./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/mix009.oepc.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/mix009.oepc.i ./goblint.2024-06-19_11-23-25.files/protection/mix009.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-27 18:15:53,922 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:15:54,006 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:15:54,014 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:15:54,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:15:54,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:15:54,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:15:54,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:15:54,040 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:15:54,044 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:15:54,044 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:15:54,044 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:15:54,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:15:54,046 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:15:54,046 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:15:54,047 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:15:54,047 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:15:54,047 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:15:54,047 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:15:54,048 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:15:54,048 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:15:54,048 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:15:54,049 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:15:54,049 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:15:54,049 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:15:54,049 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:15:54,050 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:15:54,050 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:15:54,050 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:15:54,051 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:15:54,052 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:15:54,052 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:15:54,052 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:15:54,052 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:15:54,053 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:15:54,053 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:15:54,053 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:15:54,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:15:54,054 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:15:54,054 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:15:54,055 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:15:54,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:15:54,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:15:54,055 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:15:54,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:15:54,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:15:54,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:15:54,411 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:15:54,411 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:15:54,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-27 18:15:55,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:15:55,887 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:15:55,888 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i [2024-06-27 18:15:55,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f292525b7/03f4b05b6cb64016913d861f844a2760/FLAGc8138cf80 [2024-06-27 18:15:55,923 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f292525b7/03f4b05b6cb64016913d861f844a2760 [2024-06-27 18:15:55,925 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:15:55,926 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:15:55,929 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/mix009.oepc.yml/witness.yml [2024-06-27 18:15:56,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:15:56,094 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:15:56,095 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:15:56,095 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:15:56,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:15:56,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:15:55" (1/2) ... [2024-06-27 18:15:56,107 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6169ad1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:15:56, skipping insertion in model container [2024-06-27 18:15:56,107 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:15:55" (1/2) ... [2024-06-27 18:15:56,109 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@c85fd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:15:56, skipping insertion in model container [2024-06-27 18:15:56,110 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:15:56" (2/2) ... [2024-06-27 18:15:56,110 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6169ad1a and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56, skipping insertion in model container [2024-06-27 18:15:56,112 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:15:56" (2/2) ... [2024-06-27 18:15:56,112 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:15:56,186 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:15:56,188 INFO L97 edCorrectnessWitness]: Location invariant before [L826-L826] (((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-27 18:15:56,188 INFO L97 edCorrectnessWitness]: Location invariant before [L825-L825] (((((((((((((((((! multithreaded || (z$mem_tmp == 0 || z$mem_tmp == 1)) && (! multithreaded || z$r_buff1_thd2 == (_Bool)0)) && (! multithreaded || z$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || z$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || z$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || z$flush_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || z$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || z$read_delayed == (_Bool)0)) && (! multithreaded || (z$w_buff0 == 0 || z$w_buff0 == 1))) && (! multithreaded || (z$w_buff1 == 0 || z$w_buff1 == 1)) [2024-06-27 18:15:56,188 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:15:56,188 INFO L106 edCorrectnessWitness]: ghost_update [L823-L823] multithreaded = 1; [2024-06-27 18:15:56,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:15:56,421 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i[945,958] [2024-06-27 18:15:56,648 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:15:56,658 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:15:56,695 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix009.oepc.i[945,958] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:15:56,745 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:15:56,780 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:15:56,781 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56 WrapperNode [2024-06-27 18:15:56,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:15:56,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:15:56,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:15:56,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:15:56,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,833 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 118 [2024-06-27 18:15:56,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:15:56,835 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:15:56,835 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:15:56,835 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:15:56,843 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,846 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,862 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-27 18:15:56,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:15:56,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:15:56,880 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:15:56,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:15:56,881 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (1/1) ... [2024-06-27 18:15:56,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:15:56,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:15:56,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-27 18:15:56,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-27 18:15:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:15:56,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:15:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:15:56,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:15:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:15:56,996 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:15:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:15:56,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:15:56,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:15:56,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:15:56,998 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 18:15:57,120 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:15:57,122 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:15:57,398 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:15:57,399 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:15:57,545 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:15:57,546 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:15:57,551 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:15:57 BoogieIcfgContainer [2024-06-27 18:15:57,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:15:57,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:15:57,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:15:57,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:15:57,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:15:55" (1/4) ... [2024-06-27 18:15:57,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757c80a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:15:57, skipping insertion in model container [2024-06-27 18:15:57,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:15:56" (2/4) ... [2024-06-27 18:15:57,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757c80a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:15:57, skipping insertion in model container [2024-06-27 18:15:57,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:15:56" (3/4) ... [2024-06-27 18:15:57,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@757c80a8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:15:57, skipping insertion in model container [2024-06-27 18:15:57,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:15:57" (4/4) ... [2024-06-27 18:15:57,561 INFO L112 eAbstractionObserver]: Analyzing ICFG mix009.oepc.i [2024-06-27 18:15:57,576 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:15:57,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:15:57,576 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:15:57,621 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:15:57,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 18:15:57,691 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-06-27 18:15:57,691 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:15:57,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 57 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-06-27 18:15:57,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 84 flow [2024-06-27 18:15:57,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 36 transitions, 78 flow [2024-06-27 18:15:57,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:15:57,723 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;@60df22ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:15:57,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:15:57,727 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:15:57,728 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:15:57,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:15:57,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:57,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:15:57,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:57,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:57,735 INFO L85 PathProgramCache]: Analyzing trace with hash 319772151, now seen corresponding path program 1 times [2024-06-27 18:15:57,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:57,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852375021] [2024-06-27 18:15:57,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:57,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:58,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:58,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:58,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852375021] [2024-06-27 18:15:58,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852375021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:58,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:58,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:15:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222306422] [2024-06-27 18:15:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:58,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:15:58,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:58,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:15:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:15:58,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 18:15:58,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:58,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:58,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 18:15:58,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:58,989 INFO L124 PetriNetUnfolderBase]: 475/853 cut-off events. [2024-06-27 18:15:58,989 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 18:15:58,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 853 events. 475/853 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4447 event pairs, 182 based on Foata normal form. 43/833 useless extension candidates. Maximal degree in co-relation 1658. Up to 787 conditions per place. [2024-06-27 18:15:58,999 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 30 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2024-06-27 18:15:58,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 46 transitions, 169 flow [2024-06-27 18:15:59,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:15:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:15:59,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-06-27 18:15:59,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-06-27 18:15:59,013 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 78 flow. Second operand 3 states and 80 transitions. [2024-06-27 18:15:59,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 46 transitions, 169 flow [2024-06-27 18:15:59,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:15:59,018 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 102 flow [2024-06-27 18:15:59,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2024-06-27 18:15:59,023 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-27 18:15:59,023 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 102 flow [2024-06-27 18:15:59,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:59,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:59,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:15:59,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:15:59,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:59,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:59,025 INFO L85 PathProgramCache]: Analyzing trace with hash 319772997, now seen corresponding path program 1 times [2024-06-27 18:15:59,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:59,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701445955] [2024-06-27 18:15:59,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:59,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:15:59,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:59,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701445955] [2024-06-27 18:15:59,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701445955] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:59,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:59,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:15:59,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829743296] [2024-06-27 18:15:59,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:59,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:15:59,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:59,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:15:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:15:59,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2024-06-27 18:15:59,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:59,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:59,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2024-06-27 18:15:59,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:59,187 INFO L124 PetriNetUnfolderBase]: 169/421 cut-off events. [2024-06-27 18:15:59,188 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2024-06-27 18:15:59,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 421 events. 169/421 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2288 event pairs, 96 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 778. Up to 256 conditions per place. [2024-06-27 18:15:59,191 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 23 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-06-27 18:15:59,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 173 flow [2024-06-27 18:15:59,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:15:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:15:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 88 transitions. [2024-06-27 18:15:59,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7719298245614035 [2024-06-27 18:15:59,193 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 102 flow. Second operand 3 states and 88 transitions. [2024-06-27 18:15:59,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 173 flow [2024-06-27 18:15:59,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:15:59,195 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 94 flow [2024-06-27 18:15:59,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2024-06-27 18:15:59,196 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2024-06-27 18:15:59,196 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 94 flow [2024-06-27 18:15:59,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:59,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:59,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:59,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:15:59,197 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:59,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:59,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1936590603, now seen corresponding path program 1 times [2024-06-27 18:15:59,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:59,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392696153] [2024-06-27 18:15:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:59,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:15:59,654 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 18:15:59,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:15:59,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392696153] [2024-06-27 18:15:59,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392696153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:15:59,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:15:59,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:15:59,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631260940] [2024-06-27 18:15:59,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:15:59,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:15:59,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:15:59,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:15:59,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:15:59,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2024-06-27 18:15:59,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:59,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:15:59,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2024-06-27 18:15:59,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:15:59,829 INFO L124 PetriNetUnfolderBase]: 342/711 cut-off events. [2024-06-27 18:15:59,829 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-06-27 18:15:59,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1462 conditions, 711 events. 342/711 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3864 event pairs, 160 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 1449. Up to 562 conditions per place. [2024-06-27 18:15:59,835 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 34 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2024-06-27 18:15:59,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 52 transitions, 220 flow [2024-06-27 18:15:59,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:15:59,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:15:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-27 18:15:59,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631578947368421 [2024-06-27 18:15:59,837 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 94 flow. Second operand 4 states and 96 transitions. [2024-06-27 18:15:59,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 52 transitions, 220 flow [2024-06-27 18:15:59,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 52 transitions, 212 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:15:59,839 INFO L231 Difference]: Finished difference. Result has 45 places, 40 transitions, 137 flow [2024-06-27 18:15:59,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=45, PETRI_TRANSITIONS=40} [2024-06-27 18:15:59,840 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2024-06-27 18:15:59,841 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 40 transitions, 137 flow [2024-06-27 18:15:59,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:15:59,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:15:59,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:15:59,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:15:59,842 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:15:59,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:15:59,842 INFO L85 PathProgramCache]: Analyzing trace with hash 95234092, now seen corresponding path program 1 times [2024-06-27 18:15:59,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:15:59,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743397980] [2024-06-27 18:15:59,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:15:59,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:15:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:00,351 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 18:16:00,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:00,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743397980] [2024-06-27 18:16:00,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743397980] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:00,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:00,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:16:00,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968400516] [2024-06-27 18:16:00,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:00,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:16:00,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:00,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:16:00,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:16:00,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 18:16:00,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 40 transitions, 137 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:00,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:00,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 18:16:00,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:00,640 INFO L124 PetriNetUnfolderBase]: 406/849 cut-off events. [2024-06-27 18:16:00,641 INFO L125 PetriNetUnfolderBase]: For 339/339 co-relation queries the response was YES. [2024-06-27 18:16:00,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1881 conditions, 849 events. 406/849 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4706 event pairs, 235 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 1866. Up to 651 conditions per place. [2024-06-27 18:16:00,647 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 42 selfloop transitions, 8 changer transitions 0/61 dead transitions. [2024-06-27 18:16:00,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 293 flow [2024-06-27 18:16:00,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:16:00,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:16:00,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 115 transitions. [2024-06-27 18:16:00,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2024-06-27 18:16:00,650 INFO L175 Difference]: Start difference. First operand has 45 places, 40 transitions, 137 flow. Second operand 5 states and 115 transitions. [2024-06-27 18:16:00,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 293 flow [2024-06-27 18:16:00,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 286 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:00,655 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 165 flow [2024-06-27 18:16:00,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2024-06-27 18:16:00,657 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2024-06-27 18:16:00,657 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 165 flow [2024-06-27 18:16:00,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:00,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:00,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:00,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:16:00,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:00,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:00,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1342709772, now seen corresponding path program 1 times [2024-06-27 18:16:00,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:00,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602342589] [2024-06-27 18:16:00,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:00,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:01,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:01,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602342589] [2024-06-27 18:16:01,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602342589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:01,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:01,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:16:01,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731353467] [2024-06-27 18:16:01,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:01,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:16:01,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:01,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:16:01,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:16:01,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-06-27 18:16:01,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:01,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:01,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-06-27 18:16:01,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:01,541 INFO L124 PetriNetUnfolderBase]: 406/834 cut-off events. [2024-06-27 18:16:01,542 INFO L125 PetriNetUnfolderBase]: For 583/583 co-relation queries the response was YES. [2024-06-27 18:16:01,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1995 conditions, 834 events. 406/834 cut-off events. For 583/583 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4537 event pairs, 139 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 1978. Up to 636 conditions per place. [2024-06-27 18:16:01,548 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 49 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2024-06-27 18:16:01,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 70 transitions, 359 flow [2024-06-27 18:16:01,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:01,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:01,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 137 transitions. [2024-06-27 18:16:01,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6008771929824561 [2024-06-27 18:16:01,550 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 165 flow. Second operand 6 states and 137 transitions. [2024-06-27 18:16:01,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 70 transitions, 359 flow [2024-06-27 18:16:01,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 342 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:01,554 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 189 flow [2024-06-27 18:16:01,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-27 18:16:01,555 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2024-06-27 18:16:01,555 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 189 flow [2024-06-27 18:16:01,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:01,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:01,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:01,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:16:01,556 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:01,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:01,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1139281081, now seen corresponding path program 1 times [2024-06-27 18:16:01,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:01,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400812642] [2024-06-27 18:16:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:01,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:02,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:02,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:02,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400812642] [2024-06-27 18:16:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400812642] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:02,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:16:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005612448] [2024-06-27 18:16:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:02,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:16:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:16:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:16:02,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:02,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 189 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:02,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:02,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:02,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:02,504 INFO L124 PetriNetUnfolderBase]: 603/1215 cut-off events. [2024-06-27 18:16:02,504 INFO L125 PetriNetUnfolderBase]: For 1112/1114 co-relation queries the response was YES. [2024-06-27 18:16:02,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 1215 events. 603/1215 cut-off events. For 1112/1114 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6833 event pairs, 274 based on Foata normal form. 3/1169 useless extension candidates. Maximal degree in co-relation 2944. Up to 987 conditions per place. [2024-06-27 18:16:02,513 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 41 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2024-06-27 18:16:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 58 transitions, 321 flow [2024-06-27 18:16:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:16:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:16:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2024-06-27 18:16:02,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48947368421052634 [2024-06-27 18:16:02,515 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 189 flow. Second operand 5 states and 93 transitions. [2024-06-27 18:16:02,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 58 transitions, 321 flow [2024-06-27 18:16:02,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 58 transitions, 298 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:02,521 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 198 flow [2024-06-27 18:16:02,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2024-06-27 18:16:02,524 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2024-06-27 18:16:02,524 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 198 flow [2024-06-27 18:16:02,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:02,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:02,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:02,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:16:02,525 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:02,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:02,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1853879565, now seen corresponding path program 1 times [2024-06-27 18:16:02,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:02,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136906482] [2024-06-27 18:16:02,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:02,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:02,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:03,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:03,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:03,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136906482] [2024-06-27 18:16:03,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136906482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:03,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:03,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:03,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976538855] [2024-06-27 18:16:03,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:03,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:03,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:03,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:03,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:03,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:16:03,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 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 18:16:03,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:03,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:16:03,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:03,865 INFO L124 PetriNetUnfolderBase]: 484/875 cut-off events. [2024-06-27 18:16:03,866 INFO L125 PetriNetUnfolderBase]: For 1237/1237 co-relation queries the response was YES. [2024-06-27 18:16:03,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 875 events. 484/875 cut-off events. For 1237/1237 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4447 event pairs, 81 based on Foata normal form. 2/869 useless extension candidates. Maximal degree in co-relation 2415. Up to 706 conditions per place. [2024-06-27 18:16:03,872 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 65 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2024-06-27 18:16:03,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 546 flow [2024-06-27 18:16:03,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 175 transitions. [2024-06-27 18:16:03,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756578947368421 [2024-06-27 18:16:03,874 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 198 flow. Second operand 8 states and 175 transitions. [2024-06-27 18:16:03,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 546 flow [2024-06-27 18:16:03,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 532 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:03,877 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 340 flow [2024-06-27 18:16:03,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=340, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2024-06-27 18:16:03,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places. [2024-06-27 18:16:03,879 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 340 flow [2024-06-27 18:16:03,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 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 18:16:03,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:03,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:03,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:16:03,880 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:03,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash 957976362, now seen corresponding path program 1 times [2024-06-27 18:16:03,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:03,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685531931] [2024-06-27 18:16:03,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:03,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:04,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:04,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:04,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685531931] [2024-06-27 18:16:04,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685531931] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:04,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:04,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:04,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783113518] [2024-06-27 18:16:04,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:04,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:04,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:04,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:04,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:04,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:04,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:04,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:04,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:04,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:05,019 INFO L124 PetriNetUnfolderBase]: 593/1108 cut-off events. [2024-06-27 18:16:05,019 INFO L125 PetriNetUnfolderBase]: For 1952/1958 co-relation queries the response was YES. [2024-06-27 18:16:05,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 1108 events. 593/1108 cut-off events. For 1952/1958 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5872 event pairs, 178 based on Foata normal form. 9/1091 useless extension candidates. Maximal degree in co-relation 3273. Up to 940 conditions per place. [2024-06-27 18:16:05,026 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 58 selfloop transitions, 10 changer transitions 0/78 dead transitions. [2024-06-27 18:16:05,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 78 transitions, 528 flow [2024-06-27 18:16:05,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:05,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-06-27 18:16:05,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49122807017543857 [2024-06-27 18:16:05,028 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 340 flow. Second operand 6 states and 112 transitions. [2024-06-27 18:16:05,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 78 transitions, 528 flow [2024-06-27 18:16:05,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 491 flow, removed 16 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:05,036 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 340 flow [2024-06-27 18:16:05,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=340, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2024-06-27 18:16:05,039 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2024-06-27 18:16:05,039 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 340 flow [2024-06-27 18:16:05,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:05,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:05,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:05,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:16:05,041 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:05,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:05,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1013284091, now seen corresponding path program 1 times [2024-06-27 18:16:05,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:05,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827912304] [2024-06-27 18:16:05,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:05,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:05,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:05,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:05,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827912304] [2024-06-27 18:16:05,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827912304] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:05,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:05,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:05,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322480589] [2024-06-27 18:16:05,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:05,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:05,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:05,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:05,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:05,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:05,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 340 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:05,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:05,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:05,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:06,060 INFO L124 PetriNetUnfolderBase]: 610/1147 cut-off events. [2024-06-27 18:16:06,060 INFO L125 PetriNetUnfolderBase]: For 2140/2143 co-relation queries the response was YES. [2024-06-27 18:16:06,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3533 conditions, 1147 events. 610/1147 cut-off events. For 2140/2143 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6190 event pairs, 140 based on Foata normal form. 4/1116 useless extension candidates. Maximal degree in co-relation 3505. Up to 965 conditions per place. [2024-06-27 18:16:06,069 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 63 selfloop transitions, 13 changer transitions 0/86 dead transitions. [2024-06-27 18:16:06,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 86 transitions, 591 flow [2024-06-27 18:16:06,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:06,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:06,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-06-27 18:16:06,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5043859649122807 [2024-06-27 18:16:06,071 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 340 flow. Second operand 6 states and 115 transitions. [2024-06-27 18:16:06,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 86 transitions, 591 flow [2024-06-27 18:16:06,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 86 transitions, 567 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:06,076 INFO L231 Difference]: Finished difference. Result has 70 places, 66 transitions, 400 flow [2024-06-27 18:16:06,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=70, PETRI_TRANSITIONS=66} [2024-06-27 18:16:06,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 28 predicate places. [2024-06-27 18:16:06,078 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 66 transitions, 400 flow [2024-06-27 18:16:06,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:06,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:06,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:06,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:16:06,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:06,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:06,082 INFO L85 PathProgramCache]: Analyzing trace with hash -346063961, now seen corresponding path program 2 times [2024-06-27 18:16:06,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:06,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182569554] [2024-06-27 18:16:06,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:06,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:06,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:06,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:06,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182569554] [2024-06-27 18:16:06,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182569554] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:06,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:06,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:16:06,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039443334] [2024-06-27 18:16:06,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:06,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:16:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:16:06,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:16:06,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:06,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 66 transitions, 400 flow. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:06,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:06,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:06,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:07,055 INFO L124 PetriNetUnfolderBase]: 607/1165 cut-off events. [2024-06-27 18:16:07,056 INFO L125 PetriNetUnfolderBase]: For 2664/2670 co-relation queries the response was YES. [2024-06-27 18:16:07,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3722 conditions, 1165 events. 607/1165 cut-off events. For 2664/2670 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6415 event pairs, 187 based on Foata normal form. 7/1137 useless extension candidates. Maximal degree in co-relation 3692. Up to 989 conditions per place. [2024-06-27 18:16:07,065 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 60 selfloop transitions, 10 changer transitions 0/80 dead transitions. [2024-06-27 18:16:07,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 80 transitions, 574 flow [2024-06-27 18:16:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:16:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:16:07,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-06-27 18:16:07,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 18:16:07,067 INFO L175 Difference]: Start difference. First operand has 70 places, 66 transitions, 400 flow. Second operand 6 states and 108 transitions. [2024-06-27 18:16:07,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 80 transitions, 574 flow [2024-06-27 18:16:07,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 564 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:07,075 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 415 flow [2024-06-27 18:16:07,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=415, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2024-06-27 18:16:07,077 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 33 predicate places. [2024-06-27 18:16:07,077 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 415 flow [2024-06-27 18:16:07,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:07,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:07,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:07,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:16:07,078 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:07,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:07,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1291407360, now seen corresponding path program 1 times [2024-06-27 18:16:07,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:07,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375865003] [2024-06-27 18:16:07,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:07,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:08,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:08,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375865003] [2024-06-27 18:16:08,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375865003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:08,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:08,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:08,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978365512] [2024-06-27 18:16:08,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:08,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:08,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:08,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:08,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:08,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-06-27 18:16:08,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 415 flow. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:08,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:08,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-06-27 18:16:08,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:08,550 INFO L124 PetriNetUnfolderBase]: 489/893 cut-off events. [2024-06-27 18:16:08,551 INFO L125 PetriNetUnfolderBase]: For 2928/2928 co-relation queries the response was YES. [2024-06-27 18:16:08,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3143 conditions, 893 events. 489/893 cut-off events. For 2928/2928 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4552 event pairs, 44 based on Foata normal form. 4/886 useless extension candidates. Maximal degree in co-relation 3111. Up to 677 conditions per place. [2024-06-27 18:16:08,558 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 74 selfloop transitions, 23 changer transitions 0/111 dead transitions. [2024-06-27 18:16:08,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 111 transitions, 725 flow [2024-06-27 18:16:08,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:08,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:08,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 191 transitions. [2024-06-27 18:16:08,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584795321637427 [2024-06-27 18:16:08,560 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 415 flow. Second operand 9 states and 191 transitions. [2024-06-27 18:16:08,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 111 transitions, 725 flow [2024-06-27 18:16:08,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 111 transitions, 694 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:08,569 INFO L231 Difference]: Finished difference. Result has 78 places, 65 transitions, 422 flow [2024-06-27 18:16:08,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=422, PETRI_PLACES=78, PETRI_TRANSITIONS=65} [2024-06-27 18:16:08,570 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places. [2024-06-27 18:16:08,570 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 65 transitions, 422 flow [2024-06-27 18:16:08,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:08,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:08,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:08,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:16:08,571 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:08,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:08,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1347214268, now seen corresponding path program 1 times [2024-06-27 18:16:08,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:08,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908737418] [2024-06-27 18:16:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:08,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:09,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:09,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:09,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908737418] [2024-06-27 18:16:09,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908737418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:09,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:09,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:09,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955983011] [2024-06-27 18:16:09,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:09,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:09,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:09,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:09,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:09,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:09,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 65 transitions, 422 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:09,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:09,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:09,605 INFO L124 PetriNetUnfolderBase]: 660/1202 cut-off events. [2024-06-27 18:16:09,605 INFO L125 PetriNetUnfolderBase]: For 3485/3485 co-relation queries the response was YES. [2024-06-27 18:16:09,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 1202 events. 660/1202 cut-off events. For 3485/3485 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6322 event pairs, 137 based on Foata normal form. 1/1168 useless extension candidates. Maximal degree in co-relation 4071. Up to 993 conditions per place. [2024-06-27 18:16:09,614 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 72 selfloop transitions, 18 changer transitions 0/97 dead transitions. [2024-06-27 18:16:09,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 97 transitions, 720 flow [2024-06-27 18:16:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:09,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-06-27 18:16:09,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2024-06-27 18:16:09,617 INFO L175 Difference]: Start difference. First operand has 78 places, 65 transitions, 422 flow. Second operand 7 states and 129 transitions. [2024-06-27 18:16:09,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 97 transitions, 720 flow [2024-06-27 18:16:09,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 97 transitions, 653 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:09,624 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 424 flow [2024-06-27 18:16:09,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=355, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=424, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2024-06-27 18:16:09,626 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 35 predicate places. [2024-06-27 18:16:09,626 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 424 flow [2024-06-27 18:16:09,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:09,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:09,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:09,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:16:09,627 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:09,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1895646164, now seen corresponding path program 1 times [2024-06-27 18:16:09,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:09,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082214547] [2024-06-27 18:16:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:10,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:10,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:10,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082214547] [2024-06-27 18:16:10,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082214547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:10,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:10,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:10,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630675414] [2024-06-27 18:16:10,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:10,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:10,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:10,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 424 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 18:16:10,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:10,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:10,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:10,667 INFO L124 PetriNetUnfolderBase]: 684/1271 cut-off events. [2024-06-27 18:16:10,668 INFO L125 PetriNetUnfolderBase]: For 4256/4259 co-relation queries the response was YES. [2024-06-27 18:16:10,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4249 conditions, 1271 events. 684/1271 cut-off events. For 4256/4259 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6916 event pairs, 151 based on Foata normal form. 6/1239 useless extension candidates. Maximal degree in co-relation 4216. Up to 983 conditions per place. [2024-06-27 18:16:10,678 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 75 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2024-06-27 18:16:10,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 105 transitions, 742 flow [2024-06-27 18:16:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:10,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 137 transitions. [2024-06-27 18:16:10,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150375939849624 [2024-06-27 18:16:10,680 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 424 flow. Second operand 7 states and 137 transitions. [2024-06-27 18:16:10,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 105 transitions, 742 flow [2024-06-27 18:16:10,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 105 transitions, 717 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:10,688 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 494 flow [2024-06-27 18:16:10,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=494, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-06-27 18:16:10,690 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 40 predicate places. [2024-06-27 18:16:10,690 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 494 flow [2024-06-27 18:16:10,691 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 18:16:10,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:10,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:10,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:16:10,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:10,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1895645916, now seen corresponding path program 2 times [2024-06-27 18:16:10,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:10,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166525049] [2024-06-27 18:16:10,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:10,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:11,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:11,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166525049] [2024-06-27 18:16:11,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166525049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:11,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:11,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:11,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132793293] [2024-06-27 18:16:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:11,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:11,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:11,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:11,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:11,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:11,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 494 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:11,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:11,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:11,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:11,786 INFO L124 PetriNetUnfolderBase]: 733/1339 cut-off events. [2024-06-27 18:16:11,787 INFO L125 PetriNetUnfolderBase]: For 5317/5317 co-relation queries the response was YES. [2024-06-27 18:16:11,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4907 conditions, 1339 events. 733/1339 cut-off events. For 5317/5317 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7185 event pairs, 152 based on Foata normal form. 1/1299 useless extension candidates. Maximal degree in co-relation 4871. Up to 1101 conditions per place. [2024-06-27 18:16:11,800 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 77 selfloop transitions, 19 changer transitions 0/103 dead transitions. [2024-06-27 18:16:11,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 103 transitions, 796 flow [2024-06-27 18:16:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-06-27 18:16:11,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774436090225564 [2024-06-27 18:16:11,803 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 494 flow. Second operand 7 states and 127 transitions. [2024-06-27 18:16:11,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 103 transitions, 796 flow [2024-06-27 18:16:11,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 103 transitions, 783 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:16:11,812 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 538 flow [2024-06-27 18:16:11,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=538, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-27 18:16:11,813 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 45 predicate places. [2024-06-27 18:16:11,813 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 538 flow [2024-06-27 18:16:11,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:11,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:11,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:11,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:16:11,814 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:11,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:11,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2137721480, now seen corresponding path program 2 times [2024-06-27 18:16:11,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:11,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158235427] [2024-06-27 18:16:11,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:11,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:12,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:12,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:12,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158235427] [2024-06-27 18:16:12,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158235427] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:12,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:12,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:12,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180460810] [2024-06-27 18:16:12,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:12,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:12,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:12,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:12,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:12,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:12,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 538 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 18:16:12,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:12,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:12,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:12,917 INFO L124 PetriNetUnfolderBase]: 723/1383 cut-off events. [2024-06-27 18:16:12,917 INFO L125 PetriNetUnfolderBase]: For 6124/6130 co-relation queries the response was YES. [2024-06-27 18:16:12,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4988 conditions, 1383 events. 723/1383 cut-off events. For 6124/6130 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7834 event pairs, 206 based on Foata normal form. 9/1347 useless extension candidates. Maximal degree in co-relation 4949. Up to 1124 conditions per place. [2024-06-27 18:16:12,928 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 73 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-27 18:16:12,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 99 transitions, 774 flow [2024-06-27 18:16:12,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:12,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-06-27 18:16:12,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4699248120300752 [2024-06-27 18:16:12,930 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 538 flow. Second operand 7 states and 125 transitions. [2024-06-27 18:16:12,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 99 transitions, 774 flow [2024-06-27 18:16:12,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 99 transitions, 741 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:12,941 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 556 flow [2024-06-27 18:16:12,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=556, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2024-06-27 18:16:12,942 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2024-06-27 18:16:12,943 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 556 flow [2024-06-27 18:16:12,943 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 18:16:12,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:12,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:12,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:16:12,943 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:12,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1491984948, now seen corresponding path program 3 times [2024-06-27 18:16:12,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:12,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007982988] [2024-06-27 18:16:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:12,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:12,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:13,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:13,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:13,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007982988] [2024-06-27 18:16:13,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007982988] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:13,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:13,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:13,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712341951] [2024-06-27 18:16:13,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:13,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:13,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:13,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:13,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:13,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:13,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 556 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:13,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:13,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:13,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:13,962 INFO L124 PetriNetUnfolderBase]: 764/1428 cut-off events. [2024-06-27 18:16:13,962 INFO L125 PetriNetUnfolderBase]: For 6836/6836 co-relation queries the response was YES. [2024-06-27 18:16:13,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5269 conditions, 1428 events. 764/1428 cut-off events. For 6836/6836 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7965 event pairs, 205 based on Foata normal form. 1/1383 useless extension candidates. Maximal degree in co-relation 5229. Up to 1215 conditions per place. [2024-06-27 18:16:13,979 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 80 selfloop transitions, 12 changer transitions 0/99 dead transitions. [2024-06-27 18:16:13,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 99 transitions, 792 flow [2024-06-27 18:16:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 18:16:13,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2024-06-27 18:16:13,981 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 556 flow. Second operand 7 states and 118 transitions. [2024-06-27 18:16:13,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 99 transitions, 792 flow [2024-06-27 18:16:13,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 99 transitions, 751 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:13,993 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 544 flow [2024-06-27 18:16:13,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=544, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-27 18:16:13,994 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-27 18:16:13,994 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 544 flow [2024-06-27 18:16:13,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:13,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:13,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:13,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:16:13,995 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:13,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:13,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1082259810, now seen corresponding path program 3 times [2024-06-27 18:16:13,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:13,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298776543] [2024-06-27 18:16:13,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:13,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:14,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:14,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:14,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298776543] [2024-06-27 18:16:14,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298776543] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:14,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:14,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:14,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768640799] [2024-06-27 18:16:14,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:14,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:14,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:14,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:14,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:14,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:14,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 544 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 18:16:14,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:14,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:14,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:15,156 INFO L124 PetriNetUnfolderBase]: 715/1368 cut-off events. [2024-06-27 18:16:15,156 INFO L125 PetriNetUnfolderBase]: For 6887/6893 co-relation queries the response was YES. [2024-06-27 18:16:15,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4931 conditions, 1368 events. 715/1368 cut-off events. For 6887/6893 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7770 event pairs, 198 based on Foata normal form. 9/1332 useless extension candidates. Maximal degree in co-relation 4891. Up to 1071 conditions per place. [2024-06-27 18:16:15,167 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 74 selfloop transitions, 16 changer transitions 0/103 dead transitions. [2024-06-27 18:16:15,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 103 transitions, 788 flow [2024-06-27 18:16:15,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:16:15,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:16:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-06-27 18:16:15,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48872180451127817 [2024-06-27 18:16:15,168 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 544 flow. Second operand 7 states and 130 transitions. [2024-06-27 18:16:15,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 103 transitions, 788 flow [2024-06-27 18:16:15,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 103 transitions, 744 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:15,179 INFO L231 Difference]: Finished difference. Result has 92 places, 80 transitions, 537 flow [2024-06-27 18:16:15,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=537, PETRI_PLACES=92, PETRI_TRANSITIONS=80} [2024-06-27 18:16:15,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 50 predicate places. [2024-06-27 18:16:15,180 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 80 transitions, 537 flow [2024-06-27 18:16:15,180 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 18:16:15,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:15,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:15,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:16:15,180 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:15,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:15,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1185881924, now seen corresponding path program 1 times [2024-06-27 18:16:15,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:15,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965453514] [2024-06-27 18:16:15,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:15,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:15,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965453514] [2024-06-27 18:16:15,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965453514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:15,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:15,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:15,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535099376] [2024-06-27 18:16:15,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:15,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:15,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:15,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:15,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:15,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:15,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 80 transitions, 537 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:15,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:15,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:15,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:16,302 INFO L124 PetriNetUnfolderBase]: 772/1393 cut-off events. [2024-06-27 18:16:16,303 INFO L125 PetriNetUnfolderBase]: For 7544/7544 co-relation queries the response was YES. [2024-06-27 18:16:16,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5268 conditions, 1393 events. 772/1393 cut-off events. For 7544/7544 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7565 event pairs, 148 based on Foata normal form. 1/1355 useless extension candidates. Maximal degree in co-relation 5227. Up to 1111 conditions per place. [2024-06-27 18:16:16,313 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 89 selfloop transitions, 25 changer transitions 0/121 dead transitions. [2024-06-27 18:16:16,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 121 transitions, 931 flow [2024-06-27 18:16:16,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:16,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2024-06-27 18:16:16,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4901315789473684 [2024-06-27 18:16:16,315 INFO L175 Difference]: Start difference. First operand has 92 places, 80 transitions, 537 flow. Second operand 8 states and 149 transitions. [2024-06-27 18:16:16,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 121 transitions, 931 flow [2024-06-27 18:16:16,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 121 transitions, 882 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:16,327 INFO L231 Difference]: Finished difference. Result has 95 places, 85 transitions, 587 flow [2024-06-27 18:16:16,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=587, PETRI_PLACES=95, PETRI_TRANSITIONS=85} [2024-06-27 18:16:16,328 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2024-06-27 18:16:16,328 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 85 transitions, 587 flow [2024-06-27 18:16:16,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:16,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:16,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:16,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:16:16,328 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:16,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:16,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1370081719, now seen corresponding path program 1 times [2024-06-27 18:16:16,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:16,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971517617] [2024-06-27 18:16:16,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:16,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:17,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:17,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971517617] [2024-06-27 18:16:17,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971517617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:17,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:17,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:17,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084160077] [2024-06-27 18:16:17,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:17,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:17,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:17,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:17,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:17,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 85 transitions, 587 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:17,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:17,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:17,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:17,573 INFO L124 PetriNetUnfolderBase]: 834/1497 cut-off events. [2024-06-27 18:16:17,574 INFO L125 PetriNetUnfolderBase]: For 8780/8780 co-relation queries the response was YES. [2024-06-27 18:16:17,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5773 conditions, 1497 events. 834/1497 cut-off events. For 8780/8780 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8248 event pairs, 168 based on Foata normal form. 3/1460 useless extension candidates. Maximal degree in co-relation 5730. Up to 1024 conditions per place. [2024-06-27 18:16:17,586 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 93 selfloop transitions, 28 changer transitions 0/128 dead transitions. [2024-06-27 18:16:17,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 128 transitions, 1005 flow [2024-06-27 18:16:17,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:17,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2024-06-27 18:16:17,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-06-27 18:16:17,590 INFO L175 Difference]: Start difference. First operand has 95 places, 85 transitions, 587 flow. Second operand 8 states and 154 transitions. [2024-06-27 18:16:17,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 128 transitions, 1005 flow [2024-06-27 18:16:17,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 128 transitions, 968 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:17,611 INFO L231 Difference]: Finished difference. Result has 99 places, 89 transitions, 643 flow [2024-06-27 18:16:17,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=643, PETRI_PLACES=99, PETRI_TRANSITIONS=89} [2024-06-27 18:16:17,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 57 predicate places. [2024-06-27 18:16:17,612 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 89 transitions, 643 flow [2024-06-27 18:16:17,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:17,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:17,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:17,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:16:17,613 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1186031654, now seen corresponding path program 2 times [2024-06-27 18:16:17,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:17,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884616267] [2024-06-27 18:16:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:18,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:18,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884616267] [2024-06-27 18:16:18,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884616267] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:18,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:18,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:18,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999554210] [2024-06-27 18:16:18,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:18,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:18,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:18,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:18,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:18,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:18,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 89 transitions, 643 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:18,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:18,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:18,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:18,811 INFO L124 PetriNetUnfolderBase]: 845/1526 cut-off events. [2024-06-27 18:16:18,811 INFO L125 PetriNetUnfolderBase]: For 9688/9688 co-relation queries the response was YES. [2024-06-27 18:16:18,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 1526 events. 845/1526 cut-off events. For 9688/9688 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8500 event pairs, 164 based on Foata normal form. 1/1482 useless extension candidates. Maximal degree in co-relation 6099. Up to 1219 conditions per place. [2024-06-27 18:16:18,819 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 92 selfloop transitions, 25 changer transitions 0/124 dead transitions. [2024-06-27 18:16:18,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 124 transitions, 1023 flow [2024-06-27 18:16:18,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:18,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:18,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-06-27 18:16:18,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2024-06-27 18:16:18,821 INFO L175 Difference]: Start difference. First operand has 99 places, 89 transitions, 643 flow. Second operand 8 states and 147 transitions. [2024-06-27 18:16:18,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 124 transitions, 1023 flow [2024-06-27 18:16:18,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 124 transitions, 986 flow, removed 6 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:18,838 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 675 flow [2024-06-27 18:16:18,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=675, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-06-27 18:16:18,839 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 61 predicate places. [2024-06-27 18:16:18,839 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 675 flow [2024-06-27 18:16:18,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:18,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:18,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:18,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:16:18,840 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:18,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:18,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1191596061, now seen corresponding path program 2 times [2024-06-27 18:16:18,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:18,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655912007] [2024-06-27 18:16:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:18,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:19,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:19,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:19,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655912007] [2024-06-27 18:16:19,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655912007] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:19,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:19,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:19,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126317979] [2024-06-27 18:16:19,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:19,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:19,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:19,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:19,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 675 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:19,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:19,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:19,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:20,060 INFO L124 PetriNetUnfolderBase]: 917/1614 cut-off events. [2024-06-27 18:16:20,060 INFO L125 PetriNetUnfolderBase]: For 11539/11539 co-relation queries the response was YES. [2024-06-27 18:16:20,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6709 conditions, 1614 events. 917/1614 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8822 event pairs, 172 based on Foata normal form. 3/1581 useless extension candidates. Maximal degree in co-relation 6662. Up to 1093 conditions per place. [2024-06-27 18:16:20,072 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 98 selfloop transitions, 29 changer transitions 0/134 dead transitions. [2024-06-27 18:16:20,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 134 transitions, 1151 flow [2024-06-27 18:16:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:20,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:20,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 156 transitions. [2024-06-27 18:16:20,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5131578947368421 [2024-06-27 18:16:20,075 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 675 flow. Second operand 8 states and 156 transitions. [2024-06-27 18:16:20,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 134 transitions, 1151 flow [2024-06-27 18:16:20,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 134 transitions, 1110 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:20,097 INFO L231 Difference]: Finished difference. Result has 106 places, 95 transitions, 729 flow [2024-06-27 18:16:20,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=729, PETRI_PLACES=106, PETRI_TRANSITIONS=95} [2024-06-27 18:16:20,098 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 64 predicate places. [2024-06-27 18:16:20,098 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 95 transitions, 729 flow [2024-06-27 18:16:20,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:20,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:20,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:20,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:16:20,099 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:20,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:20,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1364510089, now seen corresponding path program 3 times [2024-06-27 18:16:20,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:20,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634823244] [2024-06-27 18:16:20,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:20,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:20,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:20,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:20,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634823244] [2024-06-27 18:16:20,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634823244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:20,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:20,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:20,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357951111] [2024-06-27 18:16:20,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:20,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:20,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:20,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:20,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:20,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:20,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 95 transitions, 729 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:20,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:20,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:21,297 INFO L124 PetriNetUnfolderBase]: 911/1605 cut-off events. [2024-06-27 18:16:21,297 INFO L125 PetriNetUnfolderBase]: For 12153/12153 co-relation queries the response was YES. [2024-06-27 18:16:21,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6778 conditions, 1605 events. 911/1605 cut-off events. For 12153/12153 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8809 event pairs, 172 based on Foata normal form. 3/1572 useless extension candidates. Maximal degree in co-relation 6730. Up to 1089 conditions per place. [2024-06-27 18:16:21,309 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 94 selfloop transitions, 30 changer transitions 0/131 dead transitions. [2024-06-27 18:16:21,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 131 transitions, 1123 flow [2024-06-27 18:16:21,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 152 transitions. [2024-06-27 18:16:21,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 18:16:21,311 INFO L175 Difference]: Start difference. First operand has 106 places, 95 transitions, 729 flow. Second operand 8 states and 152 transitions. [2024-06-27 18:16:21,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 131 transitions, 1123 flow [2024-06-27 18:16:21,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 131 transitions, 1071 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 18:16:21,337 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 742 flow [2024-06-27 18:16:21,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=742, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2024-06-27 18:16:21,337 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 68 predicate places. [2024-06-27 18:16:21,338 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 742 flow [2024-06-27 18:16:21,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:21,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:21,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:16:21,338 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:21,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1364517746, now seen corresponding path program 3 times [2024-06-27 18:16:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:21,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130909213] [2024-06-27 18:16:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:21,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:21,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:22,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:22,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130909213] [2024-06-27 18:16:22,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130909213] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:22,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:22,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:22,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073916401] [2024-06-27 18:16:22,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:22,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:22,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:22,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:22,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:22,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:22,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 742 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:22,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:22,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:22,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:22,634 INFO L124 PetriNetUnfolderBase]: 922/1660 cut-off events. [2024-06-27 18:16:22,635 INFO L125 PetriNetUnfolderBase]: For 12897/12897 co-relation queries the response was YES. [2024-06-27 18:16:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6906 conditions, 1660 events. 922/1660 cut-off events. For 12897/12897 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 9391 event pairs, 185 based on Foata normal form. 1/1612 useless extension candidates. Maximal degree in co-relation 6857. Up to 1333 conditions per place. [2024-06-27 18:16:22,644 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 94 selfloop transitions, 26 changer transitions 0/127 dead transitions. [2024-06-27 18:16:22,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 127 transitions, 1128 flow [2024-06-27 18:16:22,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:22,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:16:22,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-27 18:16:22,646 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 742 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:16:22,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 127 transitions, 1128 flow [2024-06-27 18:16:22,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 127 transitions, 1063 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:22,666 INFO L231 Difference]: Finished difference. Result has 111 places, 97 transitions, 750 flow [2024-06-27 18:16:22,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=750, PETRI_PLACES=111, PETRI_TRANSITIONS=97} [2024-06-27 18:16:22,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2024-06-27 18:16:22,667 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 97 transitions, 750 flow [2024-06-27 18:16:22,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:22,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:22,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:16:22,669 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:22,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1467074589, now seen corresponding path program 4 times [2024-06-27 18:16:22,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:22,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601031665] [2024-06-27 18:16:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:23,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:23,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601031665] [2024-06-27 18:16:23,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601031665] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:23,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:23,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:23,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283797415] [2024-06-27 18:16:23,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:23,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:23,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:23,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:23,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:23,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:23,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 97 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:23,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:23,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:23,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:23,877 INFO L124 PetriNetUnfolderBase]: 955/1745 cut-off events. [2024-06-27 18:16:23,877 INFO L125 PetriNetUnfolderBase]: For 14316/14316 co-relation queries the response was YES. [2024-06-27 18:16:23,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7094 conditions, 1745 events. 955/1745 cut-off events. For 14316/14316 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 10133 event pairs, 244 based on Foata normal form. 3/1696 useless extension candidates. Maximal degree in co-relation 7044. Up to 1339 conditions per place. [2024-06-27 18:16:23,885 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 102 selfloop transitions, 21 changer transitions 0/130 dead transitions. [2024-06-27 18:16:23,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 130 transitions, 1146 flow [2024-06-27 18:16:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:23,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:23,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-06-27 18:16:23,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47368421052631576 [2024-06-27 18:16:23,887 INFO L175 Difference]: Start difference. First operand has 111 places, 97 transitions, 750 flow. Second operand 8 states and 144 transitions. [2024-06-27 18:16:23,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 130 transitions, 1146 flow [2024-06-27 18:16:23,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 130 transitions, 1103 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:23,904 INFO L231 Difference]: Finished difference. Result has 114 places, 99 transitions, 772 flow [2024-06-27 18:16:23,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=772, PETRI_PLACES=114, PETRI_TRANSITIONS=99} [2024-06-27 18:16:23,904 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2024-06-27 18:16:23,904 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 99 transitions, 772 flow [2024-06-27 18:16:23,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:23,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:23,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:23,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:16:23,905 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:23,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:23,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1163420839, now seen corresponding path program 5 times [2024-06-27 18:16:23,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:23,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044259899] [2024-06-27 18:16:23,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:23,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:24,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:24,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044259899] [2024-06-27 18:16:24,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044259899] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:24,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:24,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:24,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113452545] [2024-06-27 18:16:24,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:24,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:24,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:24,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:24,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:24,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:24,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 99 transitions, 772 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:24,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:24,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:24,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:25,017 INFO L124 PetriNetUnfolderBase]: 988/1788 cut-off events. [2024-06-27 18:16:25,017 INFO L125 PetriNetUnfolderBase]: For 15786/15786 co-relation queries the response was YES. [2024-06-27 18:16:25,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7392 conditions, 1788 events. 988/1788 cut-off events. For 15786/15786 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10357 event pairs, 260 based on Foata normal form. 3/1742 useless extension candidates. Maximal degree in co-relation 7341. Up to 1363 conditions per place. [2024-06-27 18:16:25,030 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 103 selfloop transitions, 22 changer transitions 0/132 dead transitions. [2024-06-27 18:16:25,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 1178 flow [2024-06-27 18:16:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:25,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:25,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:16:25,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4769736842105263 [2024-06-27 18:16:25,032 INFO L175 Difference]: Start difference. First operand has 114 places, 99 transitions, 772 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:16:25,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 1178 flow [2024-06-27 18:16:25,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 132 transitions, 1097 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:25,058 INFO L231 Difference]: Finished difference. Result has 115 places, 101 transitions, 762 flow [2024-06-27 18:16:25,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=762, PETRI_PLACES=115, PETRI_TRANSITIONS=101} [2024-06-27 18:16:25,058 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 73 predicate places. [2024-06-27 18:16:25,059 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 101 transitions, 762 flow [2024-06-27 18:16:25,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:25,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:25,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:25,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:16:25,059 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:25,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:25,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1410816510, now seen corresponding path program 4 times [2024-06-27 18:16:25,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:25,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909240309] [2024-06-27 18:16:25,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:25,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:25,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:25,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909240309] [2024-06-27 18:16:25,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909240309] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:25,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:25,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:25,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517853527] [2024-06-27 18:16:25,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:25,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:25,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:25,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:25,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:25,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:25,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 101 transitions, 762 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:25,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:25,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:25,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:26,151 INFO L124 PetriNetUnfolderBase]: 986/1813 cut-off events. [2024-06-27 18:16:26,152 INFO L125 PetriNetUnfolderBase]: For 15234/15234 co-relation queries the response was YES. [2024-06-27 18:16:26,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7293 conditions, 1813 events. 986/1813 cut-off events. For 15234/15234 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10649 event pairs, 284 based on Foata normal form. 1/1758 useless extension candidates. Maximal degree in co-relation 7241. Up to 1548 conditions per place. [2024-06-27 18:16:26,165 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 104 selfloop transitions, 14 changer transitions 0/125 dead transitions. [2024-06-27 18:16:26,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 125 transitions, 1066 flow [2024-06-27 18:16:26,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:26,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:16:26,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-06-27 18:16:26,167 INFO L175 Difference]: Start difference. First operand has 115 places, 101 transitions, 762 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:16:26,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 125 transitions, 1066 flow [2024-06-27 18:16:26,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 125 transitions, 1025 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:26,188 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 754 flow [2024-06-27 18:16:26,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=754, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2024-06-27 18:16:26,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 76 predicate places. [2024-06-27 18:16:26,189 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 754 flow [2024-06-27 18:16:26,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:26,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:26,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:26,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:16:26,190 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:26,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash 820131268, now seen corresponding path program 1 times [2024-06-27 18:16:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:26,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357437077] [2024-06-27 18:16:26,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:26,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:27,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:27,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357437077] [2024-06-27 18:16:27,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357437077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:27,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:27,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:16:27,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143710893] [2024-06-27 18:16:27,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:27,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:16:27,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:16:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:16:27,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:27,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 754 flow. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:27,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:27,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:27,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:27,626 INFO L124 PetriNetUnfolderBase]: 881/1668 cut-off events. [2024-06-27 18:16:27,627 INFO L125 PetriNetUnfolderBase]: For 15706/15712 co-relation queries the response was YES. [2024-06-27 18:16:27,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 1668 events. 881/1668 cut-off events. For 15706/15712 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10021 event pairs, 251 based on Foata normal form. 8/1628 useless extension candidates. Maximal degree in co-relation 6551. Up to 1321 conditions per place. [2024-06-27 18:16:27,638 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 93 selfloop transitions, 21 changer transitions 0/133 dead transitions. [2024-06-27 18:16:27,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 133 transitions, 1093 flow [2024-06-27 18:16:27,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:27,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:27,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 146 transitions. [2024-06-27 18:16:27,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:16:27,639 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 754 flow. Second operand 8 states and 146 transitions. [2024-06-27 18:16:27,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 133 transitions, 1093 flow [2024-06-27 18:16:27,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 133 transitions, 1064 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:27,666 INFO L231 Difference]: Finished difference. Result has 122 places, 108 transitions, 845 flow [2024-06-27 18:16:27,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=845, PETRI_PLACES=122, PETRI_TRANSITIONS=108} [2024-06-27 18:16:27,666 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 80 predicate places. [2024-06-27 18:16:27,666 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 108 transitions, 845 flow [2024-06-27 18:16:27,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 8 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:27,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:27,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:27,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:16:27,667 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:27,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:27,667 INFO L85 PathProgramCache]: Analyzing trace with hash 819775729, now seen corresponding path program 6 times [2024-06-27 18:16:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417761798] [2024-06-27 18:16:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:28,349 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 18:16:28,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:28,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417761798] [2024-06-27 18:16:28,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417761798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:28,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:28,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:28,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738823461] [2024-06-27 18:16:28,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:28,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:28,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:28,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:28,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:28,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:28,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 108 transitions, 845 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:28,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:28,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:28,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:28,854 INFO L124 PetriNetUnfolderBase]: 982/1812 cut-off events. [2024-06-27 18:16:28,854 INFO L125 PetriNetUnfolderBase]: For 16806/16806 co-relation queries the response was YES. [2024-06-27 18:16:28,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 1812 events. 982/1812 cut-off events. For 16806/16806 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 10699 event pairs, 269 based on Foata normal form. 3/1758 useless extension candidates. Maximal degree in co-relation 7389. Up to 1491 conditions per place. [2024-06-27 18:16:28,862 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 110 selfloop transitions, 16 changer transitions 0/133 dead transitions. [2024-06-27 18:16:28,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 133 transitions, 1173 flow [2024-06-27 18:16:28,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:28,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:28,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 18:16:28,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506578947368421 [2024-06-27 18:16:28,863 INFO L175 Difference]: Start difference. First operand has 122 places, 108 transitions, 845 flow. Second operand 8 states and 137 transitions. [2024-06-27 18:16:28,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 133 transitions, 1173 flow [2024-06-27 18:16:28,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 133 transitions, 1125 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:28,887 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 834 flow [2024-06-27 18:16:28,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=834, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-06-27 18:16:28,888 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-27 18:16:28,888 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 834 flow [2024-06-27 18:16:28,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:28,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:28,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:28,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:16:28,889 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:28,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:28,889 INFO L85 PathProgramCache]: Analyzing trace with hash 820144133, now seen corresponding path program 1 times [2024-06-27 18:16:28,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:28,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946651810] [2024-06-27 18:16:28,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:28,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:30,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:30,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946651810] [2024-06-27 18:16:30,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946651810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:30,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:30,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:30,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154920440] [2024-06-27 18:16:30,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:30,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:30,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:30,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:30,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:30,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:16:30,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 834 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 18:16:30,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:30,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:16:30,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:30,805 INFO L124 PetriNetUnfolderBase]: 867/1651 cut-off events. [2024-06-27 18:16:30,805 INFO L125 PetriNetUnfolderBase]: For 16551/16557 co-relation queries the response was YES. [2024-06-27 18:16:30,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6733 conditions, 1651 events. 867/1651 cut-off events. For 16551/16557 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9951 event pairs, 246 based on Foata normal form. 8/1610 useless extension candidates. Maximal degree in co-relation 6674. Up to 1314 conditions per place. [2024-06-27 18:16:30,815 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 97 selfloop transitions, 18 changer transitions 0/134 dead transitions. [2024-06-27 18:16:30,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 1134 flow [2024-06-27 18:16:30,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:16:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:16:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-06-27 18:16:30,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039473684210525 [2024-06-27 18:16:30,817 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 834 flow. Second operand 8 states and 143 transitions. [2024-06-27 18:16:30,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 1134 flow [2024-06-27 18:16:30,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 134 transitions, 1086 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:30,841 INFO L231 Difference]: Finished difference. Result has 127 places, 108 transitions, 826 flow [2024-06-27 18:16:30,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=826, PETRI_PLACES=127, PETRI_TRANSITIONS=108} [2024-06-27 18:16:30,842 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2024-06-27 18:16:30,843 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 108 transitions, 826 flow [2024-06-27 18:16:30,843 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 18:16:30,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:30,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:30,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:16:30,843 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:30,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:30,844 INFO L85 PathProgramCache]: Analyzing trace with hash 472372377, now seen corresponding path program 1 times [2024-06-27 18:16:30,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:30,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270651991] [2024-06-27 18:16:30,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:30,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:31,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:31,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270651991] [2024-06-27 18:16:31,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270651991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:31,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:31,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:31,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638923549] [2024-06-27 18:16:31,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:31,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:31,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:31,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:31,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:31,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:31,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 108 transitions, 826 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:31,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:31,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:31,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:32,258 INFO L124 PetriNetUnfolderBase]: 990/1811 cut-off events. [2024-06-27 18:16:32,258 INFO L125 PetriNetUnfolderBase]: For 17195/17195 co-relation queries the response was YES. [2024-06-27 18:16:32,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7412 conditions, 1811 events. 990/1811 cut-off events. For 17195/17195 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10643 event pairs, 220 based on Foata normal form. 1/1751 useless extension candidates. Maximal degree in co-relation 7352. Up to 1516 conditions per place. [2024-06-27 18:16:32,266 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 129 selfloop transitions, 16 changer transitions 0/152 dead transitions. [2024-06-27 18:16:32,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 152 transitions, 1274 flow [2024-06-27 18:16:32,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:32,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:32,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:16:32,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 18:16:32,274 INFO L175 Difference]: Start difference. First operand has 127 places, 108 transitions, 826 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:16:32,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 152 transitions, 1274 flow [2024-06-27 18:16:32,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 152 transitions, 1234 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:32,300 INFO L231 Difference]: Finished difference. Result has 130 places, 110 transitions, 843 flow [2024-06-27 18:16:32,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=843, PETRI_PLACES=130, PETRI_TRANSITIONS=110} [2024-06-27 18:16:32,301 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-27 18:16:32,301 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 110 transitions, 843 flow [2024-06-27 18:16:32,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:32,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:32,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:32,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:16:32,302 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:32,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:32,302 INFO L85 PathProgramCache]: Analyzing trace with hash 472492533, now seen corresponding path program 1 times [2024-06-27 18:16:32,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:32,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029147368] [2024-06-27 18:16:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:32,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:33,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:33,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029147368] [2024-06-27 18:16:33,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029147368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:33,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:33,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:33,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425443387] [2024-06-27 18:16:33,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:33,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:33,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:33,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:33,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:33,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 110 transitions, 843 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:33,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:33,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:33,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:33,723 INFO L124 PetriNetUnfolderBase]: 1052/1885 cut-off events. [2024-06-27 18:16:33,723 INFO L125 PetriNetUnfolderBase]: For 20054/20054 co-relation queries the response was YES. [2024-06-27 18:16:33,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7905 conditions, 1885 events. 1052/1885 cut-off events. For 20054/20054 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 10987 event pairs, 178 based on Foata normal form. 3/1832 useless extension candidates. Maximal degree in co-relation 7844. Up to 1007 conditions per place. [2024-06-27 18:16:33,734 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 109 selfloop transitions, 46 changer transitions 0/162 dead transitions. [2024-06-27 18:16:33,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 162 transitions, 1409 flow [2024-06-27 18:16:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:33,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:33,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 177 transitions. [2024-06-27 18:16:33,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5175438596491229 [2024-06-27 18:16:33,736 INFO L175 Difference]: Start difference. First operand has 130 places, 110 transitions, 843 flow. Second operand 9 states and 177 transitions. [2024-06-27 18:16:33,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 162 transitions, 1409 flow [2024-06-27 18:16:33,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 162 transitions, 1335 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:33,763 INFO L231 Difference]: Finished difference. Result has 130 places, 114 transitions, 902 flow [2024-06-27 18:16:33,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=902, PETRI_PLACES=130, PETRI_TRANSITIONS=114} [2024-06-27 18:16:33,764 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 88 predicate places. [2024-06-27 18:16:33,764 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 114 transitions, 902 flow [2024-06-27 18:16:33,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:33,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:33,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:33,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:16:33,765 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:33,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:33,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1892364987, now seen corresponding path program 2 times [2024-06-27 18:16:33,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:33,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583133484] [2024-06-27 18:16:33,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:33,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:34,515 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 18:16:34,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:34,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583133484] [2024-06-27 18:16:34,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583133484] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:34,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:34,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:34,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006255438] [2024-06-27 18:16:34,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:34,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:34,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:34,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:34,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:34,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 114 transitions, 902 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:34,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:34,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:34,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:35,003 INFO L124 PetriNetUnfolderBase]: 1066/1925 cut-off events. [2024-06-27 18:16:35,004 INFO L125 PetriNetUnfolderBase]: For 20880/20880 co-relation queries the response was YES. [2024-06-27 18:16:35,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8392 conditions, 1925 events. 1066/1925 cut-off events. For 20880/20880 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 11344 event pairs, 232 based on Foata normal form. 1/1864 useless extension candidates. Maximal degree in co-relation 8330. Up to 1495 conditions per place. [2024-06-27 18:16:35,014 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 117 selfloop transitions, 34 changer transitions 0/158 dead transitions. [2024-06-27 18:16:35,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 158 transitions, 1438 flow [2024-06-27 18:16:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:35,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 167 transitions. [2024-06-27 18:16:35,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48830409356725146 [2024-06-27 18:16:35,016 INFO L175 Difference]: Start difference. First operand has 130 places, 114 transitions, 902 flow. Second operand 9 states and 167 transitions. [2024-06-27 18:16:35,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 158 transitions, 1438 flow [2024-06-27 18:16:35,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 158 transitions, 1375 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:35,052 INFO L231 Difference]: Finished difference. Result has 134 places, 118 transitions, 956 flow [2024-06-27 18:16:35,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=956, PETRI_PLACES=134, PETRI_TRANSITIONS=118} [2024-06-27 18:16:35,052 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 92 predicate places. [2024-06-27 18:16:35,053 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 118 transitions, 956 flow [2024-06-27 18:16:35,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:35,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:35,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:35,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:16:35,053 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:35,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:35,054 INFO L85 PathProgramCache]: Analyzing trace with hash 477140673, now seen corresponding path program 2 times [2024-06-27 18:16:35,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:35,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715010947] [2024-06-27 18:16:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:35,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:35,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715010947] [2024-06-27 18:16:35,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715010947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:35,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:35,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:35,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806160969] [2024-06-27 18:16:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:35,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:35,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:35,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:35,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:35,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:35,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 118 transitions, 956 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:35,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:35,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:35,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:36,240 INFO L124 PetriNetUnfolderBase]: 1138/1955 cut-off events. [2024-06-27 18:16:36,240 INFO L125 PetriNetUnfolderBase]: For 24650/24650 co-relation queries the response was YES. [2024-06-27 18:16:36,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8969 conditions, 1955 events. 1138/1955 cut-off events. For 24650/24650 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 10993 event pairs, 185 based on Foata normal form. 3/1923 useless extension candidates. Maximal degree in co-relation 8905. Up to 1081 conditions per place. [2024-06-27 18:16:36,252 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 117 selfloop transitions, 44 changer transitions 0/168 dead transitions. [2024-06-27 18:16:36,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 168 transitions, 1592 flow [2024-06-27 18:16:36,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:16:36,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2024-06-27 18:16:36,253 INFO L175 Difference]: Start difference. First operand has 134 places, 118 transitions, 956 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:16:36,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 168 transitions, 1592 flow [2024-06-27 18:16:36,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 168 transitions, 1539 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:36,289 INFO L231 Difference]: Finished difference. Result has 138 places, 122 transitions, 1028 flow [2024-06-27 18:16:36,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1028, PETRI_PLACES=138, PETRI_TRANSITIONS=122} [2024-06-27 18:16:36,290 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 96 predicate places. [2024-06-27 18:16:36,290 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 122 transitions, 1028 flow [2024-06-27 18:16:36,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:36,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:36,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:36,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:16:36,290 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:36,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1887723357, now seen corresponding path program 3 times [2024-06-27 18:16:36,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:36,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894403103] [2024-06-27 18:16:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:36,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:36,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:36,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894403103] [2024-06-27 18:16:36,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894403103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:36,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:36,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:36,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108524414] [2024-06-27 18:16:36,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:36,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:36,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:36,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:36,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:37,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:37,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 122 transitions, 1028 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:37,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:37,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:37,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:37,435 INFO L124 PetriNetUnfolderBase]: 1149/2083 cut-off events. [2024-06-27 18:16:37,435 INFO L125 PetriNetUnfolderBase]: For 25409/25409 co-relation queries the response was YES. [2024-06-27 18:16:37,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 2083 events. 1149/2083 cut-off events. For 25409/25409 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12522 event pairs, 255 based on Foata normal form. 1/2012 useless extension candidates. Maximal degree in co-relation 9396. Up to 1618 conditions per place. [2024-06-27 18:16:37,446 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 120 selfloop transitions, 34 changer transitions 0/161 dead transitions. [2024-06-27 18:16:37,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 161 transitions, 1544 flow [2024-06-27 18:16:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:16:37,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 18:16:37,449 INFO L175 Difference]: Start difference. First operand has 138 places, 122 transitions, 1028 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:16:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 161 transitions, 1544 flow [2024-06-27 18:16:37,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 161 transitions, 1476 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:37,516 INFO L231 Difference]: Finished difference. Result has 142 places, 124 transitions, 1053 flow [2024-06-27 18:16:37,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1053, PETRI_PLACES=142, PETRI_TRANSITIONS=124} [2024-06-27 18:16:37,517 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2024-06-27 18:16:37,517 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 124 transitions, 1053 flow [2024-06-27 18:16:37,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:37,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:37,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:37,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:16:37,518 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:37,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1887723171, now seen corresponding path program 3 times [2024-06-27 18:16:37,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:37,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659596143] [2024-06-27 18:16:37,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:37,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:38,198 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 18:16:38,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659596143] [2024-06-27 18:16:38,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659596143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:38,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:38,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:38,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003177309] [2024-06-27 18:16:38,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:38,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:38,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:38,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:38,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:38,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:38,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 124 transitions, 1053 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:38,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:38,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:38,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:38,685 INFO L124 PetriNetUnfolderBase]: 1143/2038 cut-off events. [2024-06-27 18:16:38,686 INFO L125 PetriNetUnfolderBase]: For 25987/25987 co-relation queries the response was YES. [2024-06-27 18:16:38,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9226 conditions, 2038 events. 1143/2038 cut-off events. For 25987/25987 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 11986 event pairs, 181 based on Foata normal form. 3/1981 useless extension candidates. Maximal degree in co-relation 9159. Up to 1094 conditions per place. [2024-06-27 18:16:38,697 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 121 selfloop transitions, 43 changer transitions 0/171 dead transitions. [2024-06-27 18:16:38,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 171 transitions, 1611 flow [2024-06-27 18:16:38,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:38,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:38,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-27 18:16:38,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2024-06-27 18:16:38,698 INFO L175 Difference]: Start difference. First operand has 142 places, 124 transitions, 1053 flow. Second operand 9 states and 178 transitions. [2024-06-27 18:16:38,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 171 transitions, 1611 flow [2024-06-27 18:16:38,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 171 transitions, 1545 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:38,736 INFO L231 Difference]: Finished difference. Result has 145 places, 124 transitions, 1078 flow [2024-06-27 18:16:38,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=987, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=145, PETRI_TRANSITIONS=124} [2024-06-27 18:16:38,737 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 103 predicate places. [2024-06-27 18:16:38,737 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 124 transitions, 1078 flow [2024-06-27 18:16:38,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:38,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:38,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:38,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:16:38,738 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:38,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:38,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1714996131, now seen corresponding path program 4 times [2024-06-27 18:16:38,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:38,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512948728] [2024-06-27 18:16:38,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:38,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:39,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:39,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:39,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512948728] [2024-06-27 18:16:39,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512948728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:39,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:39,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:39,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735966013] [2024-06-27 18:16:39,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:39,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:39,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:39,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:39,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:39,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:39,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 124 transitions, 1078 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:39,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:39,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:39,945 INFO L124 PetriNetUnfolderBase]: 1215/2105 cut-off events. [2024-06-27 18:16:39,946 INFO L125 PetriNetUnfolderBase]: For 30226/30226 co-relation queries the response was YES. [2024-06-27 18:16:39,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 2105 events. 1215/2105 cut-off events. For 30226/30226 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 12074 event pairs, 245 based on Foata normal form. 3/2065 useless extension candidates. Maximal degree in co-relation 9888. Up to 1146 conditions per place. [2024-06-27 18:16:39,959 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 117 selfloop transitions, 47 changer transitions 0/171 dead transitions. [2024-06-27 18:16:39,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 171 transitions, 1734 flow [2024-06-27 18:16:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 174 transitions. [2024-06-27 18:16:39,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087719298245614 [2024-06-27 18:16:39,960 INFO L175 Difference]: Start difference. First operand has 145 places, 124 transitions, 1078 flow. Second operand 9 states and 174 transitions. [2024-06-27 18:16:39,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 171 transitions, 1734 flow [2024-06-27 18:16:40,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 171 transitions, 1634 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:40,013 INFO L231 Difference]: Finished difference. Result has 146 places, 128 transitions, 1121 flow [2024-06-27 18:16:40,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=986, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1121, PETRI_PLACES=146, PETRI_TRANSITIONS=128} [2024-06-27 18:16:40,013 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2024-06-27 18:16:40,014 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 128 transitions, 1121 flow [2024-06-27 18:16:40,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:40,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:40,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:40,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:16:40,014 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:40,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:40,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1715233467, now seen corresponding path program 4 times [2024-06-27 18:16:40,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:40,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015941909] [2024-06-27 18:16:40,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:40,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:40,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:40,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015941909] [2024-06-27 18:16:40,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015941909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:40,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:40,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:40,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061182690] [2024-06-27 18:16:40,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:40,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:40,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:40,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:40,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 128 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:40,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:40,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:40,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:41,197 INFO L124 PetriNetUnfolderBase]: 1226/2215 cut-off events. [2024-06-27 18:16:41,197 INFO L125 PetriNetUnfolderBase]: For 30275/30275 co-relation queries the response was YES. [2024-06-27 18:16:41,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10161 conditions, 2215 events. 1226/2215 cut-off events. For 30275/30275 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13383 event pairs, 293 based on Foata normal form. 1/2142 useless extension candidates. Maximal degree in co-relation 10092. Up to 1732 conditions per place. [2024-06-27 18:16:41,209 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 122 selfloop transitions, 35 changer transitions 0/164 dead transitions. [2024-06-27 18:16:41,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 164 transitions, 1641 flow [2024-06-27 18:16:41,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:41,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:41,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:16:41,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 18:16:41,211 INFO L175 Difference]: Start difference. First operand has 146 places, 128 transitions, 1121 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:16:41,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 164 transitions, 1641 flow [2024-06-27 18:16:41,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 164 transitions, 1574 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:41,257 INFO L231 Difference]: Finished difference. Result has 150 places, 130 transitions, 1151 flow [2024-06-27 18:16:41,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1054, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1151, PETRI_PLACES=150, PETRI_TRANSITIONS=130} [2024-06-27 18:16:41,258 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2024-06-27 18:16:41,258 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 130 transitions, 1151 flow [2024-06-27 18:16:41,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:41,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:41,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:41,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:16:41,258 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:41,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:41,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1715226771, now seen corresponding path program 5 times [2024-06-27 18:16:41,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:41,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531436618] [2024-06-27 18:16:41,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:41,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:42,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:42,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531436618] [2024-06-27 18:16:42,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531436618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:42,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:42,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:42,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397288243] [2024-06-27 18:16:42,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:42,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:42,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:42,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:42,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:42,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:42,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 130 transitions, 1151 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:42,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:42,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:42,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:42,608 INFO L124 PetriNetUnfolderBase]: 1259/2176 cut-off events. [2024-06-27 18:16:42,608 INFO L125 PetriNetUnfolderBase]: For 33082/33082 co-relation queries the response was YES. [2024-06-27 18:16:42,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10104 conditions, 2176 events. 1259/2176 cut-off events. For 33082/33082 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12537 event pairs, 245 based on Foata normal form. 3/2135 useless extension candidates. Maximal degree in co-relation 10034. Up to 1187 conditions per place. [2024-06-27 18:16:42,621 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 124 selfloop transitions, 46 changer transitions 0/177 dead transitions. [2024-06-27 18:16:42,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 177 transitions, 1807 flow [2024-06-27 18:16:42,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:42,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:42,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 178 transitions. [2024-06-27 18:16:42,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52046783625731 [2024-06-27 18:16:42,623 INFO L175 Difference]: Start difference. First operand has 150 places, 130 transitions, 1151 flow. Second operand 9 states and 178 transitions. [2024-06-27 18:16:42,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 177 transitions, 1807 flow [2024-06-27 18:16:42,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 177 transitions, 1741 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 18:16:42,682 INFO L231 Difference]: Finished difference. Result has 153 places, 132 transitions, 1198 flow [2024-06-27 18:16:42,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1198, PETRI_PLACES=153, PETRI_TRANSITIONS=132} [2024-06-27 18:16:42,682 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 111 predicate places. [2024-06-27 18:16:42,682 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 132 transitions, 1198 flow [2024-06-27 18:16:42,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:42,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:42,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:42,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:16:42,683 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:42,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:42,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1715233281, now seen corresponding path program 6 times [2024-06-27 18:16:42,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:42,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035397648] [2024-06-27 18:16:42,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:42,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:43,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:43,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:43,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035397648] [2024-06-27 18:16:43,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035397648] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:43,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:43,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:43,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321203057] [2024-06-27 18:16:43,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:43,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:43,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:43,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:43,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:43,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:43,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 132 transitions, 1198 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:43,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:43,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:43,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:43,807 INFO L124 PetriNetUnfolderBase]: 1253/2167 cut-off events. [2024-06-27 18:16:43,808 INFO L125 PetriNetUnfolderBase]: For 33309/33309 co-relation queries the response was YES. [2024-06-27 18:16:43,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10182 conditions, 2167 events. 1253/2167 cut-off events. For 33309/33309 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12467 event pairs, 243 based on Foata normal form. 3/2126 useless extension candidates. Maximal degree in co-relation 10111. Up to 1183 conditions per place. [2024-06-27 18:16:43,821 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 122 selfloop transitions, 47 changer transitions 0/176 dead transitions. [2024-06-27 18:16:43,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 176 transitions, 1764 flow [2024-06-27 18:16:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:43,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-06-27 18:16:43,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5146198830409356 [2024-06-27 18:16:43,822 INFO L175 Difference]: Start difference. First operand has 153 places, 132 transitions, 1198 flow. Second operand 9 states and 176 transitions. [2024-06-27 18:16:43,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 176 transitions, 1764 flow [2024-06-27 18:16:43,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 176 transitions, 1657 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:43,878 INFO L231 Difference]: Finished difference. Result has 155 places, 132 transitions, 1190 flow [2024-06-27 18:16:43,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1091, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1190, PETRI_PLACES=155, PETRI_TRANSITIONS=132} [2024-06-27 18:16:43,879 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2024-06-27 18:16:43,879 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 132 transitions, 1190 flow [2024-06-27 18:16:43,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:43,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:43,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:43,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:16:43,880 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:43,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:43,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1355943689, now seen corresponding path program 7 times [2024-06-27 18:16:43,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:43,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519127742] [2024-06-27 18:16:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:43,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:44,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519127742] [2024-06-27 18:16:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519127742] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:44,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:44,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:44,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357071343] [2024-06-27 18:16:44,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:44,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:44,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:44,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:44,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:44,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:44,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 132 transitions, 1190 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:44,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:44,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:44,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:45,129 INFO L124 PetriNetUnfolderBase]: 1286/2323 cut-off events. [2024-06-27 18:16:45,129 INFO L125 PetriNetUnfolderBase]: For 34961/34961 co-relation queries the response was YES. [2024-06-27 18:16:45,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10571 conditions, 2323 events. 1286/2323 cut-off events. For 34961/34961 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 14173 event pairs, 373 based on Foata normal form. 3/2258 useless extension candidates. Maximal degree in co-relation 10499. Up to 1916 conditions per place. [2024-06-27 18:16:45,144 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 141 selfloop transitions, 18 changer transitions 0/166 dead transitions. [2024-06-27 18:16:45,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 166 transitions, 1634 flow [2024-06-27 18:16:45,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:16:45,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-06-27 18:16:45,145 INFO L175 Difference]: Start difference. First operand has 155 places, 132 transitions, 1190 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:16:45,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 166 transitions, 1634 flow [2024-06-27 18:16:45,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 166 transitions, 1533 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:45,202 INFO L231 Difference]: Finished difference. Result has 156 places, 134 transitions, 1158 flow [2024-06-27 18:16:45,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1158, PETRI_PLACES=156, PETRI_TRANSITIONS=134} [2024-06-27 18:16:45,202 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-27 18:16:45,203 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 134 transitions, 1158 flow [2024-06-27 18:16:45,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:45,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:45,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:45,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:16:45,203 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:45,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:45,203 INFO L85 PathProgramCache]: Analyzing trace with hash -345733497, now seen corresponding path program 1 times [2024-06-27 18:16:45,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:45,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061859725] [2024-06-27 18:16:45,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:45,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:46,128 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 18:16:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:46,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061859725] [2024-06-27 18:16:46,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061859725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:46,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:46,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:16:46,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643546814] [2024-06-27 18:16:46,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:46,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:16:46,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:46,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:16:46,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:16:46,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:46,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 134 transitions, 1158 flow. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:46,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:46,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:46,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:46,626 INFO L124 PetriNetUnfolderBase]: 1300/2303 cut-off events. [2024-06-27 18:16:46,626 INFO L125 PetriNetUnfolderBase]: For 34442/34442 co-relation queries the response was YES. [2024-06-27 18:16:46,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10369 conditions, 2303 events. 1300/2303 cut-off events. For 34442/34442 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13745 event pairs, 380 based on Foata normal form. 2/2248 useless extension candidates. Maximal degree in co-relation 10296. Up to 2019 conditions per place. [2024-06-27 18:16:46,640 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 136 selfloop transitions, 22 changer transitions 0/165 dead transitions. [2024-06-27 18:16:46,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 165 transitions, 1584 flow [2024-06-27 18:16:46,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:16:46,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43567251461988304 [2024-06-27 18:16:46,641 INFO L175 Difference]: Start difference. First operand has 156 places, 134 transitions, 1158 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:16:46,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 165 transitions, 1584 flow [2024-06-27 18:16:46,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 165 transitions, 1545 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:46,709 INFO L231 Difference]: Finished difference. Result has 160 places, 143 transitions, 1257 flow [2024-06-27 18:16:46,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1257, PETRI_PLACES=160, PETRI_TRANSITIONS=143} [2024-06-27 18:16:46,709 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-27 18:16:46,709 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 143 transitions, 1257 flow [2024-06-27 18:16:46,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 9 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:46,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:46,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:46,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:16:46,710 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:46,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:46,710 INFO L85 PathProgramCache]: Analyzing trace with hash -669560675, now seen corresponding path program 8 times [2024-06-27 18:16:46,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:46,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801914314] [2024-06-27 18:16:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:46,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:46,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:47,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:47,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801914314] [2024-06-27 18:16:47,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801914314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:47,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:47,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:47,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851648638] [2024-06-27 18:16:47,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:47,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:47,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:47,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 143 transitions, 1257 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:47,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:47,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:47,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:47,886 INFO L124 PetriNetUnfolderBase]: 1333/2358 cut-off events. [2024-06-27 18:16:47,886 INFO L125 PetriNetUnfolderBase]: For 37830/37830 co-relation queries the response was YES. [2024-06-27 18:16:47,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10977 conditions, 2358 events. 1333/2358 cut-off events. For 37830/37830 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 14115 event pairs, 340 based on Foata normal form. 3/2303 useless extension candidates. Maximal degree in co-relation 10901. Up to 1745 conditions per place. [2024-06-27 18:16:47,902 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 147 selfloop transitions, 28 changer transitions 0/182 dead transitions. [2024-06-27 18:16:47,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 182 transitions, 1851 flow [2024-06-27 18:16:47,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:47,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:16:47,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2024-06-27 18:16:47,904 INFO L175 Difference]: Start difference. First operand has 160 places, 143 transitions, 1257 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:16:47,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 182 transitions, 1851 flow [2024-06-27 18:16:47,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 182 transitions, 1804 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-27 18:16:47,982 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1295 flow [2024-06-27 18:16:47,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1210, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1295, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-27 18:16:47,983 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 124 predicate places. [2024-06-27 18:16:47,983 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1295 flow [2024-06-27 18:16:47,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:47,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:47,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:47,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:16:47,984 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:47,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:47,985 INFO L85 PathProgramCache]: Analyzing trace with hash -669797825, now seen corresponding path program 9 times [2024-06-27 18:16:47,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:47,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918190491] [2024-06-27 18:16:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:47,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:47,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:48,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:48,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:48,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918190491] [2024-06-27 18:16:48,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918190491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:48,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:48,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:48,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116778942] [2024-06-27 18:16:48,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:48,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:48,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:48,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:48,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:48,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:48,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1295 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:48,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:48,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:48,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:49,278 INFO L124 PetriNetUnfolderBase]: 1366/2415 cut-off events. [2024-06-27 18:16:49,278 INFO L125 PetriNetUnfolderBase]: For 40075/40075 co-relation queries the response was YES. [2024-06-27 18:16:49,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11417 conditions, 2415 events. 1366/2415 cut-off events. For 40075/40075 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14602 event pairs, 301 based on Foata normal form. 3/2356 useless extension candidates. Maximal degree in co-relation 11338. Up to 1769 conditions per place. [2024-06-27 18:16:49,293 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 144 selfloop transitions, 33 changer transitions 0/184 dead transitions. [2024-06-27 18:16:49,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 184 transitions, 1899 flow [2024-06-27 18:16:49,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:16:49,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 18:16:49,297 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1295 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:16:49,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 184 transitions, 1899 flow [2024-06-27 18:16:49,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 184 transitions, 1812 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 18:16:49,372 INFO L231 Difference]: Finished difference. Result has 168 places, 147 transitions, 1307 flow [2024-06-27 18:16:49,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1307, PETRI_PLACES=168, PETRI_TRANSITIONS=147} [2024-06-27 18:16:49,372 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-27 18:16:49,372 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 147 transitions, 1307 flow [2024-06-27 18:16:49,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:49,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:49,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:49,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:16:49,373 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:49,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:49,374 INFO L85 PathProgramCache]: Analyzing trace with hash 785639883, now seen corresponding path program 5 times [2024-06-27 18:16:49,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:49,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868805242] [2024-06-27 18:16:49,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:49,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:50,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:50,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:50,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868805242] [2024-06-27 18:16:50,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868805242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:50,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:50,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:50,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778837964] [2024-06-27 18:16:50,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:50,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:50,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:50,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:50,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:50,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:50,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 147 transitions, 1307 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:50,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:50,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:50,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:50,529 INFO L124 PetriNetUnfolderBase]: 1364/2405 cut-off events. [2024-06-27 18:16:50,529 INFO L125 PetriNetUnfolderBase]: For 38207/38207 co-relation queries the response was YES. [2024-06-27 18:16:50,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11346 conditions, 2405 events. 1364/2405 cut-off events. For 38207/38207 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14404 event pairs, 396 based on Foata normal form. 1/2348 useless extension candidates. Maximal degree in co-relation 11266. Up to 2122 conditions per place. [2024-06-27 18:16:50,540 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 151 selfloop transitions, 17 changer transitions 0/175 dead transitions. [2024-06-27 18:16:50,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 175 transitions, 1741 flow [2024-06-27 18:16:50,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:50,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:50,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-06-27 18:16:50,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43859649122807015 [2024-06-27 18:16:50,542 INFO L175 Difference]: Start difference. First operand has 168 places, 147 transitions, 1307 flow. Second operand 9 states and 150 transitions. [2024-06-27 18:16:50,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 175 transitions, 1741 flow [2024-06-27 18:16:50,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 175 transitions, 1615 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:50,618 INFO L231 Difference]: Finished difference. Result has 169 places, 147 transitions, 1220 flow [2024-06-27 18:16:50,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1220, PETRI_PLACES=169, PETRI_TRANSITIONS=147} [2024-06-27 18:16:50,618 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-06-27 18:16:50,618 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 147 transitions, 1220 flow [2024-06-27 18:16:50,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:50,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:50,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:50,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:16:50,619 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:50,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:50,620 INFO L85 PathProgramCache]: Analyzing trace with hash -721503045, now seen corresponding path program 10 times [2024-06-27 18:16:50,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:50,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628080912] [2024-06-27 18:16:50,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:50,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:51,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:51,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628080912] [2024-06-27 18:16:51,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628080912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:51,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:51,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:16:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230651176] [2024-06-27 18:16:51,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:51,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:16:51,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:16:51,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:16:51,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:51,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 147 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:51,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:51,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:51,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:51,814 INFO L124 PetriNetUnfolderBase]: 1358/2415 cut-off events. [2024-06-27 18:16:51,814 INFO L125 PetriNetUnfolderBase]: For 37632/37632 co-relation queries the response was YES. [2024-06-27 18:16:51,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10860 conditions, 2415 events. 1358/2415 cut-off events. For 37632/37632 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 14685 event pairs, 305 based on Foata normal form. 3/2352 useless extension candidates. Maximal degree in co-relation 10779. Up to 1762 conditions per place. [2024-06-27 18:16:51,829 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 145 selfloop transitions, 31 changer transitions 0/183 dead transitions. [2024-06-27 18:16:51,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 183 transitions, 1710 flow [2024-06-27 18:16:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:16:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:16:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 163 transitions. [2024-06-27 18:16:51,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4766081871345029 [2024-06-27 18:16:51,831 INFO L175 Difference]: Start difference. First operand has 169 places, 147 transitions, 1220 flow. Second operand 9 states and 163 transitions. [2024-06-27 18:16:51,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 183 transitions, 1710 flow [2024-06-27 18:16:51,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 183 transitions, 1623 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 18:16:51,912 INFO L231 Difference]: Finished difference. Result has 168 places, 147 transitions, 1200 flow [2024-06-27 18:16:51,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1200, PETRI_PLACES=168, PETRI_TRANSITIONS=147} [2024-06-27 18:16:51,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 126 predicate places. [2024-06-27 18:16:51,913 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 147 transitions, 1200 flow [2024-06-27 18:16:51,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.3) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:51,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:51,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:51,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:16:51,914 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:51,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:51,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1005938763, now seen corresponding path program 1 times [2024-06-27 18:16:51,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:51,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407683538] [2024-06-27 18:16:51,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:51,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:51,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:51,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407683538] [2024-06-27 18:16:51,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407683538] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:51,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:51,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:16:51,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805004767] [2024-06-27 18:16:51,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:51,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:16:51,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:51,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:16:51,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:16:51,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-06-27 18:16:51,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 147 transitions, 1200 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:51,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:51,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-06-27 18:16:51,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:52,172 INFO L124 PetriNetUnfolderBase]: 397/869 cut-off events. [2024-06-27 18:16:52,172 INFO L125 PetriNetUnfolderBase]: For 22015/22043 co-relation queries the response was YES. [2024-06-27 18:16:52,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 869 events. 397/869 cut-off events. For 22015/22043 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4899 event pairs, 96 based on Foata normal form. 68/864 useless extension candidates. Maximal degree in co-relation 3854. Up to 237 conditions per place. [2024-06-27 18:16:52,179 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 47 selfloop transitions, 28 changer transitions 0/144 dead transitions. [2024-06-27 18:16:52,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 144 transitions, 1280 flow [2024-06-27 18:16:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:16:52,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:16:52,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2024-06-27 18:16:52,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7039473684210527 [2024-06-27 18:16:52,181 INFO L175 Difference]: Start difference. First operand has 168 places, 147 transitions, 1200 flow. Second operand 4 states and 107 transitions. [2024-06-27 18:16:52,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 144 transitions, 1280 flow [2024-06-27 18:16:52,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 1085 flow, removed 23 selfloop flow, removed 26 redundant places. [2024-06-27 18:16:52,222 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 985 flow [2024-06-27 18:16:52,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=985, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2024-06-27 18:16:52,222 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 105 predicate places. [2024-06-27 18:16:52,222 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 985 flow [2024-06-27 18:16:52,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:16:52,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:52,222 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:52,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:16:52,223 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:52,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:52,223 INFO L85 PathProgramCache]: Analyzing trace with hash 323121325, now seen corresponding path program 1 times [2024-06-27 18:16:52,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:52,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369950133] [2024-06-27 18:16:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:52,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:53,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:53,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:53,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369950133] [2024-06-27 18:16:53,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369950133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:53,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:53,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:16:53,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117168404] [2024-06-27 18:16:53,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:53,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:16:53,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:53,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:16:53,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:16:53,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:53,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 985 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 18:16:53,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:53,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:53,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:53,702 INFO L124 PetriNetUnfolderBase]: 798/1427 cut-off events. [2024-06-27 18:16:53,703 INFO L125 PetriNetUnfolderBase]: For 33909/33909 co-relation queries the response was YES. [2024-06-27 18:16:53,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6769 conditions, 1427 events. 798/1427 cut-off events. For 33909/33909 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6984 event pairs, 185 based on Foata normal form. 1/1364 useless extension candidates. Maximal degree in co-relation 6697. Up to 1268 conditions per place. [2024-06-27 18:16:53,710 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 134 selfloop transitions, 17 changer transitions 0/159 dead transitions. [2024-06-27 18:16:53,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 159 transitions, 1383 flow [2024-06-27 18:16:53,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:53,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:16:53,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-27 18:16:53,711 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 985 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:16:53,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 159 transitions, 1383 flow [2024-06-27 18:16:53,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 159 transitions, 1381 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:16:53,781 INFO L231 Difference]: Finished difference. Result has 156 places, 131 transitions, 1048 flow [2024-06-27 18:16:53,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=983, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1048, PETRI_PLACES=156, PETRI_TRANSITIONS=131} [2024-06-27 18:16:53,782 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 114 predicate places. [2024-06-27 18:16:53,782 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 131 transitions, 1048 flow [2024-06-27 18:16:53,782 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 18:16:53,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:53,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:53,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:16:53,783 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:53,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:53,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1462419331, now seen corresponding path program 2 times [2024-06-27 18:16:53,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:53,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440274516] [2024-06-27 18:16:53,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:53,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:54,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:54,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:54,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440274516] [2024-06-27 18:16:54,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440274516] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:54,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:54,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:16:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653064317] [2024-06-27 18:16:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:54,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:16:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:54,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:16:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:16:54,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:54,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 131 transitions, 1048 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 18:16:54,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:54,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:54,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:55,272 INFO L124 PetriNetUnfolderBase]: 804/1436 cut-off events. [2024-06-27 18:16:55,272 INFO L125 PetriNetUnfolderBase]: For 35507/35507 co-relation queries the response was YES. [2024-06-27 18:16:55,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6957 conditions, 1436 events. 804/1436 cut-off events. For 35507/35507 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7045 event pairs, 184 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 6882. Up to 1261 conditions per place. [2024-06-27 18:16:55,280 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 137 selfloop transitions, 21 changer transitions 0/166 dead transitions. [2024-06-27 18:16:55,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 166 transitions, 1478 flow [2024-06-27 18:16:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:16:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:16:55,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:16:55,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-27 18:16:55,283 INFO L175 Difference]: Start difference. First operand has 156 places, 131 transitions, 1048 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:16:55,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 166 transitions, 1478 flow [2024-06-27 18:16:55,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 166 transitions, 1433 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:55,358 INFO L231 Difference]: Finished difference. Result has 159 places, 133 transitions, 1083 flow [2024-06-27 18:16:55,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1003, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1083, PETRI_PLACES=159, PETRI_TRANSITIONS=133} [2024-06-27 18:16:55,358 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 117 predicate places. [2024-06-27 18:16:55,358 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 133 transitions, 1083 flow [2024-06-27 18:16:55,359 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 18:16:55,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:55,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:55,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:16:55,359 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:55,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1462509696, now seen corresponding path program 1 times [2024-06-27 18:16:55,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:55,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774908811] [2024-06-27 18:16:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:55,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:56,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:56,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774908811] [2024-06-27 18:16:56,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774908811] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:56,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:56,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:16:56,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534853806] [2024-06-27 18:16:56,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:56,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:16:56,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:56,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:16:56,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:16:56,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:56,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 133 transitions, 1083 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 18:16:56,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:56,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:56,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:56,548 INFO L124 PetriNetUnfolderBase]: 820/1461 cut-off events. [2024-06-27 18:16:56,548 INFO L125 PetriNetUnfolderBase]: For 39212/39212 co-relation queries the response was YES. [2024-06-27 18:16:56,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7157 conditions, 1461 events. 820/1461 cut-off events. For 39212/39212 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7204 event pairs, 189 based on Foata normal form. 3/1398 useless extension candidates. Maximal degree in co-relation 7081. Up to 1292 conditions per place. [2024-06-27 18:16:56,554 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 140 selfloop transitions, 17 changer transitions 0/165 dead transitions. [2024-06-27 18:16:56,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 165 transitions, 1505 flow [2024-06-27 18:16:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:16:56,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2024-06-27 18:16:56,555 INFO L175 Difference]: Start difference. First operand has 159 places, 133 transitions, 1083 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:16:56,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 165 transitions, 1505 flow [2024-06-27 18:16:56,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 165 transitions, 1449 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 18:16:56,648 INFO L231 Difference]: Finished difference. Result has 160 places, 135 transitions, 1096 flow [2024-06-27 18:16:56,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1096, PETRI_PLACES=160, PETRI_TRANSITIONS=135} [2024-06-27 18:16:56,649 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 118 predicate places. [2024-06-27 18:16:56,649 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 135 transitions, 1096 flow [2024-06-27 18:16:56,650 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 18:16:56,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:56,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:56,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:16:56,650 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:56,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1762367668, now seen corresponding path program 2 times [2024-06-27 18:16:56,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:56,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109478479] [2024-06-27 18:16:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:56,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:57,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:57,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:57,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109478479] [2024-06-27 18:16:57,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109478479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:57,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:57,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:16:57,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189341677] [2024-06-27 18:16:57,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:57,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:16:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:16:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:16:57,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:57,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 135 transitions, 1096 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 18:16:57,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:57,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:57,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:57,881 INFO L124 PetriNetUnfolderBase]: 873/1544 cut-off events. [2024-06-27 18:16:57,881 INFO L125 PetriNetUnfolderBase]: For 45283/45283 co-relation queries the response was YES. [2024-06-27 18:16:57,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7808 conditions, 1544 events. 873/1544 cut-off events. For 45283/45283 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7687 event pairs, 143 based on Foata normal form. 3/1478 useless extension candidates. Maximal degree in co-relation 7731. Up to 812 conditions per place. [2024-06-27 18:16:57,888 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 108 selfloop transitions, 62 changer transitions 0/178 dead transitions. [2024-06-27 18:16:57,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 178 transitions, 1818 flow [2024-06-27 18:16:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:57,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:16:57,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 18:16:57,890 INFO L175 Difference]: Start difference. First operand has 160 places, 135 transitions, 1096 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:16:57,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 178 transitions, 1818 flow [2024-06-27 18:16:57,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 178 transitions, 1769 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:16:57,968 INFO L231 Difference]: Finished difference. Result has 162 places, 141 transitions, 1270 flow [2024-06-27 18:16:57,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1047, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1270, PETRI_PLACES=162, PETRI_TRANSITIONS=141} [2024-06-27 18:16:57,969 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2024-06-27 18:16:57,969 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 141 transitions, 1270 flow [2024-06-27 18:16:57,969 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 18:16:57,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:57,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:57,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:16:57,969 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:57,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:57,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1466228611, now seen corresponding path program 3 times [2024-06-27 18:16:57,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:57,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318881193] [2024-06-27 18:16:57,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:57,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:16:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:16:58,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:16:58,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318881193] [2024-06-27 18:16:58,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318881193] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:16:58,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:16:58,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:16:58,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058045562] [2024-06-27 18:16:58,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:16:58,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:16:58,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:16:58,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:16:58,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:16:58,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:16:58,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 141 transitions, 1270 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 18:16:58,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:16:58,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:16:58,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:16:59,241 INFO L124 PetriNetUnfolderBase]: 879/1553 cut-off events. [2024-06-27 18:16:59,242 INFO L125 PetriNetUnfolderBase]: For 45712/45712 co-relation queries the response was YES. [2024-06-27 18:16:59,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8150 conditions, 1553 events. 879/1553 cut-off events. For 45712/45712 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 7717 event pairs, 201 based on Foata normal form. 1/1484 useless extension candidates. Maximal degree in co-relation 8072. Up to 1323 conditions per place. [2024-06-27 18:16:59,249 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 122 selfloop transitions, 38 changer transitions 0/168 dead transitions. [2024-06-27 18:16:59,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 168 transitions, 1680 flow [2024-06-27 18:16:59,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:16:59,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:16:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:16:59,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-27 18:16:59,250 INFO L175 Difference]: Start difference. First operand has 162 places, 141 transitions, 1270 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:16:59,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 168 transitions, 1680 flow [2024-06-27 18:16:59,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 168 transitions, 1598 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 18:16:59,339 INFO L231 Difference]: Finished difference. Result has 167 places, 143 transitions, 1299 flow [2024-06-27 18:16:59,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1299, PETRI_PLACES=167, PETRI_TRANSITIONS=143} [2024-06-27 18:16:59,340 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 125 predicate places. [2024-06-27 18:16:59,340 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 143 transitions, 1299 flow [2024-06-27 18:16:59,341 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 18:16:59,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:16:59,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:16:59,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:16:59,341 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:16:59,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:16:59,342 INFO L85 PathProgramCache]: Analyzing trace with hash -2027363324, now seen corresponding path program 3 times [2024-06-27 18:16:59,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:16:59,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661148364] [2024-06-27 18:16:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:16:59,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:16:59,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:00,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:00,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661148364] [2024-06-27 18:17:00,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661148364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:00,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:00,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:00,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772118110] [2024-06-27 18:17:00,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:00,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:00,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:00,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:00,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:00,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:00,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 143 transitions, 1299 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 18:17:00,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:00,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:00,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:00,570 INFO L124 PetriNetUnfolderBase]: 873/1544 cut-off events. [2024-06-27 18:17:00,570 INFO L125 PetriNetUnfolderBase]: For 45928/45928 co-relation queries the response was YES. [2024-06-27 18:17:00,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8017 conditions, 1544 events. 873/1544 cut-off events. For 45928/45928 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 7719 event pairs, 133 based on Foata normal form. 3/1477 useless extension candidates. Maximal degree in co-relation 7937. Up to 817 conditions per place. [2024-06-27 18:17:00,579 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 112 selfloop transitions, 61 changer transitions 0/181 dead transitions. [2024-06-27 18:17:00,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 181 transitions, 1855 flow [2024-06-27 18:17:00,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:00,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:00,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:17:00,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 18:17:00,580 INFO L175 Difference]: Start difference. First operand has 167 places, 143 transitions, 1299 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:17:00,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 181 transitions, 1855 flow [2024-06-27 18:17:00,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 181 transitions, 1754 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:00,688 INFO L231 Difference]: Finished difference. Result has 169 places, 143 transitions, 1325 flow [2024-06-27 18:17:00,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1198, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1325, PETRI_PLACES=169, PETRI_TRANSITIONS=143} [2024-06-27 18:17:00,688 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 127 predicate places. [2024-06-27 18:17:00,688 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 143 transitions, 1325 flow [2024-06-27 18:17:00,688 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 18:17:00,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:00,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:00,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:17:00,689 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:00,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:00,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1610326686, now seen corresponding path program 4 times [2024-06-27 18:17:00,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:00,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146389882] [2024-06-27 18:17:00,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:00,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:01,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:01,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146389882] [2024-06-27 18:17:01,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146389882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:01,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:01,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:01,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400278961] [2024-06-27 18:17:01,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:01,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:01,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:01,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:01,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:01,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:01,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 143 transitions, 1325 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 18:17:01,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:01,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:01,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:01,879 INFO L124 PetriNetUnfolderBase]: 911/1603 cut-off events. [2024-06-27 18:17:01,879 INFO L125 PetriNetUnfolderBase]: For 52033/52033 co-relation queries the response was YES. [2024-06-27 18:17:01,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8674 conditions, 1603 events. 911/1603 cut-off events. For 52033/52033 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 8037 event pairs, 167 based on Foata normal form. 3/1534 useless extension candidates. Maximal degree in co-relation 8593. Up to 847 conditions per place. [2024-06-27 18:17:01,888 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 112 selfloop transitions, 61 changer transitions 0/181 dead transitions. [2024-06-27 18:17:01,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 181 transitions, 2033 flow [2024-06-27 18:17:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:01,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:17:01,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46578947368421053 [2024-06-27 18:17:01,889 INFO L175 Difference]: Start difference. First operand has 169 places, 143 transitions, 1325 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:17:01,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 181 transitions, 2033 flow [2024-06-27 18:17:01,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 181 transitions, 1891 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:01,977 INFO L231 Difference]: Finished difference. Result has 170 places, 147 transitions, 1378 flow [2024-06-27 18:17:01,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1378, PETRI_PLACES=170, PETRI_TRANSITIONS=147} [2024-06-27 18:17:01,977 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2024-06-27 18:17:01,977 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 147 transitions, 1378 flow [2024-06-27 18:17:01,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 11 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:01,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:01,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:01,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:17:01,978 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:01,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:01,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1610124876, now seen corresponding path program 5 times [2024-06-27 18:17:01,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:01,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306281944] [2024-06-27 18:17:01,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:01,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:02,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:02,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:02,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306281944] [2024-06-27 18:17:02,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306281944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:02,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:02,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:02,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677270504] [2024-06-27 18:17:02,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:02,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:02,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:02,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:02,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:02,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:02,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 147 transitions, 1378 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 18:17:02,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:02,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:02,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:03,196 INFO L124 PetriNetUnfolderBase]: 927/1628 cut-off events. [2024-06-27 18:17:03,196 INFO L125 PetriNetUnfolderBase]: For 54148/54148 co-relation queries the response was YES. [2024-06-27 18:17:03,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8803 conditions, 1628 events. 927/1628 cut-off events. For 54148/54148 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8196 event pairs, 161 based on Foata normal form. 3/1558 useless extension candidates. Maximal degree in co-relation 8721. Up to 860 conditions per place. [2024-06-27 18:17:03,210 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 117 selfloop transitions, 60 changer transitions 0/185 dead transitions. [2024-06-27 18:17:03,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 185 transitions, 2072 flow [2024-06-27 18:17:03,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:03,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:03,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:17:03,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 18:17:03,211 INFO L175 Difference]: Start difference. First operand has 170 places, 147 transitions, 1378 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:17:03,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 185 transitions, 2072 flow [2024-06-27 18:17:03,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 185 transitions, 1973 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:03,348 INFO L231 Difference]: Finished difference. Result has 174 places, 149 transitions, 1438 flow [2024-06-27 18:17:03,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1438, PETRI_PLACES=174, PETRI_TRANSITIONS=149} [2024-06-27 18:17:03,349 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 132 predicate places. [2024-06-27 18:17:03,349 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 149 transitions, 1438 flow [2024-06-27 18:17:03,349 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 18:17:03,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:03,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:03,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:17:03,349 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:03,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1610119296, now seen corresponding path program 6 times [2024-06-27 18:17:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:03,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138076384] [2024-06-27 18:17:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:03,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:04,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:04,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138076384] [2024-06-27 18:17:04,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138076384] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:04,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:04,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:04,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820018949] [2024-06-27 18:17:04,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:04,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:04,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:04,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:04,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:04,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 149 transitions, 1438 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 18:17:04,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:04,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:04,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:04,461 INFO L124 PetriNetUnfolderBase]: 921/1619 cut-off events. [2024-06-27 18:17:04,461 INFO L125 PetriNetUnfolderBase]: For 52625/52625 co-relation queries the response was YES. [2024-06-27 18:17:04,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8637 conditions, 1619 events. 921/1619 cut-off events. For 52625/52625 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8133 event pairs, 159 based on Foata normal form. 3/1549 useless extension candidates. Maximal degree in co-relation 8554. Up to 856 conditions per place. [2024-06-27 18:17:04,470 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 115 selfloop transitions, 61 changer transitions 0/184 dead transitions. [2024-06-27 18:17:04,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 184 transitions, 1996 flow [2024-06-27 18:17:04,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:04,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 179 transitions. [2024-06-27 18:17:04,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710526315789474 [2024-06-27 18:17:04,471 INFO L175 Difference]: Start difference. First operand has 174 places, 149 transitions, 1438 flow. Second operand 10 states and 179 transitions. [2024-06-27 18:17:04,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 184 transitions, 1996 flow [2024-06-27 18:17:04,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 184 transitions, 1835 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:04,581 INFO L231 Difference]: Finished difference. Result has 176 places, 149 transitions, 1404 flow [2024-06-27 18:17:04,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1404, PETRI_PLACES=176, PETRI_TRANSITIONS=149} [2024-06-27 18:17:04,581 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2024-06-27 18:17:04,581 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 149 transitions, 1404 flow [2024-06-27 18:17:04,581 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 18:17:04,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:04,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:04,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:17:04,582 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:04,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:04,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1610119141, now seen corresponding path program 4 times [2024-06-27 18:17:04,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:04,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296617748] [2024-06-27 18:17:04,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:04,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:05,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:05,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296617748] [2024-06-27 18:17:05,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296617748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:05,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:05,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:05,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915189203] [2024-06-27 18:17:05,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:05,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:05,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:05,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:05,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:05,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:05,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 149 transitions, 1404 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 18:17:05,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:05,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:05,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:05,806 INFO L124 PetriNetUnfolderBase]: 927/1628 cut-off events. [2024-06-27 18:17:05,806 INFO L125 PetriNetUnfolderBase]: For 51403/51403 co-relation queries the response was YES. [2024-06-27 18:17:05,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8663 conditions, 1628 events. 927/1628 cut-off events. For 51403/51403 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8147 event pairs, 211 based on Foata normal form. 1/1555 useless extension candidates. Maximal degree in co-relation 8579. Up to 1398 conditions per place. [2024-06-27 18:17:05,815 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 129 selfloop transitions, 36 changer transitions 0/173 dead transitions. [2024-06-27 18:17:05,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 173 transitions, 1818 flow [2024-06-27 18:17:05,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:17:05,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-27 18:17:05,816 INFO L175 Difference]: Start difference. First operand has 176 places, 149 transitions, 1404 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:17:05,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 173 transitions, 1818 flow [2024-06-27 18:17:05,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 173 transitions, 1691 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:05,935 INFO L231 Difference]: Finished difference. Result has 177 places, 151 transitions, 1388 flow [2024-06-27 18:17:05,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1388, PETRI_PLACES=177, PETRI_TRANSITIONS=151} [2024-06-27 18:17:05,936 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 135 predicate places. [2024-06-27 18:17:05,936 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 151 transitions, 1388 flow [2024-06-27 18:17:05,936 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 18:17:05,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:05,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:05,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:17:05,937 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:05,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1336287994, now seen corresponding path program 7 times [2024-06-27 18:17:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:05,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146486536] [2024-06-27 18:17:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:05,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:06,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:06,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:06,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146486536] [2024-06-27 18:17:06,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146486536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:06,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:06,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:06,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995198142] [2024-06-27 18:17:06,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:06,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:06,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:06,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:06,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:06,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:06,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 151 transitions, 1388 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 18:17:06,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:06,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:06,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:07,110 INFO L124 PetriNetUnfolderBase]: 987/1721 cut-off events. [2024-06-27 18:17:07,110 INFO L125 PetriNetUnfolderBase]: For 64655/64655 co-relation queries the response was YES. [2024-06-27 18:17:07,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9359 conditions, 1721 events. 987/1721 cut-off events. For 64655/64655 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 8693 event pairs, 203 based on Foata normal form. 3/1647 useless extension candidates. Maximal degree in co-relation 9274. Up to 912 conditions per place. [2024-06-27 18:17:07,121 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 120 selfloop transitions, 63 changer transitions 0/191 dead transitions. [2024-06-27 18:17:07,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 191 transitions, 2266 flow [2024-06-27 18:17:07,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:07,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:07,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 181 transitions. [2024-06-27 18:17:07,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4763157894736842 [2024-06-27 18:17:07,122 INFO L175 Difference]: Start difference. First operand has 177 places, 151 transitions, 1388 flow. Second operand 10 states and 181 transitions. [2024-06-27 18:17:07,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 191 transitions, 2266 flow [2024-06-27 18:17:07,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 191 transitions, 2175 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:07,245 INFO L231 Difference]: Finished difference. Result has 179 places, 157 transitions, 1524 flow [2024-06-27 18:17:07,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1524, PETRI_PLACES=179, PETRI_TRANSITIONS=157} [2024-06-27 18:17:07,246 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 137 predicate places. [2024-06-27 18:17:07,246 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 157 transitions, 1524 flow [2024-06-27 18:17:07,246 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 18:17:07,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:07,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:07,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:17:07,247 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:07,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:07,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1820427257, now seen corresponding path program 1 times [2024-06-27 18:17:07,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:07,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944450242] [2024-06-27 18:17:07,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:07,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:08,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944450242] [2024-06-27 18:17:08,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944450242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:08,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:08,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28652400] [2024-06-27 18:17:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:08,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:08,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:08,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 157 transitions, 1524 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 18:17:08,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:08,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:08,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:08,579 INFO L124 PetriNetUnfolderBase]: 904/1643 cut-off events. [2024-06-27 18:17:08,579 INFO L125 PetriNetUnfolderBase]: For 68844/68847 co-relation queries the response was YES. [2024-06-27 18:17:08,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9249 conditions, 1643 events. 904/1643 cut-off events. For 68844/68847 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8757 event pairs, 162 based on Foata normal form. 5/1559 useless extension candidates. Maximal degree in co-relation 9163. Up to 1364 conditions per place. [2024-06-27 18:17:08,595 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 143 selfloop transitions, 21 changer transitions 0/184 dead transitions. [2024-06-27 18:17:08,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 184 transitions, 1944 flow [2024-06-27 18:17:08,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:17:08,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45321637426900585 [2024-06-27 18:17:08,596 INFO L175 Difference]: Start difference. First operand has 179 places, 157 transitions, 1524 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:17:08,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 184 transitions, 1944 flow [2024-06-27 18:17:08,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 184 transitions, 1839 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:08,721 INFO L231 Difference]: Finished difference. Result has 184 places, 160 transitions, 1496 flow [2024-06-27 18:17:08,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1496, PETRI_PLACES=184, PETRI_TRANSITIONS=160} [2024-06-27 18:17:08,722 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 142 predicate places. [2024-06-27 18:17:08,722 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 160 transitions, 1496 flow [2024-06-27 18:17:08,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 18:17:08,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:08,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:08,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:17:08,722 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:08,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:08,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1820704304, now seen corresponding path program 8 times [2024-06-27 18:17:08,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:08,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748917789] [2024-06-27 18:17:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:08,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:09,534 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 18:17:09,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:09,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748917789] [2024-06-27 18:17:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748917789] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:09,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:09,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:09,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706198972] [2024-06-27 18:17:09,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:09,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:09,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:09,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:09,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:09,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:09,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 160 transitions, 1496 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 18:17:09,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:09,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:09,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:09,977 INFO L124 PetriNetUnfolderBase]: 998/1751 cut-off events. [2024-06-27 18:17:09,978 INFO L125 PetriNetUnfolderBase]: For 65377/65377 co-relation queries the response was YES. [2024-06-27 18:17:09,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9444 conditions, 1751 events. 998/1751 cut-off events. For 65377/65377 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8961 event pairs, 222 based on Foata normal form. 3/1675 useless extension candidates. Maximal degree in co-relation 9356. Up to 939 conditions per place. [2024-06-27 18:17:09,990 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 113 selfloop transitions, 70 changer transitions 0/191 dead transitions. [2024-06-27 18:17:09,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 191 transitions, 2180 flow [2024-06-27 18:17:09,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:09,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:17:09,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 18:17:09,991 INFO L175 Difference]: Start difference. First operand has 184 places, 160 transitions, 1496 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:17:09,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 191 transitions, 2180 flow [2024-06-27 18:17:10,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 191 transitions, 2120 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:10,136 INFO L231 Difference]: Finished difference. Result has 188 places, 160 transitions, 1581 flow [2024-06-27 18:17:10,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1581, PETRI_PLACES=188, PETRI_TRANSITIONS=160} [2024-06-27 18:17:10,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 146 predicate places. [2024-06-27 18:17:10,137 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 160 transitions, 1581 flow [2024-06-27 18:17:10,137 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 18:17:10,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:10,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:10,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:17:10,138 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:10,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1828061689, now seen corresponding path program 5 times [2024-06-27 18:17:10,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:10,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844132495] [2024-06-27 18:17:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:10,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:11,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:11,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844132495] [2024-06-27 18:17:11,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844132495] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:11,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:11,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:11,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235099060] [2024-06-27 18:17:11,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:11,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:11,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:11,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:11,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:11,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:11,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 160 transitions, 1581 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 18:17:11,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:11,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:11,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:11,518 INFO L124 PetriNetUnfolderBase]: 1004/1761 cut-off events. [2024-06-27 18:17:11,519 INFO L125 PetriNetUnfolderBase]: For 65163/65163 co-relation queries the response was YES. [2024-06-27 18:17:11,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9715 conditions, 1761 events. 1004/1761 cut-off events. For 65163/65163 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9015 event pairs, 222 based on Foata normal form. 1/1681 useless extension candidates. Maximal degree in co-relation 9626. Up to 1522 conditions per place. [2024-06-27 18:17:11,531 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 138 selfloop transitions, 35 changer transitions 0/181 dead transitions. [2024-06-27 18:17:11,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 181 transitions, 2005 flow [2024-06-27 18:17:11,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:11,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:11,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 158 transitions. [2024-06-27 18:17:11,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41578947368421054 [2024-06-27 18:17:11,532 INFO L175 Difference]: Start difference. First operand has 188 places, 160 transitions, 1581 flow. Second operand 10 states and 158 transitions. [2024-06-27 18:17:11,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 181 transitions, 2005 flow [2024-06-27 18:17:11,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 181 transitions, 1853 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:11,669 INFO L231 Difference]: Finished difference. Result has 189 places, 162 transitions, 1542 flow [2024-06-27 18:17:11,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1542, PETRI_PLACES=189, PETRI_TRANSITIONS=162} [2024-06-27 18:17:11,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 147 predicate places. [2024-06-27 18:17:11,670 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 162 transitions, 1542 flow [2024-06-27 18:17:11,670 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 18:17:11,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:11,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:11,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:17:11,671 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:11,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:11,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1632628706, now seen corresponding path program 9 times [2024-06-27 18:17:11,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:11,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160699722] [2024-06-27 18:17:11,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:11,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:12,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:12,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:12,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160699722] [2024-06-27 18:17:12,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160699722] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:12,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:12,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:12,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12374112] [2024-06-27 18:17:12,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:12,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:12,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:12,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:12,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:12,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:12,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 162 transitions, 1542 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 18:17:12,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:12,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:12,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:12,901 INFO L124 PetriNetUnfolderBase]: 1020/1786 cut-off events. [2024-06-27 18:17:12,901 INFO L125 PetriNetUnfolderBase]: For 70041/70041 co-relation queries the response was YES. [2024-06-27 18:17:12,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9695 conditions, 1786 events. 1020/1786 cut-off events. For 70041/70041 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9184 event pairs, 198 based on Foata normal form. 3/1707 useless extension candidates. Maximal degree in co-relation 9605. Up to 961 conditions per place. [2024-06-27 18:17:12,912 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 120 selfloop transitions, 69 changer transitions 0/197 dead transitions. [2024-06-27 18:17:12,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 197 transitions, 2288 flow [2024-06-27 18:17:12,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:12,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:12,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 18:17:12,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 18:17:12,914 INFO L175 Difference]: Start difference. First operand has 189 places, 162 transitions, 1542 flow. Second operand 10 states and 178 transitions. [2024-06-27 18:17:12,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 197 transitions, 2288 flow [2024-06-27 18:17:13,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 197 transitions, 2195 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:13,050 INFO L231 Difference]: Finished difference. Result has 191 places, 164 transitions, 1624 flow [2024-06-27 18:17:13,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1449, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1624, PETRI_PLACES=191, PETRI_TRANSITIONS=164} [2024-06-27 18:17:13,050 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 149 predicate places. [2024-06-27 18:17:13,050 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 164 transitions, 1624 flow [2024-06-27 18:17:13,050 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 18:17:13,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:13,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:13,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:17:13,051 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:13,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1632623126, now seen corresponding path program 10 times [2024-06-27 18:17:13,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:13,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963026985] [2024-06-27 18:17:13,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:13,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:13,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:13,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:13,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963026985] [2024-06-27 18:17:13,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963026985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:13,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:13,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:13,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036682506] [2024-06-27 18:17:13,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:13,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:13,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:13,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:13,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 164 transitions, 1624 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 18:17:13,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:13,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:13,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:14,283 INFO L124 PetriNetUnfolderBase]: 1014/1777 cut-off events. [2024-06-27 18:17:14,283 INFO L125 PetriNetUnfolderBase]: For 67738/67738 co-relation queries the response was YES. [2024-06-27 18:17:14,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9725 conditions, 1777 events. 1014/1777 cut-off events. For 67738/67738 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 9139 event pairs, 198 based on Foata normal form. 3/1698 useless extension candidates. Maximal degree in co-relation 9634. Up to 957 conditions per place. [2024-06-27 18:17:14,293 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 121 selfloop transitions, 67 changer transitions 0/196 dead transitions. [2024-06-27 18:17:14,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 196 transitions, 2222 flow [2024-06-27 18:17:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:14,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 18:17:14,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46842105263157896 [2024-06-27 18:17:14,295 INFO L175 Difference]: Start difference. First operand has 191 places, 164 transitions, 1624 flow. Second operand 10 states and 178 transitions. [2024-06-27 18:17:14,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 196 transitions, 2222 flow [2024-06-27 18:17:14,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 196 transitions, 2067 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:14,471 INFO L231 Difference]: Finished difference. Result has 194 places, 164 transitions, 1608 flow [2024-06-27 18:17:14,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1608, PETRI_PLACES=194, PETRI_TRANSITIONS=164} [2024-06-27 18:17:14,471 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2024-06-27 18:17:14,471 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 164 transitions, 1608 flow [2024-06-27 18:17:14,472 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 18:17:14,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:14,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:14,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:17:14,472 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:14,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:14,473 INFO L85 PathProgramCache]: Analyzing trace with hash -198766114, now seen corresponding path program 11 times [2024-06-27 18:17:14,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:14,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566098974] [2024-06-27 18:17:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:14,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:15,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:15,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566098974] [2024-06-27 18:17:15,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566098974] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:15,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:15,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:15,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191917305] [2024-06-27 18:17:15,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:15,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:15,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:15,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:15,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:15,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:15,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 164 transitions, 1608 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 18:17:15,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:15,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:15,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:15,621 INFO L124 PetriNetUnfolderBase]: 1052/1834 cut-off events. [2024-06-27 18:17:15,622 INFO L125 PetriNetUnfolderBase]: For 75576/75576 co-relation queries the response was YES. [2024-06-27 18:17:15,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10213 conditions, 1834 events. 1052/1834 cut-off events. For 75576/75576 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9437 event pairs, 204 based on Foata normal form. 3/1754 useless extension candidates. Maximal degree in co-relation 10121. Up to 1441 conditions per place. [2024-06-27 18:17:15,635 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 156 selfloop transitions, 32 changer transitions 0/196 dead transitions. [2024-06-27 18:17:15,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 196 transitions, 2384 flow [2024-06-27 18:17:15,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:15,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:15,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:17:15,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2024-06-27 18:17:15,638 INFO L175 Difference]: Start difference. First operand has 194 places, 164 transitions, 1608 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:17:15,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 196 transitions, 2384 flow [2024-06-27 18:17:15,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 196 transitions, 2223 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 18:17:15,809 INFO L231 Difference]: Finished difference. Result has 194 places, 168 transitions, 1592 flow [2024-06-27 18:17:15,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1592, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2024-06-27 18:17:15,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 152 predicate places. [2024-06-27 18:17:15,810 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 1592 flow [2024-06-27 18:17:15,810 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 18:17:15,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:15,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:15,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:17:15,810 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:15,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:15,811 INFO L85 PathProgramCache]: Analyzing trace with hash -2115442493, now seen corresponding path program 2 times [2024-06-27 18:17:15,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:15,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891946002] [2024-06-27 18:17:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:15,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:16,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891946002] [2024-06-27 18:17:16,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891946002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:16,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:16,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:17:16,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312044041] [2024-06-27 18:17:16,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:16,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:17:16,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:16,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:17:16,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:17:16,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:16,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 1592 flow. Second operand has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 18:17:16,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:16,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:16,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:17,263 INFO L124 PetriNetUnfolderBase]: 965/1725 cut-off events. [2024-06-27 18:17:17,263 INFO L125 PetriNetUnfolderBase]: For 81663/81672 co-relation queries the response was YES. [2024-06-27 18:17:17,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9587 conditions, 1725 events. 965/1725 cut-off events. For 81663/81672 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9148 event pairs, 192 based on Foata normal form. 7/1630 useless extension candidates. Maximal degree in co-relation 9494. Up to 1503 conditions per place. [2024-06-27 18:17:17,276 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 153 selfloop transitions, 17 changer transitions 0/190 dead transitions. [2024-06-27 18:17:17,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 190 transitions, 2006 flow [2024-06-27 18:17:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:17,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:17:17,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4327485380116959 [2024-06-27 18:17:17,277 INFO L175 Difference]: Start difference. First operand has 194 places, 168 transitions, 1592 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:17:17,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 190 transitions, 2006 flow [2024-06-27 18:17:17,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 190 transitions, 1882 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:17,430 INFO L231 Difference]: Finished difference. Result has 196 places, 172 transitions, 1544 flow [2024-06-27 18:17:17,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1544, PETRI_PLACES=196, PETRI_TRANSITIONS=172} [2024-06-27 18:17:17,431 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 154 predicate places. [2024-06-27 18:17:17,431 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 172 transitions, 1544 flow [2024-06-27 18:17:17,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.4) internal successors, (114), 10 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 18:17:17,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:17,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:17,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:17:17,432 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:17,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:17,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2115857614, now seen corresponding path program 1 times [2024-06-27 18:17:17,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:17,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083177348] [2024-06-27 18:17:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:17,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:18,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:18,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083177348] [2024-06-27 18:17:18,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083177348] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:18,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:18,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:18,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003974594] [2024-06-27 18:17:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:18,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:18,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:18,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:18,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:18,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:18,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 172 transitions, 1544 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 18:17:18,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:18,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:18,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:18,969 INFO L124 PetriNetUnfolderBase]: 1063/1855 cut-off events. [2024-06-27 18:17:18,969 INFO L125 PetriNetUnfolderBase]: For 73384/73384 co-relation queries the response was YES. [2024-06-27 18:17:18,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9995 conditions, 1855 events. 1063/1855 cut-off events. For 73384/73384 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9575 event pairs, 240 based on Foata normal form. 1/1772 useless extension candidates. Maximal degree in co-relation 9900. Up to 1688 conditions per place. [2024-06-27 18:17:18,980 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 162 selfloop transitions, 20 changer transitions 0/190 dead transitions. [2024-06-27 18:17:18,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 190 transitions, 1978 flow [2024-06-27 18:17:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:18,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 137 transitions. [2024-06-27 18:17:18,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40058479532163743 [2024-06-27 18:17:18,982 INFO L175 Difference]: Start difference. First operand has 196 places, 172 transitions, 1544 flow. Second operand 9 states and 137 transitions. [2024-06-27 18:17:18,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 190 transitions, 1978 flow [2024-06-27 18:17:19,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 190 transitions, 1942 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-06-27 18:17:19,157 INFO L231 Difference]: Finished difference. Result has 200 places, 174 transitions, 1592 flow [2024-06-27 18:17:19,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1508, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1592, PETRI_PLACES=200, PETRI_TRANSITIONS=174} [2024-06-27 18:17:19,158 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 158 predicate places. [2024-06-27 18:17:19,158 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 174 transitions, 1592 flow [2024-06-27 18:17:19,158 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 18:17:19,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:19,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:19,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:17:19,158 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:19,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:19,159 INFO L85 PathProgramCache]: Analyzing trace with hash 711099203, now seen corresponding path program 6 times [2024-06-27 18:17:19,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:19,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341022545] [2024-06-27 18:17:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:19,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:19,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:19,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341022545] [2024-06-27 18:17:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341022545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719001232] [2024-06-27 18:17:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:19,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:19,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:19,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:19,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:20,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:20,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 174 transitions, 1592 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 18:17:20,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:20,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:20,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:20,488 INFO L124 PetriNetUnfolderBase]: 1061/1852 cut-off events. [2024-06-27 18:17:20,489 INFO L125 PetriNetUnfolderBase]: For 73475/73475 co-relation queries the response was YES. [2024-06-27 18:17:20,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9993 conditions, 1852 events. 1061/1852 cut-off events. For 73475/73475 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9556 event pairs, 238 based on Foata normal form. 1/1769 useless extension candidates. Maximal degree in co-relation 9896. Up to 1708 conditions per place. [2024-06-27 18:17:20,499 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 167 selfloop transitions, 17 changer transitions 0/192 dead transitions. [2024-06-27 18:17:20,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 192 transitions, 2032 flow [2024-06-27 18:17:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:20,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2024-06-27 18:17:20,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3868421052631579 [2024-06-27 18:17:20,500 INFO L175 Difference]: Start difference. First operand has 200 places, 174 transitions, 1592 flow. Second operand 10 states and 147 transitions. [2024-06-27 18:17:20,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 192 transitions, 2032 flow [2024-06-27 18:17:20,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 192 transitions, 1978 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:20,666 INFO L231 Difference]: Finished difference. Result has 203 places, 176 transitions, 1619 flow [2024-06-27 18:17:20,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1619, PETRI_PLACES=203, PETRI_TRANSITIONS=176} [2024-06-27 18:17:20,667 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 161 predicate places. [2024-06-27 18:17:20,667 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 176 transitions, 1619 flow [2024-06-27 18:17:20,667 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 18:17:20,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:20,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:20,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:17:20,668 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:20,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:20,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2127475763, now seen corresponding path program 3 times [2024-06-27 18:17:20,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619089378] [2024-06-27 18:17:20,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:20,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:21,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:21,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619089378] [2024-06-27 18:17:21,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619089378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:21,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:21,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:21,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875730202] [2024-06-27 18:17:21,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:21,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:21,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:21,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:21,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:21,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:21,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 176 transitions, 1619 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:21,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:21,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:21,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:22,236 INFO L124 PetriNetUnfolderBase]: 983/1764 cut-off events. [2024-06-27 18:17:22,236 INFO L125 PetriNetUnfolderBase]: For 86190/86202 co-relation queries the response was YES. [2024-06-27 18:17:22,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9747 conditions, 1764 events. 983/1764 cut-off events. For 86190/86202 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9436 event pairs, 208 based on Foata normal form. 7/1661 useless extension candidates. Maximal degree in co-relation 9649. Up to 1533 conditions per place. [2024-06-27 18:17:22,247 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 158 selfloop transitions, 17 changer transitions 0/196 dead transitions. [2024-06-27 18:17:22,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 196 transitions, 2035 flow [2024-06-27 18:17:22,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:22,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:22,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:17:22,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-27 18:17:22,248 INFO L175 Difference]: Start difference. First operand has 203 places, 176 transitions, 1619 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:17:22,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 196 transitions, 2035 flow [2024-06-27 18:17:22,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 196 transitions, 1974 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:22,409 INFO L231 Difference]: Finished difference. Result has 204 places, 177 transitions, 1613 flow [2024-06-27 18:17:22,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1613, PETRI_PLACES=204, PETRI_TRANSITIONS=177} [2024-06-27 18:17:22,410 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 162 predicate places. [2024-06-27 18:17:22,410 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 177 transitions, 1613 flow [2024-06-27 18:17:22,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:22,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:22,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:22,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:17:22,411 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:22,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:22,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1825492496, now seen corresponding path program 12 times [2024-06-27 18:17:22,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:22,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902895644] [2024-06-27 18:17:22,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:22,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:23,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:23,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902895644] [2024-06-27 18:17:23,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902895644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:23,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:23,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:23,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699476859] [2024-06-27 18:17:23,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:23,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:23,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:23,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:23,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:23,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 177 transitions, 1613 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 18:17:23,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:23,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:23,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:23,646 INFO L124 PetriNetUnfolderBase]: 1094/1917 cut-off events. [2024-06-27 18:17:23,646 INFO L125 PetriNetUnfolderBase]: For 82379/82379 co-relation queries the response was YES. [2024-06-27 18:17:23,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10357 conditions, 1917 events. 1094/1917 cut-off events. For 82379/82379 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10011 event pairs, 243 based on Foata normal form. 3/1832 useless extension candidates. Maximal degree in co-relation 10258. Up to 1706 conditions per place. [2024-06-27 18:17:23,660 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 178 selfloop transitions, 17 changer transitions 0/203 dead transitions. [2024-06-27 18:17:23,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 203 transitions, 2109 flow [2024-06-27 18:17:23,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:17:23,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-27 18:17:23,661 INFO L175 Difference]: Start difference. First operand has 204 places, 177 transitions, 1613 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:17:23,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 203 transitions, 2109 flow [2024-06-27 18:17:23,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 203 transitions, 2068 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:23,859 INFO L231 Difference]: Finished difference. Result has 207 places, 179 transitions, 1647 flow [2024-06-27 18:17:23,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1647, PETRI_PLACES=207, PETRI_TRANSITIONS=179} [2024-06-27 18:17:23,860 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 165 predicate places. [2024-06-27 18:17:23,860 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 179 transitions, 1647 flow [2024-06-27 18:17:23,861 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 18:17:23,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:23,861 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:23,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:17:23,861 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:23,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1825769543, now seen corresponding path program 4 times [2024-06-27 18:17:23,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:23,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027220912] [2024-06-27 18:17:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:24,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:24,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:24,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027220912] [2024-06-27 18:17:24,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027220912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:24,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:24,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:24,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528795511] [2024-06-27 18:17:24,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:24,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:24,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:24,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:24,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:25,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:25,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 179 transitions, 1647 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:25,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:25,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:25,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:25,466 INFO L124 PetriNetUnfolderBase]: 1011/1821 cut-off events. [2024-06-27 18:17:25,467 INFO L125 PetriNetUnfolderBase]: For 90646/90652 co-relation queries the response was YES. [2024-06-27 18:17:25,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9972 conditions, 1821 events. 1011/1821 cut-off events. For 90646/90652 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9882 event pairs, 214 based on Foata normal form. 8/1720 useless extension candidates. Maximal degree in co-relation 9872. Up to 1595 conditions per place. [2024-06-27 18:17:25,478 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 166 selfloop transitions, 14 changer transitions 0/201 dead transitions. [2024-06-27 18:17:25,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 201 transitions, 2091 flow [2024-06-27 18:17:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:25,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:17:25,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4269005847953216 [2024-06-27 18:17:25,479 INFO L175 Difference]: Start difference. First operand has 207 places, 179 transitions, 1647 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:17:25,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 201 transitions, 2091 flow [2024-06-27 18:17:25,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 201 transitions, 2040 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:25,669 INFO L231 Difference]: Finished difference. Result has 209 places, 182 transitions, 1667 flow [2024-06-27 18:17:25,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1667, PETRI_PLACES=209, PETRI_TRANSITIONS=182} [2024-06-27 18:17:25,670 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 167 predicate places. [2024-06-27 18:17:25,670 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 182 transitions, 1667 flow [2024-06-27 18:17:25,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:25,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:25,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:25,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:17:25,670 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:25,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:25,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1414960604, now seen corresponding path program 13 times [2024-06-27 18:17:25,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:25,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298877541] [2024-06-27 18:17:25,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:25,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:26,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:26,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:26,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298877541] [2024-06-27 18:17:26,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298877541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:26,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:26,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:26,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431860325] [2024-06-27 18:17:26,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:26,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:26,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:26,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:26,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:26,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 182 transitions, 1667 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 18:17:26,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:26,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:26,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:26,851 INFO L124 PetriNetUnfolderBase]: 1127/1982 cut-off events. [2024-06-27 18:17:26,852 INFO L125 PetriNetUnfolderBase]: For 88003/88003 co-relation queries the response was YES. [2024-06-27 18:17:26,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10801 conditions, 1982 events. 1127/1982 cut-off events. For 88003/88003 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10483 event pairs, 200 based on Foata normal form. 3/1893 useless extension candidates. Maximal degree in co-relation 10699. Up to 1546 conditions per place. [2024-06-27 18:17:26,865 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 165 selfloop transitions, 39 changer transitions 0/212 dead transitions. [2024-06-27 18:17:26,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 212 transitions, 2467 flow [2024-06-27 18:17:26,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:26,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:17:26,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 18:17:26,866 INFO L175 Difference]: Start difference. First operand has 209 places, 182 transitions, 1667 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:17:26,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 212 transitions, 2467 flow [2024-06-27 18:17:27,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 212 transitions, 2427 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:27,076 INFO L231 Difference]: Finished difference. Result has 213 places, 184 transitions, 1740 flow [2024-06-27 18:17:27,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1627, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1740, PETRI_PLACES=213, PETRI_TRANSITIONS=184} [2024-06-27 18:17:27,076 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 171 predicate places. [2024-06-27 18:17:27,076 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 184 transitions, 1740 flow [2024-06-27 18:17:27,077 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 18:17:27,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:27,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:27,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:17:27,077 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:27,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:27,077 INFO L85 PathProgramCache]: Analyzing trace with hash 711099358, now seen corresponding path program 14 times [2024-06-27 18:17:27,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:27,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470435603] [2024-06-27 18:17:27,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:27,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:27,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:27,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:27,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:27,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470435603] [2024-06-27 18:17:27,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470435603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:27,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:27,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:27,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154860111] [2024-06-27 18:17:27,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:27,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:27,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:27,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:27,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:27,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 184 transitions, 1740 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 18:17:27,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:27,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:27,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:28,407 INFO L124 PetriNetUnfolderBase]: 1121/1973 cut-off events. [2024-06-27 18:17:28,407 INFO L125 PetriNetUnfolderBase]: For 83896/83896 co-relation queries the response was YES. [2024-06-27 18:17:28,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10665 conditions, 1973 events. 1121/1973 cut-off events. For 83896/83896 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10441 event pairs, 198 based on Foata normal form. 3/1884 useless extension candidates. Maximal degree in co-relation 10562. Up to 1542 conditions per place. [2024-06-27 18:17:28,421 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 161 selfloop transitions, 42 changer transitions 0/211 dead transitions. [2024-06-27 18:17:28,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 211 transitions, 2376 flow [2024-06-27 18:17:28,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:17:28,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42894736842105263 [2024-06-27 18:17:28,422 INFO L175 Difference]: Start difference. First operand has 213 places, 184 transitions, 1740 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:17:28,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 211 transitions, 2376 flow [2024-06-27 18:17:28,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 211 transitions, 2234 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:28,631 INFO L231 Difference]: Finished difference. Result has 215 places, 184 transitions, 1687 flow [2024-06-27 18:17:28,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1687, PETRI_PLACES=215, PETRI_TRANSITIONS=184} [2024-06-27 18:17:28,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 173 predicate places. [2024-06-27 18:17:28,634 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 184 transitions, 1687 flow [2024-06-27 18:17:28,634 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 18:17:28,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:28,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:28,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:17:28,635 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:28,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:28,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1355620177, now seen corresponding path program 5 times [2024-06-27 18:17:28,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:28,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168308761] [2024-06-27 18:17:28,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:28,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:29,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:29,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:29,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168308761] [2024-06-27 18:17:29,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168308761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:29,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:29,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:29,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125666312] [2024-06-27 18:17:29,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:29,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:29,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:29,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:29,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:29,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-06-27 18:17:29,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 184 transitions, 1687 flow. Second operand has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:29,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:29,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-06-27 18:17:29,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:30,288 INFO L124 PetriNetUnfolderBase]: 1027/1856 cut-off events. [2024-06-27 18:17:30,289 INFO L125 PetriNetUnfolderBase]: For 88543/88555 co-relation queries the response was YES. [2024-06-27 18:17:30,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10060 conditions, 1856 events. 1027/1856 cut-off events. For 88543/88555 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10141 event pairs, 200 based on Foata normal form. 7/1746 useless extension candidates. Maximal degree in co-relation 9956. Up to 1587 conditions per place. [2024-06-27 18:17:30,301 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 165 selfloop transitions, 21 changer transitions 0/207 dead transitions. [2024-06-27 18:17:30,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 207 transitions, 2151 flow [2024-06-27 18:17:30,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:17:30,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:17:30,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 151 transitions. [2024-06-27 18:17:30,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4415204678362573 [2024-06-27 18:17:30,302 INFO L175 Difference]: Start difference. First operand has 215 places, 184 transitions, 1687 flow. Second operand 9 states and 151 transitions. [2024-06-27 18:17:30,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 207 transitions, 2151 flow [2024-06-27 18:17:30,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 207 transitions, 2073 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:30,540 INFO L231 Difference]: Finished difference. Result has 217 places, 187 transitions, 1698 flow [2024-06-27 18:17:30,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1698, PETRI_PLACES=217, PETRI_TRANSITIONS=187} [2024-06-27 18:17:30,540 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 175 predicate places. [2024-06-27 18:17:30,540 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 187 transitions, 1698 flow [2024-06-27 18:17:30,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.272727272727273) internal successors, (124), 11 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:17:30,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:30,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:30,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:17:30,541 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:30,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:30,541 INFO L85 PathProgramCache]: Analyzing trace with hash 718456588, now seen corresponding path program 15 times [2024-06-27 18:17:30,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:30,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689190211] [2024-06-27 18:17:30,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:30,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:31,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689190211] [2024-06-27 18:17:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689190211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:31,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:31,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:31,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871110255] [2024-06-27 18:17:31,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:31,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:31,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 187 transitions, 1698 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 18:17:31,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:31,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:31,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:31,745 INFO L124 PetriNetUnfolderBase]: 1116/1975 cut-off events. [2024-06-27 18:17:31,745 INFO L125 PetriNetUnfolderBase]: For 76304/76304 co-relation queries the response was YES. [2024-06-27 18:17:31,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10311 conditions, 1975 events. 1116/1975 cut-off events. For 76304/76304 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10519 event pairs, 226 based on Foata normal form. 3/1884 useless extension candidates. Maximal degree in co-relation 10205. Up to 1541 conditions per place. [2024-06-27 18:17:31,763 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 169 selfloop transitions, 36 changer transitions 0/213 dead transitions. [2024-06-27 18:17:31,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 213 transitions, 2212 flow [2024-06-27 18:17:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:31,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:17:31,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 18:17:31,764 INFO L175 Difference]: Start difference. First operand has 217 places, 187 transitions, 1698 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:17:31,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 213 transitions, 2212 flow [2024-06-27 18:17:31,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 213 transitions, 2140 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:31,981 INFO L231 Difference]: Finished difference. Result has 221 places, 187 transitions, 1703 flow [2024-06-27 18:17:31,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1703, PETRI_PLACES=221, PETRI_TRANSITIONS=187} [2024-06-27 18:17:31,981 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-27 18:17:31,981 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 187 transitions, 1703 flow [2024-06-27 18:17:31,981 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 18:17:31,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:31,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:31,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:17:31,982 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:31,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:31,982 INFO L85 PathProgramCache]: Analyzing trace with hash 564100853, now seen corresponding path program 1 times [2024-06-27 18:17:31,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:31,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208725759] [2024-06-27 18:17:31,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:31,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:32,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:32,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:32,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208725759] [2024-06-27 18:17:32,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208725759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:32,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:32,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:32,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54345563] [2024-06-27 18:17:32,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:32,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:32,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:32,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:32,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:32,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:32,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 187 transitions, 1703 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 18:17:32,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:32,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:32,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:33,390 INFO L124 PetriNetUnfolderBase]: 1112/1969 cut-off events. [2024-06-27 18:17:33,390 INFO L125 PetriNetUnfolderBase]: For 70450/70450 co-relation queries the response was YES. [2024-06-27 18:17:33,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10122 conditions, 1969 events. 1112/1969 cut-off events. For 70450/70450 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10477 event pairs, 233 based on Foata normal form. 2/1877 useless extension candidates. Maximal degree in co-relation 10015. Up to 1760 conditions per place. [2024-06-27 18:17:33,405 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 177 selfloop transitions, 23 changer transitions 0/208 dead transitions. [2024-06-27 18:17:33,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 208 transitions, 2179 flow [2024-06-27 18:17:33,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:33,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 161 transitions. [2024-06-27 18:17:33,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38516746411483255 [2024-06-27 18:17:33,406 INFO L175 Difference]: Start difference. First operand has 221 places, 187 transitions, 1703 flow. Second operand 11 states and 161 transitions. [2024-06-27 18:17:33,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 208 transitions, 2179 flow [2024-06-27 18:17:33,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 208 transitions, 2056 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 18:17:33,599 INFO L231 Difference]: Finished difference. Result has 221 places, 189 transitions, 1666 flow [2024-06-27 18:17:33,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1666, PETRI_PLACES=221, PETRI_TRANSITIONS=189} [2024-06-27 18:17:33,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2024-06-27 18:17:33,600 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 189 transitions, 1666 flow [2024-06-27 18:17:33,600 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 18:17:33,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:33,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:33,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:17:33,601 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:33,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:33,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1319501960, now seen corresponding path program 1 times [2024-06-27 18:17:33,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:33,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903772601] [2024-06-27 18:17:33,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:33,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:34,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:34,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:34,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903772601] [2024-06-27 18:17:34,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903772601] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:34,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:34,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804493114] [2024-06-27 18:17:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:34,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:34,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:34,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:34,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:34,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:34,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 189 transitions, 1666 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 18:17:34,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:34,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:34,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:35,387 INFO L124 PetriNetUnfolderBase]: 1149/2062 cut-off events. [2024-06-27 18:17:35,388 INFO L125 PetriNetUnfolderBase]: For 78804/78804 co-relation queries the response was YES. [2024-06-27 18:17:35,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10650 conditions, 2062 events. 1149/2062 cut-off events. For 78804/78804 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 11142 event pairs, 189 based on Foata normal form. 2/1963 useless extension candidates. Maximal degree in co-relation 10542. Up to 1734 conditions per place. [2024-06-27 18:17:35,402 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 204 selfloop transitions, 23 changer transitions 0/235 dead transitions. [2024-06-27 18:17:35,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 235 transitions, 2440 flow [2024-06-27 18:17:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:17:35,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:17:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-27 18:17:35,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-27 18:17:35,403 INFO L175 Difference]: Start difference. First operand has 221 places, 189 transitions, 1666 flow. Second operand 12 states and 196 transitions. [2024-06-27 18:17:35,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 235 transitions, 2440 flow [2024-06-27 18:17:35,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 235 transitions, 2370 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 18:17:35,609 INFO L231 Difference]: Finished difference. Result has 223 places, 191 transitions, 1696 flow [2024-06-27 18:17:35,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1596, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1696, PETRI_PLACES=223, PETRI_TRANSITIONS=191} [2024-06-27 18:17:35,610 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 181 predicate places. [2024-06-27 18:17:35,610 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 191 transitions, 1696 flow [2024-06-27 18:17:35,610 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 18:17:35,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:35,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:35,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:17:35,611 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:35,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:35,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1909639900, now seen corresponding path program 2 times [2024-06-27 18:17:35,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:35,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011042907] [2024-06-27 18:17:35,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:35,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:36,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:36,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011042907] [2024-06-27 18:17:36,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011042907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:36,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:36,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:36,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101880755] [2024-06-27 18:17:36,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:36,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:36,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:36,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:36,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 191 transitions, 1696 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 18:17:36,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:36,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:36,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:37,694 INFO L124 PetriNetUnfolderBase]: 1166/2094 cut-off events. [2024-06-27 18:17:37,694 INFO L125 PetriNetUnfolderBase]: For 82084/82084 co-relation queries the response was YES. [2024-06-27 18:17:37,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10949 conditions, 2094 events. 1166/2094 cut-off events. For 82084/82084 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11500 event pairs, 244 based on Foata normal form. 2/1994 useless extension candidates. Maximal degree in co-relation 10842. Up to 1836 conditions per place. [2024-06-27 18:17:37,707 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 201 selfloop transitions, 22 changer transitions 0/231 dead transitions. [2024-06-27 18:17:37,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 231 transitions, 2278 flow [2024-06-27 18:17:37,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:17:37,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:17:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 18:17:37,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-27 18:17:37,708 INFO L175 Difference]: Start difference. First operand has 223 places, 191 transitions, 1696 flow. Second operand 12 states and 192 transitions. [2024-06-27 18:17:37,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 231 transitions, 2278 flow [2024-06-27 18:17:37,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 231 transitions, 2211 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:37,913 INFO L231 Difference]: Finished difference. Result has 227 places, 192 transitions, 1705 flow [2024-06-27 18:17:37,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1705, PETRI_PLACES=227, PETRI_TRANSITIONS=192} [2024-06-27 18:17:37,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 185 predicate places. [2024-06-27 18:17:37,914 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 192 transitions, 1705 flow [2024-06-27 18:17:37,914 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 18:17:37,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:37,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:37,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:17:37,915 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:37,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:37,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1909639776, now seen corresponding path program 1 times [2024-06-27 18:17:37,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:37,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624632672] [2024-06-27 18:17:37,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:37,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:38,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:38,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624632672] [2024-06-27 18:17:38,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624632672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:38,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:38,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:38,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062937588] [2024-06-27 18:17:38,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:38,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:38,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:38,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:39,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:39,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 192 transitions, 1705 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 18:17:39,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:39,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:39,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:39,832 INFO L124 PetriNetUnfolderBase]: 1185/2122 cut-off events. [2024-06-27 18:17:39,832 INFO L125 PetriNetUnfolderBase]: For 86404/86404 co-relation queries the response was YES. [2024-06-27 18:17:39,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11002 conditions, 2122 events. 1185/2122 cut-off events. For 86404/86404 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11647 event pairs, 243 based on Foata normal form. 3/2018 useless extension candidates. Maximal degree in co-relation 10893. Up to 1846 conditions per place. [2024-06-27 18:17:39,848 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 201 selfloop transitions, 26 changer transitions 0/235 dead transitions. [2024-06-27 18:17:39,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 235 transitions, 2327 flow [2024-06-27 18:17:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:17:39,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:17:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 205 transitions. [2024-06-27 18:17:39,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149797570850202 [2024-06-27 18:17:39,849 INFO L175 Difference]: Start difference. First operand has 227 places, 192 transitions, 1705 flow. Second operand 13 states and 205 transitions. [2024-06-27 18:17:39,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 235 transitions, 2327 flow [2024-06-27 18:17:40,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 235 transitions, 2261 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-27 18:17:40,088 INFO L231 Difference]: Finished difference. Result has 229 places, 195 transitions, 1759 flow [2024-06-27 18:17:40,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1639, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1759, PETRI_PLACES=229, PETRI_TRANSITIONS=195} [2024-06-27 18:17:40,088 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-27 18:17:40,089 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 195 transitions, 1759 flow [2024-06-27 18:17:40,089 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 18:17:40,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:40,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:40,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:17:40,089 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:40,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:40,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1906843390, now seen corresponding path program 3 times [2024-06-27 18:17:40,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:40,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18242042] [2024-06-27 18:17:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:40,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:41,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:41,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:41,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18242042] [2024-06-27 18:17:41,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18242042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:41,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:41,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:41,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229968961] [2024-06-27 18:17:41,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:41,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:41,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:41,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:41,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:41,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:41,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 195 transitions, 1759 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 18:17:41,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:41,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:41,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:41,823 INFO L124 PetriNetUnfolderBase]: 1182/2117 cut-off events. [2024-06-27 18:17:41,824 INFO L125 PetriNetUnfolderBase]: For 80343/80343 co-relation queries the response was YES. [2024-06-27 18:17:41,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10917 conditions, 2117 events. 1182/2117 cut-off events. For 80343/80343 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 11608 event pairs, 245 based on Foata normal form. 2/2013 useless extension candidates. Maximal degree in co-relation 10808. Up to 1875 conditions per place. [2024-06-27 18:17:41,839 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 203 selfloop transitions, 18 changer transitions 0/229 dead transitions. [2024-06-27 18:17:41,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 229 transitions, 2297 flow [2024-06-27 18:17:41,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:41,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:17:41,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-27 18:17:41,840 INFO L175 Difference]: Start difference. First operand has 229 places, 195 transitions, 1759 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:17:41,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 229 transitions, 2297 flow [2024-06-27 18:17:42,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 229 transitions, 2197 flow, removed 27 selfloop flow, removed 11 redundant places. [2024-06-27 18:17:42,107 INFO L231 Difference]: Finished difference. Result has 229 places, 195 transitions, 1699 flow [2024-06-27 18:17:42,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1699, PETRI_PLACES=229, PETRI_TRANSITIONS=195} [2024-06-27 18:17:42,108 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 187 predicate places. [2024-06-27 18:17:42,108 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 195 transitions, 1699 flow [2024-06-27 18:17:42,108 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 18:17:42,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:42,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:42,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:17:42,109 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:42,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1791552220, now seen corresponding path program 4 times [2024-06-27 18:17:42,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:42,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214219330] [2024-06-27 18:17:42,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:42,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:43,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:43,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214219330] [2024-06-27 18:17:43,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214219330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:43,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:43,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:43,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892058646] [2024-06-27 18:17:43,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:43,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:43,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:43,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:43,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:43,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:43,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 195 transitions, 1699 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 18:17:43,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:43,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:43,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:43,575 INFO L124 PetriNetUnfolderBase]: 1199/2158 cut-off events. [2024-06-27 18:17:43,575 INFO L125 PetriNetUnfolderBase]: For 82408/82408 co-relation queries the response was YES. [2024-06-27 18:17:43,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10967 conditions, 2158 events. 1199/2158 cut-off events. For 82408/82408 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 11959 event pairs, 250 based on Foata normal form. 2/2051 useless extension candidates. Maximal degree in co-relation 10857. Up to 1836 conditions per place. [2024-06-27 18:17:43,591 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 180 selfloop transitions, 39 changer transitions 0/227 dead transitions. [2024-06-27 18:17:43,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 227 transitions, 2249 flow [2024-06-27 18:17:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:17:43,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-27 18:17:43,592 INFO L175 Difference]: Start difference. First operand has 229 places, 195 transitions, 1699 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:17:43,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 227 transitions, 2249 flow [2024-06-27 18:17:43,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 227 transitions, 2207 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 18:17:43,830 INFO L231 Difference]: Finished difference. Result has 230 places, 196 transitions, 1767 flow [2024-06-27 18:17:43,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1657, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1767, PETRI_PLACES=230, PETRI_TRANSITIONS=196} [2024-06-27 18:17:43,830 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 188 predicate places. [2024-06-27 18:17:43,830 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 196 transitions, 1767 flow [2024-06-27 18:17:43,830 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 18:17:43,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:43,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:43,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:17:43,831 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:43,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:43,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1201353706, now seen corresponding path program 2 times [2024-06-27 18:17:43,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:43,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575102511] [2024-06-27 18:17:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:44,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:44,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:44,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575102511] [2024-06-27 18:17:44,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575102511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:44,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:44,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:44,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904213418] [2024-06-27 18:17:44,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:44,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:44,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:44,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:44,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:44,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:44,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 196 transitions, 1767 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 18:17:44,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:44,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:44,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:45,491 INFO L124 PetriNetUnfolderBase]: 1243/2223 cut-off events. [2024-06-27 18:17:45,491 INFO L125 PetriNetUnfolderBase]: For 97484/97484 co-relation queries the response was YES. [2024-06-27 18:17:45,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11818 conditions, 2223 events. 1243/2223 cut-off events. For 97484/97484 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12359 event pairs, 174 based on Foata normal form. 3/2108 useless extension candidates. Maximal degree in co-relation 11707. Up to 1250 conditions per place. [2024-06-27 18:17:45,507 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 143 selfloop transitions, 94 changer transitions 0/245 dead transitions. [2024-06-27 18:17:45,507 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 245 transitions, 2679 flow [2024-06-27 18:17:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:17:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:17:45,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 18:17:45,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-27 18:17:45,508 INFO L175 Difference]: Start difference. First operand has 230 places, 196 transitions, 1767 flow. Second operand 12 states and 212 transitions. [2024-06-27 18:17:45,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 245 transitions, 2679 flow [2024-06-27 18:17:45,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 245 transitions, 2579 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:45,749 INFO L231 Difference]: Finished difference. Result has 234 places, 202 transitions, 1997 flow [2024-06-27 18:17:45,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1667, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1997, PETRI_PLACES=234, PETRI_TRANSITIONS=202} [2024-06-27 18:17:45,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2024-06-27 18:17:45,749 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 202 transitions, 1997 flow [2024-06-27 18:17:45,749 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 18:17:45,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:45,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:45,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:17:45,750 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:45,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:45,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1201176076, now seen corresponding path program 3 times [2024-06-27 18:17:45,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:45,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128018898] [2024-06-27 18:17:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:45,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:46,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:46,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128018898] [2024-06-27 18:17:46,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128018898] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:46,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:46,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:46,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595712665] [2024-06-27 18:17:46,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:46,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:46,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:46,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:46,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:46,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:46,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 202 transitions, 1997 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 18:17:46,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:46,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:46,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:47,231 INFO L124 PetriNetUnfolderBase]: 1241/2220 cut-off events. [2024-06-27 18:17:47,231 INFO L125 PetriNetUnfolderBase]: For 91826/91826 co-relation queries the response was YES. [2024-06-27 18:17:47,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12238 conditions, 2220 events. 1241/2220 cut-off events. For 91826/91826 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12333 event pairs, 211 based on Foata normal form. 1/2103 useless extension candidates. Maximal degree in co-relation 12125. Up to 1744 conditions per place. [2024-06-27 18:17:47,248 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 198 selfloop transitions, 59 changer transitions 0/265 dead transitions. [2024-06-27 18:17:47,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 265 transitions, 2901 flow [2024-06-27 18:17:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:17:47,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-06-27 18:17:47,249 INFO L175 Difference]: Start difference. First operand has 234 places, 202 transitions, 1997 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:17:47,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 265 transitions, 2901 flow [2024-06-27 18:17:47,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 265 transitions, 2695 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 18:17:47,513 INFO L231 Difference]: Finished difference. Result has 241 places, 229 transitions, 2277 flow [2024-06-27 18:17:47,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2277, PETRI_PLACES=241, PETRI_TRANSITIONS=229} [2024-06-27 18:17:47,514 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 199 predicate places. [2024-06-27 18:17:47,514 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 229 transitions, 2277 flow [2024-06-27 18:17:47,514 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 18:17:47,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:47,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:47,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:17:47,514 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:47,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:47,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1029034568, now seen corresponding path program 1 times [2024-06-27 18:17:47,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:47,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945685448] [2024-06-27 18:17:47,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:47,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:48,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:48,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945685448] [2024-06-27 18:17:48,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945685448] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:48,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:48,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:17:48,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603109897] [2024-06-27 18:17:48,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:48,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:17:48,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:17:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:17:48,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:48,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 229 transitions, 2277 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 18:17:48,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:48,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:48,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:49,174 INFO L124 PetriNetUnfolderBase]: 1258/2260 cut-off events. [2024-06-27 18:17:49,174 INFO L125 PetriNetUnfolderBase]: For 96725/96725 co-relation queries the response was YES. [2024-06-27 18:17:49,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12733 conditions, 2260 events. 1258/2260 cut-off events. For 96725/96725 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 12669 event pairs, 202 based on Foata normal form. 2/2142 useless extension candidates. Maximal degree in co-relation 12614. Up to 1843 conditions per place. [2024-06-27 18:17:49,193 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 207 selfloop transitions, 45 changer transitions 0/260 dead transitions. [2024-06-27 18:17:49,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 260 transitions, 2896 flow [2024-06-27 18:17:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:17:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:17:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:17:49,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4394736842105263 [2024-06-27 18:17:49,194 INFO L175 Difference]: Start difference. First operand has 241 places, 229 transitions, 2277 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:17:49,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 260 transitions, 2896 flow [2024-06-27 18:17:49,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 260 transitions, 2767 flow, removed 46 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:49,516 INFO L231 Difference]: Finished difference. Result has 245 places, 231 transitions, 2280 flow [2024-06-27 18:17:49,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2280, PETRI_PLACES=245, PETRI_TRANSITIONS=231} [2024-06-27 18:17:49,516 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 203 predicate places. [2024-06-27 18:17:49,516 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 231 transitions, 2280 flow [2024-06-27 18:17:49,516 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 18:17:49,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:49,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:49,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:17:49,517 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:49,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:49,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1619479222, now seen corresponding path program 4 times [2024-06-27 18:17:49,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:49,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732874359] [2024-06-27 18:17:49,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:49,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:50,646 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 18:17:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732874359] [2024-06-27 18:17:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732874359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:50,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:50,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:50,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887350311] [2024-06-27 18:17:50,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:50,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:50,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:50,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:50,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:50,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:50,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 231 transitions, 2280 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 18:17:50,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:50,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:50,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:51,274 INFO L124 PetriNetUnfolderBase]: 1264/2269 cut-off events. [2024-06-27 18:17:51,274 INFO L125 PetriNetUnfolderBase]: For 93280/93280 co-relation queries the response was YES. [2024-06-27 18:17:51,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12288 conditions, 2269 events. 1264/2269 cut-off events. For 93280/93280 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12762 event pairs, 202 based on Foata normal form. 1/2148 useless extension candidates. Maximal degree in co-relation 12169. Up to 1784 conditions per place. [2024-06-27 18:17:51,292 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 203 selfloop transitions, 58 changer transitions 0/269 dead transitions. [2024-06-27 18:17:51,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 269 transitions, 2972 flow [2024-06-27 18:17:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:51,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:51,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:17:51,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-27 18:17:51,293 INFO L175 Difference]: Start difference. First operand has 245 places, 231 transitions, 2280 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:17:51,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 269 transitions, 2972 flow [2024-06-27 18:17:51,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 269 transitions, 2874 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 18:17:51,579 INFO L231 Difference]: Finished difference. Result has 250 places, 237 transitions, 2368 flow [2024-06-27 18:17:51,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2182, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2368, PETRI_PLACES=250, PETRI_TRANSITIONS=237} [2024-06-27 18:17:51,580 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2024-06-27 18:17:51,580 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 237 transitions, 2368 flow [2024-06-27 18:17:51,580 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 18:17:51,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:51,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:51,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:17:51,581 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:51,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1625908312, now seen corresponding path program 5 times [2024-06-27 18:17:51,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:51,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323555485] [2024-06-27 18:17:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:51,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:52,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323555485] [2024-06-27 18:17:52,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323555485] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:52,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:52,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:52,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28107379] [2024-06-27 18:17:52,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:52,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:52,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:52,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:52,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:52,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:52,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 237 transitions, 2368 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 18:17:52,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:52,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:52,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:53,464 INFO L124 PetriNetUnfolderBase]: 1270/2278 cut-off events. [2024-06-27 18:17:53,464 INFO L125 PetriNetUnfolderBase]: For 95463/95463 co-relation queries the response was YES. [2024-06-27 18:17:53,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12444 conditions, 2278 events. 1270/2278 cut-off events. For 95463/95463 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 12825 event pairs, 205 based on Foata normal form. 1/2156 useless extension candidates. Maximal degree in co-relation 12323. Up to 1793 conditions per place. [2024-06-27 18:17:53,484 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 207 selfloop transitions, 58 changer transitions 0/273 dead transitions. [2024-06-27 18:17:53,484 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 273 transitions, 3064 flow [2024-06-27 18:17:53,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:53,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:17:53,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-06-27 18:17:53,485 INFO L175 Difference]: Start difference. First operand has 250 places, 237 transitions, 2368 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:17:53,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 273 transitions, 3064 flow [2024-06-27 18:17:53,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 273 transitions, 2963 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:53,829 INFO L231 Difference]: Finished difference. Result has 256 places, 242 transitions, 2460 flow [2024-06-27 18:17:53,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2460, PETRI_PLACES=256, PETRI_TRANSITIONS=242} [2024-06-27 18:17:53,830 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2024-06-27 18:17:53,830 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 242 transitions, 2460 flow [2024-06-27 18:17:53,830 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 18:17:53,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:53,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:53,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:17:53,830 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:53,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash -707855808, now seen corresponding path program 5 times [2024-06-27 18:17:53,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:53,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381153968] [2024-06-27 18:17:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:53,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:54,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:54,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:54,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381153968] [2024-06-27 18:17:54,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381153968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:54,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:54,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:54,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598502896] [2024-06-27 18:17:54,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:54,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:54,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:54,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:54,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:54,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:54,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 242 transitions, 2460 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 18:17:54,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:54,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:54,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:55,342 INFO L124 PetriNetUnfolderBase]: 1287/2318 cut-off events. [2024-06-27 18:17:55,342 INFO L125 PetriNetUnfolderBase]: For 102333/102333 co-relation queries the response was YES. [2024-06-27 18:17:55,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12773 conditions, 2318 events. 1287/2318 cut-off events. For 102333/102333 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13096 event pairs, 221 based on Foata normal form. 2/2195 useless extension candidates. Maximal degree in co-relation 12651. Up to 1978 conditions per place. [2024-06-27 18:17:55,360 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 226 selfloop transitions, 37 changer transitions 0/271 dead transitions. [2024-06-27 18:17:55,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 271 transitions, 3090 flow [2024-06-27 18:17:55,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:55,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:17:55,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-27 18:17:55,361 INFO L175 Difference]: Start difference. First operand has 256 places, 242 transitions, 2460 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:17:55,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 271 transitions, 3090 flow [2024-06-27 18:17:55,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 271 transitions, 2966 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:17:55,714 INFO L231 Difference]: Finished difference. Result has 261 places, 243 transitions, 2444 flow [2024-06-27 18:17:55,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2336, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2444, PETRI_PLACES=261, PETRI_TRANSITIONS=243} [2024-06-27 18:17:55,714 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 219 predicate places. [2024-06-27 18:17:55,715 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 243 transitions, 2444 flow [2024-06-27 18:17:55,715 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 18:17:55,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:55,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:55,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:17:55,715 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:55,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:55,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1625912962, now seen corresponding path program 6 times [2024-06-27 18:17:55,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:55,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879087501] [2024-06-27 18:17:55,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:55,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:56,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:56,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879087501] [2024-06-27 18:17:56,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879087501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:56,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:56,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:56,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859764186] [2024-06-27 18:17:56,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:56,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:56,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:56,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:56,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:56,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:56,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 243 transitions, 2444 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 18:17:56,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:56,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:56,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:57,381 INFO L124 PetriNetUnfolderBase]: 1331/2383 cut-off events. [2024-06-27 18:17:57,382 INFO L125 PetriNetUnfolderBase]: For 119728/119728 co-relation queries the response was YES. [2024-06-27 18:17:57,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13565 conditions, 2383 events. 1331/2383 cut-off events. For 119728/119728 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13498 event pairs, 199 based on Foata normal form. 3/2252 useless extension candidates. Maximal degree in co-relation 13442. Up to 1379 conditions per place. [2024-06-27 18:17:57,403 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 166 selfloop transitions, 110 changer transitions 0/284 dead transitions. [2024-06-27 18:17:57,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 284 transitions, 3400 flow [2024-06-27 18:17:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:17:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:17:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-27 18:17:57,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 18:17:57,405 INFO L175 Difference]: Start difference. First operand has 261 places, 243 transitions, 2444 flow. Second operand 12 states and 210 transitions. [2024-06-27 18:17:57,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 284 transitions, 3400 flow [2024-06-27 18:17:57,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 284 transitions, 3302 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:17:57,809 INFO L231 Difference]: Finished difference. Result has 264 places, 249 transitions, 2726 flow [2024-06-27 18:17:57,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2726, PETRI_PLACES=264, PETRI_TRANSITIONS=249} [2024-06-27 18:17:57,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 222 predicate places. [2024-06-27 18:17:57,810 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 249 transitions, 2726 flow [2024-06-27 18:17:57,810 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 18:17:57,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:17:57,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:17:57,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:17:57,811 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:17:57,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:17:57,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1625735332, now seen corresponding path program 7 times [2024-06-27 18:17:57,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:17:57,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731767453] [2024-06-27 18:17:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:17:57,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:17:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:17:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:17:58,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:17:58,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731767453] [2024-06-27 18:17:58,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731767453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:17:58,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:17:58,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:17:58,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161041748] [2024-06-27 18:17:58,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:17:58,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:17:58,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:17:58,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:17:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:17:59,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:17:59,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 249 transitions, 2726 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 18:17:59,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:17:59,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:17:59,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:17:59,651 INFO L124 PetriNetUnfolderBase]: 1329/2380 cut-off events. [2024-06-27 18:17:59,651 INFO L125 PetriNetUnfolderBase]: For 111832/111832 co-relation queries the response was YES. [2024-06-27 18:17:59,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13711 conditions, 2380 events. 1329/2380 cut-off events. For 111832/111832 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13495 event pairs, 209 based on Foata normal form. 1/2247 useless extension candidates. Maximal degree in co-relation 13587. Up to 1886 conditions per place. [2024-06-27 18:17:59,672 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 216 selfloop transitions, 57 changer transitions 0/281 dead transitions. [2024-06-27 18:17:59,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 281 transitions, 3407 flow [2024-06-27 18:17:59,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:17:59,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:17:59,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:17:59,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-06-27 18:17:59,673 INFO L175 Difference]: Start difference. First operand has 264 places, 249 transitions, 2726 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:17:59,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 281 transitions, 3407 flow [2024-06-27 18:18:00,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 281 transitions, 3209 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:00,068 INFO L231 Difference]: Finished difference. Result has 267 places, 250 transitions, 2677 flow [2024-06-27 18:18:00,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2677, PETRI_PLACES=267, PETRI_TRANSITIONS=250} [2024-06-27 18:18:00,069 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 225 predicate places. [2024-06-27 18:18:00,069 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 250 transitions, 2677 flow [2024-06-27 18:18:00,069 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 18:18:00,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:00,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:18:00,069 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:00,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1156192860, now seen corresponding path program 8 times [2024-06-27 18:18:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:00,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279375191] [2024-06-27 18:18:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:00,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279375191] [2024-06-27 18:18:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279375191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:01,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:01,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:01,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442464104] [2024-06-27 18:18:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:01,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:01,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 250 transitions, 2677 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 18:18:01,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:01,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:02,029 INFO L124 PetriNetUnfolderBase]: 1335/2389 cut-off events. [2024-06-27 18:18:02,030 INFO L125 PetriNetUnfolderBase]: For 113166/113166 co-relation queries the response was YES. [2024-06-27 18:18:02,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13770 conditions, 2389 events. 1335/2389 cut-off events. For 113166/113166 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 13563 event pairs, 203 based on Foata normal form. 1/2255 useless extension candidates. Maximal degree in co-relation 13644. Up to 1895 conditions per place. [2024-06-27 18:18:02,050 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 212 selfloop transitions, 65 changer transitions 0/285 dead transitions. [2024-06-27 18:18:02,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 285 transitions, 3414 flow [2024-06-27 18:18:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:18:02,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-27 18:18:02,051 INFO L175 Difference]: Start difference. First operand has 267 places, 250 transitions, 2677 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:18:02,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 285 transitions, 3414 flow [2024-06-27 18:18:02,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 285 transitions, 3249 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:02,484 INFO L231 Difference]: Finished difference. Result has 270 places, 258 transitions, 2749 flow [2024-06-27 18:18:02,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2522, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2749, PETRI_PLACES=270, PETRI_TRANSITIONS=258} [2024-06-27 18:18:02,484 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2024-06-27 18:18:02,484 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 258 transitions, 2749 flow [2024-06-27 18:18:02,484 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 18:18:02,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:02,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:02,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:18:02,485 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:02,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1979006590, now seen corresponding path program 2 times [2024-06-27 18:18:02,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:02,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982065619] [2024-06-27 18:18:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:02,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:02,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:03,839 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 18:18:03,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:03,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982065619] [2024-06-27 18:18:03,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982065619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:03,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:03,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:03,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331241240] [2024-06-27 18:18:03,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:03,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:03,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:03,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:03,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:03,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:03,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 258 transitions, 2749 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 18:18:03,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:03,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:03,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:04,711 INFO L124 PetriNetUnfolderBase]: 1363/2446 cut-off events. [2024-06-27 18:18:04,712 INFO L125 PetriNetUnfolderBase]: For 119470/119470 co-relation queries the response was YES. [2024-06-27 18:18:04,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14057 conditions, 2446 events. 1363/2446 cut-off events. For 119470/119470 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 13955 event pairs, 205 based on Foata normal form. 2/2310 useless extension candidates. Maximal degree in co-relation 13929. Up to 1976 conditions per place. [2024-06-27 18:18:04,728 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 233 selfloop transitions, 47 changer transitions 0/288 dead transitions. [2024-06-27 18:18:04,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 288 transitions, 3423 flow [2024-06-27 18:18:04,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:04,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:04,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:18:04,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-27 18:18:04,729 INFO L175 Difference]: Start difference. First operand has 270 places, 258 transitions, 2749 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:18:04,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 288 transitions, 3423 flow [2024-06-27 18:18:05,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 288 transitions, 3317 flow, removed 19 selfloop flow, removed 4 redundant places. [2024-06-27 18:18:05,111 INFO L231 Difference]: Finished difference. Result has 276 places, 261 transitions, 2779 flow [2024-06-27 18:18:05,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2643, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2779, PETRI_PLACES=276, PETRI_TRANSITIONS=261} [2024-06-27 18:18:05,111 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 234 predicate places. [2024-06-27 18:18:05,111 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 261 transitions, 2779 flow [2024-06-27 18:18:05,111 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 18:18:05,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:05,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:05,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:18:05,112 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:05,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:05,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1524992474, now seen corresponding path program 3 times [2024-06-27 18:18:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557436180] [2024-06-27 18:18:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:05,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:06,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:06,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557436180] [2024-06-27 18:18:06,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557436180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:06,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:06,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:06,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274932815] [2024-06-27 18:18:06,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:06,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:06,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:06,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:06,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:06,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:06,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 261 transitions, 2779 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 18:18:06,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:06,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:06,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:06,859 INFO L124 PetriNetUnfolderBase]: 1380/2486 cut-off events. [2024-06-27 18:18:06,859 INFO L125 PetriNetUnfolderBase]: For 122705/122705 co-relation queries the response was YES. [2024-06-27 18:18:06,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14230 conditions, 2486 events. 1380/2486 cut-off events. For 122705/122705 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14323 event pairs, 212 based on Foata normal form. 2/2347 useless extension candidates. Maximal degree in co-relation 14101. Up to 2035 conditions per place. [2024-06-27 18:18:06,880 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 239 selfloop transitions, 42 changer transitions 0/289 dead transitions. [2024-06-27 18:18:06,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 289 transitions, 3435 flow [2024-06-27 18:18:06,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:06,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:06,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:18:06,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-27 18:18:06,881 INFO L175 Difference]: Start difference. First operand has 276 places, 261 transitions, 2779 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:18:06,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 289 transitions, 3435 flow [2024-06-27 18:18:07,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 289 transitions, 3331 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:07,274 INFO L231 Difference]: Finished difference. Result has 279 places, 262 transitions, 2781 flow [2024-06-27 18:18:07,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2781, PETRI_PLACES=279, PETRI_TRANSITIONS=262} [2024-06-27 18:18:07,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2024-06-27 18:18:07,274 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 262 transitions, 2781 flow [2024-06-27 18:18:07,275 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 18:18:07,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:07,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:07,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:18:07,275 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:07,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1524746210, now seen corresponding path program 9 times [2024-06-27 18:18:07,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:07,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556733238] [2024-06-27 18:18:07,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:07,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:08,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:08,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:08,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556733238] [2024-06-27 18:18:08,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556733238] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:08,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:08,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:08,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462647740] [2024-06-27 18:18:08,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:08,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:08,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:08,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:08,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:08,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:08,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 262 transitions, 2781 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 18:18:08,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:08,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:08,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:08,837 INFO L124 PetriNetUnfolderBase]: 1386/2495 cut-off events. [2024-06-27 18:18:08,838 INFO L125 PetriNetUnfolderBase]: For 121664/121664 co-relation queries the response was YES. [2024-06-27 18:18:08,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14288 conditions, 2495 events. 1386/2495 cut-off events. For 121664/121664 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14396 event pairs, 212 based on Foata normal form. 1/2353 useless extension candidates. Maximal degree in co-relation 14158. Up to 1983 conditions per place. [2024-06-27 18:18:08,862 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 224 selfloop transitions, 61 changer transitions 0/293 dead transitions. [2024-06-27 18:18:08,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 293 transitions, 3505 flow [2024-06-27 18:18:08,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:08,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:08,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:18:08,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42822966507177035 [2024-06-27 18:18:08,863 INFO L175 Difference]: Start difference. First operand has 279 places, 262 transitions, 2781 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:18:08,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 293 transitions, 3505 flow [2024-06-27 18:18:09,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 293 transitions, 3409 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:09,274 INFO L231 Difference]: Finished difference. Result has 284 places, 267 transitions, 2892 flow [2024-06-27 18:18:09,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2685, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2892, PETRI_PLACES=284, PETRI_TRANSITIONS=267} [2024-06-27 18:18:09,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 242 predicate places. [2024-06-27 18:18:09,275 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 267 transitions, 2892 flow [2024-06-27 18:18:09,275 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 18:18:09,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:09,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:09,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:18:09,275 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:09,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:09,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1754969384, now seen corresponding path program 4 times [2024-06-27 18:18:09,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:09,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471132234] [2024-06-27 18:18:09,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:09,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:10,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:10,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471132234] [2024-06-27 18:18:10,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471132234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:10,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:10,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:10,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768099138] [2024-06-27 18:18:10,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:10,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:10,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:10,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:10,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:10,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:10,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 267 transitions, 2892 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 18:18:10,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:10,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:10,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:11,187 INFO L124 PetriNetUnfolderBase]: 1403/2534 cut-off events. [2024-06-27 18:18:11,188 INFO L125 PetriNetUnfolderBase]: For 128084/128084 co-relation queries the response was YES. [2024-06-27 18:18:11,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14523 conditions, 2534 events. 1403/2534 cut-off events. For 128084/128084 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14681 event pairs, 212 based on Foata normal form. 2/2391 useless extension candidates. Maximal degree in co-relation 14391. Up to 2075 conditions per place. [2024-06-27 18:18:11,209 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 241 selfloop transitions, 45 changer transitions 0/294 dead transitions. [2024-06-27 18:18:11,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 294 transitions, 3556 flow [2024-06-27 18:18:11,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:18:11,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2024-06-27 18:18:11,210 INFO L175 Difference]: Start difference. First operand has 284 places, 267 transitions, 2892 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:18:11,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 294 transitions, 3556 flow [2024-06-27 18:18:11,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 294 transitions, 3376 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:11,639 INFO L231 Difference]: Finished difference. Result has 287 places, 268 transitions, 2826 flow [2024-06-27 18:18:11,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2826, PETRI_PLACES=287, PETRI_TRANSITIONS=268} [2024-06-27 18:18:11,640 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 245 predicate places. [2024-06-27 18:18:11,640 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 268 transitions, 2826 flow [2024-06-27 18:18:11,640 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 18:18:11,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:11,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:11,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:18:11,640 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:11,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1754979614, now seen corresponding path program 5 times [2024-06-27 18:18:11,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:11,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190550835] [2024-06-27 18:18:11,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:11,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:12,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:12,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190550835] [2024-06-27 18:18:12,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190550835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:12,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:12,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:12,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367660766] [2024-06-27 18:18:12,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:12,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:12,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:12,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:12,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 268 transitions, 2826 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 18:18:12,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:12,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:12,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:13,473 INFO L124 PetriNetUnfolderBase]: 1420/2566 cut-off events. [2024-06-27 18:18:13,473 INFO L125 PetriNetUnfolderBase]: For 131149/131149 co-relation queries the response was YES. [2024-06-27 18:18:13,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14650 conditions, 2566 events. 1420/2566 cut-off events. For 131149/131149 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14955 event pairs, 212 based on Foata normal form. 2/2422 useless extension candidates. Maximal degree in co-relation 14517. Up to 1991 conditions per place. [2024-06-27 18:18:13,498 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 241 selfloop transitions, 49 changer transitions 0/298 dead transitions. [2024-06-27 18:18:13,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 298 transitions, 3514 flow [2024-06-27 18:18:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:13,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:18:13,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421052631578947 [2024-06-27 18:18:13,499 INFO L175 Difference]: Start difference. First operand has 287 places, 268 transitions, 2826 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:18:13,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 298 transitions, 3514 flow [2024-06-27 18:18:13,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 298 transitions, 3405 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:13,961 INFO L231 Difference]: Finished difference. Result has 289 places, 269 transitions, 2841 flow [2024-06-27 18:18:13,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2841, PETRI_PLACES=289, PETRI_TRANSITIONS=269} [2024-06-27 18:18:13,962 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 247 predicate places. [2024-06-27 18:18:13,962 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 269 transitions, 2841 flow [2024-06-27 18:18:13,962 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 18:18:13,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:13,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:13,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:18:13,963 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:13,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:13,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1518490100, now seen corresponding path program 10 times [2024-06-27 18:18:13,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:13,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234714584] [2024-06-27 18:18:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:13,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:14,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:14,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:14,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234714584] [2024-06-27 18:18:14,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234714584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:14,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:14,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:14,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587747618] [2024-06-27 18:18:14,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:14,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:14,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:14,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:14,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:14,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:14,973 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 269 transitions, 2841 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 18:18:14,973 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:14,973 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:14,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:15,560 INFO L124 PetriNetUnfolderBase]: 1426/2583 cut-off events. [2024-06-27 18:18:15,561 INFO L125 PetriNetUnfolderBase]: For 130363/130363 co-relation queries the response was YES. [2024-06-27 18:18:15,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14773 conditions, 2583 events. 1426/2583 cut-off events. For 130363/130363 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 15124 event pairs, 234 based on Foata normal form. 1/2434 useless extension candidates. Maximal degree in co-relation 14639. Up to 2054 conditions per place. [2024-06-27 18:18:15,586 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 227 selfloop transitions, 63 changer transitions 0/298 dead transitions. [2024-06-27 18:18:15,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 298 transitions, 3565 flow [2024-06-27 18:18:15,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:15,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:15,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:18:15,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-27 18:18:15,587 INFO L175 Difference]: Start difference. First operand has 289 places, 269 transitions, 2841 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:18:15,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 298 transitions, 3565 flow [2024-06-27 18:18:16,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 298 transitions, 3451 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:16,061 INFO L231 Difference]: Finished difference. Result has 293 places, 273 transitions, 2937 flow [2024-06-27 18:18:16,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2727, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2937, PETRI_PLACES=293, PETRI_TRANSITIONS=273} [2024-06-27 18:18:16,061 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 251 predicate places. [2024-06-27 18:18:16,061 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 273 transitions, 2937 flow [2024-06-27 18:18:16,061 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 18:18:16,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:16,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:16,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:18:16,062 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:16,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:16,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1518312346, now seen corresponding path program 6 times [2024-06-27 18:18:16,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:16,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394189321] [2024-06-27 18:18:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:16,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:17,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:17,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:17,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394189321] [2024-06-27 18:18:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394189321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:17,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801013736] [2024-06-27 18:18:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:17,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:17,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:17,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:17,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:17,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 273 transitions, 2937 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 18:18:17,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:17,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:17,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:17,682 INFO L124 PetriNetUnfolderBase]: 1443/2623 cut-off events. [2024-06-27 18:18:17,682 INFO L125 PetriNetUnfolderBase]: For 138235/138235 co-relation queries the response was YES. [2024-06-27 18:18:17,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15015 conditions, 2623 events. 1443/2623 cut-off events. For 138235/138235 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15467 event pairs, 247 based on Foata normal form. 2/2473 useless extension candidates. Maximal degree in co-relation 14879. Up to 2239 conditions per place. [2024-06-27 18:18:17,705 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 255 selfloop transitions, 36 changer transitions 0/299 dead transitions. [2024-06-27 18:18:17,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 299 transitions, 3615 flow [2024-06-27 18:18:17,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:17,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:18:17,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41626794258373206 [2024-06-27 18:18:17,706 INFO L175 Difference]: Start difference. First operand has 293 places, 273 transitions, 2937 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:18:17,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 299 transitions, 3615 flow [2024-06-27 18:18:18,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 299 transitions, 3445 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:18,133 INFO L231 Difference]: Finished difference. Result has 296 places, 274 transitions, 2875 flow [2024-06-27 18:18:18,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2767, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2875, PETRI_PLACES=296, PETRI_TRANSITIONS=274} [2024-06-27 18:18:18,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2024-06-27 18:18:18,133 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 274 transitions, 2875 flow [2024-06-27 18:18:18,134 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 18:18:18,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:18,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:18,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:18:18,134 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:18,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1518312470, now seen corresponding path program 11 times [2024-06-27 18:18:18,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:18,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533688335] [2024-06-27 18:18:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:18,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:19,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:19,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:19,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533688335] [2024-06-27 18:18:19,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533688335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:19,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:19,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740342569] [2024-06-27 18:18:19,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:19,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:19,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:19,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:19,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:19,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 274 transitions, 2875 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 18:18:19,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:19,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:19,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:19,899 INFO L124 PetriNetUnfolderBase]: 1479/2676 cut-off events. [2024-06-27 18:18:19,899 INFO L125 PetriNetUnfolderBase]: For 155262/155262 co-relation queries the response was YES. [2024-06-27 18:18:19,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15704 conditions, 2676 events. 1479/2676 cut-off events. For 155262/155262 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 15766 event pairs, 214 based on Foata normal form. 3/2519 useless extension candidates. Maximal degree in co-relation 15567. Up to 1607 conditions per place. [2024-06-27 18:18:19,924 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 192 selfloop transitions, 112 changer transitions 0/312 dead transitions. [2024-06-27 18:18:19,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 312 transitions, 3917 flow [2024-06-27 18:18:19,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:18:19,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:18:19,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-27 18:18:19,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 18:18:19,926 INFO L175 Difference]: Start difference. First operand has 296 places, 274 transitions, 2875 flow. Second operand 12 states and 208 transitions. [2024-06-27 18:18:19,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 312 transitions, 3917 flow [2024-06-27 18:18:20,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 312 transitions, 3819 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:18:20,444 INFO L231 Difference]: Finished difference. Result has 299 places, 279 transitions, 3171 flow [2024-06-27 18:18:20,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2777, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3171, PETRI_PLACES=299, PETRI_TRANSITIONS=279} [2024-06-27 18:18:20,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 257 predicate places. [2024-06-27 18:18:20,445 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 279 transitions, 3171 flow [2024-06-27 18:18:20,445 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 18:18:20,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:20,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:20,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:18:20,446 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:20,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:20,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1866781174, now seen corresponding path program 12 times [2024-06-27 18:18:20,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:20,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236105777] [2024-06-27 18:18:20,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:20,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:21,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:21,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236105777] [2024-06-27 18:18:21,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236105777] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:21,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:21,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:21,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688861664] [2024-06-27 18:18:21,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:21,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:21,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:21,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:21,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 279 transitions, 3171 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 18:18:21,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:21,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:21,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:22,452 INFO L124 PetriNetUnfolderBase]: 1485/2684 cut-off events. [2024-06-27 18:18:22,453 INFO L125 PetriNetUnfolderBase]: For 150029/150029 co-relation queries the response was YES. [2024-06-27 18:18:22,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16068 conditions, 2684 events. 1485/2684 cut-off events. For 150029/150029 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 15843 event pairs, 225 based on Foata normal form. 1/2524 useless extension candidates. Maximal degree in co-relation 15930. Up to 2341 conditions per place. [2024-06-27 18:18:22,476 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 267 selfloop transitions, 32 changer transitions 0/307 dead transitions. [2024-06-27 18:18:22,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 307 transitions, 3925 flow [2024-06-27 18:18:22,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 18:18:22,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2024-06-27 18:18:22,477 INFO L175 Difference]: Start difference. First operand has 299 places, 279 transitions, 3171 flow. Second operand 11 states and 167 transitions. [2024-06-27 18:18:22,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 307 transitions, 3925 flow [2024-06-27 18:18:22,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 307 transitions, 3708 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:22,973 INFO L231 Difference]: Finished difference. Result has 303 places, 286 transitions, 3129 flow [2024-06-27 18:18:22,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2954, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3129, PETRI_PLACES=303, PETRI_TRANSITIONS=286} [2024-06-27 18:18:22,974 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 261 predicate places. [2024-06-27 18:18:22,974 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 286 transitions, 3129 flow [2024-06-27 18:18:22,974 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 18:18:22,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:22,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:22,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:18:22,974 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:22,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:22,974 INFO L85 PathProgramCache]: Analyzing trace with hash 695461304, now seen corresponding path program 6 times [2024-06-27 18:18:22,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:22,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792985290] [2024-06-27 18:18:22,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:22,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:23,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:23,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792985290] [2024-06-27 18:18:23,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792985290] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:23,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:23,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:23,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164332892] [2024-06-27 18:18:23,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:23,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:23,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:23,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:23,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:24,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:24,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 286 transitions, 3129 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 18:18:24,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:24,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:24,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:24,849 INFO L124 PetriNetUnfolderBase]: 1502/2724 cut-off events. [2024-06-27 18:18:24,849 INFO L125 PetriNetUnfolderBase]: For 156011/156011 co-relation queries the response was YES. [2024-06-27 18:18:24,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16088 conditions, 2724 events. 1502/2724 cut-off events. For 156011/156011 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16202 event pairs, 231 based on Foata normal form. 2/2563 useless extension candidates. Maximal degree in co-relation 15947. Up to 2321 conditions per place. [2024-06-27 18:18:24,873 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 269 selfloop transitions, 33 changer transitions 0/310 dead transitions. [2024-06-27 18:18:24,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 310 transitions, 3819 flow [2024-06-27 18:18:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:24,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:24,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:18:24,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-27 18:18:24,874 INFO L175 Difference]: Start difference. First operand has 303 places, 286 transitions, 3129 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:18:24,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 310 transitions, 3819 flow [2024-06-27 18:18:25,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 310 transitions, 3671 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:25,706 INFO L231 Difference]: Finished difference. Result has 306 places, 287 transitions, 3075 flow [2024-06-27 18:18:25,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2981, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3075, PETRI_PLACES=306, PETRI_TRANSITIONS=287} [2024-06-27 18:18:25,707 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 264 predicate places. [2024-06-27 18:18:25,707 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 287 transitions, 3075 flow [2024-06-27 18:18:25,707 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 18:18:25,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:25,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:25,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:18:25,708 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:25,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:25,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1644435328, now seen corresponding path program 7 times [2024-06-27 18:18:25,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:25,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345571312] [2024-06-27 18:18:25,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:25,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:26,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:26,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:26,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345571312] [2024-06-27 18:18:26,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345571312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:26,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:26,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:26,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039487360] [2024-06-27 18:18:26,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:26,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:26,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:26,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:26,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:26,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:26,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 287 transitions, 3075 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 18:18:26,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:26,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:26,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:27,615 INFO L124 PetriNetUnfolderBase]: 1530/2780 cut-off events. [2024-06-27 18:18:27,615 INFO L125 PetriNetUnfolderBase]: For 159489/159489 co-relation queries the response was YES. [2024-06-27 18:18:27,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16412 conditions, 2780 events. 1530/2780 cut-off events. For 159489/159489 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 16634 event pairs, 252 based on Foata normal form. 2/2616 useless extension candidates. Maximal degree in co-relation 16270. Up to 2390 conditions per place. [2024-06-27 18:18:27,640 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 277 selfloop transitions, 29 changer transitions 0/314 dead transitions. [2024-06-27 18:18:27,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 314 transitions, 3808 flow [2024-06-27 18:18:27,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:27,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:27,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:18:27,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41842105263157897 [2024-06-27 18:18:27,641 INFO L175 Difference]: Start difference. First operand has 306 places, 287 transitions, 3075 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:18:27,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 314 transitions, 3808 flow [2024-06-27 18:18:28,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 314 transitions, 3720 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:28,281 INFO L231 Difference]: Finished difference. Result has 310 places, 291 transitions, 3117 flow [2024-06-27 18:18:28,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3117, PETRI_PLACES=310, PETRI_TRANSITIONS=291} [2024-06-27 18:18:28,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 268 predicate places. [2024-06-27 18:18:28,282 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 291 transitions, 3117 flow [2024-06-27 18:18:28,282 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 18:18:28,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:28,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:28,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:18:28,282 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:28,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1154206872, now seen corresponding path program 8 times [2024-06-27 18:18:28,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:28,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969643951] [2024-06-27 18:18:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:28,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:29,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:29,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969643951] [2024-06-27 18:18:29,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969643951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:29,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:29,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:29,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768265956] [2024-06-27 18:18:29,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:29,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:29,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:29,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:29,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:29,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:29,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 291 transitions, 3117 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 18:18:29,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:29,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:29,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:30,114 INFO L124 PetriNetUnfolderBase]: 1551/2820 cut-off events. [2024-06-27 18:18:30,115 INFO L125 PetriNetUnfolderBase]: For 163028/163028 co-relation queries the response was YES. [2024-06-27 18:18:30,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16619 conditions, 2820 events. 1551/2820 cut-off events. For 163028/163028 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 16969 event pairs, 243 based on Foata normal form. 2/2654 useless extension candidates. Maximal degree in co-relation 16475. Up to 2471 conditions per place. [2024-06-27 18:18:30,141 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 293 selfloop transitions, 17 changer transitions 0/318 dead transitions. [2024-06-27 18:18:30,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 318 transitions, 3853 flow [2024-06-27 18:18:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:18:30,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105263157894737 [2024-06-27 18:18:30,143 INFO L175 Difference]: Start difference. First operand has 310 places, 291 transitions, 3117 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:18:30,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 318 transitions, 3853 flow [2024-06-27 18:18:30,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 318 transitions, 3790 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:30,819 INFO L231 Difference]: Finished difference. Result has 316 places, 293 transitions, 3146 flow [2024-06-27 18:18:30,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3054, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3146, PETRI_PLACES=316, PETRI_TRANSITIONS=293} [2024-06-27 18:18:30,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 274 predicate places. [2024-06-27 18:18:30,820 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 293 transitions, 3146 flow [2024-06-27 18:18:30,821 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 18:18:30,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:30,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:30,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:18:30,821 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:30,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:30,822 INFO L85 PathProgramCache]: Analyzing trace with hash 352261722, now seen corresponding path program 9 times [2024-06-27 18:18:30,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:30,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651313236] [2024-06-27 18:18:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:30,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:31,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:31,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651313236] [2024-06-27 18:18:31,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651313236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:31,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:31,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:31,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290205398] [2024-06-27 18:18:31,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:31,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:31,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:31,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:31,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:31,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:31,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 293 transitions, 3146 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 18:18:31,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:31,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:31,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:32,725 INFO L124 PetriNetUnfolderBase]: 1568/2867 cut-off events. [2024-06-27 18:18:32,725 INFO L125 PetriNetUnfolderBase]: For 166542/166542 co-relation queries the response was YES. [2024-06-27 18:18:32,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16787 conditions, 2867 events. 1568/2867 cut-off events. For 166542/166542 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17447 event pairs, 279 based on Foata normal form. 2/2697 useless extension candidates. Maximal degree in co-relation 16641. Up to 2517 conditions per place. [2024-06-27 18:18:32,754 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 287 selfloop transitions, 21 changer transitions 0/316 dead transitions. [2024-06-27 18:18:32,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 316 transitions, 3850 flow [2024-06-27 18:18:32,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:32,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 153 transitions. [2024-06-27 18:18:32,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2024-06-27 18:18:32,757 INFO L175 Difference]: Start difference. First operand has 316 places, 293 transitions, 3146 flow. Second operand 10 states and 153 transitions. [2024-06-27 18:18:32,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 316 transitions, 3850 flow [2024-06-27 18:18:33,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 316 transitions, 3782 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 18:18:33,431 INFO L231 Difference]: Finished difference. Result has 319 places, 294 transitions, 3155 flow [2024-06-27 18:18:33,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3078, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3155, PETRI_PLACES=319, PETRI_TRANSITIONS=294} [2024-06-27 18:18:33,432 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2024-06-27 18:18:33,432 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 294 transitions, 3155 flow [2024-06-27 18:18:33,432 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 18:18:33,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:33,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:33,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:18:33,433 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:33,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:33,433 INFO L85 PathProgramCache]: Analyzing trace with hash 307565750, now seen corresponding path program 10 times [2024-06-27 18:18:33,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:33,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930312583] [2024-06-27 18:18:33,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:33,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:34,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:34,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930312583] [2024-06-27 18:18:34,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930312583] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:34,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:34,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:34,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586980784] [2024-06-27 18:18:34,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:34,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:34,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:34,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:34,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:34,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 294 transitions, 3155 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 18:18:34,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:34,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:34,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:35,313 INFO L124 PetriNetUnfolderBase]: 1585/2907 cut-off events. [2024-06-27 18:18:35,314 INFO L125 PetriNetUnfolderBase]: For 170574/170574 co-relation queries the response was YES. [2024-06-27 18:18:35,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16959 conditions, 2907 events. 1585/2907 cut-off events. For 170574/170574 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17792 event pairs, 272 based on Foata normal form. 2/2734 useless extension candidates. Maximal degree in co-relation 16812. Up to 2492 conditions per place. [2024-06-27 18:18:35,344 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 291 selfloop transitions, 21 changer transitions 0/320 dead transitions. [2024-06-27 18:18:35,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 320 transitions, 3883 flow [2024-06-27 18:18:35,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:35,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:35,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:18:35,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-27 18:18:35,345 INFO L175 Difference]: Start difference. First operand has 319 places, 294 transitions, 3155 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:18:35,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 320 transitions, 3883 flow [2024-06-27 18:18:36,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 320 transitions, 3818 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:36,146 INFO L231 Difference]: Finished difference. Result has 321 places, 295 transitions, 3168 flow [2024-06-27 18:18:36,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3168, PETRI_PLACES=321, PETRI_TRANSITIONS=295} [2024-06-27 18:18:36,146 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 279 predicate places. [2024-06-27 18:18:36,147 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 295 transitions, 3168 flow [2024-06-27 18:18:36,147 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 18:18:36,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:36,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:36,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:18:36,147 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:36,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:36,148 INFO L85 PathProgramCache]: Analyzing trace with hash 569240032, now seen corresponding path program 13 times [2024-06-27 18:18:36,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:36,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789528563] [2024-06-27 18:18:36,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:36,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:37,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:37,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:37,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789528563] [2024-06-27 18:18:37,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789528563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:37,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:37,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:37,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118969323] [2024-06-27 18:18:37,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:37,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:37,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:37,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:37,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:37,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:37,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 295 transitions, 3168 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 18:18:37,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:37,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:37,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:38,099 INFO L124 PetriNetUnfolderBase]: 1621/2960 cut-off events. [2024-06-27 18:18:38,099 INFO L125 PetriNetUnfolderBase]: For 189995/189995 co-relation queries the response was YES. [2024-06-27 18:18:38,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17756 conditions, 2960 events. 1621/2960 cut-off events. For 189995/189995 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18115 event pairs, 264 based on Foata normal form. 3/2780 useless extension candidates. Maximal degree in co-relation 17608. Up to 2295 conditions per place. [2024-06-27 18:18:38,133 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 260 selfloop transitions, 64 changer transitions 0/332 dead transitions. [2024-06-27 18:18:38,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 332 transitions, 4304 flow [2024-06-27 18:18:38,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:18:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:18:38,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 194 transitions. [2024-06-27 18:18:38,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42543859649122806 [2024-06-27 18:18:38,134 INFO L175 Difference]: Start difference. First operand has 321 places, 295 transitions, 3168 flow. Second operand 12 states and 194 transitions. [2024-06-27 18:18:38,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 332 transitions, 4304 flow [2024-06-27 18:18:38,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 332 transitions, 4236 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:38,884 INFO L231 Difference]: Finished difference. Result has 325 places, 301 transitions, 3442 flow [2024-06-27 18:18:38,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3442, PETRI_PLACES=325, PETRI_TRANSITIONS=301} [2024-06-27 18:18:38,884 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 283 predicate places. [2024-06-27 18:18:38,885 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 301 transitions, 3442 flow [2024-06-27 18:18:38,885 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 18:18:38,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:38,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:38,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:18:38,886 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:38,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:38,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1881092366, now seen corresponding path program 7 times [2024-06-27 18:18:38,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:38,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379736585] [2024-06-27 18:18:38,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:38,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:39,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379736585] [2024-06-27 18:18:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379736585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:39,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:39,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865866390] [2024-06-27 18:18:39,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:39,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:39,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:39,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:39,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:39,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 301 transitions, 3442 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 18:18:39,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:39,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:39,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:40,650 INFO L124 PetriNetUnfolderBase]: 1618/2955 cut-off events. [2024-06-27 18:18:40,650 INFO L125 PetriNetUnfolderBase]: For 177827/177827 co-relation queries the response was YES. [2024-06-27 18:18:40,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17607 conditions, 2955 events. 1618/2955 cut-off events. For 177827/177827 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 18042 event pairs, 287 based on Foata normal form. 2/2775 useless extension candidates. Maximal degree in co-relation 17458. Up to 2623 conditions per place. [2024-06-27 18:18:40,679 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 297 selfloop transitions, 18 changer transitions 0/323 dead transitions. [2024-06-27 18:18:40,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 323 transitions, 4128 flow [2024-06-27 18:18:40,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 163 transitions. [2024-06-27 18:18:40,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38995215311004783 [2024-06-27 18:18:40,680 INFO L175 Difference]: Start difference. First operand has 325 places, 301 transitions, 3442 flow. Second operand 11 states and 163 transitions. [2024-06-27 18:18:40,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 323 transitions, 4128 flow [2024-06-27 18:18:41,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 323 transitions, 3936 flow, removed 57 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:41,610 INFO L231 Difference]: Finished difference. Result has 328 places, 301 transitions, 3290 flow [2024-06-27 18:18:41,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3290, PETRI_PLACES=328, PETRI_TRANSITIONS=301} [2024-06-27 18:18:41,611 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 286 predicate places. [2024-06-27 18:18:41,611 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 301 transitions, 3290 flow [2024-06-27 18:18:41,611 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 18:18:41,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:41,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:41,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:18:41,612 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:41,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:41,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1880914612, now seen corresponding path program 14 times [2024-06-27 18:18:41,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:41,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037547358] [2024-06-27 18:18:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:41,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:42,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:42,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:42,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037547358] [2024-06-27 18:18:42,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037547358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:42,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:42,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:42,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233539056] [2024-06-27 18:18:42,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:42,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:42,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:42,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:42,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:42,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 301 transitions, 3290 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 18:18:42,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:42,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:42,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:43,633 INFO L124 PetriNetUnfolderBase]: 1624/2964 cut-off events. [2024-06-27 18:18:43,633 INFO L125 PetriNetUnfolderBase]: For 174616/174616 co-relation queries the response was YES. [2024-06-27 18:18:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17335 conditions, 2964 events. 1624/2964 cut-off events. For 174616/174616 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 18148 event pairs, 275 based on Foata normal form. 1/2781 useless extension candidates. Maximal degree in co-relation 17184. Up to 2578 conditions per place. [2024-06-27 18:18:43,658 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 281 selfloop transitions, 36 changer transitions 0/325 dead transitions. [2024-06-27 18:18:43,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 325 transitions, 4045 flow [2024-06-27 18:18:43,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:43,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:43,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 166 transitions. [2024-06-27 18:18:43,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39712918660287083 [2024-06-27 18:18:43,660 INFO L175 Difference]: Start difference. First operand has 328 places, 301 transitions, 3290 flow. Second operand 11 states and 166 transitions. [2024-06-27 18:18:43,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 325 transitions, 4045 flow [2024-06-27 18:18:44,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 325 transitions, 3935 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 18:18:44,370 INFO L231 Difference]: Finished difference. Result has 329 places, 305 transitions, 3337 flow [2024-06-27 18:18:44,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3180, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3337, PETRI_PLACES=329, PETRI_TRANSITIONS=305} [2024-06-27 18:18:44,371 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 287 predicate places. [2024-06-27 18:18:44,371 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 305 transitions, 3337 flow [2024-06-27 18:18:44,371 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 18:18:44,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:44,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:44,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:18:44,371 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:44,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:44,371 INFO L85 PathProgramCache]: Analyzing trace with hash 755939856, now seen corresponding path program 11 times [2024-06-27 18:18:44,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:44,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697296822] [2024-06-27 18:18:44,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:44,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:45,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:45,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:45,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697296822] [2024-06-27 18:18:45,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697296822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:45,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:45,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:45,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263361751] [2024-06-27 18:18:45,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:45,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:45,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:45,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:45,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 305 transitions, 3337 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 18:18:45,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:45,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:45,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:46,152 INFO L124 PetriNetUnfolderBase]: 1652/3013 cut-off events. [2024-06-27 18:18:46,152 INFO L125 PetriNetUnfolderBase]: For 183043/183043 co-relation queries the response was YES. [2024-06-27 18:18:46,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 3013 events. 1652/3013 cut-off events. For 183043/183043 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18501 event pairs, 286 based on Foata normal form. 2/2830 useless extension candidates. Maximal degree in co-relation 17398. Up to 2657 conditions per place. [2024-06-27 18:18:46,185 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 304 selfloop transitions, 19 changer transitions 0/331 dead transitions. [2024-06-27 18:18:46,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 331 transitions, 4103 flow [2024-06-27 18:18:46,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 155 transitions. [2024-06-27 18:18:46,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2024-06-27 18:18:46,186 INFO L175 Difference]: Start difference. First operand has 329 places, 305 transitions, 3337 flow. Second operand 10 states and 155 transitions. [2024-06-27 18:18:46,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 331 transitions, 4103 flow [2024-06-27 18:18:47,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 331 transitions, 3880 flow, removed 27 selfloop flow, removed 12 redundant places. [2024-06-27 18:18:47,188 INFO L231 Difference]: Finished difference. Result has 327 places, 308 transitions, 3214 flow [2024-06-27 18:18:47,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3214, PETRI_PLACES=327, PETRI_TRANSITIONS=308} [2024-06-27 18:18:47,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 285 predicate places. [2024-06-27 18:18:47,189 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 308 transitions, 3214 flow [2024-06-27 18:18:47,189 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 18:18:47,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:47,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:47,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:18:47,190 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:47,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 222592196, now seen corresponding path program 1 times [2024-06-27 18:18:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:47,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193108882] [2024-06-27 18:18:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:47,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:47,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:48,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:48,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:48,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193108882] [2024-06-27 18:18:48,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193108882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:48,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:48,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:48,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657651692] [2024-06-27 18:18:48,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:48,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:48,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:48,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:48,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:48,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 308 transitions, 3214 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 18:18:48,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:48,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:48,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:49,020 INFO L124 PetriNetUnfolderBase]: 1662/3036 cut-off events. [2024-06-27 18:18:49,020 INFO L125 PetriNetUnfolderBase]: For 180736/180736 co-relation queries the response was YES. [2024-06-27 18:18:49,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17241 conditions, 3036 events. 1662/3036 cut-off events. For 180736/180736 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 18646 event pairs, 290 based on Foata normal form. 2/2848 useless extension candidates. Maximal degree in co-relation 17092. Up to 2682 conditions per place. [2024-06-27 18:18:49,053 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 307 selfloop transitions, 19 changer transitions 0/334 dead transitions. [2024-06-27 18:18:49,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 334 transitions, 3978 flow [2024-06-27 18:18:49,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:49,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 164 transitions. [2024-06-27 18:18:49,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923444976076555 [2024-06-27 18:18:49,055 INFO L175 Difference]: Start difference. First operand has 327 places, 308 transitions, 3214 flow. Second operand 11 states and 164 transitions. [2024-06-27 18:18:49,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 334 transitions, 3978 flow [2024-06-27 18:18:49,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 334 transitions, 3905 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:49,836 INFO L231 Difference]: Finished difference. Result has 331 places, 312 transitions, 3253 flow [2024-06-27 18:18:49,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3141, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3253, PETRI_PLACES=331, PETRI_TRANSITIONS=312} [2024-06-27 18:18:49,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 289 predicate places. [2024-06-27 18:18:49,837 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 312 transitions, 3253 flow [2024-06-27 18:18:49,837 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 18:18:49,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:49,837 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 18:18:49,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:18:49,838 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:49,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:49,838 INFO L85 PathProgramCache]: Analyzing trace with hash 917106344, now seen corresponding path program 12 times [2024-06-27 18:18:49,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:49,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200887025] [2024-06-27 18:18:49,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:49,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:50,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200887025] [2024-06-27 18:18:50,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200887025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:50,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:50,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:50,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755701881] [2024-06-27 18:18:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:50,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:50,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:50,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:50,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:50,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:50,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 312 transitions, 3253 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 18:18:50,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:50,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:50,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:51,678 INFO L124 PetriNetUnfolderBase]: 1679/3068 cut-off events. [2024-06-27 18:18:51,679 INFO L125 PetriNetUnfolderBase]: For 184237/184237 co-relation queries the response was YES. [2024-06-27 18:18:51,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17393 conditions, 3068 events. 1679/3068 cut-off events. For 184237/184237 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 18942 event pairs, 298 based on Foata normal form. 2/2880 useless extension candidates. Maximal degree in co-relation 17243. Up to 2607 conditions per place. [2024-06-27 18:18:51,710 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 295 selfloop transitions, 34 changer transitions 0/337 dead transitions. [2024-06-27 18:18:51,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 337 transitions, 4011 flow [2024-06-27 18:18:51,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:51,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:18:51,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-27 18:18:51,712 INFO L175 Difference]: Start difference. First operand has 331 places, 312 transitions, 3253 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:18:51,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 337 transitions, 4011 flow [2024-06-27 18:18:52,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 337 transitions, 3941 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:52,490 INFO L231 Difference]: Finished difference. Result has 333 places, 313 transitions, 3289 flow [2024-06-27 18:18:52,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3183, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3289, PETRI_PLACES=333, PETRI_TRANSITIONS=313} [2024-06-27 18:18:52,490 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 291 predicate places. [2024-06-27 18:18:52,490 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 313 transitions, 3289 flow [2024-06-27 18:18:52,490 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 18:18:52,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:52,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:52,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:18:52,491 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:52,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:52,491 INFO L85 PathProgramCache]: Analyzing trace with hash 755693592, now seen corresponding path program 15 times [2024-06-27 18:18:52,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:52,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827966032] [2024-06-27 18:18:52,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:52,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:53,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:53,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:53,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827966032] [2024-06-27 18:18:53,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827966032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:53,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:53,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:53,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18229681] [2024-06-27 18:18:53,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:53,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:53,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:53,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:53,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:53,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:53,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 313 transitions, 3289 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 18:18:53,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:53,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:53,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:54,430 INFO L124 PetriNetUnfolderBase]: 1685/3084 cut-off events. [2024-06-27 18:18:54,431 INFO L125 PetriNetUnfolderBase]: For 182260/182260 co-relation queries the response was YES. [2024-06-27 18:18:54,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17577 conditions, 3084 events. 1685/3084 cut-off events. For 182260/182260 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19092 event pairs, 309 based on Foata normal form. 1/2891 useless extension candidates. Maximal degree in co-relation 17426. Up to 2751 conditions per place. [2024-06-27 18:18:54,463 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 309 selfloop transitions, 19 changer transitions 0/336 dead transitions. [2024-06-27 18:18:54,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 336 transitions, 4062 flow [2024-06-27 18:18:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:54,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 160 transitions. [2024-06-27 18:18:54,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3827751196172249 [2024-06-27 18:18:54,465 INFO L175 Difference]: Start difference. First operand has 333 places, 313 transitions, 3289 flow. Second operand 11 states and 160 transitions. [2024-06-27 18:18:54,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 336 transitions, 4062 flow [2024-06-27 18:18:55,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 336 transitions, 3959 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 18:18:55,224 INFO L231 Difference]: Finished difference. Result has 337 places, 318 transitions, 3319 flow [2024-06-27 18:18:55,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3186, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3319, PETRI_PLACES=337, PETRI_TRANSITIONS=318} [2024-06-27 18:18:55,225 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 295 predicate places. [2024-06-27 18:18:55,225 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 318 transitions, 3319 flow [2024-06-27 18:18:55,225 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 18:18:55,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:55,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:55,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:18:55,225 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:55,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash 916860080, now seen corresponding path program 16 times [2024-06-27 18:18:55,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:55,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594699943] [2024-06-27 18:18:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:55,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:56,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594699943] [2024-06-27 18:18:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594699943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:56,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:18:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056314013] [2024-06-27 18:18:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:56,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:18:56,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:18:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:18:56,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:56,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 318 transitions, 3319 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 18:18:56,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:56,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:56,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:56,975 INFO L124 PetriNetUnfolderBase]: 1683/3081 cut-off events. [2024-06-27 18:18:56,975 INFO L125 PetriNetUnfolderBase]: For 178032/178032 co-relation queries the response was YES. [2024-06-27 18:18:56,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17214 conditions, 3081 events. 1683/3081 cut-off events. For 178032/178032 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 19051 event pairs, 309 based on Foata normal form. 1/2888 useless extension candidates. Maximal degree in co-relation 17061. Up to 2678 conditions per place. [2024-06-27 18:18:57,006 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 295 selfloop transitions, 36 changer transitions 0/339 dead transitions. [2024-06-27 18:18:57,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 339 transitions, 4072 flow [2024-06-27 18:18:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:18:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:18:57,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 168 transitions. [2024-06-27 18:18:57,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019138755980861 [2024-06-27 18:18:57,007 INFO L175 Difference]: Start difference. First operand has 337 places, 318 transitions, 3319 flow. Second operand 11 states and 168 transitions. [2024-06-27 18:18:57,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 339 transitions, 4072 flow [2024-06-27 18:18:57,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 339 transitions, 4009 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:18:57,797 INFO L231 Difference]: Finished difference. Result has 344 places, 321 transitions, 3393 flow [2024-06-27 18:18:57,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3256, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3393, PETRI_PLACES=344, PETRI_TRANSITIONS=321} [2024-06-27 18:18:57,797 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 302 predicate places. [2024-06-27 18:18:57,797 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 321 transitions, 3393 flow [2024-06-27 18:18:57,797 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 18:18:57,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:18:57,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:18:57,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:18:57,798 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:18:57,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:18:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 925448444, now seen corresponding path program 13 times [2024-06-27 18:18:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:18:57,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460482586] [2024-06-27 18:18:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:18:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:18:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:18:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:18:58,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:18:58,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460482586] [2024-06-27 18:18:58,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460482586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:18:58,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:18:58,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:18:58,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129937196] [2024-06-27 18:18:58,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:18:58,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:18:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:18:58,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:18:58,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:18:58,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:18:58,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 321 transitions, 3393 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 18:18:58,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:18:58,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:18:58,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:18:59,631 INFO L124 PetriNetUnfolderBase]: 1700/3121 cut-off events. [2024-06-27 18:18:59,631 INFO L125 PetriNetUnfolderBase]: For 188570/188570 co-relation queries the response was YES. [2024-06-27 18:18:59,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17592 conditions, 3121 events. 1700/3121 cut-off events. For 188570/188570 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 19421 event pairs, 293 based on Foata normal form. 2/2927 useless extension candidates. Maximal degree in co-relation 17436. Up to 2578 conditions per place. [2024-06-27 18:18:59,666 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 306 selfloop transitions, 34 changer transitions 0/348 dead transitions. [2024-06-27 18:18:59,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 348 transitions, 4185 flow [2024-06-27 18:18:59,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:18:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:18:59,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:18:59,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2024-06-27 18:18:59,667 INFO L175 Difference]: Start difference. First operand has 344 places, 321 transitions, 3393 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:18:59,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 348 transitions, 4185 flow [2024-06-27 18:19:00,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 348 transitions, 4004 flow, removed 28 selfloop flow, removed 12 redundant places. [2024-06-27 18:19:00,538 INFO L231 Difference]: Finished difference. Result has 342 places, 322 transitions, 3320 flow [2024-06-27 18:19:00,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3320, PETRI_PLACES=342, PETRI_TRANSITIONS=322} [2024-06-27 18:19:00,538 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 300 predicate places. [2024-06-27 18:19:00,538 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 322 transitions, 3320 flow [2024-06-27 18:19:00,538 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 18:19:00,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:00,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:00,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:19:00,539 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:00,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash 763983426, now seen corresponding path program 14 times [2024-06-27 18:19:00,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:00,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160085002] [2024-06-27 18:19:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:00,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:01,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:01,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:01,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160085002] [2024-06-27 18:19:01,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160085002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:01,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:01,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:19:01,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632703331] [2024-06-27 18:19:01,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:01,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:19:01,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:01,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:19:01,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:19:01,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:01,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 322 transitions, 3320 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 18:19:01,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:01,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:01,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:02,631 INFO L124 PetriNetUnfolderBase]: 1717/3152 cut-off events. [2024-06-27 18:19:02,631 INFO L125 PetriNetUnfolderBase]: For 193542/193542 co-relation queries the response was YES. [2024-06-27 18:19:02,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17865 conditions, 3152 events. 1717/3152 cut-off events. For 193542/193542 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19704 event pairs, 317 based on Foata normal form. 2/2957 useless extension candidates. Maximal degree in co-relation 17709. Up to 2743 conditions per place. [2024-06-27 18:19:02,668 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 315 selfloop transitions, 23 changer transitions 0/346 dead transitions. [2024-06-27 18:19:02,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 346 transitions, 4096 flow [2024-06-27 18:19:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:19:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:19:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2024-06-27 18:19:02,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131578947368421 [2024-06-27 18:19:02,669 INFO L175 Difference]: Start difference. First operand has 342 places, 322 transitions, 3320 flow. Second operand 10 states and 157 transitions. [2024-06-27 18:19:02,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 346 transitions, 4096 flow [2024-06-27 18:19:03,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 346 transitions, 3998 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:03,633 INFO L231 Difference]: Finished difference. Result has 344 places, 323 transitions, 3310 flow [2024-06-27 18:19:03,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3310, PETRI_PLACES=344, PETRI_TRANSITIONS=323} [2024-06-27 18:19:03,634 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 302 predicate places. [2024-06-27 18:19:03,634 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 323 transitions, 3310 flow [2024-06-27 18:19:03,634 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 18:19:03,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:03,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:03,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:19:03,635 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:03,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:03,635 INFO L85 PathProgramCache]: Analyzing trace with hash 764281956, now seen corresponding path program 15 times [2024-06-27 18:19:03,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:03,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991367954] [2024-06-27 18:19:03,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:03,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:04,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:04,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991367954] [2024-06-27 18:19:04,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991367954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:04,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:04,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:19:04,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779216787] [2024-06-27 18:19:04,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:04,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:19:04,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:04,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:19:04,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:19:04,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:04,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 323 transitions, 3310 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 18:19:04,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:04,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:04,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:05,536 INFO L124 PetriNetUnfolderBase]: 1718/3163 cut-off events. [2024-06-27 18:19:05,536 INFO L125 PetriNetUnfolderBase]: For 184159/184159 co-relation queries the response was YES. [2024-06-27 18:19:05,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17465 conditions, 3163 events. 1718/3163 cut-off events. For 184159/184159 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 19828 event pairs, 315 based on Foata normal form. 2/2966 useless extension candidates. Maximal degree in co-relation 17308. Up to 2701 conditions per place. [2024-06-27 18:19:05,570 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 319 selfloop transitions, 22 changer transitions 0/349 dead transitions. [2024-06-27 18:19:05,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 349 transitions, 4104 flow [2024-06-27 18:19:05,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:05,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:05,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 18:19:05,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2024-06-27 18:19:05,571 INFO L175 Difference]: Start difference. First operand has 344 places, 323 transitions, 3310 flow. Second operand 11 states and 167 transitions. [2024-06-27 18:19:05,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 349 transitions, 4104 flow [2024-06-27 18:19:06,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 349 transitions, 3999 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:06,485 INFO L231 Difference]: Finished difference. Result has 346 places, 324 transitions, 3293 flow [2024-06-27 18:19:06,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3205, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3293, PETRI_PLACES=346, PETRI_TRANSITIONS=324} [2024-06-27 18:19:06,485 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 304 predicate places. [2024-06-27 18:19:06,485 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 324 transitions, 3293 flow [2024-06-27 18:19:06,486 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 18:19:06,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:06,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:06,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:19:06,486 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:06,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:06,486 INFO L85 PathProgramCache]: Analyzing trace with hash 928832513, now seen corresponding path program 1 times [2024-06-27 18:19:06,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:06,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015501959] [2024-06-27 18:19:06,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:06,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:07,526 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 18:19:07,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:07,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015501959] [2024-06-27 18:19:07,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015501959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:07,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:07,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:07,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6886310] [2024-06-27 18:19:07,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:07,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:07,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:07,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:07,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:07,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:07,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 324 transitions, 3293 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:07,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:07,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:07,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:08,651 INFO L124 PetriNetUnfolderBase]: 1859/3475 cut-off events. [2024-06-27 18:19:08,651 INFO L125 PetriNetUnfolderBase]: For 273012/273012 co-relation queries the response was YES. [2024-06-27 18:19:08,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20100 conditions, 3475 events. 1859/3475 cut-off events. For 273012/273012 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 22490 event pairs, 324 based on Foata normal form. 2/3267 useless extension candidates. Maximal degree in co-relation 19943. Up to 2601 conditions per place. [2024-06-27 18:19:08,691 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 349 selfloop transitions, 27 changer transitions 0/384 dead transitions. [2024-06-27 18:19:08,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 384 transitions, 4530 flow [2024-06-27 18:19:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:19:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:19:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 224 transitions. [2024-06-27 18:19:08,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4534412955465587 [2024-06-27 18:19:08,692 INFO L175 Difference]: Start difference. First operand has 346 places, 324 transitions, 3293 flow. Second operand 13 states and 224 transitions. [2024-06-27 18:19:08,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 384 transitions, 4530 flow [2024-06-27 18:19:09,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 384 transitions, 4452 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:09,875 INFO L231 Difference]: Finished difference. Result has 350 places, 326 transitions, 3335 flow [2024-06-27 18:19:09,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3215, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3335, PETRI_PLACES=350, PETRI_TRANSITIONS=326} [2024-06-27 18:19:09,875 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 308 predicate places. [2024-06-27 18:19:09,875 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 326 transitions, 3335 flow [2024-06-27 18:19:09,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:09,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:09,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:09,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:19:09,876 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:09,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:09,876 INFO L85 PathProgramCache]: Analyzing trace with hash 930706463, now seen corresponding path program 2 times [2024-06-27 18:19:09,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:09,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916199852] [2024-06-27 18:19:09,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:09,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:11,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:11,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:11,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916199852] [2024-06-27 18:19:11,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916199852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:11,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:11,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:11,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854718020] [2024-06-27 18:19:11,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:11,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:11,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:11,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:11,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 326 transitions, 3335 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:11,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:11,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:11,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:12,221 INFO L124 PetriNetUnfolderBase]: 1902/3569 cut-off events. [2024-06-27 18:19:12,221 INFO L125 PetriNetUnfolderBase]: For 291212/291212 co-relation queries the response was YES. [2024-06-27 18:19:12,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20862 conditions, 3569 events. 1902/3569 cut-off events. For 291212/291212 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 23446 event pairs, 407 based on Foata normal form. 2/3351 useless extension candidates. Maximal degree in co-relation 20704. Up to 3027 conditions per place. [2024-06-27 18:19:12,259 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 343 selfloop transitions, 27 changer transitions 0/378 dead transitions. [2024-06-27 18:19:12,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 378 transitions, 4526 flow [2024-06-27 18:19:12,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:19:12,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:19:12,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 213 transitions. [2024-06-27 18:19:12,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311740890688259 [2024-06-27 18:19:12,261 INFO L175 Difference]: Start difference. First operand has 350 places, 326 transitions, 3335 flow. Second operand 13 states and 213 transitions. [2024-06-27 18:19:12,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 378 transitions, 4526 flow [2024-06-27 18:19:13,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 378 transitions, 4437 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:13,544 INFO L231 Difference]: Finished difference. Result has 355 places, 332 transitions, 3409 flow [2024-06-27 18:19:13,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3409, PETRI_PLACES=355, PETRI_TRANSITIONS=332} [2024-06-27 18:19:13,544 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 313 predicate places. [2024-06-27 18:19:13,544 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 332 transitions, 3409 flow [2024-06-27 18:19:13,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:13,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:13,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:13,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:19:13,545 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:13,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:13,545 INFO L85 PathProgramCache]: Analyzing trace with hash 2046991089, now seen corresponding path program 3 times [2024-06-27 18:19:13,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:13,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092643059] [2024-06-27 18:19:13,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:13,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:13,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:14,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:14,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092643059] [2024-06-27 18:19:14,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092643059] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:14,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:14,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:14,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146898503] [2024-06-27 18:19:14,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:14,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:14,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:14,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:14,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:14,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:14,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 332 transitions, 3409 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:14,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:14,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:14,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:15,912 INFO L124 PetriNetUnfolderBase]: 1900/3599 cut-off events. [2024-06-27 18:19:15,913 INFO L125 PetriNetUnfolderBase]: For 295808/295808 co-relation queries the response was YES. [2024-06-27 18:19:15,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19250 conditions, 3599 events. 1900/3599 cut-off events. For 295808/295808 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 23717 event pairs, 403 based on Foata normal form. 16/3391 useless extension candidates. Maximal degree in co-relation 19089. Up to 2848 conditions per place. [2024-06-27 18:19:15,945 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 343 selfloop transitions, 32 changer transitions 0/383 dead transitions. [2024-06-27 18:19:15,945 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 383 transitions, 4351 flow [2024-06-27 18:19:15,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:19:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:19:15,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 226 transitions. [2024-06-27 18:19:15,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.424812030075188 [2024-06-27 18:19:15,948 INFO L175 Difference]: Start difference. First operand has 355 places, 332 transitions, 3409 flow. Second operand 14 states and 226 transitions. [2024-06-27 18:19:15,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 383 transitions, 4351 flow [2024-06-27 18:19:16,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 383 transitions, 4296 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-27 18:19:16,987 INFO L231 Difference]: Finished difference. Result has 363 places, 333 transitions, 3455 flow [2024-06-27 18:19:16,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3455, PETRI_PLACES=363, PETRI_TRANSITIONS=333} [2024-06-27 18:19:16,988 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 321 predicate places. [2024-06-27 18:19:16,988 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 333 transitions, 3455 flow [2024-06-27 18:19:16,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:16,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:16,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:16,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:19:16,988 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:16,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:16,989 INFO L85 PathProgramCache]: Analyzing trace with hash 930710338, now seen corresponding path program 1 times [2024-06-27 18:19:16,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:16,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624211171] [2024-06-27 18:19:16,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:16,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:18,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:18,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:18,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624211171] [2024-06-27 18:19:18,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624211171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:18,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:18,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:18,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114123317] [2024-06-27 18:19:18,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:18,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:18,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:18,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:18,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:18,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 333 transitions, 3455 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:18,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:18,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:18,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:19,357 INFO L124 PetriNetUnfolderBase]: 1913/3601 cut-off events. [2024-06-27 18:19:19,357 INFO L125 PetriNetUnfolderBase]: For 212315/212315 co-relation queries the response was YES. [2024-06-27 18:19:19,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19438 conditions, 3601 events. 1913/3601 cut-off events. For 212315/212315 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23751 event pairs, 412 based on Foata normal form. 2/3374 useless extension candidates. Maximal degree in co-relation 19275. Up to 3084 conditions per place. [2024-06-27 18:19:19,400 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 338 selfloop transitions, 33 changer transitions 0/379 dead transitions. [2024-06-27 18:19:19,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 379 transitions, 4391 flow [2024-06-27 18:19:19,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-27 18:19:19,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-27 18:19:19,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 231 transitions. [2024-06-27 18:19:19,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2024-06-27 18:19:19,401 INFO L175 Difference]: Start difference. First operand has 363 places, 333 transitions, 3455 flow. Second operand 15 states and 231 transitions. [2024-06-27 18:19:19,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 379 transitions, 4391 flow [2024-06-27 18:19:20,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 379 transitions, 4316 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-27 18:19:20,459 INFO L231 Difference]: Finished difference. Result has 366 places, 335 transitions, 3534 flow [2024-06-27 18:19:20,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3534, PETRI_PLACES=366, PETRI_TRANSITIONS=335} [2024-06-27 18:19:20,459 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 324 predicate places. [2024-06-27 18:19:20,459 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 335 transitions, 3534 flow [2024-06-27 18:19:20,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:20,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:20,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:20,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:19:20,460 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:20,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1017398273, now seen corresponding path program 4 times [2024-06-27 18:19:20,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:20,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810649172] [2024-06-27 18:19:20,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:20,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:21,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:21,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810649172] [2024-06-27 18:19:21,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810649172] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:21,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:21,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161458812] [2024-06-27 18:19:21,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:21,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:21,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:21,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:21,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:21,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 335 transitions, 3534 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:21,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:21,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:21,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:22,579 INFO L124 PetriNetUnfolderBase]: 1910/3605 cut-off events. [2024-06-27 18:19:22,580 INFO L125 PetriNetUnfolderBase]: For 202104/202104 co-relation queries the response was YES. [2024-06-27 18:19:22,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19131 conditions, 3605 events. 1910/3605 cut-off events. For 202104/202104 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 23712 event pairs, 388 based on Foata normal form. 2/3382 useless extension candidates. Maximal degree in co-relation 18967. Up to 2852 conditions per place. [2024-06-27 18:19:22,619 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 349 selfloop transitions, 25 changer transitions 0/382 dead transitions. [2024-06-27 18:19:22,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 382 transitions, 4448 flow [2024-06-27 18:19:22,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:22,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:22,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 203 transitions. [2024-06-27 18:19:22,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4451754385964912 [2024-06-27 18:19:22,620 INFO L175 Difference]: Start difference. First operand has 366 places, 335 transitions, 3534 flow. Second operand 12 states and 203 transitions. [2024-06-27 18:19:22,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 382 transitions, 4448 flow [2024-06-27 18:19:23,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 382 transitions, 4298 flow, removed 43 selfloop flow, removed 13 redundant places. [2024-06-27 18:19:23,495 INFO L231 Difference]: Finished difference. Result has 365 places, 335 transitions, 3438 flow [2024-06-27 18:19:23,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3438, PETRI_PLACES=365, PETRI_TRANSITIONS=335} [2024-06-27 18:19:23,496 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 323 predicate places. [2024-06-27 18:19:23,496 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 335 transitions, 3438 flow [2024-06-27 18:19:23,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:23,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:23,496 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:23,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:19:23,496 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:23,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:23,497 INFO L85 PathProgramCache]: Analyzing trace with hash 456996644, now seen corresponding path program 1 times [2024-06-27 18:19:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:23,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367293933] [2024-06-27 18:19:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:24,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:24,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:24,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367293933] [2024-06-27 18:19:24,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367293933] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:24,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:24,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:24,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033173858] [2024-06-27 18:19:24,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:24,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:24,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:24,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:24,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:24,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 335 transitions, 3438 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:24,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:24,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:24,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:25,508 INFO L124 PetriNetUnfolderBase]: 1927/3638 cut-off events. [2024-06-27 18:19:25,508 INFO L125 PetriNetUnfolderBase]: For 203788/203788 co-relation queries the response was YES. [2024-06-27 18:19:25,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18948 conditions, 3638 events. 1927/3638 cut-off events. For 203788/203788 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 24084 event pairs, 369 based on Foata normal form. 2/3409 useless extension candidates. Maximal degree in co-relation 18783. Up to 2706 conditions per place. [2024-06-27 18:19:25,549 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 273 selfloop transitions, 93 changer transitions 0/374 dead transitions. [2024-06-27 18:19:25,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 374 transitions, 4297 flow [2024-06-27 18:19:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:19:25,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:19:25,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:19:25,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 18:19:25,550 INFO L175 Difference]: Start difference. First operand has 365 places, 335 transitions, 3438 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:19:25,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 374 transitions, 4297 flow [2024-06-27 18:19:26,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 374 transitions, 4245 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:26,450 INFO L231 Difference]: Finished difference. Result has 368 places, 337 transitions, 3596 flow [2024-06-27 18:19:26,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3386, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3596, PETRI_PLACES=368, PETRI_TRANSITIONS=337} [2024-06-27 18:19:26,450 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 326 predicate places. [2024-06-27 18:19:26,450 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 337 transitions, 3596 flow [2024-06-27 18:19:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:26,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:26,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:26,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:19:26,451 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:26,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash 456786898, now seen corresponding path program 2 times [2024-06-27 18:19:26,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:26,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583631113] [2024-06-27 18:19:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:26,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:27,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:27,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583631113] [2024-06-27 18:19:27,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583631113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:27,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:27,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:27,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612456528] [2024-06-27 18:19:27,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:27,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:27,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:27,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:27,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:27,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:27,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 337 transitions, 3596 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:27,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:27,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:27,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:28,630 INFO L124 PetriNetUnfolderBase]: 1951/3674 cut-off events. [2024-06-27 18:19:28,631 INFO L125 PetriNetUnfolderBase]: For 207900/207900 co-relation queries the response was YES. [2024-06-27 18:19:28,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19534 conditions, 3674 events. 1951/3674 cut-off events. For 207900/207900 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 24320 event pairs, 328 based on Foata normal form. 2/3440 useless extension candidates. Maximal degree in co-relation 19367. Up to 2409 conditions per place. [2024-06-27 18:19:28,671 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 241 selfloop transitions, 128 changer transitions 0/377 dead transitions. [2024-06-27 18:19:28,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 377 transitions, 4505 flow [2024-06-27 18:19:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:28,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 206 transitions. [2024-06-27 18:19:28,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517543859649123 [2024-06-27 18:19:28,672 INFO L175 Difference]: Start difference. First operand has 368 places, 337 transitions, 3596 flow. Second operand 12 states and 206 transitions. [2024-06-27 18:19:28,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 377 transitions, 4505 flow [2024-06-27 18:19:29,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 377 transitions, 4315 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 18:19:29,536 INFO L231 Difference]: Finished difference. Result has 372 places, 341 transitions, 3742 flow [2024-06-27 18:19:29,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3406, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3742, PETRI_PLACES=372, PETRI_TRANSITIONS=341} [2024-06-27 18:19:29,537 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 330 predicate places. [2024-06-27 18:19:29,537 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 341 transitions, 3742 flow [2024-06-27 18:19:29,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:29,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:29,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:29,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:19:29,537 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:29,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash 296605272, now seen corresponding path program 3 times [2024-06-27 18:19:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:29,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415113655] [2024-06-27 18:19:29,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:29,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:29,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:30,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415113655] [2024-06-27 18:19:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415113655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:30,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:30,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:30,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616901566] [2024-06-27 18:19:30,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:30,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:30,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:30,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:30,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:30,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:30,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 341 transitions, 3742 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:30,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:30,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:30,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:31,677 INFO L124 PetriNetUnfolderBase]: 1970/3702 cut-off events. [2024-06-27 18:19:31,678 INFO L125 PetriNetUnfolderBase]: For 214756/214756 co-relation queries the response was YES. [2024-06-27 18:19:31,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20014 conditions, 3702 events. 1970/3702 cut-off events. For 214756/214756 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 24552 event pairs, 359 based on Foata normal form. 2/3464 useless extension candidates. Maximal degree in co-relation 19846. Up to 2476 conditions per place. [2024-06-27 18:19:31,716 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 254 selfloop transitions, 122 changer transitions 0/384 dead transitions. [2024-06-27 18:19:31,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 384 transitions, 4698 flow [2024-06-27 18:19:31,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:19:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:19:31,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 221 transitions. [2024-06-27 18:19:31,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 18:19:31,717 INFO L175 Difference]: Start difference. First operand has 372 places, 341 transitions, 3742 flow. Second operand 13 states and 221 transitions. [2024-06-27 18:19:31,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 384 transitions, 4698 flow [2024-06-27 18:19:32,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 384 transitions, 4415 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:32,704 INFO L231 Difference]: Finished difference. Result has 377 places, 345 transitions, 3817 flow [2024-06-27 18:19:32,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3459, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3817, PETRI_PLACES=377, PETRI_TRANSITIONS=345} [2024-06-27 18:19:32,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 18:19:32,705 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 345 transitions, 3817 flow [2024-06-27 18:19:32,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:32,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:32,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:32,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:19:32,705 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:32,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash 296605117, now seen corresponding path program 5 times [2024-06-27 18:19:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:32,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250511790] [2024-06-27 18:19:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:33,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:33,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250511790] [2024-06-27 18:19:33,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250511790] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:33,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:33,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:33,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792239098] [2024-06-27 18:19:33,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:33,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:33,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:33,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:33,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:33,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:33,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 345 transitions, 3817 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:33,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:33,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:33,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:34,765 INFO L124 PetriNetUnfolderBase]: 1987/3742 cut-off events. [2024-06-27 18:19:34,765 INFO L125 PetriNetUnfolderBase]: For 218531/218531 co-relation queries the response was YES. [2024-06-27 18:19:34,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20283 conditions, 3742 events. 1987/3742 cut-off events. For 218531/218531 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 24882 event pairs, 437 based on Foata normal form. 2/3502 useless extension candidates. Maximal degree in co-relation 20113. Up to 3009 conditions per place. [2024-06-27 18:19:34,809 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 288 selfloop transitions, 84 changer transitions 0/380 dead transitions. [2024-06-27 18:19:34,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 380 transitions, 4695 flow [2024-06-27 18:19:34,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:34,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 197 transitions. [2024-06-27 18:19:34,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43201754385964913 [2024-06-27 18:19:34,810 INFO L175 Difference]: Start difference. First operand has 377 places, 345 transitions, 3817 flow. Second operand 12 states and 197 transitions. [2024-06-27 18:19:34,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 380 transitions, 4695 flow [2024-06-27 18:19:35,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 380 transitions, 4359 flow, removed 38 selfloop flow, removed 13 redundant places. [2024-06-27 18:19:35,945 INFO L231 Difference]: Finished difference. Result has 377 places, 347 transitions, 3704 flow [2024-06-27 18:19:35,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3482, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3704, PETRI_PLACES=377, PETRI_TRANSITIONS=347} [2024-06-27 18:19:35,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 335 predicate places. [2024-06-27 18:19:35,946 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 347 transitions, 3704 flow [2024-06-27 18:19:35,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:35,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:35,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:35,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:19:35,946 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:35,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:35,947 INFO L85 PathProgramCache]: Analyzing trace with hash 296460967, now seen corresponding path program 6 times [2024-06-27 18:19:35,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:35,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906034537] [2024-06-27 18:19:35,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:35,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:36,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:36,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906034537] [2024-06-27 18:19:36,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906034537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:36,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:36,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:36,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036668393] [2024-06-27 18:19:36,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:36,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:36,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:36,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:36,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:37,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:37,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 347 transitions, 3704 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:37,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:37,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:37,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:38,106 INFO L124 PetriNetUnfolderBase]: 2092/4006 cut-off events. [2024-06-27 18:19:38,106 INFO L125 PetriNetUnfolderBase]: For 307008/307008 co-relation queries the response was YES. [2024-06-27 18:19:38,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20842 conditions, 4006 events. 2092/4006 cut-off events. For 307008/307008 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 27371 event pairs, 406 based on Foata normal form. 14/3764 useless extension candidates. Maximal degree in co-relation 20673. Up to 2446 conditions per place. [2024-06-27 18:19:38,150 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 257 selfloop transitions, 132 changer transitions 0/397 dead transitions. [2024-06-27 18:19:38,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 397 transitions, 4922 flow [2024-06-27 18:19:38,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:19:38,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:19:38,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 233 transitions. [2024-06-27 18:19:38,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4716599190283401 [2024-06-27 18:19:38,151 INFO L175 Difference]: Start difference. First operand has 377 places, 347 transitions, 3704 flow. Second operand 13 states and 233 transitions. [2024-06-27 18:19:38,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 397 transitions, 4922 flow [2024-06-27 18:19:39,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 397 transitions, 4731 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:19:39,203 INFO L231 Difference]: Finished difference. Result has 381 places, 348 transitions, 3822 flow [2024-06-27 18:19:39,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3513, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3822, PETRI_PLACES=381, PETRI_TRANSITIONS=348} [2024-06-27 18:19:39,203 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 339 predicate places. [2024-06-27 18:19:39,203 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 348 transitions, 3822 flow [2024-06-27 18:19:39,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:39,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:39,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:39,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:19:39,204 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:39,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash 301967652, now seen corresponding path program 4 times [2024-06-27 18:19:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:39,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056755798] [2024-06-27 18:19:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:39,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:40,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:40,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:40,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056755798] [2024-06-27 18:19:40,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056755798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:40,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:40,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:40,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998291180] [2024-06-27 18:19:40,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:40,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:40,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:40,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:40,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:40,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:40,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 348 transitions, 3822 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:40,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:40,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:40,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:41,964 INFO L124 PetriNetUnfolderBase]: 2105/4009 cut-off events. [2024-06-27 18:19:41,964 INFO L125 PetriNetUnfolderBase]: For 227104/227104 co-relation queries the response was YES. [2024-06-27 18:19:41,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21296 conditions, 4009 events. 2105/4009 cut-off events. For 227104/227104 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 27412 event pairs, 375 based on Foata normal form. 2/3750 useless extension candidates. Maximal degree in co-relation 21126. Up to 2659 conditions per place. [2024-06-27 18:19:42,009 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 246 selfloop transitions, 133 changer transitions 0/387 dead transitions. [2024-06-27 18:19:42,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 387 transitions, 5008 flow [2024-06-27 18:19:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-27 18:19:42,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 18:19:42,011 INFO L175 Difference]: Start difference. First operand has 381 places, 348 transitions, 3822 flow. Second operand 12 states and 208 transitions. [2024-06-27 18:19:42,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 387 transitions, 5008 flow [2024-06-27 18:19:43,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 387 transitions, 4717 flow, removed 17 selfloop flow, removed 11 redundant places. [2024-06-27 18:19:43,176 INFO L231 Difference]: Finished difference. Result has 382 places, 350 transitions, 3894 flow [2024-06-27 18:19:43,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3533, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3894, PETRI_PLACES=382, PETRI_TRANSITIONS=350} [2024-06-27 18:19:43,176 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 340 predicate places. [2024-06-27 18:19:43,176 INFO L495 AbstractCegarLoop]: Abstraction has has 382 places, 350 transitions, 3894 flow [2024-06-27 18:19:43,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:43,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:43,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:43,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:19:43,177 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:43,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:43,177 INFO L85 PathProgramCache]: Analyzing trace with hash 301967497, now seen corresponding path program 7 times [2024-06-27 18:19:43,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:43,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360315250] [2024-06-27 18:19:43,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:43,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:44,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:44,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:44,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360315250] [2024-06-27 18:19:44,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360315250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:44,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:44,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:44,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956221040] [2024-06-27 18:19:44,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:44,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:44,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:44,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:44,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:44,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 350 transitions, 3894 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:44,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:44,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:44,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:45,497 INFO L124 PetriNetUnfolderBase]: 2206/4265 cut-off events. [2024-06-27 18:19:45,497 INFO L125 PetriNetUnfolderBase]: For 311525/311525 co-relation queries the response was YES. [2024-06-27 18:19:45,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21810 conditions, 4265 events. 2206/4265 cut-off events. For 311525/311525 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 29929 event pairs, 474 based on Foata normal form. 16/4008 useless extension candidates. Maximal degree in co-relation 21639. Up to 2698 conditions per place. [2024-06-27 18:19:45,546 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 263 selfloop transitions, 124 changer transitions 0/395 dead transitions. [2024-06-27 18:19:45,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 395 transitions, 4856 flow [2024-06-27 18:19:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:45,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-27 18:19:45,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2024-06-27 18:19:45,547 INFO L175 Difference]: Start difference. First operand has 382 places, 350 transitions, 3894 flow. Second operand 12 states and 214 transitions. [2024-06-27 18:19:45,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 395 transitions, 4856 flow [2024-06-27 18:19:46,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 395 transitions, 4488 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-27 18:19:46,655 INFO L231 Difference]: Finished difference. Result has 385 places, 351 transitions, 3831 flow [2024-06-27 18:19:46,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3526, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3831, PETRI_PLACES=385, PETRI_TRANSITIONS=351} [2024-06-27 18:19:46,656 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 343 predicate places. [2024-06-27 18:19:46,656 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 351 transitions, 3831 flow [2024-06-27 18:19:46,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:46,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:46,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:46,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 18:19:46,656 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:46,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:46,657 INFO L85 PathProgramCache]: Analyzing trace with hash 296461122, now seen corresponding path program 5 times [2024-06-27 18:19:46,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:46,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321989954] [2024-06-27 18:19:46,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:46,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:47,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:47,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321989954] [2024-06-27 18:19:47,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321989954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:47,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:47,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906554777] [2024-06-27 18:19:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:47,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:47,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:47,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:47,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:47,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:47,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 351 transitions, 3831 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:47,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:47,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:47,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:49,221 INFO L124 PetriNetUnfolderBase]: 2219/4266 cut-off events. [2024-06-27 18:19:49,221 INFO L125 PetriNetUnfolderBase]: For 220373/220373 co-relation queries the response was YES. [2024-06-27 18:19:49,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 4266 events. 2219/4266 cut-off events. For 220373/220373 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 29897 event pairs, 483 based on Foata normal form. 2/3991 useless extension candidates. Maximal degree in co-relation 21688. Up to 2884 conditions per place. [2024-06-27 18:19:49,263 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 251 selfloop transitions, 136 changer transitions 0/395 dead transitions. [2024-06-27 18:19:49,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 395 transitions, 4811 flow [2024-06-27 18:19:49,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:19:49,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:19:49,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 237 transitions. [2024-06-27 18:19:49,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44548872180451127 [2024-06-27 18:19:49,264 INFO L175 Difference]: Start difference. First operand has 385 places, 351 transitions, 3831 flow. Second operand 14 states and 237 transitions. [2024-06-27 18:19:49,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 395 transitions, 4811 flow [2024-06-27 18:19:50,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 395 transitions, 4537 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-27 18:19:50,316 INFO L231 Difference]: Finished difference. Result has 389 places, 353 transitions, 3931 flow [2024-06-27 18:19:50,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3557, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3931, PETRI_PLACES=389, PETRI_TRANSITIONS=353} [2024-06-27 18:19:50,316 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-27 18:19:50,316 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 353 transitions, 3931 flow [2024-06-27 18:19:50,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:50,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:50,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:50,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 18:19:50,317 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:50,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:50,317 INFO L85 PathProgramCache]: Analyzing trace with hash 296457247, now seen corresponding path program 8 times [2024-06-27 18:19:50,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:50,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749710689] [2024-06-27 18:19:50,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:50,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:51,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:51,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:51,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749710689] [2024-06-27 18:19:51,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749710689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:51,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:51,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:51,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79294347] [2024-06-27 18:19:51,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:51,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:51,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:51,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:51,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 353 transitions, 3931 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:51,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:51,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:51,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:52,562 INFO L124 PetriNetUnfolderBase]: 2236/4331 cut-off events. [2024-06-27 18:19:52,563 INFO L125 PetriNetUnfolderBase]: For 217677/217677 co-relation queries the response was YES. [2024-06-27 18:19:52,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22105 conditions, 4331 events. 2236/4331 cut-off events. For 217677/217677 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 30451 event pairs, 463 based on Foata normal form. 2/4060 useless extension candidates. Maximal degree in co-relation 21931. Up to 2438 conditions per place. [2024-06-27 18:19:52,615 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 261 selfloop transitions, 133 changer transitions 0/402 dead transitions. [2024-06-27 18:19:52,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 402 transitions, 4927 flow [2024-06-27 18:19:52,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:52,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:52,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-27 18:19:52,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:19:52,616 INFO L175 Difference]: Start difference. First operand has 389 places, 353 transitions, 3931 flow. Second operand 12 states and 219 transitions. [2024-06-27 18:19:52,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 402 transitions, 4927 flow [2024-06-27 18:19:53,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 402 transitions, 4581 flow, removed 40 selfloop flow, removed 12 redundant places. [2024-06-27 18:19:53,697 INFO L231 Difference]: Finished difference. Result has 389 places, 354 transitions, 3893 flow [2024-06-27 18:19:53,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3585, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3893, PETRI_PLACES=389, PETRI_TRANSITIONS=354} [2024-06-27 18:19:53,697 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 347 predicate places. [2024-06-27 18:19:53,697 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 354 transitions, 3893 flow [2024-06-27 18:19:53,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:53,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:53,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:53,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 18:19:53,698 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:53,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:53,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2042383285, now seen corresponding path program 9 times [2024-06-27 18:19:53,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:53,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844684398] [2024-06-27 18:19:53,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:53,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:54,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:54,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:54,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844684398] [2024-06-27 18:19:54,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844684398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:54,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:54,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:54,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003341263] [2024-06-27 18:19:54,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:54,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:54,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:54,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:54,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:54,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:54,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 354 transitions, 3893 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:54,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:54,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:54,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:55,914 INFO L124 PetriNetUnfolderBase]: 2377/4636 cut-off events. [2024-06-27 18:19:55,914 INFO L125 PetriNetUnfolderBase]: For 322655/322655 co-relation queries the response was YES. [2024-06-27 18:19:55,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25058 conditions, 4636 events. 2377/4636 cut-off events. For 322655/322655 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 33422 event pairs, 557 based on Foata normal form. 2/4345 useless extension candidates. Maximal degree in co-relation 24883. Up to 2884 conditions per place. [2024-06-27 18:19:55,976 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 278 selfloop transitions, 117 changer transitions 0/403 dead transitions. [2024-06-27 18:19:55,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 403 transitions, 5409 flow [2024-06-27 18:19:55,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:55,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:55,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 219 transitions. [2024-06-27 18:19:55,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48026315789473684 [2024-06-27 18:19:55,978 INFO L175 Difference]: Start difference. First operand has 389 places, 354 transitions, 3893 flow. Second operand 12 states and 219 transitions. [2024-06-27 18:19:55,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 403 transitions, 5409 flow [2024-06-27 18:19:57,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 403 transitions, 5113 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-27 18:19:57,240 INFO L231 Difference]: Finished difference. Result has 391 places, 356 transitions, 3913 flow [2024-06-27 18:19:57,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3913, PETRI_PLACES=391, PETRI_TRANSITIONS=356} [2024-06-27 18:19:57,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 349 predicate places. [2024-06-27 18:19:57,240 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 356 transitions, 3913 flow [2024-06-27 18:19:57,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:57,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:19:57,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:19:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 18:19:57,241 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:19:57,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:19:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -2042235260, now seen corresponding path program 6 times [2024-06-27 18:19:57,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:19:57,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074306792] [2024-06-27 18:19:57,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:19:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:19:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:19:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:19:58,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:19:58,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074306792] [2024-06-27 18:19:58,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074306792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:19:58,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:19:58,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:19:58,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869171804] [2024-06-27 18:19:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:19:58,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:19:58,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:19:58,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:19:58,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:19:58,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:19:58,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 356 transitions, 3913 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:19:58,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:19:58,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:19:58,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:19:59,584 INFO L124 PetriNetUnfolderBase]: 2390/4647 cut-off events. [2024-06-27 18:19:59,584 INFO L125 PetriNetUnfolderBase]: For 325211/325211 co-relation queries the response was YES. [2024-06-27 18:19:59,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25120 conditions, 4647 events. 2390/4647 cut-off events. For 325211/325211 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 33549 event pairs, 527 based on Foata normal form. 2/4349 useless extension candidates. Maximal degree in co-relation 24944. Up to 3182 conditions per place. [2024-06-27 18:19:59,635 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 265 selfloop transitions, 123 changer transitions 0/396 dead transitions. [2024-06-27 18:19:59,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 396 transitions, 5188 flow [2024-06-27 18:19:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:19:59,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:19:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-27 18:19:59,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 18:19:59,636 INFO L175 Difference]: Start difference. First operand has 391 places, 356 transitions, 3913 flow. Second operand 12 states and 210 transitions. [2024-06-27 18:19:59,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 396 transitions, 5188 flow [2024-06-27 18:20:00,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 396 transitions, 4997 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 18:20:00,998 INFO L231 Difference]: Finished difference. Result has 397 places, 361 transitions, 4213 flow [2024-06-27 18:20:00,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=3723, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4213, PETRI_PLACES=397, PETRI_TRANSITIONS=361} [2024-06-27 18:20:00,998 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 355 predicate places. [2024-06-27 18:20:00,998 INFO L495 AbstractCegarLoop]: Abstraction has has 397 places, 361 transitions, 4213 flow [2024-06-27 18:20:00,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:00,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:00,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:00,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 18:20:00,999 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:00,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:00,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1863619608, now seen corresponding path program 7 times [2024-06-27 18:20:00,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:00,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139484663] [2024-06-27 18:20:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:01,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:02,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139484663] [2024-06-27 18:20:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139484663] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:02,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:02,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:02,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871327040] [2024-06-27 18:20:02,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:02,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:02,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:02,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:02,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:02,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:02,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 361 transitions, 4213 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:02,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:02,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:02,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:03,391 INFO L124 PetriNetUnfolderBase]: 2414/4683 cut-off events. [2024-06-27 18:20:03,391 INFO L125 PetriNetUnfolderBase]: For 331780/331780 co-relation queries the response was YES. [2024-06-27 18:20:03,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25894 conditions, 4683 events. 2414/4683 cut-off events. For 331780/331780 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 33812 event pairs, 596 based on Foata normal form. 2/4381 useless extension candidates. Maximal degree in co-relation 25714. Up to 3306 conditions per place. [2024-06-27 18:20:03,603 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 285 selfloop transitions, 106 changer transitions 0/399 dead transitions. [2024-06-27 18:20:03,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 399 transitions, 5168 flow [2024-06-27 18:20:03,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:03,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:03,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-27 18:20:03,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45394736842105265 [2024-06-27 18:20:03,604 INFO L175 Difference]: Start difference. First operand has 397 places, 361 transitions, 4213 flow. Second operand 12 states and 207 transitions. [2024-06-27 18:20:03,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 399 transitions, 5168 flow [2024-06-27 18:20:05,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 399 transitions, 5006 flow, removed 40 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:05,019 INFO L231 Difference]: Finished difference. Result has 402 places, 365 transitions, 4351 flow [2024-06-27 18:20:05,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4351, PETRI_PLACES=402, PETRI_TRANSITIONS=365} [2024-06-27 18:20:05,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 360 predicate places. [2024-06-27 18:20:05,020 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 365 transitions, 4351 flow [2024-06-27 18:20:05,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:05,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:05,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:05,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 18:20:05,021 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:05,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:05,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1136306980, now seen corresponding path program 8 times [2024-06-27 18:20:05,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:05,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047244549] [2024-06-27 18:20:05,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:05,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:05,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:05,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047244549] [2024-06-27 18:20:05,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047244549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:05,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:05,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:05,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382701494] [2024-06-27 18:20:05,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:05,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:05,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:05,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:05,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:06,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:06,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 365 transitions, 4351 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:06,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:06,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:06,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:07,379 INFO L124 PetriNetUnfolderBase]: 2444/4726 cut-off events. [2024-06-27 18:20:07,379 INFO L125 PetriNetUnfolderBase]: For 356270/356270 co-relation queries the response was YES. [2024-06-27 18:20:07,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27040 conditions, 4726 events. 2444/4726 cut-off events. For 356270/356270 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 34034 event pairs, 592 based on Foata normal form. 2/4418 useless extension candidates. Maximal degree in co-relation 26858. Up to 3254 conditions per place. [2024-06-27 18:20:07,436 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 275 selfloop transitions, 126 changer transitions 0/409 dead transitions. [2024-06-27 18:20:07,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 409 transitions, 5697 flow [2024-06-27 18:20:07,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:20:07,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:20:07,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 236 transitions. [2024-06-27 18:20:07,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2024-06-27 18:20:07,437 INFO L175 Difference]: Start difference. First operand has 402 places, 365 transitions, 4351 flow. Second operand 14 states and 236 transitions. [2024-06-27 18:20:07,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 409 transitions, 5697 flow [2024-06-27 18:20:08,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 409 transitions, 5454 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:09,001 INFO L231 Difference]: Finished difference. Result has 407 places, 369 transitions, 4560 flow [2024-06-27 18:20:09,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4560, PETRI_PLACES=407, PETRI_TRANSITIONS=369} [2024-06-27 18:20:09,001 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 365 predicate places. [2024-06-27 18:20:09,002 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 369 transitions, 4560 flow [2024-06-27 18:20:09,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:09,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:09,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:09,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 18:20:09,002 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:09,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:09,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1136306825, now seen corresponding path program 10 times [2024-06-27 18:20:09,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:09,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252470189] [2024-06-27 18:20:09,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:09,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:09,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:09,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:09,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252470189] [2024-06-27 18:20:09,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252470189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:09,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:09,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:09,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038934527] [2024-06-27 18:20:09,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:09,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:09,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:10,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:10,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 369 transitions, 4560 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:10,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:10,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:10,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:11,425 INFO L124 PetriNetUnfolderBase]: 2549/4990 cut-off events. [2024-06-27 18:20:11,425 INFO L125 PetriNetUnfolderBase]: For 455157/455157 co-relation queries the response was YES. [2024-06-27 18:20:11,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28082 conditions, 4990 events. 2549/4990 cut-off events. For 455157/455157 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 36656 event pairs, 625 based on Foata normal form. 14/4680 useless extension candidates. Maximal degree in co-relation 27899. Up to 3280 conditions per place. [2024-06-27 18:20:11,486 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 286 selfloop transitions, 122 changer transitions 0/416 dead transitions. [2024-06-27 18:20:11,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 416 transitions, 5816 flow [2024-06-27 18:20:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:20:11,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:20:11,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 231 transitions. [2024-06-27 18:20:11,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4676113360323887 [2024-06-27 18:20:11,488 INFO L175 Difference]: Start difference. First operand has 407 places, 369 transitions, 4560 flow. Second operand 13 states and 231 transitions. [2024-06-27 18:20:11,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 416 transitions, 5816 flow [2024-06-27 18:20:12,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 416 transitions, 5571 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:12,917 INFO L231 Difference]: Finished difference. Result has 410 places, 370 transitions, 4599 flow [2024-06-27 18:20:12,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4315, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4599, PETRI_PLACES=410, PETRI_TRANSITIONS=370} [2024-06-27 18:20:12,918 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 368 predicate places. [2024-06-27 18:20:12,918 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 370 transitions, 4599 flow [2024-06-27 18:20:12,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:12,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:12,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:12,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 18:20:12,918 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:12,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:12,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1142020900, now seen corresponding path program 9 times [2024-06-27 18:20:12,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:12,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765204268] [2024-06-27 18:20:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:12,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:12,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:13,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:13,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:13,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765204268] [2024-06-27 18:20:13,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765204268] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:13,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:13,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:13,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926664814] [2024-06-27 18:20:13,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:13,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:13,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:13,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:13,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:14,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:14,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 370 transitions, 4599 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:14,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:14,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:14,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:15,345 INFO L124 PetriNetUnfolderBase]: 2562/4994 cut-off events. [2024-06-27 18:20:15,345 INFO L125 PetriNetUnfolderBase]: For 363827/363827 co-relation queries the response was YES. [2024-06-27 18:20:15,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28462 conditions, 4994 events. 2562/4994 cut-off events. For 363827/363827 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 36681 event pairs, 658 based on Foata normal form. 2/4668 useless extension candidates. Maximal degree in co-relation 28277. Up to 3572 conditions per place. [2024-06-27 18:20:15,407 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 290 selfloop transitions, 107 changer transitions 0/405 dead transitions. [2024-06-27 18:20:15,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 405 transitions, 5547 flow [2024-06-27 18:20:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:15,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 18:20:15,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44956140350877194 [2024-06-27 18:20:15,408 INFO L175 Difference]: Start difference. First operand has 410 places, 370 transitions, 4599 flow. Second operand 12 states and 205 transitions. [2024-06-27 18:20:15,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 405 transitions, 5547 flow [2024-06-27 18:20:17,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 405 transitions, 5281 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 18:20:17,136 INFO L231 Difference]: Finished difference. Result has 411 places, 372 transitions, 4620 flow [2024-06-27 18:20:17,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4337, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4620, PETRI_PLACES=411, PETRI_TRANSITIONS=372} [2024-06-27 18:20:17,137 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 369 predicate places. [2024-06-27 18:20:17,137 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 372 transitions, 4620 flow [2024-06-27 18:20:17,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:17,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:17,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:17,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 18:20:17,137 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:17,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1335960310, now seen corresponding path program 10 times [2024-06-27 18:20:17,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:17,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793562062] [2024-06-27 18:20:17,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:18,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:18,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:18,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793562062] [2024-06-27 18:20:18,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793562062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:18,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:18,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:18,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166918887] [2024-06-27 18:20:18,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:18,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:18,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:18,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:18,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:18,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:18,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 372 transitions, 4620 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:18,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:18,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:18,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:19,809 INFO L124 PetriNetUnfolderBase]: 2608/5064 cut-off events. [2024-06-27 18:20:19,809 INFO L125 PetriNetUnfolderBase]: For 368381/368381 co-relation queries the response was YES. [2024-06-27 18:20:19,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28908 conditions, 5064 events. 2608/5064 cut-off events. For 368381/368381 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 37128 event pairs, 654 based on Foata normal form. 2/4732 useless extension candidates. Maximal degree in co-relation 28722. Up to 3615 conditions per place. [2024-06-27 18:20:19,875 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 291 selfloop transitions, 114 changer transitions 0/413 dead transitions. [2024-06-27 18:20:19,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 413 transitions, 5673 flow [2024-06-27 18:20:19,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:19,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:19,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-27 18:20:19,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 18:20:19,877 INFO L175 Difference]: Start difference. First operand has 411 places, 372 transitions, 4620 flow. Second operand 12 states and 204 transitions. [2024-06-27 18:20:19,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 413 transitions, 5673 flow [2024-06-27 18:20:21,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 413 transitions, 5409 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:21,705 INFO L231 Difference]: Finished difference. Result has 414 places, 380 transitions, 4754 flow [2024-06-27 18:20:21,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4366, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4754, PETRI_PLACES=414, PETRI_TRANSITIONS=380} [2024-06-27 18:20:21,705 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 372 predicate places. [2024-06-27 18:20:21,706 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 380 transitions, 4754 flow [2024-06-27 18:20:21,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:21,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:21,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:21,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 18:20:21,706 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:21,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:21,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1142028836, now seen corresponding path program 2 times [2024-06-27 18:20:21,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:21,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170586005] [2024-06-27 18:20:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:21,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:22,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:22,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170586005] [2024-06-27 18:20:22,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170586005] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:22,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:22,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950214724] [2024-06-27 18:20:22,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:22,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:22,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:22,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 380 transitions, 4754 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:22,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:22,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:22,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:24,211 INFO L124 PetriNetUnfolderBase]: 2625/5104 cut-off events. [2024-06-27 18:20:24,212 INFO L125 PetriNetUnfolderBase]: For 376099/376099 co-relation queries the response was YES. [2024-06-27 18:20:24,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28998 conditions, 5104 events. 2625/5104 cut-off events. For 376099/376099 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 37547 event pairs, 634 based on Foata normal form. 2/4770 useless extension candidates. Maximal degree in co-relation 28811. Up to 3952 conditions per place. [2024-06-27 18:20:24,270 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 329 selfloop transitions, 79 changer transitions 0/416 dead transitions. [2024-06-27 18:20:24,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 416 transitions, 5686 flow [2024-06-27 18:20:24,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:24,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:20:24,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 18:20:24,271 INFO L175 Difference]: Start difference. First operand has 414 places, 380 transitions, 4754 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:20:24,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 416 transitions, 5686 flow [2024-06-27 18:20:26,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 416 transitions, 5430 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:26,159 INFO L231 Difference]: Finished difference. Result has 418 places, 381 transitions, 4670 flow [2024-06-27 18:20:26,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4498, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4670, PETRI_PLACES=418, PETRI_TRANSITIONS=381} [2024-06-27 18:20:26,159 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 376 predicate places. [2024-06-27 18:20:26,159 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 381 transitions, 4670 flow [2024-06-27 18:20:26,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:26,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:26,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:26,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 18:20:26,160 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:26,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:26,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1141813355, now seen corresponding path program 11 times [2024-06-27 18:20:26,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:26,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012371915] [2024-06-27 18:20:26,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:27,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:27,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012371915] [2024-06-27 18:20:27,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012371915] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:27,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:27,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:27,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549803962] [2024-06-27 18:20:27,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:27,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:27,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:27,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:27,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:27,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:27,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 381 transitions, 4670 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:27,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:27,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:27,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:28,804 INFO L124 PetriNetUnfolderBase]: 2730/5368 cut-off events. [2024-06-27 18:20:28,804 INFO L125 PetriNetUnfolderBase]: For 479285/479285 co-relation queries the response was YES. [2024-06-27 18:20:28,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29786 conditions, 5368 events. 2730/5368 cut-off events. For 479285/479285 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 40202 event pairs, 702 based on Foata normal form. 14/5031 useless extension candidates. Maximal degree in co-relation 29598. Up to 3606 conditions per place. [2024-06-27 18:20:28,856 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 301 selfloop transitions, 115 changer transitions 0/424 dead transitions. [2024-06-27 18:20:28,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 424 transitions, 5684 flow [2024-06-27 18:20:28,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:28,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 215 transitions. [2024-06-27 18:20:28,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47149122807017546 [2024-06-27 18:20:28,857 INFO L175 Difference]: Start difference. First operand has 418 places, 381 transitions, 4670 flow. Second operand 12 states and 215 transitions. [2024-06-27 18:20:28,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 424 transitions, 5684 flow [2024-06-27 18:20:30,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 424 transitions, 5502 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 18:20:30,837 INFO L231 Difference]: Finished difference. Result has 419 places, 382 transitions, 4762 flow [2024-06-27 18:20:30,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4488, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4762, PETRI_PLACES=419, PETRI_TRANSITIONS=382} [2024-06-27 18:20:30,838 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 377 predicate places. [2024-06-27 18:20:30,838 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 382 transitions, 4762 flow [2024-06-27 18:20:30,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:30,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:30,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:30,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 18:20:30,839 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:30,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:30,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1141813510, now seen corresponding path program 11 times [2024-06-27 18:20:30,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:30,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479581929] [2024-06-27 18:20:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:30,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:32,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:32,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:32,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479581929] [2024-06-27 18:20:32,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479581929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:32,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:32,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:32,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530627162] [2024-06-27 18:20:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:32,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:32,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:32,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:32,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 382 transitions, 4762 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:32,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:32,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:32,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:33,978 INFO L124 PetriNetUnfolderBase]: 2743/5371 cut-off events. [2024-06-27 18:20:33,978 INFO L125 PetriNetUnfolderBase]: For 386632/386632 co-relation queries the response was YES. [2024-06-27 18:20:34,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30213 conditions, 5371 events. 2743/5371 cut-off events. For 386632/386632 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 40234 event pairs, 620 based on Foata normal form. 2/5018 useless extension candidates. Maximal degree in co-relation 30024. Up to 3786 conditions per place. [2024-06-27 18:20:34,041 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 287 selfloop transitions, 123 changer transitions 0/418 dead transitions. [2024-06-27 18:20:34,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 418 transitions, 5752 flow [2024-06-27 18:20:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:34,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-27 18:20:34,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:20:34,042 INFO L175 Difference]: Start difference. First operand has 419 places, 382 transitions, 4762 flow. Second operand 12 states and 209 transitions. [2024-06-27 18:20:34,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 418 transitions, 5752 flow [2024-06-27 18:20:35,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 418 transitions, 5504 flow, removed 13 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:35,764 INFO L231 Difference]: Finished difference. Result has 421 places, 384 transitions, 4845 flow [2024-06-27 18:20:35,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4514, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4845, PETRI_PLACES=421, PETRI_TRANSITIONS=384} [2024-06-27 18:20:35,765 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 379 predicate places. [2024-06-27 18:20:35,765 INFO L495 AbstractCegarLoop]: Abstraction has has 421 places, 384 transitions, 4845 flow [2024-06-27 18:20:35,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:35,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:35,765 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 18:20:35,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 18:20:35,765 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:35,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1343377556, now seen corresponding path program 3 times [2024-06-27 18:20:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:35,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610456728] [2024-06-27 18:20:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:35,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:36,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:36,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:36,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610456728] [2024-06-27 18:20:36,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610456728] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:36,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:36,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:36,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881525314] [2024-06-27 18:20:36,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:36,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:36,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:36,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:36,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:36,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:36,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 384 transitions, 4845 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:36,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:36,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:36,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:38,433 INFO L124 PetriNetUnfolderBase]: 2760/5410 cut-off events. [2024-06-27 18:20:38,433 INFO L125 PetriNetUnfolderBase]: For 391089/391089 co-relation queries the response was YES. [2024-06-27 18:20:38,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30301 conditions, 5410 events. 2760/5410 cut-off events. For 391089/391089 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 40640 event pairs, 747 based on Foata normal form. 2/5056 useless extension candidates. Maximal degree in co-relation 30111. Up to 4246 conditions per place. [2024-06-27 18:20:38,500 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 335 selfloop transitions, 76 changer transitions 0/419 dead transitions. [2024-06-27 18:20:38,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 419 transitions, 5781 flow [2024-06-27 18:20:38,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:38,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:38,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:20:38,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44258373205741625 [2024-06-27 18:20:38,501 INFO L175 Difference]: Start difference. First operand has 421 places, 384 transitions, 4845 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:20:38,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 419 transitions, 5781 flow [2024-06-27 18:20:40,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 419 transitions, 5478 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:40,401 INFO L231 Difference]: Finished difference. Result has 422 places, 385 transitions, 4710 flow [2024-06-27 18:20:40,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4542, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4710, PETRI_PLACES=422, PETRI_TRANSITIONS=385} [2024-06-27 18:20:40,401 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 380 predicate places. [2024-06-27 18:20:40,402 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 385 transitions, 4710 flow [2024-06-27 18:20:40,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:40,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:40,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:40,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 18:20:40,402 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:40,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:40,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1193178780, now seen corresponding path program 12 times [2024-06-27 18:20:40,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:40,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136998732] [2024-06-27 18:20:40,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:40,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:40,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:41,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:41,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136998732] [2024-06-27 18:20:41,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136998732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:41,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:41,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403431446] [2024-06-27 18:20:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:41,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:41,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:41,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:41,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:41,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 385 transitions, 4710 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:41,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:41,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:41,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:43,179 INFO L124 PetriNetUnfolderBase]: 2773/5430 cut-off events. [2024-06-27 18:20:43,179 INFO L125 PetriNetUnfolderBase]: For 396622/396622 co-relation queries the response was YES. [2024-06-27 18:20:43,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30226 conditions, 5430 events. 2773/5430 cut-off events. For 396622/396622 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 40705 event pairs, 716 based on Foata normal form. 2/5071 useless extension candidates. Maximal degree in co-relation 30035. Up to 3918 conditions per place. [2024-06-27 18:20:43,250 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 290 selfloop transitions, 121 changer transitions 0/419 dead transitions. [2024-06-27 18:20:43,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 419 transitions, 5686 flow [2024-06-27 18:20:43,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 18:20:43,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-06-27 18:20:43,251 INFO L175 Difference]: Start difference. First operand has 422 places, 385 transitions, 4710 flow. Second operand 12 states and 201 transitions. [2024-06-27 18:20:43,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 419 transitions, 5686 flow [2024-06-27 18:20:45,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 419 transitions, 5530 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 18:20:45,365 INFO L231 Difference]: Finished difference. Result has 425 places, 387 transitions, 4873 flow [2024-06-27 18:20:45,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4554, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4873, PETRI_PLACES=425, PETRI_TRANSITIONS=387} [2024-06-27 18:20:45,365 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 383 predicate places. [2024-06-27 18:20:45,365 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 387 transitions, 4873 flow [2024-06-27 18:20:45,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:45,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:45,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:45,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 18:20:45,366 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:45,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:45,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1335752765, now seen corresponding path program 12 times [2024-06-27 18:20:45,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:45,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404547333] [2024-06-27 18:20:45,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:45,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:46,356 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 18:20:46,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:46,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404547333] [2024-06-27 18:20:46,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404547333] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:46,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:46,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:46,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096105810] [2024-06-27 18:20:46,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:46,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:46,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:46,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:46,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:46,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:46,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 387 transitions, 4873 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:46,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:46,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:46,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:47,774 INFO L124 PetriNetUnfolderBase]: 2750/5406 cut-off events. [2024-06-27 18:20:47,774 INFO L125 PetriNetUnfolderBase]: For 384231/384231 co-relation queries the response was YES. [2024-06-27 18:20:47,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28086 conditions, 5406 events. 2750/5406 cut-off events. For 384231/384231 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 40547 event pairs, 698 based on Foata normal form. 16/5063 useless extension candidates. Maximal degree in co-relation 27896. Up to 3607 conditions per place. [2024-06-27 18:20:47,843 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 299 selfloop transitions, 121 changer transitions 0/428 dead transitions. [2024-06-27 18:20:47,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 428 transitions, 5859 flow [2024-06-27 18:20:47,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:20:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:20:47,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 212 transitions. [2024-06-27 18:20:47,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649122807017544 [2024-06-27 18:20:47,845 INFO L175 Difference]: Start difference. First operand has 425 places, 387 transitions, 4873 flow. Second operand 12 states and 212 transitions. [2024-06-27 18:20:47,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 428 transitions, 5859 flow [2024-06-27 18:20:49,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 428 transitions, 5543 flow, removed 51 selfloop flow, removed 10 redundant places. [2024-06-27 18:20:49,819 INFO L231 Difference]: Finished difference. Result has 428 places, 387 transitions, 4826 flow [2024-06-27 18:20:49,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4557, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4826, PETRI_PLACES=428, PETRI_TRANSITIONS=387} [2024-06-27 18:20:49,820 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-06-27 18:20:49,820 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 387 transitions, 4826 flow [2024-06-27 18:20:49,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:49,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:49,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:49,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 18:20:49,821 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:49,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1662051842, now seen corresponding path program 4 times [2024-06-27 18:20:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656046335] [2024-06-27 18:20:49,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:49,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:50,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:50,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656046335] [2024-06-27 18:20:50,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656046335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:50,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:50,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:20:50,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117446995] [2024-06-27 18:20:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:20:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:50,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:20:50,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:20:50,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:50,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 387 transitions, 4826 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:50,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:50,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:50,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:52,096 INFO L124 PetriNetUnfolderBase]: 2787/5467 cut-off events. [2024-06-27 18:20:52,096 INFO L125 PetriNetUnfolderBase]: For 288116/288116 co-relation queries the response was YES. [2024-06-27 18:20:52,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28410 conditions, 5467 events. 2787/5467 cut-off events. For 288116/288116 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 41206 event pairs, 720 based on Foata normal form. 2/5110 useless extension candidates. Maximal degree in co-relation 28219. Up to 4175 conditions per place. [2024-06-27 18:20:52,163 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 339 selfloop transitions, 80 changer transitions 0/427 dead transitions. [2024-06-27 18:20:52,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 427 transitions, 6078 flow [2024-06-27 18:20:52,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:20:52,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 18:20:52,164 INFO L175 Difference]: Start difference. First operand has 428 places, 387 transitions, 4826 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:20:52,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 427 transitions, 6078 flow [2024-06-27 18:20:53,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 427 transitions, 5784 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 18:20:53,932 INFO L231 Difference]: Finished difference. Result has 428 places, 389 transitions, 4726 flow [2024-06-27 18:20:53,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4536, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4726, PETRI_PLACES=428, PETRI_TRANSITIONS=389} [2024-06-27 18:20:53,933 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 386 predicate places. [2024-06-27 18:20:53,933 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 389 transitions, 4726 flow [2024-06-27 18:20:53,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:53,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:53,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:53,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 18:20:53,933 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:53,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:53,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1669470452, now seen corresponding path program 5 times [2024-06-27 18:20:53,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:53,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896401891] [2024-06-27 18:20:53,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:53,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:53,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:54,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:54,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896401891] [2024-06-27 18:20:54,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896401891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:54,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:54,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:54,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047592594] [2024-06-27 18:20:54,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:54,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:54,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:54,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:54,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:55,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:55,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 389 transitions, 4726 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:55,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:55,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:55,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:20:56,523 INFO L124 PetriNetUnfolderBase]: 2784/5470 cut-off events. [2024-06-27 18:20:56,524 INFO L125 PetriNetUnfolderBase]: For 265427/265427 co-relation queries the response was YES. [2024-06-27 18:20:56,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27845 conditions, 5470 events. 2784/5470 cut-off events. For 265427/265427 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 41285 event pairs, 739 based on Foata normal form. 2/5107 useless extension candidates. Maximal degree in co-relation 27653. Up to 4288 conditions per place. [2024-06-27 18:20:56,586 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 342 selfloop transitions, 74 changer transitions 0/424 dead transitions. [2024-06-27 18:20:56,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 424 transitions, 5666 flow [2024-06-27 18:20:56,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:20:56,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:20:56,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:20:56,587 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 18:20:56,587 INFO L175 Difference]: Start difference. First operand has 428 places, 389 transitions, 4726 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:20:56,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 424 transitions, 5666 flow [2024-06-27 18:20:58,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 424 transitions, 5555 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-27 18:20:58,037 INFO L231 Difference]: Finished difference. Result has 432 places, 389 transitions, 4767 flow [2024-06-27 18:20:58,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4615, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4767, PETRI_PLACES=432, PETRI_TRANSITIONS=389} [2024-06-27 18:20:58,038 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 390 predicate places. [2024-06-27 18:20:58,038 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 389 transitions, 4767 flow [2024-06-27 18:20:58,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:58,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:20:58,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:20:58,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 18:20:58,038 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:20:58,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:20:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1509000612, now seen corresponding path program 13 times [2024-06-27 18:20:58,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:20:58,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019596938] [2024-06-27 18:20:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:20:58,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:20:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:20:59,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:20:59,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:20:59,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019596938] [2024-06-27 18:20:59,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019596938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:20:59,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:20:59,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:20:59,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904942013] [2024-06-27 18:20:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:20:59,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:20:59,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:20:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:20:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:20:59,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:20:59,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 389 transitions, 4767 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:20:59,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:20:59,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:20:59,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:01,052 INFO L124 PetriNetUnfolderBase]: 2780/5464 cut-off events. [2024-06-27 18:21:01,052 INFO L125 PetriNetUnfolderBase]: For 250369/250369 co-relation queries the response was YES. [2024-06-27 18:21:01,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27668 conditions, 5464 events. 2780/5464 cut-off events. For 250369/250369 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 41199 event pairs, 621 based on Foata normal form. 2/5100 useless extension candidates. Maximal degree in co-relation 27474. Up to 3840 conditions per place. [2024-06-27 18:21:01,110 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 285 selfloop transitions, 129 changer transitions 0/422 dead transitions. [2024-06-27 18:21:01,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 422 transitions, 5685 flow [2024-06-27 18:21:01,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:01,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 205 transitions. [2024-06-27 18:21:01,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44956140350877194 [2024-06-27 18:21:01,111 INFO L175 Difference]: Start difference. First operand has 432 places, 389 transitions, 4767 flow. Second operand 12 states and 205 transitions. [2024-06-27 18:21:01,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 422 transitions, 5685 flow [2024-06-27 18:21:02,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 422 transitions, 5455 flow, removed 29 selfloop flow, removed 11 redundant places. [2024-06-27 18:21:02,587 INFO L231 Difference]: Finished difference. Result has 433 places, 389 transitions, 4800 flow [2024-06-27 18:21:02,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4537, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4800, PETRI_PLACES=433, PETRI_TRANSITIONS=389} [2024-06-27 18:21:02,588 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-27 18:21:02,588 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 389 transitions, 4800 flow [2024-06-27 18:21:02,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:02,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:02,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:02,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 18:21:02,588 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:02,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:02,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1482456868, now seen corresponding path program 6 times [2024-06-27 18:21:02,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:02,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104365282] [2024-06-27 18:21:02,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:02,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:03,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:03,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104365282] [2024-06-27 18:21:03,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104365282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:03,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:03,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013328472] [2024-06-27 18:21:03,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:03,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:03,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:03,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:03,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:04,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:04,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 389 transitions, 4800 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:04,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:04,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:04,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:05,278 INFO L124 PetriNetUnfolderBase]: 2808/5521 cut-off events. [2024-06-27 18:21:05,278 INFO L125 PetriNetUnfolderBase]: For 252907/252907 co-relation queries the response was YES. [2024-06-27 18:21:05,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27991 conditions, 5521 events. 2808/5521 cut-off events. For 252907/252907 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 41676 event pairs, 690 based on Foata normal form. 2/5154 useless extension candidates. Maximal degree in co-relation 27796. Up to 4282 conditions per place. [2024-06-27 18:21:05,348 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 337 selfloop transitions, 79 changer transitions 0/424 dead transitions. [2024-06-27 18:21:05,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 424 transitions, 5775 flow [2024-06-27 18:21:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:21:05,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 18:21:05,349 INFO L175 Difference]: Start difference. First operand has 433 places, 389 transitions, 4800 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:21:05,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 424 transitions, 5775 flow [2024-06-27 18:21:06,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 424 transitions, 5480 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 18:21:06,863 INFO L231 Difference]: Finished difference. Result has 433 places, 392 transitions, 4714 flow [2024-06-27 18:21:06,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4507, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4714, PETRI_PLACES=433, PETRI_TRANSITIONS=392} [2024-06-27 18:21:06,863 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 391 predicate places. [2024-06-27 18:21:06,863 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 392 transitions, 4714 flow [2024-06-27 18:21:06,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:06,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:06,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:06,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 18:21:06,864 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:06,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1287511486, now seen corresponding path program 7 times [2024-06-27 18:21:06,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:06,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118318603] [2024-06-27 18:21:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:06,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:07,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:07,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:07,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118318603] [2024-06-27 18:21:07,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118318603] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:07,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:07,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:07,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438804695] [2024-06-27 18:21:07,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:07,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:07,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:07,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:07,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:08,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:08,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 392 transitions, 4714 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:08,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:08,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:08,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:09,279 INFO L124 PetriNetUnfolderBase]: 2825/5561 cut-off events. [2024-06-27 18:21:09,279 INFO L125 PetriNetUnfolderBase]: For 256064/256064 co-relation queries the response was YES. [2024-06-27 18:21:09,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27926 conditions, 5561 events. 2825/5561 cut-off events. For 256064/256064 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 42158 event pairs, 690 based on Foata normal form. 2/5191 useless extension candidates. Maximal degree in co-relation 27730. Up to 4313 conditions per place. [2024-06-27 18:21:09,352 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 339 selfloop transitions, 78 changer transitions 0/425 dead transitions. [2024-06-27 18:21:09,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 425 transitions, 5662 flow [2024-06-27 18:21:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:09,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:09,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:21:09,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 18:21:09,353 INFO L175 Difference]: Start difference. First operand has 433 places, 392 transitions, 4714 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:21:09,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 425 transitions, 5662 flow [2024-06-27 18:21:10,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 425 transitions, 5494 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:10,970 INFO L231 Difference]: Finished difference. Result has 437 places, 394 transitions, 4735 flow [2024-06-27 18:21:10,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4546, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4735, PETRI_PLACES=437, PETRI_TRANSITIONS=394} [2024-06-27 18:21:10,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 395 predicate places. [2024-06-27 18:21:10,970 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 394 transitions, 4735 flow [2024-06-27 18:21:10,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:10,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:10,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:10,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 18:21:10,971 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:10,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1086162766, now seen corresponding path program 8 times [2024-06-27 18:21:10,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:10,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797231147] [2024-06-27 18:21:10,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797231147] [2024-06-27 18:21:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797231147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:11,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:11,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589513615] [2024-06-27 18:21:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:11,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:11,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:12,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:12,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 394 transitions, 4735 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:12,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:12,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:13,449 INFO L124 PetriNetUnfolderBase]: 2853/5618 cut-off events. [2024-06-27 18:21:13,449 INFO L125 PetriNetUnfolderBase]: For 259978/259978 co-relation queries the response was YES. [2024-06-27 18:21:13,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28230 conditions, 5618 events. 2853/5618 cut-off events. For 259978/259978 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 42683 event pairs, 701 based on Foata normal form. 2/5244 useless extension candidates. Maximal degree in co-relation 28032. Up to 4395 conditions per place. [2024-06-27 18:21:13,524 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 347 selfloop transitions, 73 changer transitions 0/428 dead transitions. [2024-06-27 18:21:13,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 428 transitions, 5718 flow [2024-06-27 18:21:13,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:13,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 187 transitions. [2024-06-27 18:21:13,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 18:21:13,525 INFO L175 Difference]: Start difference. First operand has 437 places, 394 transitions, 4735 flow. Second operand 11 states and 187 transitions. [2024-06-27 18:21:13,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 428 transitions, 5718 flow [2024-06-27 18:21:15,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 428 transitions, 5540 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:15,133 INFO L231 Difference]: Finished difference. Result has 439 places, 397 transitions, 4760 flow [2024-06-27 18:21:15,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4561, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4760, PETRI_PLACES=439, PETRI_TRANSITIONS=397} [2024-06-27 18:21:15,133 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 397 predicate places. [2024-06-27 18:21:15,133 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 397 transitions, 4760 flow [2024-06-27 18:21:15,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:15,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:15,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:15,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 18:21:15,134 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:15,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1293089347, now seen corresponding path program 13 times [2024-06-27 18:21:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:15,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740821180] [2024-06-27 18:21:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:15,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:16,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:16,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740821180] [2024-06-27 18:21:16,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740821180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:16,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:16,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:16,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419321674] [2024-06-27 18:21:16,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:16,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:16,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:16,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:16,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 397 transitions, 4760 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:16,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:16,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:16,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:17,730 INFO L124 PetriNetUnfolderBase]: 2876/5666 cut-off events. [2024-06-27 18:21:17,730 INFO L125 PetriNetUnfolderBase]: For 265384/265384 co-relation queries the response was YES. [2024-06-27 18:21:17,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28527 conditions, 5666 events. 2876/5666 cut-off events. For 265384/265384 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 43150 event pairs, 811 based on Foata normal form. 2/5289 useless extension candidates. Maximal degree in co-relation 28329. Up to 4623 conditions per place. [2024-06-27 18:21:17,795 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 341 selfloop transitions, 78 changer transitions 0/427 dead transitions. [2024-06-27 18:21:17,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 427 transitions, 5722 flow [2024-06-27 18:21:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-27 18:21:17,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4232456140350877 [2024-06-27 18:21:17,796 INFO L175 Difference]: Start difference. First operand has 439 places, 397 transitions, 4760 flow. Second operand 12 states and 193 transitions. [2024-06-27 18:21:17,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 427 transitions, 5722 flow [2024-06-27 18:21:19,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 427 transitions, 5567 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:19,411 INFO L231 Difference]: Finished difference. Result has 444 places, 400 transitions, 4828 flow [2024-06-27 18:21:19,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4605, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4828, PETRI_PLACES=444, PETRI_TRANSITIONS=400} [2024-06-27 18:21:19,411 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 402 predicate places. [2024-06-27 18:21:19,411 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 400 transitions, 4828 flow [2024-06-27 18:21:19,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:19,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:19,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:19,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 18:21:19,412 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:19,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:19,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1086153466, now seen corresponding path program 9 times [2024-06-27 18:21:19,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:19,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088199562] [2024-06-27 18:21:19,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:19,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:19,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:20,445 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 18:21:20,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:20,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088199562] [2024-06-27 18:21:20,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088199562] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:20,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:20,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:20,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910396875] [2024-06-27 18:21:20,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:20,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:20,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:20,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:20,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:20,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:20,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 400 transitions, 4828 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:20,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:20,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:20,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:21,923 INFO L124 PetriNetUnfolderBase]: 2913/5749 cut-off events. [2024-06-27 18:21:21,923 INFO L125 PetriNetUnfolderBase]: For 289247/289247 co-relation queries the response was YES. [2024-06-27 18:21:21,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29163 conditions, 5749 events. 2913/5749 cut-off events. For 289247/289247 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 43994 event pairs, 705 based on Foata normal form. 2/5369 useless extension candidates. Maximal degree in co-relation 28964. Up to 4405 conditions per place. [2024-06-27 18:21:22,001 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 353 selfloop transitions, 76 changer transitions 0/437 dead transitions. [2024-06-27 18:21:22,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 437 transitions, 6116 flow [2024-06-27 18:21:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:22,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:21:22,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569377990430622 [2024-06-27 18:21:22,002 INFO L175 Difference]: Start difference. First operand has 444 places, 400 transitions, 4828 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:21:22,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 437 transitions, 6116 flow [2024-06-27 18:21:23,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 437 transitions, 5919 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 18:21:23,946 INFO L231 Difference]: Finished difference. Result has 445 places, 402 transitions, 4831 flow [2024-06-27 18:21:23,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4633, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4831, PETRI_PLACES=445, PETRI_TRANSITIONS=402} [2024-06-27 18:21:23,946 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 403 predicate places. [2024-06-27 18:21:23,946 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 402 transitions, 4831 flow [2024-06-27 18:21:23,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:23,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:23,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:23,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 18:21:23,947 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:23,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:23,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1086430172, now seen corresponding path program 14 times [2024-06-27 18:21:23,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:23,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636710859] [2024-06-27 18:21:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:23,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:25,041 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 18:21:25,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:25,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636710859] [2024-06-27 18:21:25,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636710859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:25,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:25,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:25,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593246111] [2024-06-27 18:21:25,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:25,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:25,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:25,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:25,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:25,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:25,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 402 transitions, 4831 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:25,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:25,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:25,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:26,703 INFO L124 PetriNetUnfolderBase]: 2937/5787 cut-off events. [2024-06-27 18:21:26,703 INFO L125 PetriNetUnfolderBase]: For 292153/292153 co-relation queries the response was YES. [2024-06-27 18:21:26,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29408 conditions, 5787 events. 2937/5787 cut-off events. For 292153/292153 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 44247 event pairs, 685 based on Foata normal form. 2/5399 useless extension candidates. Maximal degree in co-relation 29209. Up to 4172 conditions per place. [2024-06-27 18:21:26,781 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 315 selfloop transitions, 113 changer transitions 0/436 dead transitions. [2024-06-27 18:21:26,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 436 transitions, 5853 flow [2024-06-27 18:21:26,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:26,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:26,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-27 18:21:26,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 18:21:26,782 INFO L175 Difference]: Start difference. First operand has 445 places, 402 transitions, 4831 flow. Second operand 12 states and 204 transitions. [2024-06-27 18:21:26,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 436 transitions, 5853 flow [2024-06-27 18:21:28,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 436 transitions, 5744 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 18:21:28,582 INFO L231 Difference]: Finished difference. Result has 450 places, 406 transitions, 5043 flow [2024-06-27 18:21:28,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4722, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5043, PETRI_PLACES=450, PETRI_TRANSITIONS=406} [2024-06-27 18:21:28,582 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 408 predicate places. [2024-06-27 18:21:28,583 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 406 transitions, 5043 flow [2024-06-27 18:21:28,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:28,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:28,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:28,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 18:21:28,583 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:28,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:28,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1093572076, now seen corresponding path program 10 times [2024-06-27 18:21:28,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827924810] [2024-06-27 18:21:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:28,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:29,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:29,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827924810] [2024-06-27 18:21:29,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827924810] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:29,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:29,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:29,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272416084] [2024-06-27 18:21:29,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:29,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:29,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:29,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:29,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:29,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:29,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 406 transitions, 5043 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:29,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:29,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:29,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:31,142 INFO L124 PetriNetUnfolderBase]: 2934/5781 cut-off events. [2024-06-27 18:21:31,142 INFO L125 PetriNetUnfolderBase]: For 275509/275509 co-relation queries the response was YES. [2024-06-27 18:21:31,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29400 conditions, 5781 events. 2934/5781 cut-off events. For 275509/275509 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 44178 event pairs, 729 based on Foata normal form. 2/5395 useless extension candidates. Maximal degree in co-relation 29199. Up to 4492 conditions per place. [2024-06-27 18:21:31,215 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 353 selfloop transitions, 77 changer transitions 0/438 dead transitions. [2024-06-27 18:21:31,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 438 transitions, 5999 flow [2024-06-27 18:21:31,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:21:31,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:21:31,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 18:21:31,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:21:31,216 INFO L175 Difference]: Start difference. First operand has 450 places, 406 transitions, 5043 flow. Second operand 11 states and 190 transitions. [2024-06-27 18:21:31,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 438 transitions, 5999 flow [2024-06-27 18:21:32,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 438 transitions, 5739 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 18:21:32,784 INFO L231 Difference]: Finished difference. Result has 453 places, 406 transitions, 4941 flow [2024-06-27 18:21:32,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4783, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4941, PETRI_PLACES=453, PETRI_TRANSITIONS=406} [2024-06-27 18:21:32,784 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 411 predicate places. [2024-06-27 18:21:32,784 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 406 transitions, 4941 flow [2024-06-27 18:21:32,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:32,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:32,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:32,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 18:21:32,785 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:32,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:32,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1293089192, now seen corresponding path program 15 times [2024-06-27 18:21:32,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:32,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440777383] [2024-06-27 18:21:32,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:32,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440777383] [2024-06-27 18:21:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440777383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:33,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:33,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:33,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128334956] [2024-06-27 18:21:33,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:33,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:33,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:33,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:33,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:33,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:33,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 406 transitions, 4941 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:33,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:33,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:33,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:35,358 INFO L124 PetriNetUnfolderBase]: 2947/5801 cut-off events. [2024-06-27 18:21:35,358 INFO L125 PetriNetUnfolderBase]: For 281192/281192 co-relation queries the response was YES. [2024-06-27 18:21:35,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29436 conditions, 5801 events. 2947/5801 cut-off events. For 281192/281192 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 44354 event pairs, 669 based on Foata normal form. 2/5410 useless extension candidates. Maximal degree in co-relation 29234. Up to 4171 conditions per place. [2024-06-27 18:21:35,433 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 311 selfloop transitions, 123 changer transitions 0/442 dead transitions. [2024-06-27 18:21:35,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 442 transitions, 6006 flow [2024-06-27 18:21:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:21:35,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:21:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 217 transitions. [2024-06-27 18:21:35,435 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392712550607287 [2024-06-27 18:21:35,435 INFO L175 Difference]: Start difference. First operand has 453 places, 406 transitions, 4941 flow. Second operand 13 states and 217 transitions. [2024-06-27 18:21:35,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 442 transitions, 6006 flow [2024-06-27 18:21:37,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 442 transitions, 5829 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:21:37,131 INFO L231 Difference]: Finished difference. Result has 456 places, 409 transitions, 5136 flow [2024-06-27 18:21:37,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4764, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5136, PETRI_PLACES=456, PETRI_TRANSITIONS=409} [2024-06-27 18:21:37,131 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 414 predicate places. [2024-06-27 18:21:37,131 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 409 transitions, 5136 flow [2024-06-27 18:21:37,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:37,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:37,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:37,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 18:21:37,132 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:37,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1093787402, now seen corresponding path program 16 times [2024-06-27 18:21:37,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:37,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450671274] [2024-06-27 18:21:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:37,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:38,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:38,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:38,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450671274] [2024-06-27 18:21:38,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450671274] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:38,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:38,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:38,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896116741] [2024-06-27 18:21:38,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:38,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:38,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:38,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:38,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:38,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:38,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 409 transitions, 5136 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:38,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:38,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:38,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:40,168 INFO L124 PetriNetUnfolderBase]: 2977/5845 cut-off events. [2024-06-27 18:21:40,168 INFO L125 PetriNetUnfolderBase]: For 310095/310095 co-relation queries the response was YES. [2024-06-27 18:21:40,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30546 conditions, 5845 events. 2977/5845 cut-off events. For 310095/310095 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 44617 event pairs, 676 based on Foata normal form. 2/5448 useless extension candidates. Maximal degree in co-relation 30342. Up to 4145 conditions per place. [2024-06-27 18:21:40,241 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 315 selfloop transitions, 122 changer transitions 0/445 dead transitions. [2024-06-27 18:21:40,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 445 transitions, 6544 flow [2024-06-27 18:21:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:40,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:40,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 209 transitions. [2024-06-27 18:21:40,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:21:40,242 INFO L175 Difference]: Start difference. First operand has 456 places, 409 transitions, 5136 flow. Second operand 12 states and 209 transitions. [2024-06-27 18:21:40,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 445 transitions, 6544 flow [2024-06-27 18:21:42,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 445 transitions, 6220 flow, removed 43 selfloop flow, removed 10 redundant places. [2024-06-27 18:21:42,209 INFO L231 Difference]: Finished difference. Result has 459 places, 413 transitions, 5238 flow [2024-06-27 18:21:42,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4812, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5238, PETRI_PLACES=459, PETRI_TRANSITIONS=413} [2024-06-27 18:21:42,210 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 417 predicate places. [2024-06-27 18:21:42,210 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 413 transitions, 5238 flow [2024-06-27 18:21:42,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:42,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:42,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:42,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 18:21:42,211 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:42,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:42,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1287726812, now seen corresponding path program 17 times [2024-06-27 18:21:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:42,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162838780] [2024-06-27 18:21:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:42,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:43,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:43,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:43,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162838780] [2024-06-27 18:21:43,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162838780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:43,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:43,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:43,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075917061] [2024-06-27 18:21:43,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:43,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:43,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:43,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:43,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:43,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:43,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 413 transitions, 5238 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:43,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:43,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:43,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:45,225 INFO L124 PetriNetUnfolderBase]: 3007/5889 cut-off events. [2024-06-27 18:21:45,226 INFO L125 PetriNetUnfolderBase]: For 336925/336925 co-relation queries the response was YES. [2024-06-27 18:21:45,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31322 conditions, 5889 events. 3007/5889 cut-off events. For 336925/336925 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 44950 event pairs, 676 based on Foata normal form. 2/5486 useless extension candidates. Maximal degree in co-relation 31116. Up to 4202 conditions per place. [2024-06-27 18:21:45,299 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 319 selfloop transitions, 122 changer transitions 0/449 dead transitions. [2024-06-27 18:21:45,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 449 transitions, 6664 flow [2024-06-27 18:21:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:45,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:45,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 208 transitions. [2024-06-27 18:21:45,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45614035087719296 [2024-06-27 18:21:45,301 INFO L175 Difference]: Start difference. First operand has 459 places, 413 transitions, 5238 flow. Second operand 12 states and 208 transitions. [2024-06-27 18:21:45,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 449 transitions, 6664 flow [2024-06-27 18:21:47,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 449 transitions, 6342 flow, removed 45 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:47,326 INFO L231 Difference]: Finished difference. Result has 463 places, 417 transitions, 5347 flow [2024-06-27 18:21:47,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4916, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5347, PETRI_PLACES=463, PETRI_TRANSITIONS=417} [2024-06-27 18:21:47,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 421 predicate places. [2024-06-27 18:21:47,327 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 417 transitions, 5347 flow [2024-06-27 18:21:47,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:47,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:47,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:47,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 18:21:47,327 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:47,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:47,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1093787557, now seen corresponding path program 14 times [2024-06-27 18:21:47,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:47,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912909227] [2024-06-27 18:21:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:47,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:48,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:48,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912909227] [2024-06-27 18:21:48,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912909227] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:48,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:48,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:48,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450845522] [2024-06-27 18:21:48,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:48,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:48,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:48,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:48,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:48,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:48,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 417 transitions, 5347 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:48,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:48,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:48,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:50,161 INFO L124 PetriNetUnfolderBase]: 3108/6146 cut-off events. [2024-06-27 18:21:50,161 INFO L125 PetriNetUnfolderBase]: For 465362/465362 co-relation queries the response was YES. [2024-06-27 18:21:50,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31851 conditions, 6146 events. 3108/6146 cut-off events. For 465362/465362 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 47611 event pairs, 730 based on Foata normal form. 16/5744 useless extension candidates. Maximal degree in co-relation 31643. Up to 4228 conditions per place. [2024-06-27 18:21:50,226 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 334 selfloop transitions, 115 changer transitions 0/457 dead transitions. [2024-06-27 18:21:50,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 457 transitions, 6427 flow [2024-06-27 18:21:50,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:50,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 215 transitions. [2024-06-27 18:21:50,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47149122807017546 [2024-06-27 18:21:50,227 INFO L175 Difference]: Start difference. First operand has 463 places, 417 transitions, 5347 flow. Second operand 12 states and 215 transitions. [2024-06-27 18:21:50,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 457 transitions, 6427 flow [2024-06-27 18:21:52,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 457 transitions, 6058 flow, removed 67 selfloop flow, removed 9 redundant places. [2024-06-27 18:21:52,154 INFO L231 Difference]: Finished difference. Result has 467 places, 418 transitions, 5273 flow [2024-06-27 18:21:52,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=4978, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5273, PETRI_PLACES=467, PETRI_TRANSITIONS=418} [2024-06-27 18:21:52,154 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 425 predicate places. [2024-06-27 18:21:52,155 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 418 transitions, 5273 flow [2024-06-27 18:21:52,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:52,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:52,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:52,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 18:21:52,155 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:52,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash -176956311, now seen corresponding path program 15 times [2024-06-27 18:21:52,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:52,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749998140] [2024-06-27 18:21:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:52,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:52,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:53,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749998140] [2024-06-27 18:21:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749998140] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:53,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:53,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:53,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061831660] [2024-06-27 18:21:53,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:53,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:53,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:53,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:53,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:53,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:53,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 418 transitions, 5273 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:53,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:53,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:53,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:21:55,023 INFO L124 PetriNetUnfolderBase]: 3249/6481 cut-off events. [2024-06-27 18:21:55,023 INFO L125 PetriNetUnfolderBase]: For 484134/484134 co-relation queries the response was YES. [2024-06-27 18:21:55,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35184 conditions, 6481 events. 3249/6481 cut-off events. For 484134/484134 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 51090 event pairs, 764 based on Foata normal form. 2/6050 useless extension candidates. Maximal degree in co-relation 34974. Up to 4066 conditions per place. [2024-06-27 18:21:55,112 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 315 selfloop transitions, 141 changer transitions 0/464 dead transitions. [2024-06-27 18:21:55,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 464 transitions, 7023 flow [2024-06-27 18:21:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:21:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:21:55,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2024-06-27 18:21:55,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4758771929824561 [2024-06-27 18:21:55,113 INFO L175 Difference]: Start difference. First operand has 467 places, 418 transitions, 5273 flow. Second operand 12 states and 217 transitions. [2024-06-27 18:21:55,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 464 transitions, 7023 flow [2024-06-27 18:21:57,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 464 transitions, 6763 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 18:21:57,662 INFO L231 Difference]: Finished difference. Result has 469 places, 420 transitions, 5389 flow [2024-06-27 18:21:57,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5013, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5389, PETRI_PLACES=469, PETRI_TRANSITIONS=420} [2024-06-27 18:21:57,662 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 427 predicate places. [2024-06-27 18:21:57,662 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 420 transitions, 5389 flow [2024-06-27 18:21:57,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:57,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:21:57,663 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:21:57,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 18:21:57,663 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:21:57,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:21:57,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1293233342, now seen corresponding path program 18 times [2024-06-27 18:21:57,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:21:57,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715026376] [2024-06-27 18:21:57,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:21:57,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:21:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:21:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:21:58,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:21:58,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715026376] [2024-06-27 18:21:58,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715026376] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:21:58,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:21:58,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:21:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097861146] [2024-06-27 18:21:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:21:58,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:21:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:21:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:21:58,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:21:58,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:21:58,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 420 transitions, 5389 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:21:58,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:21:58,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:21:58,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:00,583 INFO L124 PetriNetUnfolderBase]: 3279/6493 cut-off events. [2024-06-27 18:22:00,584 INFO L125 PetriNetUnfolderBase]: For 518181/518181 co-relation queries the response was YES. [2024-06-27 18:22:00,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36271 conditions, 6493 events. 3279/6493 cut-off events. For 518181/518181 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 51119 event pairs, 800 based on Foata normal form. 2/6052 useless extension candidates. Maximal degree in co-relation 36060. Up to 4641 conditions per place. [2024-06-27 18:22:00,670 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 307 selfloop transitions, 146 changer transitions 0/461 dead transitions. [2024-06-27 18:22:00,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 461 transitions, 6911 flow [2024-06-27 18:22:00,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-27 18:22:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-27 18:22:00,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 234 transitions. [2024-06-27 18:22:00,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398496240601504 [2024-06-27 18:22:00,672 INFO L175 Difference]: Start difference. First operand has 469 places, 420 transitions, 5389 flow. Second operand 14 states and 234 transitions. [2024-06-27 18:22:00,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 461 transitions, 6911 flow [2024-06-27 18:22:03,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 461 transitions, 6686 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-27 18:22:03,549 INFO L231 Difference]: Finished difference. Result has 475 places, 424 transitions, 5688 flow [2024-06-27 18:22:03,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5164, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5688, PETRI_PLACES=475, PETRI_TRANSITIONS=424} [2024-06-27 18:22:03,550 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 433 predicate places. [2024-06-27 18:22:03,550 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 424 transitions, 5688 flow [2024-06-27 18:22:03,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:03,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:03,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:03,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 18:22:03,551 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:03,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:03,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1293233497, now seen corresponding path program 16 times [2024-06-27 18:22:03,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:03,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350862779] [2024-06-27 18:22:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:03,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:04,612 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 18:22:04,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:04,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350862779] [2024-06-27 18:22:04,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350862779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:04,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:04,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:04,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906077958] [2024-06-27 18:22:04,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:04,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:04,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:04,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:04,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:04,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:04,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 424 transitions, 5688 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:04,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:04,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:04,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:06,684 INFO L124 PetriNetUnfolderBase]: 3384/6757 cut-off events. [2024-06-27 18:22:06,684 INFO L125 PetriNetUnfolderBase]: For 654925/654925 co-relation queries the response was YES. [2024-06-27 18:22:06,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37459 conditions, 6757 events. 3384/6757 cut-off events. For 654925/654925 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 53995 event pairs, 841 based on Foata normal form. 14/6315 useless extension candidates. Maximal degree in co-relation 37246. Up to 4667 conditions per place. [2024-06-27 18:22:06,775 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 320 selfloop transitions, 140 changer transitions 0/468 dead transitions. [2024-06-27 18:22:06,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 468 transitions, 7092 flow [2024-06-27 18:22:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:22:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:22:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 229 transitions. [2024-06-27 18:22:06,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46356275303643724 [2024-06-27 18:22:06,776 INFO L175 Difference]: Start difference. First operand has 475 places, 424 transitions, 5688 flow. Second operand 13 states and 229 transitions. [2024-06-27 18:22:06,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 468 transitions, 7092 flow [2024-06-27 18:22:09,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 468 transitions, 6817 flow, removed 60 selfloop flow, removed 10 redundant places. [2024-06-27 18:22:09,969 INFO L231 Difference]: Finished difference. Result has 478 places, 425 transitions, 5738 flow [2024-06-27 18:22:09,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5413, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5738, PETRI_PLACES=478, PETRI_TRANSITIONS=425} [2024-06-27 18:22:09,970 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 436 predicate places. [2024-06-27 18:22:09,970 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 425 transitions, 5738 flow [2024-06-27 18:22:09,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:09,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:09,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:09,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 18:22:09,971 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:09,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:09,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1287726967, now seen corresponding path program 17 times [2024-06-27 18:22:09,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:09,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993325759] [2024-06-27 18:22:09,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:09,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:10,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:10,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:10,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993325759] [2024-06-27 18:22:10,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993325759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:10,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:10,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:10,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510390401] [2024-06-27 18:22:10,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:10,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:10,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:10,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:11,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:11,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 425 transitions, 5738 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:11,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:11,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:11,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:13,000 INFO L124 PetriNetUnfolderBase]: 3485/7001 cut-off events. [2024-06-27 18:22:13,000 INFO L125 PetriNetUnfolderBase]: For 655202/655202 co-relation queries the response was YES. [2024-06-27 18:22:13,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38289 conditions, 7001 events. 3485/7001 cut-off events. For 655202/655202 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56734 event pairs, 911 based on Foata normal form. 16/6545 useless extension candidates. Maximal degree in co-relation 38074. Up to 4968 conditions per place. [2024-06-27 18:22:13,093 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 342 selfloop transitions, 115 changer transitions 0/465 dead transitions. [2024-06-27 18:22:13,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 465 transitions, 6828 flow [2024-06-27 18:22:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:22:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:22:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 214 transitions. [2024-06-27 18:22:13,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692982456140351 [2024-06-27 18:22:13,094 INFO L175 Difference]: Start difference. First operand has 478 places, 425 transitions, 5738 flow. Second operand 12 states and 214 transitions. [2024-06-27 18:22:13,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 465 transitions, 6828 flow [2024-06-27 18:22:16,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 465 transitions, 6489 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-06-27 18:22:16,139 INFO L231 Difference]: Finished difference. Result has 480 places, 426 transitions, 5682 flow [2024-06-27 18:22:16,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5399, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5682, PETRI_PLACES=480, PETRI_TRANSITIONS=426} [2024-06-27 18:22:16,139 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 438 predicate places. [2024-06-27 18:22:16,139 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 426 transitions, 5682 flow [2024-06-27 18:22:16,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:16,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:16,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:16,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 18:22:16,140 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:16,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:16,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1482448932, now seen corresponding path program 19 times [2024-06-27 18:22:16,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:16,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803963877] [2024-06-27 18:22:16,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:16,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:17,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:17,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:17,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803963877] [2024-06-27 18:22:17,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803963877] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:17,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:17,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:17,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062822505] [2024-06-27 18:22:17,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:17,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:17,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:17,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:17,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:17,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:17,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 426 transitions, 5682 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:17,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:17,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:17,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:19,192 INFO L124 PetriNetUnfolderBase]: 3520/7037 cut-off events. [2024-06-27 18:22:19,192 INFO L125 PetriNetUnfolderBase]: For 513733/513733 co-relation queries the response was YES. [2024-06-27 18:22:19,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38575 conditions, 7037 events. 3520/7037 cut-off events. For 513733/513733 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56994 event pairs, 880 based on Foata normal form. 2/6561 useless extension candidates. Maximal degree in co-relation 38358. Up to 5221 conditions per place. [2024-06-27 18:22:19,285 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 333 selfloop transitions, 121 changer transitions 0/462 dead transitions. [2024-06-27 18:22:19,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 462 transitions, 6820 flow [2024-06-27 18:22:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:22:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:22:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 202 transitions. [2024-06-27 18:22:19,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44298245614035087 [2024-06-27 18:22:19,286 INFO L175 Difference]: Start difference. First operand has 480 places, 426 transitions, 5682 flow. Second operand 12 states and 202 transitions. [2024-06-27 18:22:19,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 462 transitions, 6820 flow [2024-06-27 18:22:22,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 462 transitions, 6557 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 18:22:22,341 INFO L231 Difference]: Finished difference. Result has 482 places, 432 transitions, 5820 flow [2024-06-27 18:22:22,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5427, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5820, PETRI_PLACES=482, PETRI_TRANSITIONS=432} [2024-06-27 18:22:22,342 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 440 predicate places. [2024-06-27 18:22:22,342 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 432 transitions, 5820 flow [2024-06-27 18:22:22,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:22,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:22,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:22,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 18:22:22,342 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:22,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1482241542, now seen corresponding path program 20 times [2024-06-27 18:22:22,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:22,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557639282] [2024-06-27 18:22:22,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:23,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:23,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:23,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557639282] [2024-06-27 18:22:23,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557639282] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:23,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:23,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:23,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421062166] [2024-06-27 18:22:23,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:23,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:23,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:23,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:23,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:23,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:23,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 432 transitions, 5820 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:23,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:23,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:23,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:25,877 INFO L124 PetriNetUnfolderBase]: 3516/7032 cut-off events. [2024-06-27 18:22:25,877 INFO L125 PetriNetUnfolderBase]: For 491474/491474 co-relation queries the response was YES. [2024-06-27 18:22:25,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38058 conditions, 7032 events. 3516/7032 cut-off events. For 491474/491474 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 56958 event pairs, 867 based on Foata normal form. 2/6556 useless extension candidates. Maximal degree in co-relation 37840. Up to 5124 conditions per place. [2024-06-27 18:22:25,978 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 322 selfloop transitions, 133 changer transitions 0/463 dead transitions. [2024-06-27 18:22:25,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 463 transitions, 7120 flow [2024-06-27 18:22:25,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:22:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:22:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 204 transitions. [2024-06-27 18:22:25,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4473684210526316 [2024-06-27 18:22:25,979 INFO L175 Difference]: Start difference. First operand has 482 places, 432 transitions, 5820 flow. Second operand 12 states and 204 transitions. [2024-06-27 18:22:25,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 463 transitions, 7120 flow [2024-06-27 18:22:29,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 463 transitions, 6845 flow, removed 27 selfloop flow, removed 7 redundant places. [2024-06-27 18:22:29,138 INFO L231 Difference]: Finished difference. Result has 487 places, 432 transitions, 5816 flow [2024-06-27 18:22:29,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5545, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5816, PETRI_PLACES=487, PETRI_TRANSITIONS=432} [2024-06-27 18:22:29,138 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-27 18:22:29,138 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 432 transitions, 5816 flow [2024-06-27 18:22:29,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:29,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:29,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:29,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 18:22:29,139 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:29,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:29,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1482241387, now seen corresponding path program 18 times [2024-06-27 18:22:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:29,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999631854] [2024-06-27 18:22:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:29,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:29,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:30,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:30,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999631854] [2024-06-27 18:22:30,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999631854] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:30,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:30,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:30,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144782347] [2024-06-27 18:22:30,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:30,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:30,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:30,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:30,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:30,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:30,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 432 transitions, 5816 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:30,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:30,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:30,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:32,143 INFO L124 PetriNetUnfolderBase]: 3493/7009 cut-off events. [2024-06-27 18:22:32,143 INFO L125 PetriNetUnfolderBase]: For 472635/472635 co-relation queries the response was YES. [2024-06-27 18:22:32,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35359 conditions, 7009 events. 3493/7009 cut-off events. For 472635/472635 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 56748 event pairs, 858 based on Foata normal form. 16/6548 useless extension candidates. Maximal degree in co-relation 35140. Up to 4923 conditions per place. [2024-06-27 18:22:32,238 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 336 selfloop transitions, 126 changer transitions 0/470 dead transitions. [2024-06-27 18:22:32,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 470 transitions, 6876 flow [2024-06-27 18:22:32,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:22:32,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:22:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 210 transitions. [2024-06-27 18:22:32,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4605263157894737 [2024-06-27 18:22:32,239 INFO L175 Difference]: Start difference. First operand has 487 places, 432 transitions, 5816 flow. Second operand 12 states and 210 transitions. [2024-06-27 18:22:32,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 470 transitions, 6876 flow [2024-06-27 18:22:34,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 470 transitions, 6405 flow, removed 72 selfloop flow, removed 13 redundant places. [2024-06-27 18:22:34,814 INFO L231 Difference]: Finished difference. Result has 487 places, 432 transitions, 5620 flow [2024-06-27 18:22:34,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5345, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5620, PETRI_PLACES=487, PETRI_TRANSITIONS=432} [2024-06-27 18:22:34,814 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-27 18:22:34,814 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 432 transitions, 5620 flow [2024-06-27 18:22:34,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:34,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:34,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:34,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 18:22:34,815 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:34,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:34,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1748154148, now seen corresponding path program 11 times [2024-06-27 18:22:34,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:34,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489440812] [2024-06-27 18:22:34,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:34,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:35,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:35,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:35,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489440812] [2024-06-27 18:22:35,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489440812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:35,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:35,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230704711] [2024-06-27 18:22:35,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:35,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:35,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:36,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:36,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 432 transitions, 5620 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:36,001 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:36,001 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:36,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:37,879 INFO L124 PetriNetUnfolderBase]: 3521/7050 cut-off events. [2024-06-27 18:22:37,879 INFO L125 PetriNetUnfolderBase]: For 312260/312260 co-relation queries the response was YES. [2024-06-27 18:22:37,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35106 conditions, 7050 events. 3521/7050 cut-off events. For 312260/312260 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 57166 event pairs, 916 based on Foata normal form. 2/6571 useless extension candidates. Maximal degree in co-relation 34887. Up to 5597 conditions per place. [2024-06-27 18:22:37,979 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 373 selfloop transitions, 84 changer transitions 0/465 dead transitions. [2024-06-27 18:22:37,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 465 transitions, 6682 flow [2024-06-27 18:22:37,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:22:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:22:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:22:37,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 18:22:37,980 INFO L175 Difference]: Start difference. First operand has 487 places, 432 transitions, 5620 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:22:37,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 465 transitions, 6682 flow [2024-06-27 18:22:40,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 465 transitions, 6392 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 18:22:40,402 INFO L231 Difference]: Finished difference. Result has 487 places, 435 transitions, 5564 flow [2024-06-27 18:22:40,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5334, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5564, PETRI_PLACES=487, PETRI_TRANSITIONS=435} [2024-06-27 18:22:40,403 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 445 predicate places. [2024-06-27 18:22:40,403 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 435 transitions, 5564 flow [2024-06-27 18:22:40,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:40,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:40,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:40,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 18:22:40,404 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:40,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:40,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1489866178, now seen corresponding path program 12 times [2024-06-27 18:22:40,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:40,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528195188] [2024-06-27 18:22:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:41,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:41,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:41,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528195188] [2024-06-27 18:22:41,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528195188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:41,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:41,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:41,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24300848] [2024-06-27 18:22:41,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:41,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:41,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:41,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:41,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 435 transitions, 5564 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:41,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:41,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:41,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:43,357 INFO L124 PetriNetUnfolderBase]: 3538/7089 cut-off events. [2024-06-27 18:22:43,357 INFO L125 PetriNetUnfolderBase]: For 308490/308490 co-relation queries the response was YES. [2024-06-27 18:22:43,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35007 conditions, 7089 events. 3538/7089 cut-off events. For 308490/308490 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 57590 event pairs, 926 based on Foata normal form. 2/6608 useless extension candidates. Maximal degree in co-relation 34787. Up to 5628 conditions per place. [2024-06-27 18:22:43,460 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 382 selfloop transitions, 77 changer transitions 0/467 dead transitions. [2024-06-27 18:22:43,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 467 transitions, 6598 flow [2024-06-27 18:22:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:22:43,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:22:43,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 186 transitions. [2024-06-27 18:22:43,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449760765550239 [2024-06-27 18:22:43,462 INFO L175 Difference]: Start difference. First operand has 487 places, 435 transitions, 5564 flow. Second operand 11 states and 186 transitions. [2024-06-27 18:22:43,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 467 transitions, 6598 flow [2024-06-27 18:22:46,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 467 transitions, 6441 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 18:22:46,080 INFO L231 Difference]: Finished difference. Result has 490 places, 436 transitions, 5591 flow [2024-06-27 18:22:46,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5407, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5591, PETRI_PLACES=490, PETRI_TRANSITIONS=436} [2024-06-27 18:22:46,080 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 448 predicate places. [2024-06-27 18:22:46,080 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 436 transitions, 5591 flow [2024-06-27 18:22:46,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:46,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:46,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:46,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 18:22:46,081 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:46,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:46,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1748163448, now seen corresponding path program 13 times [2024-06-27 18:22:46,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:46,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962983099] [2024-06-27 18:22:46,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:46,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:47,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:47,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962983099] [2024-06-27 18:22:47,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962983099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:47,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:47,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:47,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175187179] [2024-06-27 18:22:47,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:47,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:47,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:47,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:47,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:47,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:47,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 436 transitions, 5591 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:47,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:47,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:47,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:49,335 INFO L124 PetriNetUnfolderBase]: 3555/7126 cut-off events. [2024-06-27 18:22:49,335 INFO L125 PetriNetUnfolderBase]: For 312885/312885 co-relation queries the response was YES. [2024-06-27 18:22:49,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35165 conditions, 7126 events. 3555/7126 cut-off events. For 312885/312885 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 57985 event pairs, 928 based on Foata normal form. 2/6644 useless extension candidates. Maximal degree in co-relation 34945. Up to 5566 conditions per place. [2024-06-27 18:22:49,426 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 372 selfloop transitions, 90 changer transitions 0/470 dead transitions. [2024-06-27 18:22:49,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 470 transitions, 6643 flow [2024-06-27 18:22:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:22:49,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:22:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 188 transitions. [2024-06-27 18:22:49,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44976076555023925 [2024-06-27 18:22:49,428 INFO L175 Difference]: Start difference. First operand has 490 places, 436 transitions, 5591 flow. Second operand 11 states and 188 transitions. [2024-06-27 18:22:49,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 470 transitions, 6643 flow [2024-06-27 18:22:51,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 470 transitions, 6430 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-27 18:22:51,870 INFO L231 Difference]: Finished difference. Result has 491 places, 437 transitions, 5590 flow [2024-06-27 18:22:51,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5378, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5590, PETRI_PLACES=491, PETRI_TRANSITIONS=437} [2024-06-27 18:22:51,871 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 449 predicate places. [2024-06-27 18:22:51,871 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 437 transitions, 5590 flow [2024-06-27 18:22:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:51,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:51,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:51,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 18:22:51,872 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:51,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1489875478, now seen corresponding path program 14 times [2024-06-27 18:22:51,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:51,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368385321] [2024-06-27 18:22:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:51,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:52,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:52,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:52,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368385321] [2024-06-27 18:22:52,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368385321] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:52,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:52,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:52,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460314863] [2024-06-27 18:22:52,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:52,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:52,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:52,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:52,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:53,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:53,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 437 transitions, 5590 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:53,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:53,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:53,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:22:54,792 INFO L124 PetriNetUnfolderBase]: 3572/7159 cut-off events. [2024-06-27 18:22:54,792 INFO L125 PetriNetUnfolderBase]: For 316775/316775 co-relation queries the response was YES. [2024-06-27 18:22:54,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35348 conditions, 7159 events. 3572/7159 cut-off events. For 316775/316775 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 58361 event pairs, 942 based on Foata normal form. 2/6678 useless extension candidates. Maximal degree in co-relation 35127. Up to 5617 conditions per place. [2024-06-27 18:22:54,888 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 385 selfloop transitions, 79 changer transitions 0/472 dead transitions. [2024-06-27 18:22:54,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 501 places, 472 transitions, 6652 flow [2024-06-27 18:22:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:22:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:22:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:22:54,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45215311004784686 [2024-06-27 18:22:54,889 INFO L175 Difference]: Start difference. First operand has 491 places, 437 transitions, 5590 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:22:54,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 501 places, 472 transitions, 6652 flow [2024-06-27 18:22:57,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 472 transitions, 6450 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 18:22:57,425 INFO L231 Difference]: Finished difference. Result has 493 places, 438 transitions, 5580 flow [2024-06-27 18:22:57,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5388, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5580, PETRI_PLACES=493, PETRI_TRANSITIONS=438} [2024-06-27 18:22:57,426 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 451 predicate places. [2024-06-27 18:22:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 438 transitions, 5580 flow [2024-06-27 18:22:57,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:57,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:22:57,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:22:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 18:22:57,427 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:22:57,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:22:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1748480578, now seen corresponding path program 15 times [2024-06-27 18:22:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:22:57,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436121087] [2024-06-27 18:22:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:22:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:22:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:22:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:22:58,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:22:58,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436121087] [2024-06-27 18:22:58,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436121087] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:22:58,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:22:58,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:22:58,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366930473] [2024-06-27 18:22:58,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:22:58,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:22:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:22:58,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:22:58,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:22:58,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:22:58,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 438 transitions, 5580 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:22:58,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:22:58,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:22:58,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:00,803 INFO L124 PetriNetUnfolderBase]: 3589/7191 cut-off events. [2024-06-27 18:23:00,804 INFO L125 PetriNetUnfolderBase]: For 321231/321231 co-relation queries the response was YES. [2024-06-27 18:23:00,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35488 conditions, 7191 events. 3589/7191 cut-off events. For 321231/321231 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 58684 event pairs, 927 based on Foata normal form. 2/6707 useless extension candidates. Maximal degree in co-relation 35266. Up to 5200 conditions per place. [2024-06-27 18:23:00,907 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 364 selfloop transitions, 103 changer transitions 0/475 dead transitions. [2024-06-27 18:23:00,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 475 transitions, 6660 flow [2024-06-27 18:23:00,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:00,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 18:23:00,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:23:00,909 INFO L175 Difference]: Start difference. First operand has 493 places, 438 transitions, 5580 flow. Second operand 11 states and 190 transitions. [2024-06-27 18:23:00,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 475 transitions, 6660 flow [2024-06-27 18:23:03,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 494 places, 475 transitions, 6478 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 18:23:03,619 INFO L231 Difference]: Finished difference. Result has 495 places, 439 transitions, 5640 flow [2024-06-27 18:23:03,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5398, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5640, PETRI_PLACES=495, PETRI_TRANSITIONS=439} [2024-06-27 18:23:03,620 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 453 predicate places. [2024-06-27 18:23:03,620 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 439 transitions, 5640 flow [2024-06-27 18:23:03,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:03,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:03,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:03,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 18:23:03,620 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:03,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:03,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1936967996, now seen corresponding path program 16 times [2024-06-27 18:23:03,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:03,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367247929] [2024-06-27 18:23:03,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:03,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:03,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:04,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:04,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:04,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367247929] [2024-06-27 18:23:04,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367247929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:04,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:04,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:23:04,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607324644] [2024-06-27 18:23:04,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:04,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:23:04,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:04,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:23:04,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:23:04,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:04,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 439 transitions, 5640 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:04,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:04,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:04,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:06,776 INFO L124 PetriNetUnfolderBase]: 3617/7263 cut-off events. [2024-06-27 18:23:06,776 INFO L125 PetriNetUnfolderBase]: For 326011/326011 co-relation queries the response was YES. [2024-06-27 18:23:06,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36047 conditions, 7263 events. 3617/7263 cut-off events. For 326011/326011 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 59492 event pairs, 1075 based on Foata normal form. 2/6771 useless extension candidates. Maximal degree in co-relation 35824. Up to 5999 conditions per place. [2024-06-27 18:23:06,881 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 413 selfloop transitions, 48 changer transitions 0/469 dead transitions. [2024-06-27 18:23:06,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 469 transitions, 6710 flow [2024-06-27 18:23:06,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:06,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:23:06,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-27 18:23:06,883 INFO L175 Difference]: Start difference. First operand has 495 places, 439 transitions, 5640 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:23:06,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 469 transitions, 6710 flow [2024-06-27 18:23:09,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 469 transitions, 6474 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 18:23:09,779 INFO L231 Difference]: Finished difference. Result has 498 places, 443 transitions, 5591 flow [2024-06-27 18:23:09,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5408, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5591, PETRI_PLACES=498, PETRI_TRANSITIONS=443} [2024-06-27 18:23:09,779 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 456 predicate places. [2024-06-27 18:23:09,779 INFO L495 AbstractCegarLoop]: Abstraction has has 498 places, 443 transitions, 5591 flow [2024-06-27 18:23:09,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:09,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:09,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:09,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 18:23:09,780 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:09,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2026597854, now seen corresponding path program 17 times [2024-06-27 18:23:09,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:09,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507734151] [2024-06-27 18:23:09,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:09,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:09,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:10,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:10,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507734151] [2024-06-27 18:23:10,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507734151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:10,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:10,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:23:10,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663194135] [2024-06-27 18:23:10,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:10,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:23:10,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:10,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:23:10,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:23:10,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:10,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 498 places, 443 transitions, 5591 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:10,885 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:10,885 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:10,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:12,966 INFO L124 PetriNetUnfolderBase]: 3645/7320 cut-off events. [2024-06-27 18:23:12,966 INFO L125 PetriNetUnfolderBase]: For 329717/329717 co-relation queries the response was YES. [2024-06-27 18:23:13,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36010 conditions, 7320 events. 3645/7320 cut-off events. For 329717/329717 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 60077 event pairs, 1108 based on Foata normal form. 2/6824 useless extension candidates. Maximal degree in co-relation 35785. Up to 6224 conditions per place. [2024-06-27 18:23:13,070 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 440 selfloop transitions, 23 changer transitions 0/471 dead transitions. [2024-06-27 18:23:13,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 471 transitions, 6657 flow [2024-06-27 18:23:13,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:13,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 170 transitions. [2024-06-27 18:23:13,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40669856459330145 [2024-06-27 18:23:13,071 INFO L175 Difference]: Start difference. First operand has 498 places, 443 transitions, 5591 flow. Second operand 11 states and 170 transitions. [2024-06-27 18:23:13,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 471 transitions, 6657 flow [2024-06-27 18:23:15,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 471 transitions, 6533 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:15,742 INFO L231 Difference]: Finished difference. Result has 501 places, 446 transitions, 5591 flow [2024-06-27 18:23:15,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5471, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5591, PETRI_PLACES=501, PETRI_TRANSITIONS=446} [2024-06-27 18:23:15,742 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 459 predicate places. [2024-06-27 18:23:15,742 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 446 transitions, 5591 flow [2024-06-27 18:23:15,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:15,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:15,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:15,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 18:23:15,743 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:15,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash -787006748, now seen corresponding path program 18 times [2024-06-27 18:23:15,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:15,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130011462] [2024-06-27 18:23:15,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:15,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:16,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:16,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:16,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130011462] [2024-06-27 18:23:16,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130011462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:16,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:16,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:23:16,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512974995] [2024-06-27 18:23:16,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:16,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:23:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:23:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:23:16,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:16,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 446 transitions, 5591 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:16,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:16,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:16,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:18,623 INFO L124 PetriNetUnfolderBase]: 3673/7376 cut-off events. [2024-06-27 18:23:18,624 INFO L125 PetriNetUnfolderBase]: For 332824/332824 co-relation queries the response was YES. [2024-06-27 18:23:18,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36185 conditions, 7376 events. 3673/7376 cut-off events. For 332824/332824 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 60621 event pairs, 1112 based on Foata normal form. 2/6877 useless extension candidates. Maximal degree in co-relation 35961. Up to 6122 conditions per place. [2024-06-27 18:23:18,724 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 421 selfloop transitions, 46 changer transitions 0/475 dead transitions. [2024-06-27 18:23:18,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 475 transitions, 6667 flow [2024-06-27 18:23:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:23:18,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-27 18:23:18,725 INFO L175 Difference]: Start difference. First operand has 501 places, 446 transitions, 5591 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:23:18,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 475 transitions, 6667 flow [2024-06-27 18:23:21,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 475 transitions, 6595 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:21,336 INFO L231 Difference]: Finished difference. Result has 504 places, 449 transitions, 5687 flow [2024-06-27 18:23:21,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5519, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=446, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5687, PETRI_PLACES=504, PETRI_TRANSITIONS=449} [2024-06-27 18:23:21,336 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 462 predicate places. [2024-06-27 18:23:21,336 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 449 transitions, 5687 flow [2024-06-27 18:23:21,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:21,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:21,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:21,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 18:23:21,337 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:21,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash -71562828, now seen corresponding path program 19 times [2024-06-27 18:23:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:21,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768869876] [2024-06-27 18:23:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:21,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:22,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:22,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768869876] [2024-06-27 18:23:22,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768869876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:22,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:22,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:23:22,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130216899] [2024-06-27 18:23:22,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:22,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:23:22,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:22,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:23:22,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:23:22,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:22,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 449 transitions, 5687 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:22,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:22,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:22,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:24,390 INFO L124 PetriNetUnfolderBase]: 3690/7413 cut-off events. [2024-06-27 18:23:24,390 INFO L125 PetriNetUnfolderBase]: For 338221/338221 co-relation queries the response was YES. [2024-06-27 18:23:24,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36436 conditions, 7413 events. 3690/7413 cut-off events. For 338221/338221 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 60971 event pairs, 1106 based on Foata normal form. 2/6911 useless extension candidates. Maximal degree in co-relation 36212. Up to 6287 conditions per place. [2024-06-27 18:23:24,494 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 455 selfloop transitions, 18 changer transitions 0/481 dead transitions. [2024-06-27 18:23:24,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 481 transitions, 6763 flow [2024-06-27 18:23:24,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:24,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:23:24,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41148325358851673 [2024-06-27 18:23:24,495 INFO L175 Difference]: Start difference. First operand has 504 places, 449 transitions, 5687 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:23:24,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 481 transitions, 6763 flow [2024-06-27 18:23:27,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 481 transitions, 6653 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:27,281 INFO L231 Difference]: Finished difference. Result has 507 places, 450 transitions, 5657 flow [2024-06-27 18:23:27,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5577, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5657, PETRI_PLACES=507, PETRI_TRANSITIONS=450} [2024-06-27 18:23:27,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 465 predicate places. [2024-06-27 18:23:27,282 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 450 transitions, 5657 flow [2024-06-27 18:23:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:27,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:27,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:27,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 18:23:27,282 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:27,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:27,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1929099968, now seen corresponding path program 20 times [2024-06-27 18:23:27,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:27,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335620994] [2024-06-27 18:23:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:27,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:28,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:28,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:28,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335620994] [2024-06-27 18:23:28,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335620994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:28,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:28,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:23:28,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542223209] [2024-06-27 18:23:28,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:28,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:23:28,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:28,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:23:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:23:28,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:28,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 450 transitions, 5657 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:28,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:28,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:28,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:30,502 INFO L124 PetriNetUnfolderBase]: 3727/7491 cut-off events. [2024-06-27 18:23:30,502 INFO L125 PetriNetUnfolderBase]: For 372023/372023 co-relation queries the response was YES. [2024-06-27 18:23:30,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37224 conditions, 7491 events. 3727/7491 cut-off events. For 372023/372023 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 61854 event pairs, 1114 based on Foata normal form. 2/6989 useless extension candidates. Maximal degree in co-relation 37000. Up to 6099 conditions per place. [2024-06-27 18:23:30,613 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 420 selfloop transitions, 54 changer transitions 0/482 dead transitions. [2024-06-27 18:23:30,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 482 transitions, 7101 flow [2024-06-27 18:23:30,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:30,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:30,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:23:30,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-06-27 18:23:30,614 INFO L175 Difference]: Start difference. First operand has 507 places, 450 transitions, 5657 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:23:30,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 482 transitions, 7101 flow [2024-06-27 18:23:33,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 508 places, 482 transitions, 7031 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 18:23:33,449 INFO L231 Difference]: Finished difference. Result has 509 places, 452 transitions, 5781 flow [2024-06-27 18:23:33,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5587, PETRI_DIFFERENCE_MINUEND_PLACES=498, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5781, PETRI_PLACES=509, PETRI_TRANSITIONS=452} [2024-06-27 18:23:33,450 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 467 predicate places. [2024-06-27 18:23:33,450 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 452 transitions, 5781 flow [2024-06-27 18:23:33,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:33,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:33,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:33,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 18:23:33,451 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:33,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:33,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1928823262, now seen corresponding path program 21 times [2024-06-27 18:23:33,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:33,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758531774] [2024-06-27 18:23:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:33,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:34,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:34,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:34,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758531774] [2024-06-27 18:23:34,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758531774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:34,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:34,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:23:34,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276821798] [2024-06-27 18:23:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:34,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:23:34,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:34,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:23:34,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:23:34,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:34,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 452 transitions, 5781 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:34,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:34,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:34,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:36,827 INFO L124 PetriNetUnfolderBase]: 3751/7536 cut-off events. [2024-06-27 18:23:36,827 INFO L125 PetriNetUnfolderBase]: For 376581/376581 co-relation queries the response was YES. [2024-06-27 18:23:36,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37621 conditions, 7536 events. 3751/7536 cut-off events. For 376581/376581 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 62176 event pairs, 1114 based on Foata normal form. 2/7024 useless extension candidates. Maximal degree in co-relation 37396. Up to 6081 conditions per place. [2024-06-27 18:23:36,936 INFO L140 encePairwiseOnDemand]: 23/38 looper letters, 408 selfloop transitions, 66 changer transitions 0/482 dead transitions. [2024-06-27 18:23:36,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 482 transitions, 6895 flow [2024-06-27 18:23:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:23:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:23:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 201 transitions. [2024-06-27 18:23:36,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068825910931174 [2024-06-27 18:23:36,938 INFO L175 Difference]: Start difference. First operand has 509 places, 452 transitions, 5781 flow. Second operand 13 states and 201 transitions. [2024-06-27 18:23:36,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 482 transitions, 6895 flow [2024-06-27 18:23:39,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 482 transitions, 6785 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 18:23:39,649 INFO L231 Difference]: Finished difference. Result has 515 places, 456 transitions, 5912 flow [2024-06-27 18:23:39,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5671, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5912, PETRI_PLACES=515, PETRI_TRANSITIONS=456} [2024-06-27 18:23:39,650 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 473 predicate places. [2024-06-27 18:23:39,650 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 456 transitions, 5912 flow [2024-06-27 18:23:39,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:39,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:39,650 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 18:23:39,650 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:39,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1959031288, now seen corresponding path program 21 times [2024-06-27 18:23:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:39,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346720449] [2024-06-27 18:23:39,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:39,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:40,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:40,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:40,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346720449] [2024-06-27 18:23:40,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346720449] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:40,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:40,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:23:40,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768368470] [2024-06-27 18:23:40,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:40,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:23:40,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:40,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:23:40,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:23:41,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:41,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 456 transitions, 5912 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:41,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:41,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:41,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:43,005 INFO L124 PetriNetUnfolderBase]: 3779/7592 cut-off events. [2024-06-27 18:23:43,005 INFO L125 PetriNetUnfolderBase]: For 380187/380187 co-relation queries the response was YES. [2024-06-27 18:23:43,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38070 conditions, 7592 events. 3779/7592 cut-off events. For 380187/380187 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 62721 event pairs, 1154 based on Foata normal form. 2/7078 useless extension candidates. Maximal degree in co-relation 37843. Up to 6447 conditions per place. [2024-06-27 18:23:43,117 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 452 selfloop transitions, 25 changer transitions 0/485 dead transitions. [2024-06-27 18:23:43,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 485 transitions, 7018 flow [2024-06-27 18:23:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:43,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:23:43,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 18:23:43,118 INFO L175 Difference]: Start difference. First operand has 515 places, 456 transitions, 5912 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:23:43,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 485 transitions, 7018 flow [2024-06-27 18:23:45,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 485 transitions, 6852 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 18:23:45,832 INFO L231 Difference]: Finished difference. Result has 517 places, 459 transitions, 5882 flow [2024-06-27 18:23:45,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5748, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5882, PETRI_PLACES=517, PETRI_TRANSITIONS=459} [2024-06-27 18:23:45,833 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 475 predicate places. [2024-06-27 18:23:45,833 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 459 transitions, 5882 flow [2024-06-27 18:23:45,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:45,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:45,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:45,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 18:23:45,833 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:45,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:45,834 INFO L85 PathProgramCache]: Analyzing trace with hash 666234324, now seen corresponding path program 22 times [2024-06-27 18:23:45,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:45,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992008481] [2024-06-27 18:23:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:45,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:46,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:46,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992008481] [2024-06-27 18:23:46,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992008481] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:46,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:46,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:23:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024604658] [2024-06-27 18:23:46,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:46,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:23:46,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:46,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:23:46,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:23:47,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:47,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 459 transitions, 5882 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:47,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:47,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:47,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:49,154 INFO L124 PetriNetUnfolderBase]: 3796/7625 cut-off events. [2024-06-27 18:23:49,154 INFO L125 PetriNetUnfolderBase]: For 384898/384898 co-relation queries the response was YES. [2024-06-27 18:23:49,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38129 conditions, 7625 events. 3796/7625 cut-off events. For 384898/384898 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 63125 event pairs, 1125 based on Foata normal form. 2/7109 useless extension candidates. Maximal degree in co-relation 37901. Up to 6287 conditions per place. [2024-06-27 18:23:49,272 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 426 selfloop transitions, 53 changer transitions 0/487 dead transitions. [2024-06-27 18:23:49,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 487 transitions, 6952 flow [2024-06-27 18:23:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:49,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 178 transitions. [2024-06-27 18:23:49,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258373205741627 [2024-06-27 18:23:49,273 INFO L175 Difference]: Start difference. First operand has 517 places, 459 transitions, 5882 flow. Second operand 11 states and 178 transitions. [2024-06-27 18:23:49,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 487 transitions, 6952 flow [2024-06-27 18:23:52,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 487 transitions, 6863 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 18:23:52,179 INFO L231 Difference]: Finished difference. Result has 520 places, 460 transitions, 5941 flow [2024-06-27 18:23:52,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5793, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5941, PETRI_PLACES=520, PETRI_TRANSITIONS=460} [2024-06-27 18:23:52,179 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 478 predicate places. [2024-06-27 18:23:52,180 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 460 transitions, 5941 flow [2024-06-27 18:23:52,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:52,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:52,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:52,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 18:23:52,180 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:52,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:52,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1375608816, now seen corresponding path program 23 times [2024-06-27 18:23:52,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:52,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532163104] [2024-06-27 18:23:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:52,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532163104] [2024-06-27 18:23:53,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532163104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:53,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:53,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:23:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132852441] [2024-06-27 18:23:53,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:53,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:23:53,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:23:53,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:23:53,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:53,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 460 transitions, 5941 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:53,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:53,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:53,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:23:55,290 INFO L124 PetriNetUnfolderBase]: 3813/7672 cut-off events. [2024-06-27 18:23:55,290 INFO L125 PetriNetUnfolderBase]: For 390912/390912 co-relation queries the response was YES. [2024-06-27 18:23:55,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38412 conditions, 7672 events. 3813/7672 cut-off events. For 390912/390912 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 63643 event pairs, 1163 based on Foata normal form. 2/7152 useless extension candidates. Maximal degree in co-relation 38183. Up to 6528 conditions per place. [2024-06-27 18:23:55,407 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 453 selfloop transitions, 25 changer transitions 0/486 dead transitions. [2024-06-27 18:23:55,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 486 transitions, 7009 flow [2024-06-27 18:23:55,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:23:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:23:55,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 167 transitions. [2024-06-27 18:23:55,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39952153110047844 [2024-06-27 18:23:55,409 INFO L175 Difference]: Start difference. First operand has 520 places, 460 transitions, 5941 flow. Second operand 11 states and 167 transitions. [2024-06-27 18:23:55,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 486 transitions, 7009 flow [2024-06-27 18:23:58,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 486 transitions, 6869 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 18:23:58,433 INFO L231 Difference]: Finished difference. Result has 522 places, 461 transitions, 5902 flow [2024-06-27 18:23:58,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5801, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5902, PETRI_PLACES=522, PETRI_TRANSITIONS=461} [2024-06-27 18:23:58,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 480 predicate places. [2024-06-27 18:23:58,434 INFO L495 AbstractCegarLoop]: Abstraction has has 522 places, 461 transitions, 5902 flow [2024-06-27 18:23:58,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:58,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:23:58,434 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:23:58,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 18:23:58,435 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:23:58,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:23:58,435 INFO L85 PathProgramCache]: Analyzing trace with hash -786997448, now seen corresponding path program 24 times [2024-06-27 18:23:58,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:23:58,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208950666] [2024-06-27 18:23:58,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:23:58,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:23:58,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:23:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:23:59,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:23:59,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208950666] [2024-06-27 18:23:59,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208950666] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:23:59,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:23:59,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:23:59,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698169087] [2024-06-27 18:23:59,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:23:59,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:23:59,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:23:59,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:23:59,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:23:59,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:23:59,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 461 transitions, 5902 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:23:59,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:23:59,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:23:59,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:01,405 INFO L124 PetriNetUnfolderBase]: 3830/7709 cut-off events. [2024-06-27 18:24:01,406 INFO L125 PetriNetUnfolderBase]: For 396197/396197 co-relation queries the response was YES. [2024-06-27 18:24:01,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38501 conditions, 7709 events. 3830/7709 cut-off events. For 396197/396197 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 64113 event pairs, 1154 based on Foata normal form. 2/7188 useless extension candidates. Maximal degree in co-relation 38271. Up to 6338 conditions per place. [2024-06-27 18:24:01,518 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 434 selfloop transitions, 49 changer transitions 0/491 dead transitions. [2024-06-27 18:24:01,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 491 transitions, 7000 flow [2024-06-27 18:24:01,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:24:01,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:24:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:24:01,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430622009569378 [2024-06-27 18:24:01,519 INFO L175 Difference]: Start difference. First operand has 522 places, 461 transitions, 5902 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:24:01,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 491 transitions, 7000 flow [2024-06-27 18:24:04,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 491 transitions, 6911 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 18:24:04,655 INFO L231 Difference]: Finished difference. Result has 524 places, 462 transitions, 5963 flow [2024-06-27 18:24:04,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5813, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5963, PETRI_PLACES=524, PETRI_TRANSITIONS=462} [2024-06-27 18:24:04,655 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 482 predicate places. [2024-06-27 18:24:04,655 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 462 transitions, 5963 flow [2024-06-27 18:24:04,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:04,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:04,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:04,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 18:24:04,656 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:04,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2077379268, now seen corresponding path program 25 times [2024-06-27 18:24:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:04,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879907453] [2024-06-27 18:24:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:04,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:05,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879907453] [2024-06-27 18:24:05,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879907453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:05,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:05,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:24:05,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676967356] [2024-06-27 18:24:05,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:05,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:24:05,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:05,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:24:05,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:24:05,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:24:05,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 462 transitions, 5963 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:05,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:05,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:24:05,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:07,814 INFO L124 PetriNetUnfolderBase]: 3847/7742 cut-off events. [2024-06-27 18:24:07,814 INFO L125 PetriNetUnfolderBase]: For 401486/401486 co-relation queries the response was YES. [2024-06-27 18:24:07,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38785 conditions, 7742 events. 3847/7742 cut-off events. For 401486/401486 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 64440 event pairs, 1176 based on Foata normal form. 2/7221 useless extension candidates. Maximal degree in co-relation 38554. Up to 6519 conditions per place. [2024-06-27 18:24:07,930 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 457 selfloop transitions, 26 changer transitions 0/491 dead transitions. [2024-06-27 18:24:07,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 491 transitions, 7059 flow [2024-06-27 18:24:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:24:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:24:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 174 transitions. [2024-06-27 18:24:07,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41626794258373206 [2024-06-27 18:24:07,931 INFO L175 Difference]: Start difference. First operand has 524 places, 462 transitions, 5963 flow. Second operand 11 states and 174 transitions. [2024-06-27 18:24:07,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 491 transitions, 7059 flow [2024-06-27 18:24:11,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 491 transitions, 6919 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 18:24:11,279 INFO L231 Difference]: Finished difference. Result has 526 places, 463 transitions, 5929 flow [2024-06-27 18:24:11,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5823, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5929, PETRI_PLACES=526, PETRI_TRANSITIONS=463} [2024-06-27 18:24:11,279 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 484 predicate places. [2024-06-27 18:24:11,279 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 463 transitions, 5929 flow [2024-06-27 18:24:11,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:11,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:11,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:11,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 18:24:11,280 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:11,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -786680318, now seen corresponding path program 26 times [2024-06-27 18:24:11,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592672463] [2024-06-27 18:24:11,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:11,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:12,240 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 18:24:12,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:12,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592672463] [2024-06-27 18:24:12,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592672463] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:12,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:12,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:24:12,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541633223] [2024-06-27 18:24:12,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:12,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:24:12,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:12,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:24:12,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:24:12,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:24:12,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 463 transitions, 5929 flow. Second operand has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:12,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:12,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:24:12,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:14,364 INFO L124 PetriNetUnfolderBase]: 3884/7810 cut-off events. [2024-06-27 18:24:14,364 INFO L125 PetriNetUnfolderBase]: For 438528/438528 co-relation queries the response was YES. [2024-06-27 18:24:14,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39670 conditions, 7810 events. 3884/7810 cut-off events. For 438528/438528 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 65080 event pairs, 1175 based on Foata normal form. 2/7287 useless extension candidates. Maximal degree in co-relation 39438. Up to 6176 conditions per place. [2024-06-27 18:24:14,482 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 435 selfloop transitions, 55 changer transitions 0/498 dead transitions. [2024-06-27 18:24:14,483 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 498 transitions, 7453 flow [2024-06-27 18:24:14,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:24:14,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:24:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:24:14,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43779904306220097 [2024-06-27 18:24:14,484 INFO L175 Difference]: Start difference. First operand has 526 places, 463 transitions, 5929 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:24:14,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 498 transitions, 7453 flow [2024-06-27 18:24:18,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 498 transitions, 7357 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 18:24:18,077 INFO L231 Difference]: Finished difference. Result has 528 places, 465 transitions, 6049 flow [2024-06-27 18:24:18,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6049, PETRI_PLACES=528, PETRI_TRANSITIONS=465} [2024-06-27 18:24:18,078 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 486 predicate places. [2024-06-27 18:24:18,078 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 465 transitions, 6049 flow [2024-06-27 18:24:18,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.333333333333334) internal successors, (124), 12 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:18,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:18,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:18,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 18:24:18,078 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:18,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:18,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1375609095, now seen corresponding path program 1 times [2024-06-27 18:24:18,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:18,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876694160] [2024-06-27 18:24:18,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:18,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:18,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:18,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:18,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876694160] [2024-06-27 18:24:18,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876694160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:18,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:18,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:24:18,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667946349] [2024-06-27 18:24:18,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:18,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:24:18,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:18,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:24:18,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:24:19,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:24:19,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 465 transitions, 6049 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:19,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:19,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:24:19,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:21,168 INFO L124 PetriNetUnfolderBase]: 3882/7823 cut-off events. [2024-06-27 18:24:21,168 INFO L125 PetriNetUnfolderBase]: For 412090/412090 co-relation queries the response was YES. [2024-06-27 18:24:21,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39416 conditions, 7823 events. 3882/7823 cut-off events. For 412090/412090 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 65337 event pairs, 1201 based on Foata normal form. 1/7294 useless extension candidates. Maximal degree in co-relation 39183. Up to 6661 conditions per place. [2024-06-27 18:24:21,282 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 451 selfloop transitions, 28 changer transitions 0/487 dead transitions. [2024-06-27 18:24:21,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 487 transitions, 7061 flow [2024-06-27 18:24:21,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:24:21,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:24:21,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 165 transitions. [2024-06-27 18:24:21,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39473684210526316 [2024-06-27 18:24:21,284 INFO L175 Difference]: Start difference. First operand has 528 places, 465 transitions, 6049 flow. Second operand 11 states and 165 transitions. [2024-06-27 18:24:21,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 487 transitions, 7061 flow [2024-06-27 18:24:24,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 487 transitions, 6929 flow, removed 36 selfloop flow, removed 7 redundant places. [2024-06-27 18:24:24,602 INFO L231 Difference]: Finished difference. Result has 532 places, 465 transitions, 5981 flow [2024-06-27 18:24:24,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5917, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5981, PETRI_PLACES=532, PETRI_TRANSITIONS=465} [2024-06-27 18:24:24,602 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 490 predicate places. [2024-06-27 18:24:24,602 INFO L495 AbstractCegarLoop]: Abstraction has has 532 places, 465 transitions, 5981 flow [2024-06-27 18:24:24,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:24,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:24,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:24,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 18:24:24,603 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:24,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:24,603 INFO L85 PathProgramCache]: Analyzing trace with hash 666018998, now seen corresponding path program 22 times [2024-06-27 18:24:24,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:24,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815398236] [2024-06-27 18:24:24,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:24,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:24,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:25,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:25,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:25,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815398236] [2024-06-27 18:24:25,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815398236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:25,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:25,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:24:25,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738535380] [2024-06-27 18:24:25,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:25,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:24:25,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:25,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:24:25,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:24:25,740 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:24:25,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 532 places, 465 transitions, 5981 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:25,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:25,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:24:25,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:27,787 INFO L124 PetriNetUnfolderBase]: 3912/7875 cut-off events. [2024-06-27 18:24:27,787 INFO L125 PetriNetUnfolderBase]: For 461578/461578 co-relation queries the response was YES. [2024-06-27 18:24:27,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40126 conditions, 7875 events. 3912/7875 cut-off events. For 461578/461578 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 65731 event pairs, 1170 based on Foata normal form. 2/7339 useless extension candidates. Maximal degree in co-relation 39891. Up to 6292 conditions per place. [2024-06-27 18:24:27,910 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 413 selfloop transitions, 76 changer transitions 0/497 dead transitions. [2024-06-27 18:24:27,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 497 transitions, 7557 flow [2024-06-27 18:24:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:24:27,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:24:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 196 transitions. [2024-06-27 18:24:27,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298245614035088 [2024-06-27 18:24:27,911 INFO L175 Difference]: Start difference. First operand has 532 places, 465 transitions, 5981 flow. Second operand 12 states and 196 transitions. [2024-06-27 18:24:27,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 497 transitions, 7557 flow [2024-06-27 18:24:31,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 497 transitions, 7401 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-27 18:24:31,681 INFO L231 Difference]: Finished difference. Result has 535 places, 469 transitions, 6179 flow [2024-06-27 18:24:31,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5825, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6179, PETRI_PLACES=535, PETRI_TRANSITIONS=469} [2024-06-27 18:24:31,681 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 493 predicate places. [2024-06-27 18:24:31,681 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 469 transitions, 6179 flow [2024-06-27 18:24:31,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:31,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:31,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:31,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 18:24:31,682 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:31,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2077062138, now seen corresponding path program 27 times [2024-06-27 18:24:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426998115] [2024-06-27 18:24:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426998115] [2024-06-27 18:24:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426998115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:32,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:32,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:24:32,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560274253] [2024-06-27 18:24:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:32,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:24:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:32,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:24:32,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:24:32,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:24:32,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 469 transitions, 6179 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:32,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:32,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:24:32,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:34,952 INFO L124 PetriNetUnfolderBase]: 3949/7942 cut-off events. [2024-06-27 18:24:34,952 INFO L125 PetriNetUnfolderBase]: For 504534/504534 co-relation queries the response was YES. [2024-06-27 18:24:35,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41611 conditions, 7942 events. 3949/7942 cut-off events. For 504534/504534 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 66349 event pairs, 1212 based on Foata normal form. 2/7407 useless extension candidates. Maximal degree in co-relation 41374. Up to 6531 conditions per place. [2024-06-27 18:24:35,069 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 466 selfloop transitions, 29 changer transitions 0/503 dead transitions. [2024-06-27 18:24:35,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 503 transitions, 7719 flow [2024-06-27 18:24:35,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:24:35,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:24:35,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 177 transitions. [2024-06-27 18:24:35,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423444976076555 [2024-06-27 18:24:35,070 INFO L175 Difference]: Start difference. First operand has 535 places, 469 transitions, 6179 flow. Second operand 11 states and 177 transitions. [2024-06-27 18:24:35,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 503 transitions, 7719 flow [2024-06-27 18:24:38,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 503 transitions, 7363 flow, removed 53 selfloop flow, removed 10 redundant places. [2024-06-27 18:24:38,967 INFO L231 Difference]: Finished difference. Result has 536 places, 471 transitions, 5991 flow [2024-06-27 18:24:38,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5823, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5991, PETRI_PLACES=536, PETRI_TRANSITIONS=471} [2024-06-27 18:24:38,968 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 494 predicate places. [2024-06-27 18:24:38,968 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 471 transitions, 5991 flow [2024-06-27 18:24:38,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:38,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:38,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:38,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 18:24:38,968 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:38,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:38,968 INFO L85 PathProgramCache]: Analyzing trace with hash 2015129677, now seen corresponding path program 19 times [2024-06-27 18:24:38,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:38,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615215070] [2024-06-27 18:24:38,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:38,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:39,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:39,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615215070] [2024-06-27 18:24:39,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615215070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:39,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:39,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:24:39,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041429177] [2024-06-27 18:24:39,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:39,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:24:39,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:24:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:24:40,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:24:40,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 471 transitions, 5991 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:40,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:40,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:24:40,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:42,252 INFO L124 PetriNetUnfolderBase]: 4050/8216 cut-off events. [2024-06-27 18:24:42,252 INFO L125 PetriNetUnfolderBase]: For 693432/693432 co-relation queries the response was YES. [2024-06-27 18:24:42,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41426 conditions, 8216 events. 4050/8216 cut-off events. For 693432/693432 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 69483 event pairs, 1247 based on Foata normal form. 16/7676 useless extension candidates. Maximal degree in co-relation 41189. Up to 6423 conditions per place. [2024-06-27 18:24:42,385 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 438 selfloop transitions, 61 changer transitions 0/507 dead transitions. [2024-06-27 18:24:42,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 507 transitions, 7161 flow [2024-06-27 18:24:42,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:24:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:24:42,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 201 transitions. [2024-06-27 18:24:42,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4407894736842105 [2024-06-27 18:24:42,386 INFO L175 Difference]: Start difference. First operand has 536 places, 471 transitions, 5991 flow. Second operand 12 states and 201 transitions. [2024-06-27 18:24:42,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 507 transitions, 7161 flow [2024-06-27 18:24:46,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 507 transitions, 7026 flow, removed 52 selfloop flow, removed 7 redundant places. [2024-06-27 18:24:46,106 INFO L231 Difference]: Finished difference. Result has 542 places, 472 transitions, 6047 flow [2024-06-27 18:24:46,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5856, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6047, PETRI_PLACES=542, PETRI_TRANSITIONS=472} [2024-06-27 18:24:46,106 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 500 predicate places. [2024-06-27 18:24:46,106 INFO L495 AbstractCegarLoop]: Abstraction has has 542 places, 472 transitions, 6047 flow [2024-06-27 18:24:46,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:46,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:46,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:46,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 18:24:46,107 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:46,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:46,107 INFO L85 PathProgramCache]: Analyzing trace with hash 472294914, now seen corresponding path program 28 times [2024-06-27 18:24:46,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:46,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708586472] [2024-06-27 18:24:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:46,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:47,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708586472] [2024-06-27 18:24:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708586472] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:47,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:47,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:24:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148414589] [2024-06-27 18:24:47,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:47,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:24:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:24:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:24:47,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:24:47,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 472 transitions, 6047 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:47,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:47,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:24:47,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:49,564 INFO L124 PetriNetUnfolderBase]: 4047/8195 cut-off events. [2024-06-27 18:24:49,564 INFO L125 PetriNetUnfolderBase]: For 452043/452043 co-relation queries the response was YES. [2024-06-27 18:24:49,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40769 conditions, 8195 events. 4047/8195 cut-off events. For 452043/452043 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 69375 event pairs, 1260 based on Foata normal form. 2/7641 useless extension candidates. Maximal degree in co-relation 40529. Up to 6747 conditions per place. [2024-06-27 18:24:49,701 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 430 selfloop transitions, 60 changer transitions 0/498 dead transitions. [2024-06-27 18:24:49,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 552 places, 498 transitions, 7099 flow [2024-06-27 18:24:49,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:24:49,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:24:49,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:24:49,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-27 18:24:49,702 INFO L175 Difference]: Start difference. First operand has 542 places, 472 transitions, 6047 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:24:49,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 552 places, 498 transitions, 7099 flow [2024-06-27 18:24:53,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 498 transitions, 6913 flow, removed 36 selfloop flow, removed 10 redundant places. [2024-06-27 18:24:53,492 INFO L231 Difference]: Finished difference. Result has 543 places, 472 transitions, 5985 flow [2024-06-27 18:24:53,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5861, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5985, PETRI_PLACES=543, PETRI_TRANSITIONS=472} [2024-06-27 18:24:53,492 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 501 predicate places. [2024-06-27 18:24:53,492 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 472 transitions, 5985 flow [2024-06-27 18:24:53,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:53,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:24:53,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:24:53,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 18:24:53,493 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:24:53,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:24:53,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1722019937, now seen corresponding path program 20 times [2024-06-27 18:24:53,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:24:53,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828211766] [2024-06-27 18:24:53,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:24:53,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:24:53,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:24:54,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:24:54,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:24:54,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828211766] [2024-06-27 18:24:54,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828211766] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:24:54,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:24:54,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:24:54,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953663511] [2024-06-27 18:24:54,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:24:54,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:24:54,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:24:54,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:24:54,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:24:54,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:24:54,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 472 transitions, 5985 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:24:54,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:24:54,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:24:54,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:24:57,568 INFO L124 PetriNetUnfolderBase]: 4152/8458 cut-off events. [2024-06-27 18:24:57,568 INFO L125 PetriNetUnfolderBase]: For 644348/644348 co-relation queries the response was YES. [2024-06-27 18:24:57,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41428 conditions, 8458 events. 4152/8458 cut-off events. For 644348/644348 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 72275 event pairs, 1293 based on Foata normal form. 14/7901 useless extension candidates. Maximal degree in co-relation 41187. Up to 6568 conditions per place. [2024-06-27 18:24:57,699 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 415 selfloop transitions, 89 changer transitions 0/512 dead transitions. [2024-06-27 18:24:57,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 512 transitions, 7533 flow [2024-06-27 18:24:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 18:24:57,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 18:24:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 215 transitions. [2024-06-27 18:24:57,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352226720647773 [2024-06-27 18:24:57,700 INFO L175 Difference]: Start difference. First operand has 543 places, 472 transitions, 5985 flow. Second operand 13 states and 215 transitions. [2024-06-27 18:24:57,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 512 transitions, 7533 flow [2024-06-27 18:25:02,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 512 transitions, 7389 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 18:25:02,018 INFO L231 Difference]: Finished difference. Result has 545 places, 473 transitions, 6075 flow [2024-06-27 18:25:02,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5841, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6075, PETRI_PLACES=545, PETRI_TRANSITIONS=473} [2024-06-27 18:25:02,018 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 503 predicate places. [2024-06-27 18:25:02,018 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 473 transitions, 6075 flow [2024-06-27 18:25:02,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:02,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:02,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:02,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 18:25:02,019 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:02,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:02,020 INFO L85 PathProgramCache]: Analyzing trace with hash -117102820, now seen corresponding path program 23 times [2024-06-27 18:25:02,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:02,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723382837] [2024-06-27 18:25:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:02,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:03,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:03,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:03,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723382837] [2024-06-27 18:25:03,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723382837] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:03,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:03,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:25:03,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399096476] [2024-06-27 18:25:03,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:03,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:25:03,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:03,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:25:03,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:25:03,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:25:03,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 473 transitions, 6075 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:03,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:03,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:25:03,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:06,024 INFO L124 PetriNetUnfolderBase]: 4176/8479 cut-off events. [2024-06-27 18:25:06,025 INFO L125 PetriNetUnfolderBase]: For 461967/461967 co-relation queries the response was YES. [2024-06-27 18:25:06,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41986 conditions, 8479 events. 4176/8479 cut-off events. For 461967/461967 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 72392 event pairs, 1312 based on Foata normal form. 2/7905 useless extension candidates. Maximal degree in co-relation 41744. Up to 6893 conditions per place. [2024-06-27 18:25:06,131 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 432 selfloop transitions, 64 changer transitions 0/504 dead transitions. [2024-06-27 18:25:06,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 556 places, 504 transitions, 7249 flow [2024-06-27 18:25:06,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:25:06,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:25:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 191 transitions. [2024-06-27 18:25:06,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41885964912280704 [2024-06-27 18:25:06,132 INFO L175 Difference]: Start difference. First operand has 545 places, 473 transitions, 6075 flow. Second operand 12 states and 191 transitions. [2024-06-27 18:25:06,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 556 places, 504 transitions, 7249 flow [2024-06-27 18:25:09,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 504 transitions, 7023 flow, removed 22 selfloop flow, removed 11 redundant places. [2024-06-27 18:25:09,848 INFO L231 Difference]: Finished difference. Result has 546 places, 477 transitions, 6098 flow [2024-06-27 18:25:09,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5857, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6098, PETRI_PLACES=546, PETRI_TRANSITIONS=477} [2024-06-27 18:25:09,849 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 504 predicate places. [2024-06-27 18:25:09,849 INFO L495 AbstractCegarLoop]: Abstraction has has 546 places, 477 transitions, 6098 flow [2024-06-27 18:25:09,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:09,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:09,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:09,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 18:25:09,849 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:09,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:09,849 INFO L85 PathProgramCache]: Analyzing trace with hash -117108555, now seen corresponding path program 21 times [2024-06-27 18:25:09,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:09,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757199328] [2024-06-27 18:25:09,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:09,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:10,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757199328] [2024-06-27 18:25:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757199328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:10,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:10,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:25:10,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946933249] [2024-06-27 18:25:10,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:10,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:25:10,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:10,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:25:10,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:25:11,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:25:11,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 477 transitions, 6098 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:11,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:11,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:25:11,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:13,902 INFO L124 PetriNetUnfolderBase]: 4193/8518 cut-off events. [2024-06-27 18:25:13,902 INFO L125 PetriNetUnfolderBase]: For 466149/466149 co-relation queries the response was YES. [2024-06-27 18:25:13,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42011 conditions, 8518 events. 4193/8518 cut-off events. For 466149/466149 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 72840 event pairs, 1373 based on Foata normal form. 2/7943 useless extension candidates. Maximal degree in co-relation 41768. Up to 7197 conditions per place. [2024-06-27 18:25:14,011 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 453 selfloop transitions, 41 changer transitions 0/502 dead transitions. [2024-06-27 18:25:14,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 502 transitions, 7196 flow [2024-06-27 18:25:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:25:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:25:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 182 transitions. [2024-06-27 18:25:14,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991228070175439 [2024-06-27 18:25:14,013 INFO L175 Difference]: Start difference. First operand has 546 places, 477 transitions, 6098 flow. Second operand 12 states and 182 transitions. [2024-06-27 18:25:14,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 502 transitions, 7196 flow [2024-06-27 18:25:17,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 502 transitions, 7019 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 18:25:18,001 INFO L231 Difference]: Finished difference. Result has 549 places, 478 transitions, 6059 flow [2024-06-27 18:25:18,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5921, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6059, PETRI_PLACES=549, PETRI_TRANSITIONS=478} [2024-06-27 18:25:18,002 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 507 predicate places. [2024-06-27 18:25:18,002 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 478 transitions, 6059 flow [2024-06-27 18:25:18,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:18,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:18,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:18,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 18:25:18,003 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:18,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:18,003 INFO L85 PathProgramCache]: Analyzing trace with hash -117108400, now seen corresponding path program 24 times [2024-06-27 18:25:18,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:18,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308748417] [2024-06-27 18:25:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:18,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:18,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:19,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:19,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:19,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308748417] [2024-06-27 18:25:19,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308748417] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:19,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:19,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:25:19,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366776868] [2024-06-27 18:25:19,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:19,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:25:19,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:25:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:25:19,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:25:19,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 478 transitions, 6059 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:19,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:19,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:25:19,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:22,089 INFO L124 PetriNetUnfolderBase]: 4223/8563 cut-off events. [2024-06-27 18:25:22,089 INFO L125 PetriNetUnfolderBase]: For 508879/508879 co-relation queries the response was YES. [2024-06-27 18:25:22,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42841 conditions, 8563 events. 4223/8563 cut-off events. For 508879/508879 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 73150 event pairs, 1309 based on Foata normal form. 2/7980 useless extension candidates. Maximal degree in co-relation 42597. Up to 6858 conditions per place. [2024-06-27 18:25:22,203 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 417 selfloop transitions, 85 changer transitions 0/510 dead transitions. [2024-06-27 18:25:22,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 510 transitions, 7685 flow [2024-06-27 18:25:22,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:25:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:25:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 195 transitions. [2024-06-27 18:25:22,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4276315789473684 [2024-06-27 18:25:22,204 INFO L175 Difference]: Start difference. First operand has 549 places, 478 transitions, 6059 flow. Second operand 12 states and 195 transitions. [2024-06-27 18:25:22,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 510 transitions, 7685 flow [2024-06-27 18:25:26,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 510 transitions, 7559 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 18:25:26,188 INFO L231 Difference]: Finished difference. Result has 552 places, 482 transitions, 6313 flow [2024-06-27 18:25:26,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=5933, PETRI_DIFFERENCE_MINUEND_PLACES=539, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=478, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6313, PETRI_PLACES=552, PETRI_TRANSITIONS=482} [2024-06-27 18:25:26,189 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 510 predicate places. [2024-06-27 18:25:26,189 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 482 transitions, 6313 flow [2024-06-27 18:25:26,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:26,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:26,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:26,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 18:25:26,190 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:26,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:26,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1385399442, now seen corresponding path program 25 times [2024-06-27 18:25:26,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:26,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898865171] [2024-06-27 18:25:26,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:26,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:27,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:27,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:27,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898865171] [2024-06-27 18:25:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898865171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:27,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:27,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:25:27,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193806272] [2024-06-27 18:25:27,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:27,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:25:27,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:27,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:25:27,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:25:27,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:25:27,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 482 transitions, 6313 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:27,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:27,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:25:27,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:30,697 INFO L124 PetriNetUnfolderBase]: 4247/8599 cut-off events. [2024-06-27 18:25:30,698 INFO L125 PetriNetUnfolderBase]: For 513141/513141 co-relation queries the response was YES. [2024-06-27 18:25:30,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43306 conditions, 8599 events. 4247/8599 cut-off events. For 513141/513141 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 73401 event pairs, 1343 based on Foata normal form. 2/8012 useless extension candidates. Maximal degree in co-relation 43060. Up to 6943 conditions per place. [2024-06-27 18:25:30,816 INFO L140 encePairwiseOnDemand]: 24/38 looper letters, 434 selfloop transitions, 70 changer transitions 0/512 dead transitions. [2024-06-27 18:25:30,816 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 512 transitions, 7503 flow [2024-06-27 18:25:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:25:30,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:25:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 192 transitions. [2024-06-27 18:25:30,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2024-06-27 18:25:30,817 INFO L175 Difference]: Start difference. First operand has 552 places, 482 transitions, 6313 flow. Second operand 12 states and 192 transitions. [2024-06-27 18:25:30,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 512 transitions, 7503 flow [2024-06-27 18:25:34,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 554 places, 512 transitions, 7235 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-27 18:25:34,743 INFO L231 Difference]: Finished difference. Result has 555 places, 486 transitions, 6310 flow [2024-06-27 18:25:34,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6049, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6310, PETRI_PLACES=555, PETRI_TRANSITIONS=486} [2024-06-27 18:25:34,744 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 513 predicate places. [2024-06-27 18:25:34,744 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 486 transitions, 6310 flow [2024-06-27 18:25:34,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:34,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:34,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:34,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 18:25:34,745 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:34,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash -986556404, now seen corresponding path program 29 times [2024-06-27 18:25:34,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:34,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031176462] [2024-06-27 18:25:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:34,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:35,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:35,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031176462] [2024-06-27 18:25:35,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031176462] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:35,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:35,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:25:35,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373478641] [2024-06-27 18:25:35,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:35,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:25:35,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:35,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:25:35,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:25:36,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:25:36,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 486 transitions, 6310 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:36,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:36,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:25:36,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:38,897 INFO L124 PetriNetUnfolderBase]: 4264/8636 cut-off events. [2024-06-27 18:25:38,897 INFO L125 PetriNetUnfolderBase]: For 516385/516385 co-relation queries the response was YES. [2024-06-27 18:25:38,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43334 conditions, 8636 events. 4264/8636 cut-off events. For 516385/516385 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 73807 event pairs, 1361 based on Foata normal form. 2/8050 useless extension candidates. Maximal degree in co-relation 43087. Up to 7243 conditions per place. [2024-06-27 18:25:39,019 INFO L140 encePairwiseOnDemand]: 27/38 looper letters, 482 selfloop transitions, 27 changer transitions 0/517 dead transitions. [2024-06-27 18:25:39,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 517 transitions, 7826 flow [2024-06-27 18:25:39,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:39,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:39,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:25:39,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41866028708133973 [2024-06-27 18:25:39,020 INFO L175 Difference]: Start difference. First operand has 555 places, 486 transitions, 6310 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:25:39,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 517 transitions, 7826 flow [2024-06-27 18:25:43,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 517 transitions, 7656 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-27 18:25:43,177 INFO L231 Difference]: Finished difference. Result has 558 places, 487 transitions, 6242 flow [2024-06-27 18:25:43,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6140, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6242, PETRI_PLACES=558, PETRI_TRANSITIONS=487} [2024-06-27 18:25:43,178 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 516 predicate places. [2024-06-27 18:25:43,178 INFO L495 AbstractCegarLoop]: Abstraction has has 558 places, 487 transitions, 6242 flow [2024-06-27 18:25:43,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:43,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:43,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:43,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 18:25:43,178 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:43,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1821397812, now seen corresponding path program 26 times [2024-06-27 18:25:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667763211] [2024-06-27 18:25:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:43,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:44,311 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 18:25:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667763211] [2024-06-27 18:25:44,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667763211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:44,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:44,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:25:44,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768383357] [2024-06-27 18:25:44,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:44,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:25:44,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:44,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:25:44,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:25:44,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:25:44,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 487 transitions, 6242 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:44,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:44,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:25:44,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:47,351 INFO L124 PetriNetUnfolderBase]: 4260/8633 cut-off events. [2024-06-27 18:25:47,351 INFO L125 PetriNetUnfolderBase]: For 487039/487039 co-relation queries the response was YES. [2024-06-27 18:25:47,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42633 conditions, 8633 events. 4260/8633 cut-off events. For 487039/487039 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 73802 event pairs, 1324 based on Foata normal form. 2/8043 useless extension candidates. Maximal degree in co-relation 42385. Up to 7022 conditions per place. [2024-06-27 18:25:47,476 INFO L140 encePairwiseOnDemand]: 25/38 looper letters, 438 selfloop transitions, 67 changer transitions 0/513 dead transitions. [2024-06-27 18:25:47,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 513 transitions, 7318 flow [2024-06-27 18:25:47,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:25:47,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:25:47,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 189 transitions. [2024-06-27 18:25:47,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144736842105263 [2024-06-27 18:25:47,478 INFO L175 Difference]: Start difference. First operand has 558 places, 487 transitions, 6242 flow. Second operand 12 states and 189 transitions. [2024-06-27 18:25:47,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 513 transitions, 7318 flow [2024-06-27 18:25:51,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 513 transitions, 7172 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-27 18:25:51,892 INFO L231 Difference]: Finished difference. Result has 561 places, 487 transitions, 6235 flow [2024-06-27 18:25:51,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=549, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6235, PETRI_PLACES=561, PETRI_TRANSITIONS=487} [2024-06-27 18:25:51,892 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 519 predicate places. [2024-06-27 18:25:51,892 INFO L495 AbstractCegarLoop]: Abstraction has has 561 places, 487 transitions, 6235 flow [2024-06-27 18:25:51,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:51,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:51,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:51,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 18:25:51,893 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:51,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash -993975014, now seen corresponding path program 30 times [2024-06-27 18:25:51,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:51,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638281839] [2024-06-27 18:25:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:51,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:25:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:25:53,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:25:53,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638281839] [2024-06-27 18:25:53,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638281839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:25:53,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:25:53,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:25:53,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741492705] [2024-06-27 18:25:53,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:25:53,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:25:53,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:25:53,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:25:53,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:25:53,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 38 [2024-06-27 18:25:53,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 561 places, 487 transitions, 6235 flow. Second operand has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:53,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:25:53,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 38 [2024-06-27 18:25:53,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:25:56,050 INFO L124 PetriNetUnfolderBase]: 4257/8628 cut-off events. [2024-06-27 18:25:56,050 INFO L125 PetriNetUnfolderBase]: For 452066/452066 co-relation queries the response was YES. [2024-06-27 18:25:56,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41943 conditions, 8628 events. 4257/8628 cut-off events. For 452066/452066 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 73724 event pairs, 1353 based on Foata normal form. 2/8039 useless extension candidates. Maximal degree in co-relation 41694. Up to 7267 conditions per place. [2024-06-27 18:25:56,160 INFO L140 encePairwiseOnDemand]: 26/38 looper letters, 472 selfloop transitions, 33 changer transitions 0/513 dead transitions. [2024-06-27 18:25:56,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 513 transitions, 7317 flow [2024-06-27 18:25:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:25:56,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:25:56,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 171 transitions. [2024-06-27 18:25:56,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 18:25:56,162 INFO L175 Difference]: Start difference. First operand has 561 places, 487 transitions, 6235 flow. Second operand 11 states and 171 transitions. [2024-06-27 18:25:56,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 513 transitions, 7317 flow [2024-06-27 18:25:59,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 513 transitions, 7139 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 18:25:59,844 INFO L231 Difference]: Finished difference. Result has 562 places, 487 transitions, 6127 flow [2024-06-27 18:25:59,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=6057, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6127, PETRI_PLACES=562, PETRI_TRANSITIONS=487} [2024-06-27 18:25:59,845 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 520 predicate places. [2024-06-27 18:25:59,845 INFO L495 AbstractCegarLoop]: Abstraction has has 562 places, 487 transitions, 6127 flow [2024-06-27 18:25:59,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.23076923076923) internal successors, (133), 13 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:25:59,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:25:59,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:25:59,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 18:25:59,846 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:25:59,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:25:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -404823304, now seen corresponding path program 31 times [2024-06-27 18:25:59,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:25:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603039197] [2024-06-27 18:25:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:25:59,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:25:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat