI_PLACES=495, PETRI_TRANSITIONS=724} [2024-06-27 20:54:35,396 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 454 predicate places. [2024-06-27 20:54:35,396 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 724 transitions, 13054 flow [2024-06-27 20:54:35,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:35,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:54:35,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:54:35,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 20:54:35,396 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:54:35,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:54:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1654190582, now seen corresponding path program 5 times [2024-06-27 20:54:35,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:54:35,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297201169] [2024-06-27 20:54:35,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:54:35,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:54:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:54:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:54:36,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:54:36,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297201169] [2024-06-27 20:54:36,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297201169] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:54:36,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:54:36,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:54:36,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746707292] [2024-06-27 20:54:36,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:54:36,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:54:36,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:54:36,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:54:36,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:54:36,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:54:36,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 724 transitions, 13054 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:36,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:54:36,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:54:36,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:54:39,509 INFO L124 PetriNetUnfolderBase]: 5307/8275 cut-off events. [2024-06-27 20:54:39,510 INFO L125 PetriNetUnfolderBase]: For 1160976/1160976 co-relation queries the response was YES. [2024-06-27 20:54:39,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93448 conditions, 8275 events. 5307/8275 cut-off events. For 1160976/1160976 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 51645 event pairs, 1127 based on Foata normal form. 8/8280 useless extension candidates. Maximal degree in co-relation 93219. Up to 7919 conditions per place. [2024-06-27 20:54:39,671 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 716 selfloop transitions, 32 changer transitions 0/752 dead transitions. [2024-06-27 20:54:39,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 752 transitions, 14861 flow [2024-06-27 20:54:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:54:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:54:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 154 transitions. [2024-06-27 20:54:39,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42777777777777776 [2024-06-27 20:54:39,672 INFO L175 Difference]: Start difference. First operand has 495 places, 724 transitions, 13054 flow. Second operand 9 states and 154 transitions. [2024-06-27 20:54:39,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 752 transitions, 14861 flow [2024-06-27 20:54:45,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 752 transitions, 14775 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 20:54:45,083 INFO L231 Difference]: Finished difference. Result has 497 places, 725 transitions, 13088 flow [2024-06-27 20:54:45,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12968, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=692, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13088, PETRI_PLACES=497, PETRI_TRANSITIONS=725} [2024-06-27 20:54:45,084 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 456 predicate places. [2024-06-27 20:54:45,084 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 725 transitions, 13088 flow [2024-06-27 20:54:45,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:45,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:54:45,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:54:45,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 20:54:45,084 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:54:45,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:54:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1660677332, now seen corresponding path program 6 times [2024-06-27 20:54:45,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:54:45,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543236023] [2024-06-27 20:54:45,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:54:45,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:54:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:54:46,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:54:46,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:54:46,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543236023] [2024-06-27 20:54:46,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543236023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:54:46,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:54:46,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:54:46,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693182598] [2024-06-27 20:54:46,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:54:46,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:54:46,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:54:46,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:54:46,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:54:46,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:54:46,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 725 transitions, 13088 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:46,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:54:46,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:54:46,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:54:49,143 INFO L124 PetriNetUnfolderBase]: 5335/8319 cut-off events. [2024-06-27 20:54:49,143 INFO L125 PetriNetUnfolderBase]: For 1175490/1175490 co-relation queries the response was YES. [2024-06-27 20:54:49,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93869 conditions, 8319 events. 5335/8319 cut-off events. For 1175490/1175490 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 51960 event pairs, 1134 based on Foata normal form. 8/8324 useless extension candidates. Maximal degree in co-relation 93639. Up to 8031 conditions per place. [2024-06-27 20:54:49,286 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 718 selfloop transitions, 26 changer transitions 0/748 dead transitions. [2024-06-27 20:54:49,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 748 transitions, 14737 flow [2024-06-27 20:54:49,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:54:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:54:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 20:54:49,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40555555555555556 [2024-06-27 20:54:49,287 INFO L175 Difference]: Start difference. First operand has 497 places, 725 transitions, 13088 flow. Second operand 9 states and 146 transitions. [2024-06-27 20:54:49,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 748 transitions, 14737 flow [2024-06-27 20:54:54,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 748 transitions, 14635 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 20:54:54,169 INFO L231 Difference]: Finished difference. Result has 499 places, 726 transitions, 13096 flow [2024-06-27 20:54:54,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=12986, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=699, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13096, PETRI_PLACES=499, PETRI_TRANSITIONS=726} [2024-06-27 20:54:54,169 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 458 predicate places. [2024-06-27 20:54:54,169 INFO L495 AbstractCegarLoop]: Abstraction has has 499 places, 726 transitions, 13096 flow [2024-06-27 20:54:54,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:54,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:54:54,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:54:54,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 20:54:54,170 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:54:54,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:54:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1520998366, now seen corresponding path program 7 times [2024-06-27 20:54:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:54:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10676438] [2024-06-27 20:54:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:54:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:54:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:54:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:54:55,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:54:55,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10676438] [2024-06-27 20:54:55,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10676438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:54:55,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:54:55,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:54:55,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214001213] [2024-06-27 20:54:55,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:54:55,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:54:55,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:54:55,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:54:55,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:54:55,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:54:55,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 499 places, 726 transitions, 13096 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:54:55,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:54:55,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:54:55,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:54:58,248 INFO L124 PetriNetUnfolderBase]: 5363/8365 cut-off events. [2024-06-27 20:54:58,249 INFO L125 PetriNetUnfolderBase]: For 1191543/1191543 co-relation queries the response was YES. [2024-06-27 20:54:58,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94286 conditions, 8365 events. 5363/8365 cut-off events. For 1191543/1191543 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 52382 event pairs, 1085 based on Foata normal form. 8/8370 useless extension candidates. Maximal degree in co-relation 94055. Up to 8085 conditions per place. [2024-06-27 20:54:58,394 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 723 selfloop transitions, 18 changer transitions 0/745 dead transitions. [2024-06-27 20:54:58,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 745 transitions, 14720 flow [2024-06-27 20:54:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:54:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:54:58,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 140 transitions. [2024-06-27 20:54:58,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-06-27 20:54:58,395 INFO L175 Difference]: Start difference. First operand has 499 places, 726 transitions, 13096 flow. Second operand 9 states and 140 transitions. [2024-06-27 20:54:58,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 745 transitions, 14720 flow [2024-06-27 20:55:03,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 745 transitions, 14628 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 20:55:03,467 INFO L231 Difference]: Finished difference. Result has 501 places, 727 transitions, 13100 flow [2024-06-27 20:55:03,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13004, PETRI_DIFFERENCE_MINUEND_PLACES=492, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13100, PETRI_PLACES=501, PETRI_TRANSITIONS=727} [2024-06-27 20:55:03,468 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 460 predicate places. [2024-06-27 20:55:03,468 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 727 transitions, 13100 flow [2024-06-27 20:55:03,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:55:03,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:55:03,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:55:03,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 20:55:03,468 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:55:03,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:55:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1116630132, now seen corresponding path program 8 times [2024-06-27 20:55:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:55:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960130075] [2024-06-27 20:55:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:55:03,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:55:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:55:04,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:55:04,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:55:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960130075] [2024-06-27 20:55:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960130075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:55:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:55:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:55:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375794535] [2024-06-27 20:55:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:55:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:55:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:55:04,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:55:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:55:04,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:55:04,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 727 transitions, 13100 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:55:04,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:55:04,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:55:04,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:55:07,847 INFO L124 PetriNetUnfolderBase]: 5394/8408 cut-off events. [2024-06-27 20:55:07,847 INFO L125 PetriNetUnfolderBase]: For 1223062/1223062 co-relation queries the response was YES. [2024-06-27 20:55:07,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94655 conditions, 8408 events. 5394/8408 cut-off events. For 1223062/1223062 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 52635 event pairs, 1165 based on Foata normal form. 12/8417 useless extension candidates. Maximal degree in co-relation 94423. Up to 8109 conditions per place. [2024-06-27 20:55:07,994 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 721 selfloop transitions, 23 changer transitions 0/748 dead transitions. [2024-06-27 20:55:07,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 748 transitions, 14856 flow [2024-06-27 20:55:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:55:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:55:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 20:55:07,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4027777777777778 [2024-06-27 20:55:07,995 INFO L175 Difference]: Start difference. First operand has 501 places, 727 transitions, 13100 flow. Second operand 9 states and 145 transitions. [2024-06-27 20:55:07,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 748 transitions, 14856 flow [2024-06-27 20:55:13,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 748 transitions, 14778 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 20:55:13,193 INFO L231 Difference]: Finished difference. Result has 503 places, 728 transitions, 13132 flow [2024-06-27 20:55:13,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13022, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13132, PETRI_PLACES=503, PETRI_TRANSITIONS=728} [2024-06-27 20:55:13,194 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 462 predicate places. [2024-06-27 20:55:13,194 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 728 transitions, 13132 flow [2024-06-27 20:55:13,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:55:13,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:55:13,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:55:13,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 20:55:13,195 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:55:13,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:55:13,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1116636642, now seen corresponding path program 9 times [2024-06-27 20:55:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:55:13,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848459607] [2024-06-27 20:55:13,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:55:13,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:55:13,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:55:14,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:55:14,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:55:14,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848459607] [2024-06-27 20:55:14,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848459607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:55:14,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:55:14,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:55:14,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557079442] [2024-06-27 20:55:14,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:55:14,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:55:14,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:55:14,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:55:14,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:55:14,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:55:14,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 728 transitions, 13132 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:55:14,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:55:14,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:55:14,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:55:17,483 INFO L124 PetriNetUnfolderBase]: 5422/8456 cut-off events. [2024-06-27 20:55:17,483 INFO L125 PetriNetUnfolderBase]: For 1213467/1213467 co-relation queries the response was YES. [2024-06-27 20:55:17,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95128 conditions, 8456 events. 5422/8456 cut-off events. For 1213467/1213467 co-relation queries the response was YES. Maximal size of possible extension queue 561. Compared 53032 event pairs, 1157 based on Foata normal form. 8/8461 useless extension candidates. Maximal degree in co-relation 94895. Up to 8115 conditions per place. [2024-06-27 20:55:17,642 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 723 selfloop transitions, 25 changer transitions 0/752 dead transitions. [2024-06-27 20:55:17,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 752 transitions, 14930 flow [2024-06-27 20:55:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:55:17,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:55:17,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 20:55:17,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4111111111111111 [2024-06-27 20:55:17,643 INFO L175 Difference]: Start difference. First operand has 503 places, 728 transitions, 13132 flow. Second operand 9 states and 148 transitions. [2024-06-27 20:55:17,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 752 transitions, 14930 flow [2024-06-27 20:55:23,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 752 transitions, 14860 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-27 20:55:23,532 INFO L231 Difference]: Finished difference. Result has 507 places, 729 transitions, 13176 flow [2024-06-27 20:55:23,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13062, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13176, PETRI_PLACES=507, PETRI_TRANSITIONS=729} [2024-06-27 20:55:23,533 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 466 predicate places. [2024-06-27 20:55:23,533 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 729 transitions, 13176 flow [2024-06-27 20:55:23,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:55:23,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:55:23,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:55:23,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 20:55:23,534 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:55:23,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:55:23,534 INFO L85 PathProgramCache]: Analyzing trace with hash 598396694, now seen corresponding path program 10 times [2024-06-27 20:55:23,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:55:23,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598949031] [2024-06-27 20:55:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:55:23,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:55:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:55:24,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:55:24,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:55:24,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598949031] [2024-06-27 20:55:24,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598949031] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:55:24,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:55:24,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:55:24,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989037347] [2024-06-27 20:55:24,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:55:24,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:55:24,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:55:24,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:55:24,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:55:24,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:55:24,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 729 transitions, 13176 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:55:24,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:55:24,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:55:24,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:55:27,611 INFO L124 PetriNetUnfolderBase]: 5438/8476 cut-off events. [2024-06-27 20:55:27,612 INFO L125 PetriNetUnfolderBase]: For 1184205/1184205 co-relation queries the response was YES. [2024-06-27 20:55:27,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95085 conditions, 8476 events. 5438/8476 cut-off events. For 1184205/1184205 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 53169 event pairs, 1169 based on Foata normal form. 2/8475 useless extension candidates. Maximal degree in co-relation 94851. Up to 8231 conditions per place. [2024-06-27 20:55:27,773 INFO L140 encePairwiseOnDemand]: 29/40 looper letters, 724 selfloop transitions, 20 changer transitions 0/748 dead transitions. [2024-06-27 20:55:27,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 748 transitions, 14798 flow [2024-06-27 20:55:27,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:55:27,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:55:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 138 transitions. [2024-06-27 20:55:27,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38333333333333336 [2024-06-27 20:55:27,775 INFO L175 Difference]: Start difference. First operand has 507 places, 729 transitions, 13176 flow. Second operand 9 states and 138 transitions. [2024-06-27 20:55:27,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 748 transitions, 14798 flow [2024-06-27 20:55:33,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 748 transitions, 14696 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 20:55:33,310 INFO L231 Difference]: Finished difference. Result has 509 places, 733 transitions, 13222 flow [2024-06-27 20:55:33,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=13074, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=13222, PETRI_PLACES=509, PETRI_TRANSITIONS=733} [2024-06-27 20:55:33,311 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 468 predicate places. [2024-06-27 20:55:33,311 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 733 transitions, 13222 flow [2024-06-27 20:55:33,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:55:33,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:55:33,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:55:33,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 20:55:33,312 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr2ASSERT_VIOLATIONWITNESS_INVARIANT (and 3 more)] === [2024-06-27 20:55:33,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:55:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1344768432, now seen corresponding path program 11 times [2024-06-27 20:55:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:55:33,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29425891] [2024-06-27 20:55:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:55:33,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:55:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:55:34,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:55:34,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:55:34,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29425891] [2024-06-27 20:55:34,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29425891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:55:34,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:55:34,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:55:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225829313] [2024-06-27 20:55:34,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:55:34,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:55:34,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:55:34,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:55:34,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:55:34,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-06-27 20:55:34,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 733 transitions, 13222 flow. Second operand has 11 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:55:34,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:55:34,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-06-27 20:55:34,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand