./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2024-06-19_11-23-25.files/protection/rfi007_tso.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/rfi007_tso.i ./goblint.2024-06-19_11-23-25.files/protection/rfi007_tso.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 18:42:37,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 18:42:37,109 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 18:42:37,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 18:42:37,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 18:42:37,151 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 18:42:37,152 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 18:42:37,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 18:42:37,154 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 18:42:37,157 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 18:42:37,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 18:42:37,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 18:42:37,159 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 18:42:37,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 18:42:37,165 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 18:42:37,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 18:42:37,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 18:42:37,166 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 18:42:37,166 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 18:42:37,166 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 18:42:37,167 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 18:42:37,167 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 18:42:37,167 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 18:42:37,168 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 18:42:37,168 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 18:42:37,168 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 18:42:37,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 18:42:37,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 18:42:37,170 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 18:42:37,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 18:42:37,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 18:42:37,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 18:42:37,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:42:37,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 18:42:37,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 18:42:37,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 18:42:37,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 18:42:37,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 18:42:37,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 18:42:37,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 18:42:37,173 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 18:42:37,174 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 18:42:37,174 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 18:42:37,174 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-06-27 18:42:37,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 18:42:37,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 18:42:37,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 18:42:37,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 18:42:37,499 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 18:42:37,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-27 18:42:38,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 18:42:38,916 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 18:42:38,917 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi007_tso.i [2024-06-27 18:42:38,930 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06457682/5f5f4c33089e40ad8efa8d817657086a/FLAG521ccc070 [2024-06-27 18:42:38,942 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06457682/5f5f4c33089e40ad8efa8d817657086a [2024-06-27 18:42:38,945 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 18:42:38,945 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 18:42:38,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi007_tso.yml/witness.yml [2024-06-27 18:42:39,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 18:42:39,061 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 18:42:39,063 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 18:42:39,064 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 18:42:39,069 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 18:42:39,069 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:42:38" (1/2) ... [2024-06-27 18:42:39,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1582c111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:42:39, skipping insertion in model container [2024-06-27 18:42:39,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 06:42:38" (1/2) ... [2024-06-27 18:42:39,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@788ca700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 06:42:39, skipping insertion in model container [2024-06-27 18:42:39,073 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:42:39" (2/2) ... [2024-06-27 18:42:39,073 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1582c111 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:42:39, skipping insertion in model container [2024-06-27 18:42:39,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:42:39" (2/2) ... [2024-06-27 18:42:39,074 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 18:42:39,144 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 18:42:39,145 INFO L97 edCorrectnessWitness]: Location invariant before [L813-L813] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-27 18:42:39,146 INFO L97 edCorrectnessWitness]: Location invariant before [L814-L814] ((((((((((((((! multithreaded || y$r_buff1_thd0 == (_Bool)0) && (! multithreaded || ((__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1) || __unbuffered_p1_EAX == 2))) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$read_delayed_var == 0) [2024-06-27 18:42:39,146 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 18:42:39,146 INFO L106 edCorrectnessWitness]: ghost_update [L811-L811] multithreaded = 1; [2024-06-27 18:42:39,195 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 18:42:39,384 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/rfi007_tso.i[944,957] [2024-06-27 18:42:39,582 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:42:39,593 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local [2024-06-27 18:42:39,631 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/rfi007_tso.i[944,957] Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 18:42:39,707 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 18:42:39,743 INFO L206 MainTranslator]: Completed translation [2024-06-27 18:42:39,743 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 06:42:39 WrapperNode [2024-06-27 18:42:39,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 18:42:39,746 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 18:42:39,746 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 18:42:39,746 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 18:42:39,753 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,779 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,807 INFO L138 Inliner]: procedures = 174, calls = 35, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2024-06-27 18:42:39,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 18:42:39,809 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 18:42:39,809 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 18:42:39,809 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 18:42:39,819 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,819 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,822 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,837 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 18:42:39,837 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,838 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,861 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,863 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,871 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,873 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 18:42:39,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 18:42:39,897 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 18:42:39,898 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 18:42:39,899 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 06:42:39" (1/1) ... [2024-06-27 18:42:39,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 18:42:39,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 18:42:39,942 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 18:42:39,968 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 18:42:39,981 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 18:42:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 18:42:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 18:42:39,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 18:42:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 18:42:39,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 18:42:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 18:42:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 18:42:39,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 18:42:39,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 18:42:39,985 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 18:42:40,107 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 18:42:40,109 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 18:42:40,518 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 18:42:40,519 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 18:42:40,691 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 18:42:40,691 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 18:42:40,691 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:42:40 BoogieIcfgContainer [2024-06-27 18:42:40,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 18:42:40,693 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 18:42:40,694 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 18:42:40,696 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 18:42:40,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 06:42:38" (1/4) ... [2024-06-27 18:42:40,697 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20097f45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 06:42:40, skipping insertion in model container [2024-06-27 18:42:40,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 06:42:39" (2/4) ... [2024-06-27 18:42:40,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20097f45 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:42:40, skipping insertion in model container [2024-06-27 18:42:40,698 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 06:42:39" (3/4) ... [2024-06-27 18:42:40,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20097f45 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 06:42:40, skipping insertion in model container [2024-06-27 18:42:40,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 06:42:40" (4/4) ... [2024-06-27 18:42:40,699 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi007_tso.i [2024-06-27 18:42:40,714 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 18:42:40,714 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-06-27 18:42:40,715 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 18:42:40,746 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 18:42:40,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 18:42:40,797 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2024-06-27 18:42:40,798 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:42:40,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-06-27 18:42:40,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 42 places, 36 transitions, 80 flow [2024-06-27 18:42:40,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 74 flow [2024-06-27 18:42:40,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 18:42:40,832 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;@14180dcc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 18:42:40,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-06-27 18:42:40,835 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 18:42:40,835 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 18:42:40,835 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 18:42:40,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:40,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 18:42:40,836 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:40,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:40,840 INFO L85 PathProgramCache]: Analyzing trace with hash 346938358, now seen corresponding path program 1 times [2024-06-27 18:42:40,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:40,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185061498] [2024-06-27 18:42:40,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:40,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:41,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:41,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:41,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185061498] [2024-06-27 18:42:41,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185061498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:41,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:41,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:42:41,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112756053] [2024-06-27 18:42:41,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:41,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:42:41,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:42:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:42:41,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-27 18:42:41,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:41,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:41,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-27 18:42:41,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:41,917 INFO L124 PetriNetUnfolderBase]: 543/952 cut-off events. [2024-06-27 18:42:41,917 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-27 18:42:41,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 952 events. 543/952 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4754 event pairs, 234 based on Foata normal form. 43/933 useless extension candidates. Maximal degree in co-relation 1861. Up to 892 conditions per place. [2024-06-27 18:42:41,929 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 32 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2024-06-27 18:42:41,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 171 flow [2024-06-27 18:42:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:42:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:42:41,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-06-27 18:42:41,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2024-06-27 18:42:41,943 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 74 flow. Second operand 3 states and 73 transitions. [2024-06-27 18:42:41,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 171 flow [2024-06-27 18:42:41,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:41,950 INFO L231 Difference]: Finished difference. Result has 41 places, 36 transitions, 98 flow [2024-06-27 18:42:41,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=41, PETRI_TRANSITIONS=36} [2024-06-27 18:42:41,955 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-06-27 18:42:41,956 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 36 transitions, 98 flow [2024-06-27 18:42:41,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:41,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:41,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 18:42:41,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:41,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:41,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1599562897, now seen corresponding path program 1 times [2024-06-27 18:42:41,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:41,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529186573] [2024-06-27 18:42:41,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:42,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:42,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529186573] [2024-06-27 18:42:42,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529186573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:42,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:42,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 18:42:42,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968708950] [2024-06-27 18:42:42,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:42,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:42:42,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:42,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:42:42,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:42:42,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:42:42,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 36 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:42,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:42,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:42:42,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:42,586 INFO L124 PetriNetUnfolderBase]: 621/1034 cut-off events. [2024-06-27 18:42:42,587 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2024-06-27 18:42:42,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2311 conditions, 1034 events. 621/1034 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4958 event pairs, 212 based on Foata normal form. 2/987 useless extension candidates. Maximal degree in co-relation 2299. Up to 997 conditions per place. [2024-06-27 18:42:42,594 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 42 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2024-06-27 18:42:42,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 246 flow [2024-06-27 18:42:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:42:42,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:42:42,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 91 transitions. [2024-06-27 18:42:42,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6319444444444444 [2024-06-27 18:42:42,598 INFO L175 Difference]: Start difference. First operand has 41 places, 36 transitions, 98 flow. Second operand 4 states and 91 transitions. [2024-06-27 18:42:42,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 246 flow [2024-06-27 18:42:42,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 57 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 18:42:42,602 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 132 flow [2024-06-27 18:42:42,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2024-06-27 18:42:42,603 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-06-27 18:42:42,604 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 132 flow [2024-06-27 18:42:42,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:42,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:42,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:42,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 18:42:42,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:42,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:42,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1953158983, now seen corresponding path program 1 times [2024-06-27 18:42:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:42,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038118833] [2024-06-27 18:42:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:43,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:43,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038118833] [2024-06-27 18:42:43,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038118833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:43,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:43,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:42:43,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401134899] [2024-06-27 18:42:43,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:43,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:42:43,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:43,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:42:43,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:42:43,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:42:43,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:43,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:43,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:42:43,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:43,335 INFO L124 PetriNetUnfolderBase]: 613/1163 cut-off events. [2024-06-27 18:42:43,335 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-06-27 18:42:43,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 1163 events. 613/1163 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6339 event pairs, 197 based on Foata normal form. 4/1073 useless extension candidates. Maximal degree in co-relation 2618. Up to 968 conditions per place. [2024-06-27 18:42:43,344 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 49 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2024-06-27 18:42:43,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 358 flow [2024-06-27 18:42:43,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:42:43,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:42:43,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-27 18:42:43,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 18:42:43,350 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 132 flow. Second operand 5 states and 108 transitions. [2024-06-27 18:42:43,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 358 flow [2024-06-27 18:42:43,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 332 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:43,354 INFO L231 Difference]: Finished difference. Result has 49 places, 51 transitions, 229 flow [2024-06-27 18:42:43,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=49, PETRI_TRANSITIONS=51} [2024-06-27 18:42:43,355 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 9 predicate places. [2024-06-27 18:42:43,355 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 51 transitions, 229 flow [2024-06-27 18:42:43,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:43,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:43,356 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:43,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 18:42:43,356 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:43,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1949687049, now seen corresponding path program 1 times [2024-06-27 18:42:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:43,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128699565] [2024-06-27 18:42:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:43,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:43,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:43,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128699565] [2024-06-27 18:42:43,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128699565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:43,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:43,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 18:42:43,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656873896] [2024-06-27 18:42:43,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:43,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 18:42:43,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:43,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 18:42:43,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 18:42:43,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 36 [2024-06-27 18:42:43,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 51 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:43,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:43,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 36 [2024-06-27 18:42:43,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:43,555 INFO L124 PetriNetUnfolderBase]: 236/604 cut-off events. [2024-06-27 18:42:43,556 INFO L125 PetriNetUnfolderBase]: For 268/294 co-relation queries the response was YES. [2024-06-27 18:42:43,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1282 conditions, 604 events. 236/604 cut-off events. For 268/294 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3681 event pairs, 110 based on Foata normal form. 10/575 useless extension candidates. Maximal degree in co-relation 1265. Up to 381 conditions per place. [2024-06-27 18:42:43,560 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 26 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2024-06-27 18:42:43,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 53 transitions, 270 flow [2024-06-27 18:42:43,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 18:42:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 18:42:43,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2024-06-27 18:42:43,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7129629629629629 [2024-06-27 18:42:43,561 INFO L175 Difference]: Start difference. First operand has 49 places, 51 transitions, 229 flow. Second operand 3 states and 77 transitions. [2024-06-27 18:42:43,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 53 transitions, 270 flow [2024-06-27 18:42:43,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 53 transitions, 266 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-06-27 18:42:43,564 INFO L231 Difference]: Finished difference. Result has 50 places, 45 transitions, 196 flow [2024-06-27 18:42:43,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=50, PETRI_TRANSITIONS=45} [2024-06-27 18:42:43,565 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 10 predicate places. [2024-06-27 18:42:43,565 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 45 transitions, 196 flow [2024-06-27 18:42:43,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:43,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:43,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:43,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 18:42:43,566 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:43,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:43,567 INFO L85 PathProgramCache]: Analyzing trace with hash 200585610, now seen corresponding path program 1 times [2024-06-27 18:42:43,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:43,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080579341] [2024-06-27 18:42:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:44,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080579341] [2024-06-27 18:42:44,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080579341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:44,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:44,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:44,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565317420] [2024-06-27 18:42:44,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:44,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:44,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:44,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:44,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:44,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:42:44,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 45 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 18:42:44,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:44,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:42:44,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:44,935 INFO L124 PetriNetUnfolderBase]: 531/1011 cut-off events. [2024-06-27 18:42:44,935 INFO L125 PetriNetUnfolderBase]: For 694/694 co-relation queries the response was YES. [2024-06-27 18:42:44,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 1011 events. 531/1011 cut-off events. For 694/694 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5174 event pairs, 180 based on Foata normal form. 4/972 useless extension candidates. Maximal degree in co-relation 2431. Up to 808 conditions per place. [2024-06-27 18:42:44,942 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 48 selfloop transitions, 12 changer transitions 1/69 dead transitions. [2024-06-27 18:42:44,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 376 flow [2024-06-27 18:42:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2024-06-27 18:42:44,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5509259259259259 [2024-06-27 18:42:44,944 INFO L175 Difference]: Start difference. First operand has 50 places, 45 transitions, 196 flow. Second operand 6 states and 119 transitions. [2024-06-27 18:42:44,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 376 flow [2024-06-27 18:42:44,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 69 transitions, 360 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:44,947 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 217 flow [2024-06-27 18:42:44,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=217, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2024-06-27 18:42:44,948 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 13 predicate places. [2024-06-27 18:42:44,948 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 217 flow [2024-06-27 18:42:44,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 18:42:44,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:44,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:44,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 18:42:44,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:44,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:44,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1043195360, now seen corresponding path program 1 times [2024-06-27 18:42:44,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:44,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140120690] [2024-06-27 18:42:44,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:45,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:45,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140120690] [2024-06-27 18:42:45,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140120690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:45,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:45,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:42:45,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480796155] [2024-06-27 18:42:45,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:45,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 18:42:45,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:45,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 18:42:45,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 18:42:45,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 18:42:45,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 18:42:45,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:45,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 18:42:45,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:45,638 INFO L124 PetriNetUnfolderBase]: 452/894 cut-off events. [2024-06-27 18:42:45,639 INFO L125 PetriNetUnfolderBase]: For 783/783 co-relation queries the response was YES. [2024-06-27 18:42:45,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2263 conditions, 894 events. 452/894 cut-off events. For 783/783 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4626 event pairs, 185 based on Foata normal form. 1/857 useless extension candidates. Maximal degree in co-relation 2242. Up to 738 conditions per place. [2024-06-27 18:42:45,645 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 48 selfloop transitions, 7 changer transitions 0/62 dead transitions. [2024-06-27 18:42:45,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 62 transitions, 386 flow [2024-06-27 18:42:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:42:45,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:42:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-06-27 18:42:45,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4777777777777778 [2024-06-27 18:42:45,647 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 217 flow. Second operand 5 states and 86 transitions. [2024-06-27 18:42:45,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 62 transitions, 386 flow [2024-06-27 18:42:45,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 62 transitions, 353 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:45,652 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 246 flow [2024-06-27 18:42:45,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2024-06-27 18:42:45,655 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2024-06-27 18:42:45,655 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 246 flow [2024-06-27 18:42:45,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 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 18:42:45,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:45,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:45,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 18:42:45,656 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:45,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:45,656 INFO L85 PathProgramCache]: Analyzing trace with hash -2020681263, now seen corresponding path program 1 times [2024-06-27 18:42:45,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:45,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223374046] [2024-06-27 18:42:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:46,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:46,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223374046] [2024-06-27 18:42:46,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223374046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:46,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:46,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:46,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680818343] [2024-06-27 18:42:46,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:46,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:46,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:46,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:46,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:46,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 36 [2024-06-27 18:42:46,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 246 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:46,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:46,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 36 [2024-06-27 18:42:46,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:46,735 INFO L124 PetriNetUnfolderBase]: 458/908 cut-off events. [2024-06-27 18:42:46,735 INFO L125 PetriNetUnfolderBase]: For 942/942 co-relation queries the response was YES. [2024-06-27 18:42:46,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2404 conditions, 908 events. 458/908 cut-off events. For 942/942 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4744 event pairs, 177 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 2380. Up to 724 conditions per place. [2024-06-27 18:42:46,741 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 54 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2024-06-27 18:42:46,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 71 transitions, 434 flow [2024-06-27 18:42:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 104 transitions. [2024-06-27 18:42:46,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:42:46,743 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 246 flow. Second operand 6 states and 104 transitions. [2024-06-27 18:42:46,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 71 transitions, 434 flow [2024-06-27 18:42:46,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 71 transitions, 425 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:46,746 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 283 flow [2024-06-27 18:42:46,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=283, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-06-27 18:42:46,747 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2024-06-27 18:42:46,747 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 283 flow [2024-06-27 18:42:46,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:46,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:46,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:46,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 18:42:46,748 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:46,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:46,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1475534119, now seen corresponding path program 1 times [2024-06-27 18:42:46,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:46,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958377233] [2024-06-27 18:42:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:46,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:47,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:47,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958377233] [2024-06-27 18:42:47,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958377233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:47,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:47,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:47,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762614687] [2024-06-27 18:42:47,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:47,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:47,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:47,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:47,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 283 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:47,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:47,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:47,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:47,595 INFO L124 PetriNetUnfolderBase]: 556/1065 cut-off events. [2024-06-27 18:42:47,596 INFO L125 PetriNetUnfolderBase]: For 1484/1484 co-relation queries the response was YES. [2024-06-27 18:42:47,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 1065 events. 556/1065 cut-off events. For 1484/1484 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5529 event pairs, 220 based on Foata normal form. 1/1018 useless extension candidates. Maximal degree in co-relation 2990. Up to 890 conditions per place. [2024-06-27 18:42:47,603 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 60 selfloop transitions, 10 changer transitions 0/76 dead transitions. [2024-06-27 18:42:47,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 498 flow [2024-06-27 18:42:47,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2024-06-27 18:42:47,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:42:47,604 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 283 flow. Second operand 6 states and 99 transitions. [2024-06-27 18:42:47,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 498 flow [2024-06-27 18:42:47,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 76 transitions, 474 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:47,609 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 325 flow [2024-06-27 18:42:47,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-06-27 18:42:47,609 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2024-06-27 18:42:47,610 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 325 flow [2024-06-27 18:42:47,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:47,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:47,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:47,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 18:42:47,610 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:47,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1783382335, now seen corresponding path program 2 times [2024-06-27 18:42:47,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:47,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008309046] [2024-06-27 18:42:47,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:47,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:48,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008309046] [2024-06-27 18:42:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008309046] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:48,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:48,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 18:42:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396937770] [2024-06-27 18:42:48,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:48,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 18:42:48,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:48,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 18:42:48,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 18:42:48,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:48,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:48,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:48,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:48,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:48,377 INFO L124 PetriNetUnfolderBase]: 559/1063 cut-off events. [2024-06-27 18:42:48,378 INFO L125 PetriNetUnfolderBase]: For 1938/1950 co-relation queries the response was YES. [2024-06-27 18:42:48,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3157 conditions, 1063 events. 559/1063 cut-off events. For 1938/1950 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5518 event pairs, 210 based on Foata normal form. 9/1026 useless extension candidates. Maximal degree in co-relation 3129. Up to 872 conditions per place. [2024-06-27 18:42:48,385 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 59 selfloop transitions, 13 changer transitions 0/78 dead transitions. [2024-06-27 18:42:48,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 78 transitions, 539 flow [2024-06-27 18:42:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 18:42:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 18:42:48,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-06-27 18:42:48,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 18:42:48,387 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 325 flow. Second operand 6 states and 100 transitions. [2024-06-27 18:42:48,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 78 transitions, 539 flow [2024-06-27 18:42:48,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 78 transitions, 520 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:48,391 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 353 flow [2024-06-27 18:42:48,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=353, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-06-27 18:42:48,392 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 24 predicate places. [2024-06-27 18:42:48,392 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 353 flow [2024-06-27 18:42:48,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:48,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:48,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:48,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 18:42:48,393 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:48,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash 681282037, now seen corresponding path program 1 times [2024-06-27 18:42:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053129792] [2024-06-27 18:42:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:48,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:48,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053129792] [2024-06-27 18:42:48,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053129792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:48,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:48,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:48,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173830158] [2024-06-27 18:42:48,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:48,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:48,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:48,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:48,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:48,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 353 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:48,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:48,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:48,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:49,385 INFO L124 PetriNetUnfolderBase]: 623/1177 cut-off events. [2024-06-27 18:42:49,386 INFO L125 PetriNetUnfolderBase]: For 2534/2534 co-relation queries the response was YES. [2024-06-27 18:42:49,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3687 conditions, 1177 events. 623/1177 cut-off events. For 2534/2534 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6091 event pairs, 174 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 3658. Up to 914 conditions per place. [2024-06-27 18:42:49,393 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 69 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-27 18:42:49,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 739 flow [2024-06-27 18:42:49,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:49,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2024-06-27 18:42:49,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2024-06-27 18:42:49,395 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 353 flow. Second operand 8 states and 137 transitions. [2024-06-27 18:42:49,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 739 flow [2024-06-27 18:42:49,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 105 transitions, 702 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:49,402 INFO L231 Difference]: Finished difference. Result has 71 places, 77 transitions, 538 flow [2024-06-27 18:42:49,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=538, PETRI_PLACES=71, PETRI_TRANSITIONS=77} [2024-06-27 18:42:49,403 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-06-27 18:42:49,403 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 77 transitions, 538 flow [2024-06-27 18:42:49,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:49,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:49,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:49,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 18:42:49,404 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:49,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:49,405 INFO L85 PathProgramCache]: Analyzing trace with hash -727896715, now seen corresponding path program 2 times [2024-06-27 18:42:49,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:49,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126791096] [2024-06-27 18:42:49,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:49,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:49,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:49,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:49,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126791096] [2024-06-27 18:42:49,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126791096] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:49,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:49,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:49,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083309864] [2024-06-27 18:42:49,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:49,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:49,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:49,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:49,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:49,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:49,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 77 transitions, 538 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:49,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:49,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:49,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:50,400 INFO L124 PetriNetUnfolderBase]: 645/1210 cut-off events. [2024-06-27 18:42:50,400 INFO L125 PetriNetUnfolderBase]: For 3565/3565 co-relation queries the response was YES. [2024-06-27 18:42:50,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4274 conditions, 1210 events. 645/1210 cut-off events. For 3565/3565 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6267 event pairs, 170 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 4241. Up to 924 conditions per place. [2024-06-27 18:42:50,410 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 66 selfloop transitions, 38 changer transitions 0/110 dead transitions. [2024-06-27 18:42:50,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 110 transitions, 898 flow [2024-06-27 18:42:50,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:50,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:50,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 18:42:50,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-27 18:42:50,412 INFO L175 Difference]: Start difference. First operand has 71 places, 77 transitions, 538 flow. Second operand 7 states and 121 transitions. [2024-06-27 18:42:50,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 110 transitions, 898 flow [2024-06-27 18:42:50,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 849 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:50,423 INFO L231 Difference]: Finished difference. Result has 76 places, 85 transitions, 661 flow [2024-06-27 18:42:50,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=661, PETRI_PLACES=76, PETRI_TRANSITIONS=85} [2024-06-27 18:42:50,423 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 36 predicate places. [2024-06-27 18:42:50,424 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 85 transitions, 661 flow [2024-06-27 18:42:50,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:50,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:50,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:50,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 18:42:50,425 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:50,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash -727775815, now seen corresponding path program 3 times [2024-06-27 18:42:50,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:50,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536395506] [2024-06-27 18:42:50,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:50,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:50,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:50,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:50,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536395506] [2024-06-27 18:42:50,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536395506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:50,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:50,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:50,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808881224] [2024-06-27 18:42:50,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:50,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:50,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:50,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:50,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 85 transitions, 661 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:50,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:50,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:50,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:51,395 INFO L124 PetriNetUnfolderBase]: 681/1252 cut-off events. [2024-06-27 18:42:51,395 INFO L125 PetriNetUnfolderBase]: For 5123/5123 co-relation queries the response was YES. [2024-06-27 18:42:51,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 1252 events. 681/1252 cut-off events. For 5123/5123 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 6381 event pairs, 173 based on Foata normal form. 2/1208 useless extension candidates. Maximal degree in co-relation 4885. Up to 927 conditions per place. [2024-06-27 18:42:51,406 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 73 selfloop transitions, 39 changer transitions 0/118 dead transitions. [2024-06-27 18:42:51,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 118 transitions, 1083 flow [2024-06-27 18:42:51,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:51,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:51,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 121 transitions. [2024-06-27 18:42:51,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4801587301587302 [2024-06-27 18:42:51,409 INFO L175 Difference]: Start difference. First operand has 76 places, 85 transitions, 661 flow. Second operand 7 states and 121 transitions. [2024-06-27 18:42:51,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 118 transitions, 1083 flow [2024-06-27 18:42:51,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 118 transitions, 995 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:51,425 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 785 flow [2024-06-27 18:42:51,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=785, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2024-06-27 18:42:51,427 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2024-06-27 18:42:51,427 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 785 flow [2024-06-27 18:42:51,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:51,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:51,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:51,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 18:42:51,428 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:51,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:51,428 INFO L85 PathProgramCache]: Analyzing trace with hash -673068166, now seen corresponding path program 1 times [2024-06-27 18:42:51,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:51,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119021116] [2024-06-27 18:42:51,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:51,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:52,056 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 18:42:52,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:52,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119021116] [2024-06-27 18:42:52,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119021116] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:52,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:52,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:52,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572662892] [2024-06-27 18:42:52,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:52,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:52,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:52,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:52,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:52,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:52,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 785 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:52,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:52,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:52,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:52,431 INFO L124 PetriNetUnfolderBase]: 694/1266 cut-off events. [2024-06-27 18:42:52,431 INFO L125 PetriNetUnfolderBase]: For 5289/5289 co-relation queries the response was YES. [2024-06-27 18:42:52,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4992 conditions, 1266 events. 694/1266 cut-off events. For 5289/5289 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6425 event pairs, 170 based on Foata normal form. 1/1224 useless extension candidates. Maximal degree in co-relation 4955. Up to 1080 conditions per place. [2024-06-27 18:42:52,439 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 98 selfloop transitions, 17 changer transitions 0/121 dead transitions. [2024-06-27 18:42:52,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 121 transitions, 1132 flow [2024-06-27 18:42:52,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-06-27 18:42:52,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45634920634920634 [2024-06-27 18:42:52,442 INFO L175 Difference]: Start difference. First operand has 81 places, 94 transitions, 785 flow. Second operand 7 states and 115 transitions. [2024-06-27 18:42:52,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 121 transitions, 1132 flow [2024-06-27 18:42:52,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 121 transitions, 1056 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 18:42:52,456 INFO L231 Difference]: Finished difference. Result has 84 places, 97 transitions, 782 flow [2024-06-27 18:42:52,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=782, PETRI_PLACES=84, PETRI_TRANSITIONS=97} [2024-06-27 18:42:52,457 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 44 predicate places. [2024-06-27 18:42:52,457 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 97 transitions, 782 flow [2024-06-27 18:42:52,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:52,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:52,457 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 18:42:52,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:52,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:52,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1193641792, now seen corresponding path program 2 times [2024-06-27 18:42:52,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:52,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090441548] [2024-06-27 18:42:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:52,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:53,356 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 18:42:53,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:53,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090441548] [2024-06-27 18:42:53,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090441548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:53,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:53,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:53,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310456224] [2024-06-27 18:42:53,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:53,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:53,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:53,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:53,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:53,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 97 transitions, 782 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:53,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:53,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:53,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:53,761 INFO L124 PetriNetUnfolderBase]: 712/1295 cut-off events. [2024-06-27 18:42:53,762 INFO L125 PetriNetUnfolderBase]: For 5737/5752 co-relation queries the response was YES. [2024-06-27 18:42:53,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 1295 events. 712/1295 cut-off events. For 5737/5752 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6601 event pairs, 159 based on Foata normal form. 11/1261 useless extension candidates. Maximal degree in co-relation 5154. Up to 1048 conditions per place. [2024-06-27 18:42:53,771 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 98 selfloop transitions, 27 changer transitions 0/131 dead transitions. [2024-06-27 18:42:53,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 131 transitions, 1227 flow [2024-06-27 18:42:53,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:53,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 118 transitions. [2024-06-27 18:42:53,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2024-06-27 18:42:53,773 INFO L175 Difference]: Start difference. First operand has 84 places, 97 transitions, 782 flow. Second operand 7 states and 118 transitions. [2024-06-27 18:42:53,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 131 transitions, 1227 flow [2024-06-27 18:42:53,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 1182 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:53,785 INFO L231 Difference]: Finished difference. Result has 87 places, 105 transitions, 885 flow [2024-06-27 18:42:53,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=737, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=885, PETRI_PLACES=87, PETRI_TRANSITIONS=105} [2024-06-27 18:42:53,785 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 47 predicate places. [2024-06-27 18:42:53,786 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 105 transitions, 885 flow [2024-06-27 18:42:53,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:53,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:53,786 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:53,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 18:42:53,786 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:53,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:53,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1498411379, now seen corresponding path program 4 times [2024-06-27 18:42:53,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:53,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195128106] [2024-06-27 18:42:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:53,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:54,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195128106] [2024-06-27 18:42:54,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195128106] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:54,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:54,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:54,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919395591] [2024-06-27 18:42:54,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:54,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:54,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:54,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:54,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:54,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 105 transitions, 885 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:54,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:54,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:54,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:54,767 INFO L124 PetriNetUnfolderBase]: 708/1292 cut-off events. [2024-06-27 18:42:54,767 INFO L125 PetriNetUnfolderBase]: For 6708/6714 co-relation queries the response was YES. [2024-06-27 18:42:54,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5445 conditions, 1292 events. 708/1292 cut-off events. For 6708/6714 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6594 event pairs, 163 based on Foata normal form. 2/1245 useless extension candidates. Maximal degree in co-relation 5405. Up to 931 conditions per place. [2024-06-27 18:42:54,775 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 87 selfloop transitions, 48 changer transitions 0/141 dead transitions. [2024-06-27 18:42:54,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 141 transitions, 1409 flow [2024-06-27 18:42:54,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 18:42:54,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:42:54,777 INFO L175 Difference]: Start difference. First operand has 87 places, 105 transitions, 885 flow. Second operand 7 states and 120 transitions. [2024-06-27 18:42:54,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 141 transitions, 1409 flow [2024-06-27 18:42:54,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 141 transitions, 1360 flow, removed 13 selfloop flow, removed 3 redundant places. [2024-06-27 18:42:54,789 INFO L231 Difference]: Finished difference. Result has 93 places, 118 transitions, 1135 flow [2024-06-27 18:42:54,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=839, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1135, PETRI_PLACES=93, PETRI_TRANSITIONS=118} [2024-06-27 18:42:54,790 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 53 predicate places. [2024-06-27 18:42:54,790 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 118 transitions, 1135 flow [2024-06-27 18:42:54,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:54,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:54,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:54,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 18:42:54,791 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:54,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:54,791 INFO L85 PathProgramCache]: Analyzing trace with hash -549721518, now seen corresponding path program 3 times [2024-06-27 18:42:54,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:54,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765458469] [2024-06-27 18:42:54,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:54,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:55,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:55,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:55,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765458469] [2024-06-27 18:42:55,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765458469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:55,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:55,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 18:42:55,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655587345] [2024-06-27 18:42:55,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:55,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:42:55,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:55,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:42:55,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:42:55,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:55,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 118 transitions, 1135 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:55,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:55,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:55,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:55,992 INFO L124 PetriNetUnfolderBase]: 706/1310 cut-off events. [2024-06-27 18:42:55,992 INFO L125 PetriNetUnfolderBase]: For 8139/8154 co-relation queries the response was YES. [2024-06-27 18:42:55,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 1310 events. 706/1310 cut-off events. For 8139/8154 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6871 event pairs, 158 based on Foata normal form. 11/1268 useless extension candidates. Maximal degree in co-relation 5834. Up to 1076 conditions per place. [2024-06-27 18:42:56,005 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 115 selfloop transitions, 24 changer transitions 0/145 dead transitions. [2024-06-27 18:42:56,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 145 transitions, 1556 flow [2024-06-27 18:42:56,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:56,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:56,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 116 transitions. [2024-06-27 18:42:56,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-06-27 18:42:56,007 INFO L175 Difference]: Start difference. First operand has 93 places, 118 transitions, 1135 flow. Second operand 7 states and 116 transitions. [2024-06-27 18:42:56,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 145 transitions, 1556 flow [2024-06-27 18:42:56,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 145 transitions, 1445 flow, removed 44 selfloop flow, removed 2 redundant places. [2024-06-27 18:42:56,031 INFO L231 Difference]: Finished difference. Result has 98 places, 119 transitions, 1104 flow [2024-06-27 18:42:56,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1040, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1104, PETRI_PLACES=98, PETRI_TRANSITIONS=119} [2024-06-27 18:42:56,032 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 58 predicate places. [2024-06-27 18:42:56,032 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 119 transitions, 1104 flow [2024-06-27 18:42:56,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:56,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:56,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:56,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 18:42:56,033 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:56,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:56,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1920200354, now seen corresponding path program 1 times [2024-06-27 18:42:56,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:56,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968218076] [2024-06-27 18:42:56,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:56,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:56,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:56,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968218076] [2024-06-27 18:42:56,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968218076] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:56,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:56,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:56,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646740679] [2024-06-27 18:42:56,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:56,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:56,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:56,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:56,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:56,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:56,863 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 119 transitions, 1104 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:56,863 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:56,863 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:56,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:57,313 INFO L124 PetriNetUnfolderBase]: 704/1285 cut-off events. [2024-06-27 18:42:57,313 INFO L125 PetriNetUnfolderBase]: For 7842/7842 co-relation queries the response was YES. [2024-06-27 18:42:57,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5833 conditions, 1285 events. 704/1285 cut-off events. For 7842/7842 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6544 event pairs, 171 based on Foata normal form. 1/1242 useless extension candidates. Maximal degree in co-relation 5787. Up to 997 conditions per place. [2024-06-27 18:42:57,323 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 103 selfloop transitions, 37 changer transitions 0/146 dead transitions. [2024-06-27 18:42:57,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 146 transitions, 1504 flow [2024-06-27 18:42:57,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 18:42:57,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 18:42:57,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 120 transitions. [2024-06-27 18:42:57,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-06-27 18:42:57,325 INFO L175 Difference]: Start difference. First operand has 98 places, 119 transitions, 1104 flow. Second operand 7 states and 120 transitions. [2024-06-27 18:42:57,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 146 transitions, 1504 flow [2024-06-27 18:42:57,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 146 transitions, 1419 flow, removed 21 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:57,349 INFO L231 Difference]: Finished difference. Result has 100 places, 121 transitions, 1143 flow [2024-06-27 18:42:57,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1143, PETRI_PLACES=100, PETRI_TRANSITIONS=121} [2024-06-27 18:42:57,350 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 60 predicate places. [2024-06-27 18:42:57,350 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 121 transitions, 1143 flow [2024-06-27 18:42:57,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:57,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:57,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:57,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 18:42:57,351 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:57,351 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:57,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1089960740, now seen corresponding path program 1 times [2024-06-27 18:42:57,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:57,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398296523] [2024-06-27 18:42:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:57,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:58,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:58,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398296523] [2024-06-27 18:42:58,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398296523] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:58,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:58,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:58,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18680903] [2024-06-27 18:42:58,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:58,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:58,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:58,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:58,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:58,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 121 transitions, 1143 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:58,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:58,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:58,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:42:58,671 INFO L124 PetriNetUnfolderBase]: 739/1364 cut-off events. [2024-06-27 18:42:58,671 INFO L125 PetriNetUnfolderBase]: For 8863/8863 co-relation queries the response was YES. [2024-06-27 18:42:58,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6178 conditions, 1364 events. 739/1364 cut-off events. For 8863/8863 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7163 event pairs, 163 based on Foata normal form. 2/1314 useless extension candidates. Maximal degree in co-relation 6131. Up to 996 conditions per place. [2024-06-27 18:42:58,682 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 115 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-27 18:42:58,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 165 transitions, 1673 flow [2024-06-27 18:42:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:42:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:42:58,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2024-06-27 18:42:58,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930555555555556 [2024-06-27 18:42:58,684 INFO L175 Difference]: Start difference. First operand has 100 places, 121 transitions, 1143 flow. Second operand 8 states and 142 transitions. [2024-06-27 18:42:58,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 165 transitions, 1673 flow [2024-06-27 18:42:58,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 165 transitions, 1609 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 18:42:58,708 INFO L231 Difference]: Finished difference. Result has 105 places, 130 transitions, 1305 flow [2024-06-27 18:42:58,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1079, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1305, PETRI_PLACES=105, PETRI_TRANSITIONS=130} [2024-06-27 18:42:58,709 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2024-06-27 18:42:58,709 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 130 transitions, 1305 flow [2024-06-27 18:42:58,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:58,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:42:58,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:42:58,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 18:42:58,710 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:42:58,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:42:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1086212840, now seen corresponding path program 2 times [2024-06-27 18:42:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:42:58,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181459131] [2024-06-27 18:42:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:42:58,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:42:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:42:59,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:42:59,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:42:59,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181459131] [2024-06-27 18:42:59,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181459131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:42:59,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:42:59,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:42:59,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540984165] [2024-06-27 18:42:59,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:42:59,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:42:59,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:42:59,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:42:59,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:42:59,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:42:59,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 130 transitions, 1305 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:42:59,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:42:59,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:42:59,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:00,088 INFO L124 PetriNetUnfolderBase]: 835/1544 cut-off events. [2024-06-27 18:43:00,089 INFO L125 PetriNetUnfolderBase]: For 12064/12064 co-relation queries the response was YES. [2024-06-27 18:43:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7467 conditions, 1544 events. 835/1544 cut-off events. For 12064/12064 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 8426 event pairs, 187 based on Foata normal form. 2/1483 useless extension candidates. Maximal degree in co-relation 7417. Up to 963 conditions per place. [2024-06-27 18:43:00,101 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 126 selfloop transitions, 45 changer transitions 0/177 dead transitions. [2024-06-27 18:43:00,102 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 177 transitions, 2005 flow [2024-06-27 18:43:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:00,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 145 transitions. [2024-06-27 18:43:00,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5034722222222222 [2024-06-27 18:43:00,105 INFO L175 Difference]: Start difference. First operand has 105 places, 130 transitions, 1305 flow. Second operand 8 states and 145 transitions. [2024-06-27 18:43:00,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 177 transitions, 2005 flow [2024-06-27 18:43:00,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 177 transitions, 1944 flow, removed 26 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:00,139 INFO L231 Difference]: Finished difference. Result has 113 places, 139 transitions, 1500 flow [2024-06-27 18:43:00,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1500, PETRI_PLACES=113, PETRI_TRANSITIONS=139} [2024-06-27 18:43:00,140 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 73 predicate places. [2024-06-27 18:43:00,140 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 139 transitions, 1500 flow [2024-06-27 18:43:00,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:00,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:00,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:00,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 18:43:00,141 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:00,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:00,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1086206082, now seen corresponding path program 1 times [2024-06-27 18:43:00,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:00,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922915859] [2024-06-27 18:43:00,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:00,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:00,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:00,879 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 18:43:00,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:00,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922915859] [2024-06-27 18:43:00,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922915859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:00,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:00,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:00,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341141765] [2024-06-27 18:43:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:00,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:00,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:00,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 139 transitions, 1500 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:00,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:00,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:00,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:01,350 INFO L124 PetriNetUnfolderBase]: 861/1560 cut-off events. [2024-06-27 18:43:01,350 INFO L125 PetriNetUnfolderBase]: For 15125/15125 co-relation queries the response was YES. [2024-06-27 18:43:01,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8174 conditions, 1560 events. 861/1560 cut-off events. For 15125/15125 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8394 event pairs, 200 based on Foata normal form. 2/1508 useless extension candidates. Maximal degree in co-relation 8120. Up to 1317 conditions per place. [2024-06-27 18:43:01,363 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 146 selfloop transitions, 20 changer transitions 0/172 dead transitions. [2024-06-27 18:43:01,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1988 flow [2024-06-27 18:43:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:01,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:01,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:43:01,365 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:43:01,365 INFO L175 Difference]: Start difference. First operand has 113 places, 139 transitions, 1500 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:43:01,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1988 flow [2024-06-27 18:43:01,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 172 transitions, 1915 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:01,400 INFO L231 Difference]: Finished difference. Result has 118 places, 142 transitions, 1523 flow [2024-06-27 18:43:01,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1523, PETRI_PLACES=118, PETRI_TRANSITIONS=142} [2024-06-27 18:43:01,400 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 78 predicate places. [2024-06-27 18:43:01,401 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 142 transitions, 1523 flow [2024-06-27 18:43:01,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:01,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:01,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:01,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 18:43:01,401 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:01,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:01,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1086206330, now seen corresponding path program 3 times [2024-06-27 18:43:01,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:01,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653087235] [2024-06-27 18:43:01,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:01,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:02,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:02,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653087235] [2024-06-27 18:43:02,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653087235] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:02,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:02,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:02,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49005504] [2024-06-27 18:43:02,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:02,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:02,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:02,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 142 transitions, 1523 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:02,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:02,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:02,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:02,605 INFO L124 PetriNetUnfolderBase]: 867/1582 cut-off events. [2024-06-27 18:43:02,606 INFO L125 PetriNetUnfolderBase]: For 15082/15082 co-relation queries the response was YES. [2024-06-27 18:43:02,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8292 conditions, 1582 events. 867/1582 cut-off events. For 15082/15082 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 8582 event pairs, 201 based on Foata normal form. 2/1526 useless extension candidates. Maximal degree in co-relation 8236. Up to 1327 conditions per place. [2024-06-27 18:43:02,622 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 149 selfloop transitions, 20 changer transitions 0/175 dead transitions. [2024-06-27 18:43:02,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 175 transitions, 2023 flow [2024-06-27 18:43:02,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:02,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:02,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:43:02,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:43:02,624 INFO L175 Difference]: Start difference. First operand has 118 places, 142 transitions, 1523 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:43:02,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 175 transitions, 2023 flow [2024-06-27 18:43:02,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 175 transitions, 1937 flow, removed 25 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:02,662 INFO L231 Difference]: Finished difference. Result has 120 places, 145 transitions, 1535 flow [2024-06-27 18:43:02,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1535, PETRI_PLACES=120, PETRI_TRANSITIONS=145} [2024-06-27 18:43:02,663 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 80 predicate places. [2024-06-27 18:43:02,663 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 145 transitions, 1535 flow [2024-06-27 18:43:02,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:02,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:02,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:02,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 18:43:02,664 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:02,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:02,665 INFO L85 PathProgramCache]: Analyzing trace with hash 138503102, now seen corresponding path program 2 times [2024-06-27 18:43:02,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:02,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650570041] [2024-06-27 18:43:02,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:02,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:03,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650570041] [2024-06-27 18:43:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650570041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:03,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:03,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:03,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007206416] [2024-06-27 18:43:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:03,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:03,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:03,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:03,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:03,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 145 transitions, 1535 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:03,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:03,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:03,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:03,821 INFO L124 PetriNetUnfolderBase]: 893/1644 cut-off events. [2024-06-27 18:43:03,821 INFO L125 PetriNetUnfolderBase]: For 16530/16548 co-relation queries the response was YES. [2024-06-27 18:43:03,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8499 conditions, 1644 events. 893/1644 cut-off events. For 16530/16548 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 9120 event pairs, 189 based on Foata normal form. 14/1591 useless extension candidates. Maximal degree in co-relation 8442. Up to 1344 conditions per place. [2024-06-27 18:43:03,836 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 147 selfloop transitions, 27 changer transitions 0/180 dead transitions. [2024-06-27 18:43:03,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 180 transitions, 2063 flow [2024-06-27 18:43:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 133 transitions. [2024-06-27 18:43:03,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618055555555556 [2024-06-27 18:43:03,838 INFO L175 Difference]: Start difference. First operand has 120 places, 145 transitions, 1535 flow. Second operand 8 states and 133 transitions. [2024-06-27 18:43:03,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 180 transitions, 2063 flow [2024-06-27 18:43:03,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 180 transitions, 1997 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:03,876 INFO L231 Difference]: Finished difference. Result has 122 places, 148 transitions, 1585 flow [2024-06-27 18:43:03,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1469, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1585, PETRI_PLACES=122, PETRI_TRANSITIONS=148} [2024-06-27 18:43:03,876 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 82 predicate places. [2024-06-27 18:43:03,876 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 148 transitions, 1585 flow [2024-06-27 18:43:03,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:03,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:03,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:03,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 18:43:03,877 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:03,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash 138502854, now seen corresponding path program 4 times [2024-06-27 18:43:03,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:03,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549291408] [2024-06-27 18:43:03,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:03,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:04,673 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 18:43:04,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:04,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549291408] [2024-06-27 18:43:04,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549291408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:04,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:04,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:04,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416673101] [2024-06-27 18:43:04,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:04,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:04,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:04,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:04,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:04,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:04,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 148 transitions, 1585 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:04,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:04,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:04,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:05,206 INFO L124 PetriNetUnfolderBase]: 919/1693 cut-off events. [2024-06-27 18:43:05,206 INFO L125 PetriNetUnfolderBase]: For 18187/18187 co-relation queries the response was YES. [2024-06-27 18:43:05,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8868 conditions, 1693 events. 919/1693 cut-off events. For 18187/18187 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9476 event pairs, 276 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 8810. Up to 1384 conditions per place. [2024-06-27 18:43:05,218 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 149 selfloop transitions, 30 changer transitions 0/185 dead transitions. [2024-06-27 18:43:05,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 185 transitions, 2168 flow [2024-06-27 18:43:05,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:05,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:05,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 18:43:05,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-27 18:43:05,225 INFO L175 Difference]: Start difference. First operand has 122 places, 148 transitions, 1585 flow. Second operand 9 states and 143 transitions. [2024-06-27 18:43:05,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 185 transitions, 2168 flow [2024-06-27 18:43:05,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 185 transitions, 2072 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:05,269 INFO L231 Difference]: Finished difference. Result has 126 places, 154 transitions, 1652 flow [2024-06-27 18:43:05,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1652, PETRI_PLACES=126, PETRI_TRANSITIONS=154} [2024-06-27 18:43:05,270 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 86 predicate places. [2024-06-27 18:43:05,270 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 154 transitions, 1652 flow [2024-06-27 18:43:05,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:05,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:05,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:05,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 18:43:05,272 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:05,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash 146777064, now seen corresponding path program 5 times [2024-06-27 18:43:05,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:05,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345961090] [2024-06-27 18:43:05,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:05,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:05,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:05,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:05,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345961090] [2024-06-27 18:43:05,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345961090] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:05,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:05,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:05,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298903447] [2024-06-27 18:43:05,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:05,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:05,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:05,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:05,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:05,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:05,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 154 transitions, 1652 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:05,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:05,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:05,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:06,360 INFO L124 PetriNetUnfolderBase]: 945/1715 cut-off events. [2024-06-27 18:43:06,360 INFO L125 PetriNetUnfolderBase]: For 19388/19388 co-relation queries the response was YES. [2024-06-27 18:43:06,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9137 conditions, 1715 events. 945/1715 cut-off events. For 19388/19388 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9450 event pairs, 189 based on Foata normal form. 2/1653 useless extension candidates. Maximal degree in co-relation 9077. Up to 1340 conditions per place. [2024-06-27 18:43:06,373 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 143 selfloop transitions, 39 changer transitions 0/188 dead transitions. [2024-06-27 18:43:06,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 188 transitions, 2204 flow [2024-06-27 18:43:06,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:06,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:43:06,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:43:06,381 INFO L175 Difference]: Start difference. First operand has 126 places, 154 transitions, 1652 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:43:06,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 188 transitions, 2204 flow [2024-06-27 18:43:06,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 188 transitions, 2113 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:06,437 INFO L231 Difference]: Finished difference. Result has 129 places, 157 transitions, 1709 flow [2024-06-27 18:43:06,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1561, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1709, PETRI_PLACES=129, PETRI_TRANSITIONS=157} [2024-06-27 18:43:06,438 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 89 predicate places. [2024-06-27 18:43:06,438 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 157 transitions, 1709 flow [2024-06-27 18:43:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:06,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:06,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:06,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 18:43:06,440 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:06,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:06,440 INFO L85 PathProgramCache]: Analyzing trace with hash 146777312, now seen corresponding path program 3 times [2024-06-27 18:43:06,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:06,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439072589] [2024-06-27 18:43:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:06,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:06,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:07,162 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 18:43:07,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439072589] [2024-06-27 18:43:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439072589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822335147] [2024-06-27 18:43:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:07,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:07,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:07,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:07,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:07,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 157 transitions, 1709 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:07,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:07,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:07,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:07,618 INFO L124 PetriNetUnfolderBase]: 981/1771 cut-off events. [2024-06-27 18:43:07,618 INFO L125 PetriNetUnfolderBase]: For 21981/21981 co-relation queries the response was YES. [2024-06-27 18:43:07,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9649 conditions, 1771 events. 981/1771 cut-off events. For 21981/21981 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9795 event pairs, 186 based on Foata normal form. 2/1709 useless extension candidates. Maximal degree in co-relation 9587. Up to 1338 conditions per place. [2024-06-27 18:43:07,628 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 146 selfloop transitions, 44 changer transitions 0/196 dead transitions. [2024-06-27 18:43:07,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 196 transitions, 2379 flow [2024-06-27 18:43:07,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 139 transitions. [2024-06-27 18:43:07,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826388888888889 [2024-06-27 18:43:07,629 INFO L175 Difference]: Start difference. First operand has 129 places, 157 transitions, 1709 flow. Second operand 8 states and 139 transitions. [2024-06-27 18:43:07,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 196 transitions, 2379 flow [2024-06-27 18:43:07,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 196 transitions, 2253 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:07,665 INFO L231 Difference]: Finished difference. Result has 131 places, 163 transitions, 1803 flow [2024-06-27 18:43:07,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1583, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1803, PETRI_PLACES=131, PETRI_TRANSITIONS=163} [2024-06-27 18:43:07,666 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 91 predicate places. [2024-06-27 18:43:07,666 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 163 transitions, 1803 flow [2024-06-27 18:43:07,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:07,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:07,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:07,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 18:43:07,666 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:07,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash 147073982, now seen corresponding path program 4 times [2024-06-27 18:43:07,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:07,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944865994] [2024-06-27 18:43:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:07,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:08,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:08,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944865994] [2024-06-27 18:43:08,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944865994] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:08,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:08,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813092033] [2024-06-27 18:43:08,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:08,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:08,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:08,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:08,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:08,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:08,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 163 transitions, 1803 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:08,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:08,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:08,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:08,930 INFO L124 PetriNetUnfolderBase]: 977/1761 cut-off events. [2024-06-27 18:43:08,930 INFO L125 PetriNetUnfolderBase]: For 22227/22227 co-relation queries the response was YES. [2024-06-27 18:43:08,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9620 conditions, 1761 events. 977/1761 cut-off events. For 22227/22227 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9692 event pairs, 212 based on Foata normal form. 2/1701 useless extension candidates. Maximal degree in co-relation 9557. Up to 1487 conditions per place. [2024-06-27 18:43:08,944 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 167 selfloop transitions, 18 changer transitions 0/191 dead transitions. [2024-06-27 18:43:08,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 191 transitions, 2272 flow [2024-06-27 18:43:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2024-06-27 18:43:08,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:43:08,948 INFO L175 Difference]: Start difference. First operand has 131 places, 163 transitions, 1803 flow. Second operand 8 states and 132 transitions. [2024-06-27 18:43:08,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 191 transitions, 2272 flow [2024-06-27 18:43:08,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 191 transitions, 2121 flow, removed 53 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:08,996 INFO L231 Difference]: Finished difference. Result has 135 places, 163 transitions, 1694 flow [2024-06-27 18:43:08,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1652, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1694, PETRI_PLACES=135, PETRI_TRANSITIONS=163} [2024-06-27 18:43:08,997 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 95 predicate places. [2024-06-27 18:43:08,997 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 163 transitions, 1694 flow [2024-06-27 18:43:08,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:08,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:08,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:08,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 18:43:08,998 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:08,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:08,998 INFO L85 PathProgramCache]: Analyzing trace with hash 138496344, now seen corresponding path program 6 times [2024-06-27 18:43:08,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:08,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12669188] [2024-06-27 18:43:08,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:08,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:09,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:09,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:09,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12669188] [2024-06-27 18:43:09,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12669188] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:09,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:09,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:09,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901980022] [2024-06-27 18:43:09,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:09,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:09,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:09,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:09,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:09,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:09,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 163 transitions, 1694 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:09,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:09,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:09,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:10,182 INFO L124 PetriNetUnfolderBase]: 983/1769 cut-off events. [2024-06-27 18:43:10,183 INFO L125 PetriNetUnfolderBase]: For 20313/20313 co-relation queries the response was YES. [2024-06-27 18:43:10,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9395 conditions, 1769 events. 983/1769 cut-off events. For 20313/20313 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9743 event pairs, 170 based on Foata normal form. 2/1706 useless extension candidates. Maximal degree in co-relation 9330. Up to 1248 conditions per place. [2024-06-27 18:43:10,194 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 141 selfloop transitions, 59 changer transitions 0/206 dead transitions. [2024-06-27 18:43:10,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 206 transitions, 2426 flow [2024-06-27 18:43:10,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:10,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:10,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 140 transitions. [2024-06-27 18:43:10,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:43:10,195 INFO L175 Difference]: Start difference. First operand has 135 places, 163 transitions, 1694 flow. Second operand 8 states and 140 transitions. [2024-06-27 18:43:10,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 206 transitions, 2426 flow [2024-06-27 18:43:10,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 206 transitions, 2346 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:10,270 INFO L231 Difference]: Finished difference. Result has 137 places, 174 transitions, 2000 flow [2024-06-27 18:43:10,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1614, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2000, PETRI_PLACES=137, PETRI_TRANSITIONS=174} [2024-06-27 18:43:10,271 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 97 predicate places. [2024-06-27 18:43:10,271 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 174 transitions, 2000 flow [2024-06-27 18:43:10,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:10,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:10,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:10,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 18:43:10,272 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:10,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:10,272 INFO L85 PathProgramCache]: Analyzing trace with hash 147084894, now seen corresponding path program 1 times [2024-06-27 18:43:10,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:10,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027131] [2024-06-27 18:43:10,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:10,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:11,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:11,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027131] [2024-06-27 18:43:11,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:11,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:11,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 18:43:11,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475798337] [2024-06-27 18:43:11,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:11,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 18:43:11,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:11,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 18:43:11,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 18:43:11,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:11,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 174 transitions, 2000 flow. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 18:43:11,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:11,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:11,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:11,599 INFO L124 PetriNetUnfolderBase]: 987/1785 cut-off events. [2024-06-27 18:43:11,599 INFO L125 PetriNetUnfolderBase]: For 23175/23175 co-relation queries the response was YES. [2024-06-27 18:43:11,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9808 conditions, 1785 events. 987/1785 cut-off events. For 23175/23175 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9903 event pairs, 212 based on Foata normal form. 2/1723 useless extension candidates. Maximal degree in co-relation 9741. Up to 1512 conditions per place. [2024-06-27 18:43:11,610 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 181 selfloop transitions, 17 changer transitions 0/204 dead transitions. [2024-06-27 18:43:11,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 204 transitions, 2541 flow [2024-06-27 18:43:11,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:11,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:11,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 131 transitions. [2024-06-27 18:43:11,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4548611111111111 [2024-06-27 18:43:11,611 INFO L175 Difference]: Start difference. First operand has 137 places, 174 transitions, 2000 flow. Second operand 8 states and 131 transitions. [2024-06-27 18:43:11,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 204 transitions, 2541 flow [2024-06-27 18:43:11,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 204 transitions, 2392 flow, removed 64 selfloop flow, removed 2 redundant places. [2024-06-27 18:43:11,661 INFO L231 Difference]: Finished difference. Result has 143 places, 176 transitions, 1940 flow [2024-06-27 18:43:11,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=135, 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=8, PETRI_FLOW=1940, PETRI_PLACES=143, PETRI_TRANSITIONS=176} [2024-06-27 18:43:11,662 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 103 predicate places. [2024-06-27 18:43:11,662 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 176 transitions, 1940 flow [2024-06-27 18:43:11,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 9 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 18:43:11,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:11,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:11,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 18:43:11,663 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:11,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:11,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1602298332, now seen corresponding path program 1 times [2024-06-27 18:43:11,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:11,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568424625] [2024-06-27 18:43:11,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:11,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:12,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:12,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:12,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568424625] [2024-06-27 18:43:12,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568424625] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:12,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:12,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:12,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237420633] [2024-06-27 18:43:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:12,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:12,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:12,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 176 transitions, 1940 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:12,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:12,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:12,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:12,865 INFO L124 PetriNetUnfolderBase]: 1009/1803 cut-off events. [2024-06-27 18:43:12,865 INFO L125 PetriNetUnfolderBase]: For 23144/23144 co-relation queries the response was YES. [2024-06-27 18:43:12,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9885 conditions, 1803 events. 1009/1803 cut-off events. For 23144/23144 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 9886 event pairs, 183 based on Foata normal form. 2/1748 useless extension candidates. Maximal degree in co-relation 9816. Up to 1476 conditions per place. [2024-06-27 18:43:12,877 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 165 selfloop transitions, 43 changer transitions 0/214 dead transitions. [2024-06-27 18:43:12,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 214 transitions, 2602 flow [2024-06-27 18:43:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:12,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:12,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 136 transitions. [2024-06-27 18:43:12,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:43:12,878 INFO L175 Difference]: Start difference. First operand has 143 places, 176 transitions, 1940 flow. Second operand 8 states and 136 transitions. [2024-06-27 18:43:12,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 214 transitions, 2602 flow [2024-06-27 18:43:12,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 214 transitions, 2531 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:12,929 INFO L231 Difference]: Finished difference. Result has 147 places, 188 transitions, 2160 flow [2024-06-27 18:43:12,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1869, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2160, PETRI_PLACES=147, PETRI_TRANSITIONS=188} [2024-06-27 18:43:12,930 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 107 predicate places. [2024-06-27 18:43:12,930 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 188 transitions, 2160 flow [2024-06-27 18:43:12,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:12,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:12,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:12,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 18:43:12,931 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:12,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1602359867, now seen corresponding path program 1 times [2024-06-27 18:43:12,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:12,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390839032] [2024-06-27 18:43:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:12,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:13,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:13,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390839032] [2024-06-27 18:43:13,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390839032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:13,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:13,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:13,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22818243] [2024-06-27 18:43:13,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:13,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:13,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:13,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:13,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:13,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:13,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 188 transitions, 2160 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:13,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:13,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:13,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:14,357 INFO L124 PetriNetUnfolderBase]: 1013/1840 cut-off events. [2024-06-27 18:43:14,357 INFO L125 PetriNetUnfolderBase]: For 24252/24252 co-relation queries the response was YES. [2024-06-27 18:43:14,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10177 conditions, 1840 events. 1013/1840 cut-off events. For 24252/24252 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10286 event pairs, 216 based on Foata normal form. 1/1774 useless extension candidates. Maximal degree in co-relation 10105. Up to 1377 conditions per place. [2024-06-27 18:43:14,368 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 169 selfloop transitions, 49 changer transitions 0/224 dead transitions. [2024-06-27 18:43:14,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 224 transitions, 2799 flow [2024-06-27 18:43:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:14,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-06-27 18:43:14,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2024-06-27 18:43:14,369 INFO L175 Difference]: Start difference. First operand has 147 places, 188 transitions, 2160 flow. Second operand 8 states and 141 transitions. [2024-06-27 18:43:14,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 224 transitions, 2799 flow [2024-06-27 18:43:14,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 224 transitions, 2692 flow, removed 35 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:14,421 INFO L231 Difference]: Finished difference. Result has 153 places, 192 transitions, 2278 flow [2024-06-27 18:43:14,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2278, PETRI_PLACES=153, PETRI_TRANSITIONS=192} [2024-06-27 18:43:14,422 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 113 predicate places. [2024-06-27 18:43:14,422 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 192 transitions, 2278 flow [2024-06-27 18:43:14,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:14,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:14,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:14,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 18:43:14,423 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:14,423 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:14,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1119699690, now seen corresponding path program 2 times [2024-06-27 18:43:14,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:14,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340704631] [2024-06-27 18:43:14,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:14,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:15,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:15,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340704631] [2024-06-27 18:43:15,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340704631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:15,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:15,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:15,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684202016] [2024-06-27 18:43:15,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:15,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:15,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 192 transitions, 2278 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:15,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:15,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:15,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:15,779 INFO L124 PetriNetUnfolderBase]: 1028/1832 cut-off events. [2024-06-27 18:43:15,779 INFO L125 PetriNetUnfolderBase]: For 27493/27493 co-relation queries the response was YES. [2024-06-27 18:43:15,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10474 conditions, 1832 events. 1028/1832 cut-off events. For 27493/27493 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 10060 event pairs, 224 based on Foata normal form. 2/1778 useless extension candidates. Maximal degree in co-relation 10400. Up to 1478 conditions per place. [2024-06-27 18:43:15,790 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 169 selfloop transitions, 46 changer transitions 0/221 dead transitions. [2024-06-27 18:43:15,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 221 transitions, 2870 flow [2024-06-27 18:43:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 18:43:15,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 18:43:15,791 INFO L175 Difference]: Start difference. First operand has 153 places, 192 transitions, 2278 flow. Second operand 8 states and 135 transitions. [2024-06-27 18:43:15,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 221 transitions, 2870 flow [2024-06-27 18:43:15,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 221 transitions, 2766 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:15,850 INFO L231 Difference]: Finished difference. Result has 157 places, 194 transitions, 2337 flow [2024-06-27 18:43:15,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2174, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2337, PETRI_PLACES=157, PETRI_TRANSITIONS=194} [2024-06-27 18:43:15,850 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 117 predicate places. [2024-06-27 18:43:15,850 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 194 transitions, 2337 flow [2024-06-27 18:43:15,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:15,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:15,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:15,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 18:43:15,851 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:15,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:15,851 INFO L85 PathProgramCache]: Analyzing trace with hash 570956404, now seen corresponding path program 1 times [2024-06-27 18:43:15,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:15,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241671901] [2024-06-27 18:43:15,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:15,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:16,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:16,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:16,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241671901] [2024-06-27 18:43:16,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241671901] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792352769] [2024-06-27 18:43:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:16,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:16,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:16,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:16,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 194 transitions, 2337 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:16,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:16,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:16,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:17,041 INFO L124 PetriNetUnfolderBase]: 1080/1948 cut-off events. [2024-06-27 18:43:17,041 INFO L125 PetriNetUnfolderBase]: For 31635/31635 co-relation queries the response was YES. [2024-06-27 18:43:17,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11014 conditions, 1948 events. 1080/1948 cut-off events. For 31635/31635 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10989 event pairs, 211 based on Foata normal form. 4/1884 useless extension candidates. Maximal degree in co-relation 10939. Up to 1468 conditions per place. [2024-06-27 18:43:17,053 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 179 selfloop transitions, 52 changer transitions 0/237 dead transitions. [2024-06-27 18:43:17,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 237 transitions, 3025 flow [2024-06-27 18:43:17,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:17,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 160 transitions. [2024-06-27 18:43:17,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2024-06-27 18:43:17,055 INFO L175 Difference]: Start difference. First operand has 157 places, 194 transitions, 2337 flow. Second operand 9 states and 160 transitions. [2024-06-27 18:43:17,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 237 transitions, 3025 flow [2024-06-27 18:43:17,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 237 transitions, 2882 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:17,114 INFO L231 Difference]: Finished difference. Result has 160 places, 197 transitions, 2382 flow [2024-06-27 18:43:17,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2194, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2382, PETRI_PLACES=160, PETRI_TRANSITIONS=197} [2024-06-27 18:43:17,115 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 120 predicate places. [2024-06-27 18:43:17,115 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 197 transitions, 2382 flow [2024-06-27 18:43:17,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:17,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:17,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 18:43:17,116 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:17,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:17,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1352605552, now seen corresponding path program 2 times [2024-06-27 18:43:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:17,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215409298] [2024-06-27 18:43:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:17,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:17,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215409298] [2024-06-27 18:43:17,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215409298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:17,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:17,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:17,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133515041] [2024-06-27 18:43:17,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:17,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:17,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:17,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:17,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:17,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:17,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 197 transitions, 2382 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:17,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:17,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:17,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:18,423 INFO L124 PetriNetUnfolderBase]: 1106/2021 cut-off events. [2024-06-27 18:43:18,423 INFO L125 PetriNetUnfolderBase]: For 32716/32716 co-relation queries the response was YES. [2024-06-27 18:43:18,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11378 conditions, 2021 events. 1106/2021 cut-off events. For 32716/32716 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11698 event pairs, 210 based on Foata normal form. 2/1943 useless extension candidates. Maximal degree in co-relation 11302. Up to 1471 conditions per place. [2024-06-27 18:43:18,436 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 178 selfloop transitions, 55 changer transitions 0/239 dead transitions. [2024-06-27 18:43:18,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 239 transitions, 3103 flow [2024-06-27 18:43:18,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:18,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:18,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 158 transitions. [2024-06-27 18:43:18,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4876543209876543 [2024-06-27 18:43:18,438 INFO L175 Difference]: Start difference. First operand has 160 places, 197 transitions, 2382 flow. Second operand 9 states and 158 transitions. [2024-06-27 18:43:18,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 239 transitions, 3103 flow [2024-06-27 18:43:18,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 239 transitions, 2937 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:18,498 INFO L231 Difference]: Finished difference. Result has 163 places, 202 transitions, 2479 flow [2024-06-27 18:43:18,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2479, PETRI_PLACES=163, PETRI_TRANSITIONS=202} [2024-06-27 18:43:18,499 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 123 predicate places. [2024-06-27 18:43:18,499 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 202 transitions, 2479 flow [2024-06-27 18:43:18,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:18,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:18,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:18,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 18:43:18,500 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:18,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:18,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1352611504, now seen corresponding path program 3 times [2024-06-27 18:43:18,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:18,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581620127] [2024-06-27 18:43:18,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:18,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:19,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:19,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581620127] [2024-06-27 18:43:19,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581620127] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:19,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:19,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:19,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899919524] [2024-06-27 18:43:19,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:19,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:19,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:19,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:19,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:19,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 202 transitions, 2479 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:19,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:19,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:19,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:19,753 INFO L124 PetriNetUnfolderBase]: 1121/1980 cut-off events. [2024-06-27 18:43:19,754 INFO L125 PetriNetUnfolderBase]: For 34544/34544 co-relation queries the response was YES. [2024-06-27 18:43:19,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11559 conditions, 1980 events. 1121/1980 cut-off events. For 34544/34544 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11011 event pairs, 220 based on Foata normal form. 2/1924 useless extension candidates. Maximal degree in co-relation 11481. Up to 1600 conditions per place. [2024-06-27 18:43:19,767 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 175 selfloop transitions, 49 changer transitions 0/230 dead transitions. [2024-06-27 18:43:19,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 230 transitions, 3103 flow [2024-06-27 18:43:19,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:19,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:19,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2024-06-27 18:43:19,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2024-06-27 18:43:19,769 INFO L175 Difference]: Start difference. First operand has 163 places, 202 transitions, 2479 flow. Second operand 8 states and 135 transitions. [2024-06-27 18:43:19,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 230 transitions, 3103 flow [2024-06-27 18:43:19,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 230 transitions, 2957 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:19,852 INFO L231 Difference]: Finished difference. Result has 166 places, 204 transitions, 2508 flow [2024-06-27 18:43:19,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2508, PETRI_PLACES=166, PETRI_TRANSITIONS=204} [2024-06-27 18:43:19,852 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 126 predicate places. [2024-06-27 18:43:19,852 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 204 transitions, 2508 flow [2024-06-27 18:43:19,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:19,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:19,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:19,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 18:43:19,853 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:19,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:19,853 INFO L85 PathProgramCache]: Analyzing trace with hash 687343114, now seen corresponding path program 3 times [2024-06-27 18:43:19,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:19,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490551835] [2024-06-27 18:43:19,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:19,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:20,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:20,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490551835] [2024-06-27 18:43:20,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490551835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:20,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:20,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:20,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580343640] [2024-06-27 18:43:20,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:20,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:20,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:20,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:20,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:20,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:20,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 204 transitions, 2508 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:20,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:20,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:20,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:21,116 INFO L124 PetriNetUnfolderBase]: 1237/2149 cut-off events. [2024-06-27 18:43:21,116 INFO L125 PetriNetUnfolderBase]: For 42666/42666 co-relation queries the response was YES. [2024-06-27 18:43:21,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12893 conditions, 2149 events. 1237/2149 cut-off events. For 42666/42666 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 11931 event pairs, 255 based on Foata normal form. 2/2097 useless extension candidates. Maximal degree in co-relation 12814. Up to 1747 conditions per place. [2024-06-27 18:43:21,130 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 213 selfloop transitions, 33 changer transitions 0/252 dead transitions. [2024-06-27 18:43:21,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 252 transitions, 3538 flow [2024-06-27 18:43:21,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:21,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:21,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:43:21,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 18:43:21,131 INFO L175 Difference]: Start difference. First operand has 166 places, 204 transitions, 2508 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:43:21,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 252 transitions, 3538 flow [2024-06-27 18:43:21,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 252 transitions, 3373 flow, removed 34 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:21,212 INFO L231 Difference]: Finished difference. Result has 170 places, 214 transitions, 2684 flow [2024-06-27 18:43:21,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2684, PETRI_PLACES=170, PETRI_TRANSITIONS=214} [2024-06-27 18:43:21,212 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 130 predicate places. [2024-06-27 18:43:21,212 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 214 transitions, 2684 flow [2024-06-27 18:43:21,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:21,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:21,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:21,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 18:43:21,213 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:21,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:21,213 INFO L85 PathProgramCache]: Analyzing trace with hash 687350554, now seen corresponding path program 4 times [2024-06-27 18:43:21,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:21,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705773130] [2024-06-27 18:43:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:21,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:21,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:21,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:21,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705773130] [2024-06-27 18:43:21,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705773130] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:21,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:21,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:21,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614484001] [2024-06-27 18:43:21,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:21,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:21,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:21,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:21,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:21,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:21,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 214 transitions, 2684 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:21,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:21,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:21,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:22,431 INFO L124 PetriNetUnfolderBase]: 1229/2137 cut-off events. [2024-06-27 18:43:22,431 INFO L125 PetriNetUnfolderBase]: For 42510/42510 co-relation queries the response was YES. [2024-06-27 18:43:22,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12988 conditions, 2137 events. 1229/2137 cut-off events. For 42510/42510 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11872 event pairs, 253 based on Foata normal form. 4/2087 useless extension candidates. Maximal degree in co-relation 12907. Up to 1743 conditions per place. [2024-06-27 18:43:22,448 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 213 selfloop transitions, 32 changer transitions 0/251 dead transitions. [2024-06-27 18:43:22,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 251 transitions, 3402 flow [2024-06-27 18:43:22,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 155 transitions. [2024-06-27 18:43:22,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-06-27 18:43:22,449 INFO L175 Difference]: Start difference. First operand has 170 places, 214 transitions, 2684 flow. Second operand 9 states and 155 transitions. [2024-06-27 18:43:22,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 251 transitions, 3402 flow [2024-06-27 18:43:22,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 251 transitions, 3234 flow, removed 78 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:22,542 INFO L231 Difference]: Finished difference. Result has 176 places, 214 transitions, 2587 flow [2024-06-27 18:43:22,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2516, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2587, PETRI_PLACES=176, PETRI_TRANSITIONS=214} [2024-06-27 18:43:22,543 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 136 predicate places. [2024-06-27 18:43:22,543 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 214 transitions, 2587 flow [2024-06-27 18:43:22,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:22,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:22,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:22,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 18:43:22,544 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:22,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:22,544 INFO L85 PathProgramCache]: Analyzing trace with hash -399577520, now seen corresponding path program 5 times [2024-06-27 18:43:22,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:22,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674521303] [2024-06-27 18:43:22,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:22,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:22,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:23,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:23,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674521303] [2024-06-27 18:43:23,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674521303] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:23,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:23,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:23,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639073802] [2024-06-27 18:43:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:23,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:23,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:23,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:23,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:23,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:23,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 214 transitions, 2587 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:23,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:23,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:23,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:23,777 INFO L124 PetriNetUnfolderBase]: 1341/2382 cut-off events. [2024-06-27 18:43:23,777 INFO L125 PetriNetUnfolderBase]: For 48014/48014 co-relation queries the response was YES. [2024-06-27 18:43:23,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14241 conditions, 2382 events. 1341/2382 cut-off events. For 48014/48014 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13903 event pairs, 249 based on Foata normal form. 4/2306 useless extension candidates. Maximal degree in co-relation 14158. Up to 1887 conditions per place. [2024-06-27 18:43:23,797 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 217 selfloop transitions, 37 changer transitions 0/260 dead transitions. [2024-06-27 18:43:23,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 260 transitions, 3535 flow [2024-06-27 18:43:23,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2024-06-27 18:43:23,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-06-27 18:43:23,798 INFO L175 Difference]: Start difference. First operand has 176 places, 214 transitions, 2587 flow. Second operand 9 states and 156 transitions. [2024-06-27 18:43:23,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 260 transitions, 3535 flow [2024-06-27 18:43:23,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 260 transitions, 3472 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:23,889 INFO L231 Difference]: Finished difference. Result has 178 places, 221 transitions, 2801 flow [2024-06-27 18:43:23,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2801, PETRI_PLACES=178, PETRI_TRANSITIONS=221} [2024-06-27 18:43:23,890 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 138 predicate places. [2024-06-27 18:43:23,890 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 221 transitions, 2801 flow [2024-06-27 18:43:23,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:23,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:23,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:23,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 18:43:23,891 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:23,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:23,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1377846, now seen corresponding path program 6 times [2024-06-27 18:43:23,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:23,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588714865] [2024-06-27 18:43:23,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:23,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:24,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:24,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:24,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588714865] [2024-06-27 18:43:24,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588714865] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:24,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:24,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:24,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687198364] [2024-06-27 18:43:24,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:24,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:24,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:24,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:24,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:24,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:24,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 221 transitions, 2801 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:24,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:24,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:24,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:25,063 INFO L124 PetriNetUnfolderBase]: 1337/2376 cut-off events. [2024-06-27 18:43:25,063 INFO L125 PetriNetUnfolderBase]: For 48118/48118 co-relation queries the response was YES. [2024-06-27 18:43:25,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14446 conditions, 2376 events. 1337/2376 cut-off events. For 48118/48118 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13871 event pairs, 250 based on Foata normal form. 2/2298 useless extension candidates. Maximal degree in co-relation 14362. Up to 1886 conditions per place. [2024-06-27 18:43:25,081 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 217 selfloop transitions, 40 changer transitions 0/263 dead transitions. [2024-06-27 18:43:25,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 263 transitions, 3661 flow [2024-06-27 18:43:25,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:43:25,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 18:43:25,082 INFO L175 Difference]: Start difference. First operand has 178 places, 221 transitions, 2801 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:43:25,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 263 transitions, 3661 flow [2024-06-27 18:43:25,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 263 transitions, 3502 flow, removed 62 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:25,188 INFO L231 Difference]: Finished difference. Result has 182 places, 224 transitions, 2820 flow [2024-06-27 18:43:25,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2658, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2820, PETRI_PLACES=182, PETRI_TRANSITIONS=224} [2024-06-27 18:43:25,189 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 142 predicate places. [2024-06-27 18:43:25,189 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 224 transitions, 2820 flow [2024-06-27 18:43:25,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:25,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:25,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:25,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 18:43:25,189 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:25,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:25,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1585608, now seen corresponding path program 4 times [2024-06-27 18:43:25,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:25,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777453944] [2024-06-27 18:43:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:25,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:25,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:25,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777453944] [2024-06-27 18:43:25,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777453944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:25,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:25,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:25,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128737561] [2024-06-27 18:43:25,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:25,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:25,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:25,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:25,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:25,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:25,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 224 transitions, 2820 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:25,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:25,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:25,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:26,384 INFO L124 PetriNetUnfolderBase]: 1337/2310 cut-off events. [2024-06-27 18:43:26,384 INFO L125 PetriNetUnfolderBase]: For 45186/45186 co-relation queries the response was YES. [2024-06-27 18:43:26,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14195 conditions, 2310 events. 1337/2310 cut-off events. For 45186/45186 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13001 event pairs, 229 based on Foata normal form. 2/2251 useless extension candidates. Maximal degree in co-relation 14109. Up to 1894 conditions per place. [2024-06-27 18:43:26,402 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 187 selfloop transitions, 58 changer transitions 0/251 dead transitions. [2024-06-27 18:43:26,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 251 transitions, 3500 flow [2024-06-27 18:43:26,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:26,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 134 transitions. [2024-06-27 18:43:26,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4652777777777778 [2024-06-27 18:43:26,404 INFO L175 Difference]: Start difference. First operand has 182 places, 224 transitions, 2820 flow. Second operand 8 states and 134 transitions. [2024-06-27 18:43:26,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 251 transitions, 3500 flow [2024-06-27 18:43:26,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 251 transitions, 3372 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:26,516 INFO L231 Difference]: Finished difference. Result has 184 places, 226 transitions, 2893 flow [2024-06-27 18:43:26,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2893, PETRI_PLACES=184, PETRI_TRANSITIONS=226} [2024-06-27 18:43:26,516 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 144 predicate places. [2024-06-27 18:43:26,517 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 226 transitions, 2893 flow [2024-06-27 18:43:26,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:26,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:26,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:26,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 18:43:26,517 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:26,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:26,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1579656, now seen corresponding path program 7 times [2024-06-27 18:43:26,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:26,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943255361] [2024-06-27 18:43:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:26,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:27,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:27,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943255361] [2024-06-27 18:43:27,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943255361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:27,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:27,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:27,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571260767] [2024-06-27 18:43:27,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:27,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:27,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:27,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:27,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:27,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:27,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 226 transitions, 2893 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:27,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:27,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:27,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:27,898 INFO L124 PetriNetUnfolderBase]: 1465/2557 cut-off events. [2024-06-27 18:43:27,898 INFO L125 PetriNetUnfolderBase]: For 58536/58536 co-relation queries the response was YES. [2024-06-27 18:43:27,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16097 conditions, 2557 events. 1465/2557 cut-off events. For 58536/58536 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 14790 event pairs, 264 based on Foata normal form. 2/2482 useless extension candidates. Maximal degree in co-relation 16010. Up to 899 conditions per place. [2024-06-27 18:43:27,920 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 188 selfloop transitions, 93 changer transitions 0/287 dead transitions. [2024-06-27 18:43:27,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 287 transitions, 4373 flow [2024-06-27 18:43:27,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 171 transitions. [2024-06-27 18:43:27,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-06-27 18:43:27,922 INFO L175 Difference]: Start difference. First operand has 184 places, 226 transitions, 2893 flow. Second operand 9 states and 171 transitions. [2024-06-27 18:43:27,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 287 transitions, 4373 flow [2024-06-27 18:43:28,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 287 transitions, 4188 flow, removed 36 selfloop flow, removed 6 redundant places. [2024-06-27 18:43:28,058 INFO L231 Difference]: Finished difference. Result has 190 places, 238 transitions, 3289 flow [2024-06-27 18:43:28,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2708, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3289, PETRI_PLACES=190, PETRI_TRANSITIONS=238} [2024-06-27 18:43:28,059 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 150 predicate places. [2024-06-27 18:43:28,059 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 238 transitions, 3289 flow [2024-06-27 18:43:28,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:28,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:28,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:28,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 18:43:28,060 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:28,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:28,060 INFO L85 PathProgramCache]: Analyzing trace with hash 255130104, now seen corresponding path program 8 times [2024-06-27 18:43:28,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:28,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195266151] [2024-06-27 18:43:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:28,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195266151] [2024-06-27 18:43:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195266151] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:28,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:28,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020454357] [2024-06-27 18:43:28,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:28,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:28,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:28,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 238 transitions, 3289 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:28,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:28,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:28,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:29,305 INFO L124 PetriNetUnfolderBase]: 1627/2786 cut-off events. [2024-06-27 18:43:29,305 INFO L125 PetriNetUnfolderBase]: For 78989/78989 co-relation queries the response was YES. [2024-06-27 18:43:29,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19900 conditions, 2786 events. 1627/2786 cut-off events. For 78989/78989 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16240 event pairs, 265 based on Foata normal form. 4/2723 useless extension candidates. Maximal degree in co-relation 19809. Up to 1799 conditions per place. [2024-06-27 18:43:29,326 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 217 selfloop transitions, 74 changer transitions 0/297 dead transitions. [2024-06-27 18:43:29,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 297 transitions, 4780 flow [2024-06-27 18:43:29,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:29,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:29,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 165 transitions. [2024-06-27 18:43:29,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-06-27 18:43:29,327 INFO L175 Difference]: Start difference. First operand has 190 places, 238 transitions, 3289 flow. Second operand 9 states and 165 transitions. [2024-06-27 18:43:29,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 297 transitions, 4780 flow [2024-06-27 18:43:29,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 297 transitions, 4634 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:29,511 INFO L231 Difference]: Finished difference. Result has 196 places, 251 transitions, 3729 flow [2024-06-27 18:43:29,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3729, PETRI_PLACES=196, PETRI_TRANSITIONS=251} [2024-06-27 18:43:29,511 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 156 predicate places. [2024-06-27 18:43:29,512 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 251 transitions, 3729 flow [2024-06-27 18:43:29,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:29,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:29,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:29,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 18:43:29,512 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:29,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:29,512 INFO L85 PathProgramCache]: Analyzing trace with hash 255122664, now seen corresponding path program 9 times [2024-06-27 18:43:29,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:29,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089257089] [2024-06-27 18:43:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:29,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:30,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:30,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:30,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089257089] [2024-06-27 18:43:30,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089257089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:30,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:30,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:30,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666260209] [2024-06-27 18:43:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:30,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:30,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:30,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:30,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:30,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:30,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 251 transitions, 3729 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:30,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:30,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:30,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:30,745 INFO L124 PetriNetUnfolderBase]: 1623/2777 cut-off events. [2024-06-27 18:43:30,745 INFO L125 PetriNetUnfolderBase]: For 78284/78284 co-relation queries the response was YES. [2024-06-27 18:43:30,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20067 conditions, 2777 events. 1623/2777 cut-off events. For 78284/78284 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 16125 event pairs, 256 based on Foata normal form. 2/2713 useless extension candidates. Maximal degree in co-relation 19974. Up to 1798 conditions per place. [2024-06-27 18:43:30,769 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 213 selfloop transitions, 79 changer transitions 0/298 dead transitions. [2024-06-27 18:43:30,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 298 transitions, 4913 flow [2024-06-27 18:43:30,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:30,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-06-27 18:43:30,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-06-27 18:43:30,770 INFO L175 Difference]: Start difference. First operand has 196 places, 251 transitions, 3729 flow. Second operand 9 states and 164 transitions. [2024-06-27 18:43:30,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 298 transitions, 4913 flow [2024-06-27 18:43:30,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 298 transitions, 4668 flow, removed 92 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:30,956 INFO L231 Difference]: Finished difference. Result has 201 places, 255 transitions, 3798 flow [2024-06-27 18:43:30,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3798, PETRI_PLACES=201, PETRI_TRANSITIONS=255} [2024-06-27 18:43:30,957 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 161 predicate places. [2024-06-27 18:43:30,957 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 255 transitions, 3798 flow [2024-06-27 18:43:30,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:30,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:30,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:30,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 18:43:30,958 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:30,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:30,958 INFO L85 PathProgramCache]: Analyzing trace with hash 264326874, now seen corresponding path program 10 times [2024-06-27 18:43:30,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:30,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70606983] [2024-06-27 18:43:30,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:30,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:31,522 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 18:43:31,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:31,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70606983] [2024-06-27 18:43:31,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70606983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:31,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:31,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:31,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80249955] [2024-06-27 18:43:31,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:31,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:31,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:31,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:31,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:31,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 255 transitions, 3798 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:31,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:31,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:31,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:32,285 INFO L124 PetriNetUnfolderBase]: 1615/2797 cut-off events. [2024-06-27 18:43:32,285 INFO L125 PetriNetUnfolderBase]: For 71429/71429 co-relation queries the response was YES. [2024-06-27 18:43:32,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19640 conditions, 2797 events. 1615/2797 cut-off events. For 71429/71429 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16431 event pairs, 341 based on Foata normal form. 4/2725 useless extension candidates. Maximal degree in co-relation 19545. Up to 2399 conditions per place. [2024-06-27 18:43:32,312 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 260 selfloop transitions, 25 changer transitions 0/291 dead transitions. [2024-06-27 18:43:32,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 291 transitions, 4627 flow [2024-06-27 18:43:32,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:32,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 153 transitions. [2024-06-27 18:43:32,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:43:32,314 INFO L175 Difference]: Start difference. First operand has 201 places, 255 transitions, 3798 flow. Second operand 9 states and 153 transitions. [2024-06-27 18:43:32,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 291 transitions, 4627 flow [2024-06-27 18:43:32,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 291 transitions, 4418 flow, removed 74 selfloop flow, removed 4 redundant places. [2024-06-27 18:43:32,513 INFO L231 Difference]: Finished difference. Result has 206 places, 255 transitions, 3646 flow [2024-06-27 18:43:32,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3589, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3646, PETRI_PLACES=206, PETRI_TRANSITIONS=255} [2024-06-27 18:43:32,514 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 166 predicate places. [2024-06-27 18:43:32,514 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 255 transitions, 3646 flow [2024-06-27 18:43:32,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:32,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:32,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:32,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 18:43:32,515 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:32,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:32,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1269206592, now seen corresponding path program 1 times [2024-06-27 18:43:32,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:32,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804020299] [2024-06-27 18:43:32,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:32,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:32,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:32,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:32,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804020299] [2024-06-27 18:43:32,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804020299] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:32,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:32,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:43:32,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252764731] [2024-06-27 18:43:32,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:32,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:43:32,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:32,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:43:32,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:43:32,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 36 [2024-06-27 18:43:32,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 255 transitions, 3646 flow. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:32,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:32,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 36 [2024-06-27 18:43:32,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:33,178 INFO L124 PetriNetUnfolderBase]: 1370/2570 cut-off events. [2024-06-27 18:43:33,178 INFO L125 PetriNetUnfolderBase]: For 64218/64358 co-relation queries the response was YES. [2024-06-27 18:43:33,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17550 conditions, 2570 events. 1370/2570 cut-off events. For 64218/64358 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 16543 event pairs, 160 based on Foata normal form. 100/2566 useless extension candidates. Maximal degree in co-relation 17454. Up to 833 conditions per place. [2024-06-27 18:43:33,202 INFO L140 encePairwiseOnDemand]: 30/36 looper letters, 91 selfloop transitions, 18 changer transitions 107/320 dead transitions. [2024-06-27 18:43:33,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 320 transitions, 4716 flow [2024-06-27 18:43:33,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:43:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:43:33,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 170 transitions. [2024-06-27 18:43:33,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2024-06-27 18:43:33,204 INFO L175 Difference]: Start difference. First operand has 206 places, 255 transitions, 3646 flow. Second operand 8 states and 170 transitions. [2024-06-27 18:43:33,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 320 transitions, 4716 flow [2024-06-27 18:43:33,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 320 transitions, 4634 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:33,400 INFO L231 Difference]: Finished difference. Result has 210 places, 203 transitions, 3006 flow [2024-06-27 18:43:33,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3574, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3006, PETRI_PLACES=210, PETRI_TRANSITIONS=203} [2024-06-27 18:43:33,400 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 170 predicate places. [2024-06-27 18:43:33,400 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 203 transitions, 3006 flow [2024-06-27 18:43:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:33,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:33,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:33,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 18:43:33,403 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:33,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:33,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1868311215, now seen corresponding path program 1 times [2024-06-27 18:43:33,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:33,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212515124] [2024-06-27 18:43:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:33,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:34,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:34,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212515124] [2024-06-27 18:43:34,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212515124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:34,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:34,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901854430] [2024-06-27 18:43:34,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:34,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:34,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:34,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:34,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:34,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 203 transitions, 3006 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:34,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:34,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:34,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:34,816 INFO L124 PetriNetUnfolderBase]: 1324/2245 cut-off events. [2024-06-27 18:43:34,816 INFO L125 PetriNetUnfolderBase]: For 65098/65098 co-relation queries the response was YES. [2024-06-27 18:43:34,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16782 conditions, 2245 events. 1324/2245 cut-off events. For 65098/65098 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12106 event pairs, 252 based on Foata normal form. 2/2246 useless extension candidates. Maximal degree in co-relation 16681. Up to 1926 conditions per place. [2024-06-27 18:43:34,836 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 199 selfloop transitions, 33 changer transitions 0/238 dead transitions. [2024-06-27 18:43:34,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 238 transitions, 3689 flow [2024-06-27 18:43:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:34,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 18:43:34,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:43:34,837 INFO L175 Difference]: Start difference. First operand has 210 places, 203 transitions, 3006 flow. Second operand 9 states and 144 transitions. [2024-06-27 18:43:34,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 238 transitions, 3689 flow [2024-06-27 18:43:34,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 238 transitions, 3416 flow, removed 10 selfloop flow, removed 24 redundant places. [2024-06-27 18:43:34,984 INFO L231 Difference]: Finished difference. Result has 193 places, 207 transitions, 2937 flow [2024-06-27 18:43:34,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2739, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2937, PETRI_PLACES=193, PETRI_TRANSITIONS=207} [2024-06-27 18:43:34,985 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 153 predicate places. [2024-06-27 18:43:34,985 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 207 transitions, 2937 flow [2024-06-27 18:43:34,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:34,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:34,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:34,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 18:43:34,986 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:34,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1707484027, now seen corresponding path program 2 times [2024-06-27 18:43:34,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:34,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776373947] [2024-06-27 18:43:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:34,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:35,676 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 18:43:35,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:35,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776373947] [2024-06-27 18:43:35,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776373947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:35,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:35,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:35,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327229759] [2024-06-27 18:43:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:35,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:35,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:35,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:35,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:35,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:35,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 207 transitions, 2937 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:35,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:35,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:35,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:36,390 INFO L124 PetriNetUnfolderBase]: 1339/2270 cut-off events. [2024-06-27 18:43:36,390 INFO L125 PetriNetUnfolderBase]: For 63634/63634 co-relation queries the response was YES. [2024-06-27 18:43:36,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16221 conditions, 2270 events. 1339/2270 cut-off events. For 63634/63634 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12290 event pairs, 282 based on Foata normal form. 2/2228 useless extension candidates. Maximal degree in co-relation 16129. Up to 1929 conditions per place. [2024-06-27 18:43:36,408 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 200 selfloop transitions, 35 changer transitions 0/241 dead transitions. [2024-06-27 18:43:36,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 241 transitions, 3605 flow [2024-06-27 18:43:36,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 18:43:36,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-27 18:43:36,409 INFO L175 Difference]: Start difference. First operand has 193 places, 207 transitions, 2937 flow. Second operand 9 states and 145 transitions. [2024-06-27 18:43:36,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 241 transitions, 3605 flow [2024-06-27 18:43:36,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 241 transitions, 3416 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:36,548 INFO L231 Difference]: Finished difference. Result has 195 places, 209 transitions, 2905 flow [2024-06-27 18:43:36,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2748, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2905, PETRI_PLACES=195, PETRI_TRANSITIONS=209} [2024-06-27 18:43:36,548 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 155 predicate places. [2024-06-27 18:43:36,548 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 209 transitions, 2905 flow [2024-06-27 18:43:36,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:36,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:36,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 18:43:36,549 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:36,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:36,549 INFO L85 PathProgramCache]: Analyzing trace with hash -1866450699, now seen corresponding path program 1 times [2024-06-27 18:43:36,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:36,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040061972] [2024-06-27 18:43:36,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:37,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:37,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:37,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040061972] [2024-06-27 18:43:37,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040061972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:37,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:37,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:37,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296436912] [2024-06-27 18:43:37,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:37,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:37,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:37,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:37,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:37,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:37,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 209 transitions, 2905 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:37,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:37,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:37,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:38,084 INFO L124 PetriNetUnfolderBase]: 1341/2273 cut-off events. [2024-06-27 18:43:38,085 INFO L125 PetriNetUnfolderBase]: For 65155/65155 co-relation queries the response was YES. [2024-06-27 18:43:38,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16146 conditions, 2273 events. 1341/2273 cut-off events. For 65155/65155 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12279 event pairs, 279 based on Foata normal form. 1/2230 useless extension candidates. Maximal degree in co-relation 16054. Up to 1905 conditions per place. [2024-06-27 18:43:38,107 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 197 selfloop transitions, 43 changer transitions 0/246 dead transitions. [2024-06-27 18:43:38,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 246 transitions, 3627 flow [2024-06-27 18:43:38,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:38,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:38,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-06-27 18:43:38,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567901234567901 [2024-06-27 18:43:38,108 INFO L175 Difference]: Start difference. First operand has 195 places, 209 transitions, 2905 flow. Second operand 9 states and 148 transitions. [2024-06-27 18:43:38,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 246 transitions, 3627 flow [2024-06-27 18:43:38,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 246 transitions, 3486 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:38,266 INFO L231 Difference]: Finished difference. Result has 197 places, 214 transitions, 2987 flow [2024-06-27 18:43:38,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2987, PETRI_PLACES=197, PETRI_TRANSITIONS=214} [2024-06-27 18:43:38,267 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 157 predicate places. [2024-06-27 18:43:38,267 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 214 transitions, 2987 flow [2024-06-27 18:43:38,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:38,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:38,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:38,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 18:43:38,268 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:38,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:38,268 INFO L85 PathProgramCache]: Analyzing trace with hash 515131773, now seen corresponding path program 3 times [2024-06-27 18:43:38,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:38,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522129108] [2024-06-27 18:43:38,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:39,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:39,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522129108] [2024-06-27 18:43:39,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522129108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:39,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:39,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:39,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543137319] [2024-06-27 18:43:39,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:39,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:39,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:39,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:39,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:39,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:39,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 214 transitions, 2987 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:39,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:39,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:39,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:39,953 INFO L124 PetriNetUnfolderBase]: 1359/2303 cut-off events. [2024-06-27 18:43:39,954 INFO L125 PetriNetUnfolderBase]: For 69216/69216 co-relation queries the response was YES. [2024-06-27 18:43:39,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16494 conditions, 2303 events. 1359/2303 cut-off events. For 69216/69216 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12515 event pairs, 282 based on Foata normal form. 2/2261 useless extension candidates. Maximal degree in co-relation 16401. Up to 1953 conditions per place. [2024-06-27 18:43:39,973 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 204 selfloop transitions, 43 changer transitions 0/253 dead transitions. [2024-06-27 18:43:39,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 253 transitions, 3760 flow [2024-06-27 18:43:39,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:39,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 149 transitions. [2024-06-27 18:43:39,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45987654320987653 [2024-06-27 18:43:39,974 INFO L175 Difference]: Start difference. First operand has 197 places, 214 transitions, 2987 flow. Second operand 9 states and 149 transitions. [2024-06-27 18:43:39,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 253 transitions, 3760 flow [2024-06-27 18:43:40,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 253 transitions, 3578 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:40,139 INFO L231 Difference]: Finished difference. Result has 201 places, 221 transitions, 3088 flow [2024-06-27 18:43:40,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2814, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3088, PETRI_PLACES=201, PETRI_TRANSITIONS=221} [2024-06-27 18:43:40,140 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 161 predicate places. [2024-06-27 18:43:40,140 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 221 transitions, 3088 flow [2024-06-27 18:43:40,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:40,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:40,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:40,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 18:43:40,140 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:40,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:40,141 INFO L85 PathProgramCache]: Analyzing trace with hash -173634973, now seen corresponding path program 4 times [2024-06-27 18:43:40,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:40,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204613537] [2024-06-27 18:43:40,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:40,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:40,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:40,934 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 18:43:40,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:40,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204613537] [2024-06-27 18:43:40,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204613537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:40,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:40,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:40,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313952721] [2024-06-27 18:43:40,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:40,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:40,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:40,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:40,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:41,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:41,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 221 transitions, 3088 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:41,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:41,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:41,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:41,619 INFO L124 PetriNetUnfolderBase]: 1374/2328 cut-off events. [2024-06-27 18:43:41,619 INFO L125 PetriNetUnfolderBase]: For 72891/72891 co-relation queries the response was YES. [2024-06-27 18:43:41,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16683 conditions, 2328 events. 1374/2328 cut-off events. For 72891/72891 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 12675 event pairs, 276 based on Foata normal form. 2/2285 useless extension candidates. Maximal degree in co-relation 16587. Up to 1964 conditions per place. [2024-06-27 18:43:41,638 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 208 selfloop transitions, 40 changer transitions 0/254 dead transitions. [2024-06-27 18:43:41,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 254 transitions, 3798 flow [2024-06-27 18:43:41,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:41,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 147 transitions. [2024-06-27 18:43:41,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537037037037037 [2024-06-27 18:43:41,640 INFO L175 Difference]: Start difference. First operand has 201 places, 221 transitions, 3088 flow. Second operand 9 states and 147 transitions. [2024-06-27 18:43:41,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 254 transitions, 3798 flow [2024-06-27 18:43:41,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 254 transitions, 3656 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 18:43:41,781 INFO L231 Difference]: Finished difference. Result has 205 places, 223 transitions, 3123 flow [2024-06-27 18:43:41,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2946, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3123, PETRI_PLACES=205, PETRI_TRANSITIONS=223} [2024-06-27 18:43:41,782 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 165 predicate places. [2024-06-27 18:43:41,782 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 223 transitions, 3123 flow [2024-06-27 18:43:41,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:41,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:41,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:41,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 18:43:41,783 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:41,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:41,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1018717281, now seen corresponding path program 5 times [2024-06-27 18:43:41,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:41,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562090703] [2024-06-27 18:43:41,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:41,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:42,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:42,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:42,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562090703] [2024-06-27 18:43:42,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562090703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:42,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:42,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:42,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78230072] [2024-06-27 18:43:42,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:42,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:42,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:42,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:42,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:42,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:42,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 223 transitions, 3123 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:42,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:42,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:42,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:43,206 INFO L124 PetriNetUnfolderBase]: 1389/2353 cut-off events. [2024-06-27 18:43:43,207 INFO L125 PetriNetUnfolderBase]: For 76390/76390 co-relation queries the response was YES. [2024-06-27 18:43:43,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16942 conditions, 2353 events. 1389/2353 cut-off events. For 76390/76390 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 12862 event pairs, 275 based on Foata normal form. 2/2310 useless extension candidates. Maximal degree in co-relation 16845. Up to 1989 conditions per place. [2024-06-27 18:43:43,227 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 212 selfloop transitions, 38 changer transitions 0/256 dead transitions. [2024-06-27 18:43:43,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 256 transitions, 3839 flow [2024-06-27 18:43:43,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:43,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:43,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 145 transitions. [2024-06-27 18:43:43,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44753086419753085 [2024-06-27 18:43:43,228 INFO L175 Difference]: Start difference. First operand has 205 places, 223 transitions, 3123 flow. Second operand 9 states and 145 transitions. [2024-06-27 18:43:43,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 256 transitions, 3839 flow [2024-06-27 18:43:43,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 256 transitions, 3678 flow, removed 42 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:43,382 INFO L231 Difference]: Finished difference. Result has 207 places, 225 transitions, 3139 flow [2024-06-27 18:43:43,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3139, PETRI_PLACES=207, PETRI_TRANSITIONS=225} [2024-06-27 18:43:43,382 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 167 predicate places. [2024-06-27 18:43:43,382 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 225 transitions, 3139 flow [2024-06-27 18:43:43,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:43,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:43,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:43,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 18:43:43,383 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:43,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:43,383 INFO L85 PathProgramCache]: Analyzing trace with hash -49614835, now seen corresponding path program 1 times [2024-06-27 18:43:43,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:43,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290484319] [2024-06-27 18:43:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:43,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:43,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:44,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:44,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:44,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290484319] [2024-06-27 18:43:44,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290484319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:44,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:44,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:44,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086115566] [2024-06-27 18:43:44,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:44,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:44,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:44,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 225 transitions, 3139 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:44,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:44,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:44,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:44,737 INFO L124 PetriNetUnfolderBase]: 1399/2368 cut-off events. [2024-06-27 18:43:44,737 INFO L125 PetriNetUnfolderBase]: For 78437/78437 co-relation queries the response was YES. [2024-06-27 18:43:44,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17067 conditions, 2368 events. 1399/2368 cut-off events. For 78437/78437 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12941 event pairs, 280 based on Foata normal form. 2/2325 useless extension candidates. Maximal degree in co-relation 16969. Up to 1976 conditions per place. [2024-06-27 18:43:44,756 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 214 selfloop transitions, 44 changer transitions 0/264 dead transitions. [2024-06-27 18:43:44,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 264 transitions, 3927 flow [2024-06-27 18:43:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:44,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:43:44,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:43:44,763 INFO L175 Difference]: Start difference. First operand has 207 places, 225 transitions, 3139 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:43:44,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 264 transitions, 3927 flow [2024-06-27 18:43:44,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 264 transitions, 3766 flow, removed 44 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:44,966 INFO L231 Difference]: Finished difference. Result has 210 places, 228 transitions, 3198 flow [2024-06-27 18:43:44,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2978, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3198, PETRI_PLACES=210, PETRI_TRANSITIONS=228} [2024-06-27 18:43:44,967 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 170 predicate places. [2024-06-27 18:43:44,967 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 228 transitions, 3198 flow [2024-06-27 18:43:44,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:44,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:44,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:44,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 18:43:44,968 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:44,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:44,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1829541909, now seen corresponding path program 1 times [2024-06-27 18:43:44,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:44,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027878359] [2024-06-27 18:43:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:44,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027878359] [2024-06-27 18:43:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027878359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:45,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:45,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:45,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80698698] [2024-06-27 18:43:45,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:45,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:45,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:45,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:45,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 228 transitions, 3198 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:45,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:45,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:45,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:46,645 INFO L124 PetriNetUnfolderBase]: 1414/2393 cut-off events. [2024-06-27 18:43:46,645 INFO L125 PetriNetUnfolderBase]: For 81352/81352 co-relation queries the response was YES. [2024-06-27 18:43:46,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17276 conditions, 2393 events. 1414/2393 cut-off events. For 81352/81352 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 13098 event pairs, 312 based on Foata normal form. 2/2351 useless extension candidates. Maximal degree in co-relation 17177. Up to 2173 conditions per place. [2024-06-27 18:43:46,675 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 232 selfloop transitions, 21 changer transitions 0/259 dead transitions. [2024-06-27 18:43:46,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 259 transitions, 3932 flow [2024-06-27 18:43:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:46,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:46,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 18:43:46,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-27 18:43:46,677 INFO L175 Difference]: Start difference. First operand has 210 places, 228 transitions, 3198 flow. Second operand 9 states and 143 transitions. [2024-06-27 18:43:46,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 259 transitions, 3932 flow [2024-06-27 18:43:46,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 259 transitions, 3740 flow, removed 54 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:46,885 INFO L231 Difference]: Finished difference. Result has 211 places, 230 transitions, 3151 flow [2024-06-27 18:43:46,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3006, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3151, PETRI_PLACES=211, PETRI_TRANSITIONS=230} [2024-06-27 18:43:46,885 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 171 predicate places. [2024-06-27 18:43:46,885 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 230 transitions, 3151 flow [2024-06-27 18:43:46,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:46,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:46,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:46,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 18:43:46,886 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:46,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:46,886 INFO L85 PathProgramCache]: Analyzing trace with hash -43365669, now seen corresponding path program 6 times [2024-06-27 18:43:46,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176956861] [2024-06-27 18:43:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:47,654 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 18:43:47,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:47,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176956861] [2024-06-27 18:43:47,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176956861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:47,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:47,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:47,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118377352] [2024-06-27 18:43:47,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:47,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:47,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:47,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:47,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 230 transitions, 3151 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:47,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:47,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:47,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:48,384 INFO L124 PetriNetUnfolderBase]: 1429/2418 cut-off events. [2024-06-27 18:43:48,384 INFO L125 PetriNetUnfolderBase]: For 83738/83738 co-relation queries the response was YES. [2024-06-27 18:43:48,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17336 conditions, 2418 events. 1429/2418 cut-off events. For 83738/83738 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 13284 event pairs, 310 based on Foata normal form. 2/2376 useless extension candidates. Maximal degree in co-relation 17236. Up to 2198 conditions per place. [2024-06-27 18:43:48,407 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 234 selfloop transitions, 21 changer transitions 0/261 dead transitions. [2024-06-27 18:43:48,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 261 transitions, 3881 flow [2024-06-27 18:43:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:48,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:48,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 143 transitions. [2024-06-27 18:43:48,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44135802469135804 [2024-06-27 18:43:48,408 INFO L175 Difference]: Start difference. First operand has 211 places, 230 transitions, 3151 flow. Second operand 9 states and 143 transitions. [2024-06-27 18:43:48,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 261 transitions, 3881 flow [2024-06-27 18:43:48,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 261 transitions, 3752 flow, removed 45 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:48,586 INFO L231 Difference]: Finished difference. Result has 213 places, 232 transitions, 3173 flow [2024-06-27 18:43:48,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3022, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3173, PETRI_PLACES=213, PETRI_TRANSITIONS=232} [2024-06-27 18:43:48,587 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 173 predicate places. [2024-06-27 18:43:48,587 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 232 transitions, 3173 flow [2024-06-27 18:43:48,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:48,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:48,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:48,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 18:43:48,588 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:48,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash 528326721, now seen corresponding path program 2 times [2024-06-27 18:43:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:48,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228613006] [2024-06-27 18:43:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:49,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:49,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228613006] [2024-06-27 18:43:49,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228613006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:49,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:49,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489660605] [2024-06-27 18:43:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:49,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:49,337 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:49,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 232 transitions, 3173 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:49,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:49,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:49,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:49,928 INFO L124 PetriNetUnfolderBase]: 1449/2448 cut-off events. [2024-06-27 18:43:49,928 INFO L125 PetriNetUnfolderBase]: For 86396/86396 co-relation queries the response was YES. [2024-06-27 18:43:49,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17569 conditions, 2448 events. 1449/2448 cut-off events. For 86396/86396 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13494 event pairs, 295 based on Foata normal form. 2/2406 useless extension candidates. Maximal degree in co-relation 17468. Up to 2120 conditions per place. [2024-06-27 18:43:49,949 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 233 selfloop transitions, 33 changer transitions 0/272 dead transitions. [2024-06-27 18:43:49,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 272 transitions, 4068 flow [2024-06-27 18:43:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:43:49,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-27 18:43:49,950 INFO L175 Difference]: Start difference. First operand has 213 places, 232 transitions, 3173 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:43:49,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 272 transitions, 4068 flow [2024-06-27 18:43:50,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 272 transitions, 3933 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:50,104 INFO L231 Difference]: Finished difference. Result has 216 places, 235 transitions, 3203 flow [2024-06-27 18:43:50,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3038, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3203, PETRI_PLACES=216, PETRI_TRANSITIONS=235} [2024-06-27 18:43:50,104 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 176 predicate places. [2024-06-27 18:43:50,104 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 235 transitions, 3203 flow [2024-06-27 18:43:50,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:50,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:50,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:50,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 18:43:50,105 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:50,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:50,106 INFO L85 PathProgramCache]: Analyzing trace with hash 528096081, now seen corresponding path program 3 times [2024-06-27 18:43:50,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:50,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981631390] [2024-06-27 18:43:50,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:50,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:50,759 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 18:43:50,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:50,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981631390] [2024-06-27 18:43:50,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981631390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:50,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:50,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:50,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712023119] [2024-06-27 18:43:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:50,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:50,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:50,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:50,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:50,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:50,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 235 transitions, 3203 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:50,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:50,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:50,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:51,396 INFO L124 PetriNetUnfolderBase]: 1445/2442 cut-off events. [2024-06-27 18:43:51,396 INFO L125 PetriNetUnfolderBase]: For 83419/83419 co-relation queries the response was YES. [2024-06-27 18:43:51,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17355 conditions, 2442 events. 1445/2442 cut-off events. For 83419/83419 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 13452 event pairs, 295 based on Foata normal form. 2/2400 useless extension candidates. Maximal degree in co-relation 17253. Up to 2117 conditions per place. [2024-06-27 18:43:51,416 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 231 selfloop transitions, 34 changer transitions 0/271 dead transitions. [2024-06-27 18:43:51,417 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 271 transitions, 3901 flow [2024-06-27 18:43:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:43:51,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:43:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:43:51,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-27 18:43:51,418 INFO L175 Difference]: Start difference. First operand has 216 places, 235 transitions, 3203 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:43:51,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 271 transitions, 3901 flow [2024-06-27 18:43:51,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 271 transitions, 3715 flow, removed 60 selfloop flow, removed 8 redundant places. [2024-06-27 18:43:51,607 INFO L231 Difference]: Finished difference. Result has 218 places, 235 transitions, 3091 flow [2024-06-27 18:43:51,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3091, PETRI_PLACES=218, PETRI_TRANSITIONS=235} [2024-06-27 18:43:51,608 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 178 predicate places. [2024-06-27 18:43:51,608 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 235 transitions, 3091 flow [2024-06-27 18:43:51,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:51,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:51,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:51,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 18:43:51,608 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:51,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:51,609 INFO L85 PathProgramCache]: Analyzing trace with hash -49148253, now seen corresponding path program 7 times [2024-06-27 18:43:51,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:51,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192381246] [2024-06-27 18:43:51,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:51,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:52,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:52,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:52,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192381246] [2024-06-27 18:43:52,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192381246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:52,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:52,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:52,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087173815] [2024-06-27 18:43:52,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:52,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:52,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:52,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:52,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:52,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:52,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 235 transitions, 3091 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:52,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:52,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:52,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:53,160 INFO L124 PetriNetUnfolderBase]: 1460/2480 cut-off events. [2024-06-27 18:43:53,160 INFO L125 PetriNetUnfolderBase]: For 84565/84565 co-relation queries the response was YES. [2024-06-27 18:43:53,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17468 conditions, 2480 events. 1460/2480 cut-off events. For 84565/84565 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 13773 event pairs, 178 based on Foata normal form. 2/2429 useless extension candidates. Maximal degree in co-relation 17365. Up to 1848 conditions per place. [2024-06-27 18:43:53,184 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 208 selfloop transitions, 67 changer transitions 0/281 dead transitions. [2024-06-27 18:43:53,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 281 transitions, 4299 flow [2024-06-27 18:43:53,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:53,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 157 transitions. [2024-06-27 18:43:53,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4845679012345679 [2024-06-27 18:43:53,185 INFO L175 Difference]: Start difference. First operand has 218 places, 235 transitions, 3091 flow. Second operand 9 states and 157 transitions. [2024-06-27 18:43:53,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 281 transitions, 4299 flow [2024-06-27 18:43:53,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 281 transitions, 4199 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 18:43:53,376 INFO L231 Difference]: Finished difference. Result has 220 places, 244 transitions, 3496 flow [2024-06-27 18:43:53,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3496, PETRI_PLACES=220, PETRI_TRANSITIONS=244} [2024-06-27 18:43:53,377 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 180 predicate places. [2024-06-27 18:43:53,377 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 244 transitions, 3496 flow [2024-06-27 18:43:53,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:53,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:53,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:53,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 18:43:53,378 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:53,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:53,378 INFO L85 PathProgramCache]: Analyzing trace with hash 491328451, now seen corresponding path program 8 times [2024-06-27 18:43:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:53,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267498050] [2024-06-27 18:43:53,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:53,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:54,306 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 18:43:54,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:54,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267498050] [2024-06-27 18:43:54,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267498050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:54,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:54,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:54,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14863570] [2024-06-27 18:43:54,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:54,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:54,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:54,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:54,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:54,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:54,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 244 transitions, 3496 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:54,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:54,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:54,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:55,006 INFO L124 PetriNetUnfolderBase]: 1475/2493 cut-off events. [2024-06-27 18:43:55,006 INFO L125 PetriNetUnfolderBase]: For 91277/91277 co-relation queries the response was YES. [2024-06-27 18:43:55,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18146 conditions, 2493 events. 1475/2493 cut-off events. For 91277/91277 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13918 event pairs, 190 based on Foata normal form. 2/2446 useless extension candidates. Maximal degree in co-relation 18039. Up to 2090 conditions per place. [2024-06-27 18:43:55,031 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 226 selfloop transitions, 44 changer transitions 0/276 dead transitions. [2024-06-27 18:43:55,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 276 transitions, 4274 flow [2024-06-27 18:43:55,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:55,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 144 transitions. [2024-06-27 18:43:55,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:43:55,032 INFO L175 Difference]: Start difference. First operand has 220 places, 244 transitions, 3496 flow. Second operand 9 states and 144 transitions. [2024-06-27 18:43:55,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 276 transitions, 4274 flow [2024-06-27 18:43:55,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 276 transitions, 4126 flow, removed 62 selfloop flow, removed 3 redundant places. [2024-06-27 18:43:55,293 INFO L231 Difference]: Finished difference. Result has 226 places, 246 transitions, 3553 flow [2024-06-27 18:43:55,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3348, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3553, PETRI_PLACES=226, PETRI_TRANSITIONS=246} [2024-06-27 18:43:55,293 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 186 predicate places. [2024-06-27 18:43:55,294 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 246 transitions, 3553 flow [2024-06-27 18:43:55,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:55,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:55,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:55,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 18:43:55,294 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:55,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:55,294 INFO L85 PathProgramCache]: Analyzing trace with hash -395503511, now seen corresponding path program 2 times [2024-06-27 18:43:55,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:55,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775994891] [2024-06-27 18:43:55,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:55,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:56,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:56,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775994891] [2024-06-27 18:43:56,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775994891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:56,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:56,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:43:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564691360] [2024-06-27 18:43:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:56,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 18:43:56,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:56,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 18:43:56,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 18:43:56,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:56,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 246 transitions, 3553 flow. Second operand has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 18:43:56,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:56,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:56,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:56,727 INFO L124 PetriNetUnfolderBase]: 1490/2517 cut-off events. [2024-06-27 18:43:56,727 INFO L125 PetriNetUnfolderBase]: For 94148/94148 co-relation queries the response was YES. [2024-06-27 18:43:56,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18412 conditions, 2517 events. 1490/2517 cut-off events. For 94148/94148 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14009 event pairs, 282 based on Foata normal form. 2/2474 useless extension candidates. Maximal degree in co-relation 18303. Up to 2295 conditions per place. [2024-06-27 18:43:56,748 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 252 selfloop transitions, 18 changer transitions 0/276 dead transitions. [2024-06-27 18:43:56,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 276 transitions, 4349 flow [2024-06-27 18:43:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:43:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:43:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-27 18:43:56,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-06-27 18:43:56,749 INFO L175 Difference]: Start difference. First operand has 226 places, 246 transitions, 3553 flow. Second operand 9 states and 142 transitions. [2024-06-27 18:43:56,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 276 transitions, 4349 flow [2024-06-27 18:43:57,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 276 transitions, 4156 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:57,016 INFO L231 Difference]: Finished difference. Result has 228 places, 248 transitions, 3509 flow [2024-06-27 18:43:57,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3360, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3509, PETRI_PLACES=228, PETRI_TRANSITIONS=248} [2024-06-27 18:43:57,016 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 188 predicate places. [2024-06-27 18:43:57,016 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 248 transitions, 3509 flow [2024-06-27 18:43:57,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.4) internal successors, (94), 10 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 18:43:57,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:57,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:57,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 18:43:57,017 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:57,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:57,020 INFO L85 PathProgramCache]: Analyzing trace with hash 155165063, now seen corresponding path program 3 times [2024-06-27 18:43:57,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:57,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672087396] [2024-06-27 18:43:57,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:57,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:57,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:57,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672087396] [2024-06-27 18:43:57,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672087396] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:57,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:57,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:57,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118231191] [2024-06-27 18:43:57,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:57,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:57,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:57,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:57,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:58,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:58,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 248 transitions, 3509 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:58,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:58,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:58,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:43:58,687 INFO L124 PetriNetUnfolderBase]: 1505/2542 cut-off events. [2024-06-27 18:43:58,687 INFO L125 PetriNetUnfolderBase]: For 96448/96448 co-relation queries the response was YES. [2024-06-27 18:43:58,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18448 conditions, 2542 events. 1505/2542 cut-off events. For 96448/96448 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14210 event pairs, 278 based on Foata normal form. 2/2499 useless extension candidates. Maximal degree in co-relation 18338. Up to 2279 conditions per place. [2024-06-27 18:43:58,711 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 258 selfloop transitions, 27 changer transitions 0/291 dead transitions. [2024-06-27 18:43:58,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 291 transitions, 4430 flow [2024-06-27 18:43:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:43:58,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:43:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 172 transitions. [2024-06-27 18:43:58,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43434343434343436 [2024-06-27 18:43:58,713 INFO L175 Difference]: Start difference. First operand has 228 places, 248 transitions, 3509 flow. Second operand 11 states and 172 transitions. [2024-06-27 18:43:58,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 291 transitions, 4430 flow [2024-06-27 18:43:59,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 291 transitions, 4289 flow, removed 50 selfloop flow, removed 7 redundant places. [2024-06-27 18:43:59,006 INFO L231 Difference]: Finished difference. Result has 233 places, 256 transitions, 3632 flow [2024-06-27 18:43:59,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3376, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3632, PETRI_PLACES=233, PETRI_TRANSITIONS=256} [2024-06-27 18:43:59,006 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 193 predicate places. [2024-06-27 18:43:59,006 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 256 transitions, 3632 flow [2024-06-27 18:43:59,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:59,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:43:59,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:43:59,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 18:43:59,007 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:43:59,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:43:59,007 INFO L85 PathProgramCache]: Analyzing trace with hash 497762191, now seen corresponding path program 9 times [2024-06-27 18:43:59,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:43:59,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498682762] [2024-06-27 18:43:59,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:43:59,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:43:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:43:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:43:59,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:43:59,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498682762] [2024-06-27 18:43:59,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498682762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:43:59,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:43:59,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:43:59,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888554557] [2024-06-27 18:43:59,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:43:59,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:43:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:43:59,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:43:59,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:43:59,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:43:59,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 256 transitions, 3632 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:43:59,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:43:59,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:43:59,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:00,487 INFO L124 PetriNetUnfolderBase]: 1520/2568 cut-off events. [2024-06-27 18:44:00,487 INFO L125 PetriNetUnfolderBase]: For 100467/100467 co-relation queries the response was YES. [2024-06-27 18:44:00,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18757 conditions, 2568 events. 1520/2568 cut-off events. For 100467/100467 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 14451 event pairs, 243 based on Foata normal form. 2/2524 useless extension candidates. Maximal degree in co-relation 18645. Up to 2330 conditions per place. [2024-06-27 18:44:00,512 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 256 selfloop transitions, 24 changer transitions 0/286 dead transitions. [2024-06-27 18:44:00,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 286 transitions, 4434 flow [2024-06-27 18:44:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 142 transitions. [2024-06-27 18:44:00,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382716049382716 [2024-06-27 18:44:00,514 INFO L175 Difference]: Start difference. First operand has 233 places, 256 transitions, 3632 flow. Second operand 9 states and 142 transitions. [2024-06-27 18:44:00,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 286 transitions, 4434 flow [2024-06-27 18:44:00,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 286 transitions, 4279 flow, removed 68 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:00,812 INFO L231 Difference]: Finished difference. Result has 237 places, 258 transitions, 3650 flow [2024-06-27 18:44:00,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3650, PETRI_PLACES=237, PETRI_TRANSITIONS=258} [2024-06-27 18:44:00,812 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 197 predicate places. [2024-06-27 18:44:00,813 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 258 transitions, 3650 flow [2024-06-27 18:44:00,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:00,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:00,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:00,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 18:44:00,813 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:00,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash -42472899, now seen corresponding path program 4 times [2024-06-27 18:44:00,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:00,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84754616] [2024-06-27 18:44:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:00,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:02,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:02,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:02,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84754616] [2024-06-27 18:44:02,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84754616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:02,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:02,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:02,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749359397] [2024-06-27 18:44:02,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:02,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:02,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:02,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 258 transitions, 3650 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:02,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:02,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:02,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:02,863 INFO L124 PetriNetUnfolderBase]: 1535/2593 cut-off events. [2024-06-27 18:44:02,864 INFO L125 PetriNetUnfolderBase]: For 104172/104172 co-relation queries the response was YES. [2024-06-27 18:44:02,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18927 conditions, 2593 events. 1535/2593 cut-off events. For 104172/104172 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 14641 event pairs, 247 based on Foata normal form. 2/2549 useless extension candidates. Maximal degree in co-relation 18813. Up to 2355 conditions per place. [2024-06-27 18:44:02,889 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 261 selfloop transitions, 27 changer transitions 0/294 dead transitions. [2024-06-27 18:44:02,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 294 transitions, 4525 flow [2024-06-27 18:44:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:02,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:02,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 156 transitions. [2024-06-27 18:44:02,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43333333333333335 [2024-06-27 18:44:02,891 INFO L175 Difference]: Start difference. First operand has 237 places, 258 transitions, 3650 flow. Second operand 10 states and 156 transitions. [2024-06-27 18:44:02,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 294 transitions, 4525 flow [2024-06-27 18:44:03,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 294 transitions, 4368 flow, removed 56 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:03,189 INFO L231 Difference]: Finished difference. Result has 241 places, 263 transitions, 3719 flow [2024-06-27 18:44:03,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3493, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3719, PETRI_PLACES=241, PETRI_TRANSITIONS=263} [2024-06-27 18:44:03,189 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 201 predicate places. [2024-06-27 18:44:03,190 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 263 transitions, 3719 flow [2024-06-27 18:44:03,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:03,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:03,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:03,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 18:44:03,190 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:03,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:03,191 INFO L85 PathProgramCache]: Analyzing trace with hash 144680863, now seen corresponding path program 4 times [2024-06-27 18:44:03,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:03,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651181189] [2024-06-27 18:44:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:03,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:04,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:04,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651181189] [2024-06-27 18:44:04,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651181189] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:04,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:04,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:04,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849964388] [2024-06-27 18:44:04,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:04,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:04,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:04,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:04,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:04,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 263 transitions, 3719 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:04,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:04,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:04,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:04,847 INFO L124 PetriNetUnfolderBase]: 1531/2586 cut-off events. [2024-06-27 18:44:04,847 INFO L125 PetriNetUnfolderBase]: For 102089/102089 co-relation queries the response was YES. [2024-06-27 18:44:04,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18704 conditions, 2586 events. 1531/2586 cut-off events. For 102089/102089 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14523 event pairs, 274 based on Foata normal form. 2/2543 useless extension candidates. Maximal degree in co-relation 18588. Up to 2323 conditions per place. [2024-06-27 18:44:04,872 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 261 selfloop transitions, 27 changer transitions 0/294 dead transitions. [2024-06-27 18:44:04,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 294 transitions, 4437 flow [2024-06-27 18:44:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:04,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:44:04,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:44:04,873 INFO L175 Difference]: Start difference. First operand has 241 places, 263 transitions, 3719 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:44:04,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 294 transitions, 4437 flow [2024-06-27 18:44:05,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 294 transitions, 4194 flow, removed 97 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:05,163 INFO L231 Difference]: Finished difference. Result has 244 places, 263 transitions, 3536 flow [2024-06-27 18:44:05,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3476, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3536, PETRI_PLACES=244, PETRI_TRANSITIONS=263} [2024-06-27 18:44:05,163 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 204 predicate places. [2024-06-27 18:44:05,163 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 263 transitions, 3536 flow [2024-06-27 18:44:05,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:05,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:05,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:05,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 18:44:05,164 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:05,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:05,164 INFO L85 PathProgramCache]: Analyzing trace with hash -681137945, now seen corresponding path program 10 times [2024-06-27 18:44:05,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:05,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883940251] [2024-06-27 18:44:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:05,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:05,898 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 18:44:05,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:05,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883940251] [2024-06-27 18:44:05,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883940251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:05,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:05,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:05,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827060315] [2024-06-27 18:44:05,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:05,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:05,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:05,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:05,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:05,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:05,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 263 transitions, 3536 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:05,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:05,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:05,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:06,621 INFO L124 PetriNetUnfolderBase]: 1531/2587 cut-off events. [2024-06-27 18:44:06,621 INFO L125 PetriNetUnfolderBase]: For 98587/98587 co-relation queries the response was YES. [2024-06-27 18:44:06,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18362 conditions, 2587 events. 1531/2587 cut-off events. For 98587/98587 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14575 event pairs, 231 based on Foata normal form. 2/2543 useless extension candidates. Maximal degree in co-relation 18245. Up to 2286 conditions per place. [2024-06-27 18:44:06,649 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 252 selfloop transitions, 36 changer transitions 0/294 dead transitions. [2024-06-27 18:44:06,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 294 transitions, 4364 flow [2024-06-27 18:44:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 18:44:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 18:44:06,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 146 transitions. [2024-06-27 18:44:06,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2024-06-27 18:44:06,651 INFO L175 Difference]: Start difference. First operand has 244 places, 263 transitions, 3536 flow. Second operand 9 states and 146 transitions. [2024-06-27 18:44:06,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 294 transitions, 4364 flow [2024-06-27 18:44:06,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 294 transitions, 4299 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:06,976 INFO L231 Difference]: Finished difference. Result has 244 places, 265 transitions, 3674 flow [2024-06-27 18:44:06,976 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3471, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3674, PETRI_PLACES=244, PETRI_TRANSITIONS=265} [2024-06-27 18:44:06,976 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 204 predicate places. [2024-06-27 18:44:06,976 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 265 transitions, 3674 flow [2024-06-27 18:44:06,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:06,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:06,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:06,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 18:44:06,977 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:06,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:06,978 INFO L85 PathProgramCache]: Analyzing trace with hash -680891681, now seen corresponding path program 5 times [2024-06-27 18:44:06,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:06,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769371966] [2024-06-27 18:44:06,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:06,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:08,062 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 18:44:08,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:08,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769371966] [2024-06-27 18:44:08,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769371966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:08,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:08,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:08,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17352227] [2024-06-27 18:44:08,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:08,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:08,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:08,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:08,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:08,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:08,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 265 transitions, 3674 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:08,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:08,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:08,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:08,756 INFO L124 PetriNetUnfolderBase]: 1531/2587 cut-off events. [2024-06-27 18:44:08,756 INFO L125 PetriNetUnfolderBase]: For 100765/100765 co-relation queries the response was YES. [2024-06-27 18:44:08,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18420 conditions, 2587 events. 1531/2587 cut-off events. For 100765/100765 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 14570 event pairs, 243 based on Foata normal form. 2/2543 useless extension candidates. Maximal degree in co-relation 18302. Up to 2286 conditions per place. [2024-06-27 18:44:08,786 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 254 selfloop transitions, 44 changer transitions 0/304 dead transitions. [2024-06-27 18:44:08,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 304 transitions, 4614 flow [2024-06-27 18:44:08,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:08,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:08,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:44:08,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:44:08,788 INFO L175 Difference]: Start difference. First operand has 244 places, 265 transitions, 3674 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:44:08,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 304 transitions, 4614 flow [2024-06-27 18:44:09,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 304 transitions, 4427 flow, removed 59 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:09,098 INFO L231 Difference]: Finished difference. Result has 248 places, 273 transitions, 3810 flow [2024-06-27 18:44:09,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3810, PETRI_PLACES=248, PETRI_TRANSITIONS=273} [2024-06-27 18:44:09,099 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 208 predicate places. [2024-06-27 18:44:09,099 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 273 transitions, 3810 flow [2024-06-27 18:44:09,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:09,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:09,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:09,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 18:44:09,100 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:09,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:09,100 INFO L85 PathProgramCache]: Analyzing trace with hash -681131001, now seen corresponding path program 5 times [2024-06-27 18:44:09,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:09,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820301944] [2024-06-27 18:44:09,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:09,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:09,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:09,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:09,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820301944] [2024-06-27 18:44:09,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820301944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:09,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:09,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:09,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977496344] [2024-06-27 18:44:09,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:09,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:09,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:09,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:10,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:10,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 273 transitions, 3810 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:10,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:10,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:10,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:10,735 INFO L124 PetriNetUnfolderBase]: 1551/2617 cut-off events. [2024-06-27 18:44:10,736 INFO L125 PetriNetUnfolderBase]: For 102060/102060 co-relation queries the response was YES. [2024-06-27 18:44:10,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18639 conditions, 2617 events. 1551/2617 cut-off events. For 102060/102060 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 14798 event pairs, 222 based on Foata normal form. 2/2573 useless extension candidates. Maximal degree in co-relation 18519. Up to 1872 conditions per place. [2024-06-27 18:44:10,762 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 219 selfloop transitions, 88 changer transitions 0/313 dead transitions. [2024-06-27 18:44:10,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 313 transitions, 4926 flow [2024-06-27 18:44:10,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:10,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:10,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:44:10,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-27 18:44:10,763 INFO L175 Difference]: Start difference. First operand has 248 places, 273 transitions, 3810 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:44:10,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 313 transitions, 4926 flow [2024-06-27 18:44:11,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 313 transitions, 4739 flow, removed 77 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:11,144 INFO L231 Difference]: Finished difference. Result has 253 places, 276 transitions, 3899 flow [2024-06-27 18:44:11,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3623, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3899, PETRI_PLACES=253, PETRI_TRANSITIONS=276} [2024-06-27 18:44:11,145 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 213 predicate places. [2024-06-27 18:44:11,145 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 276 transitions, 3899 flow [2024-06-27 18:44:11,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:11,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:11,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:11,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 18:44:11,145 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:11,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:11,146 INFO L85 PathProgramCache]: Analyzing trace with hash -140419007, now seen corresponding path program 6 times [2024-06-27 18:44:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:11,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143593686] [2024-06-27 18:44:11,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:11,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:11,978 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 18:44:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:11,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143593686] [2024-06-27 18:44:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143593686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:11,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:11,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460245408] [2024-06-27 18:44:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:11,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:11,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:12,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:12,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 276 transitions, 3899 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:12,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:12,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:12,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:12,814 INFO L124 PetriNetUnfolderBase]: 1547/2611 cut-off events. [2024-06-27 18:44:12,814 INFO L125 PetriNetUnfolderBase]: For 96523/96523 co-relation queries the response was YES. [2024-06-27 18:44:12,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18545 conditions, 2611 events. 1547/2611 cut-off events. For 96523/96523 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 14761 event pairs, 227 based on Foata normal form. 2/2567 useless extension candidates. Maximal degree in co-relation 18423. Up to 1869 conditions per place. [2024-06-27 18:44:12,837 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 222 selfloop transitions, 84 changer transitions 0/312 dead transitions. [2024-06-27 18:44:12,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 312 transitions, 4797 flow [2024-06-27 18:44:12,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:12,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 173 transitions. [2024-06-27 18:44:12,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48055555555555557 [2024-06-27 18:44:12,838 INFO L175 Difference]: Start difference. First operand has 253 places, 276 transitions, 3899 flow. Second operand 10 states and 173 transitions. [2024-06-27 18:44:12,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 312 transitions, 4797 flow [2024-06-27 18:44:13,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 312 transitions, 4485 flow, removed 68 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:13,175 INFO L231 Difference]: Finished difference. Result has 255 places, 276 transitions, 3761 flow [2024-06-27 18:44:13,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3587, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3761, PETRI_PLACES=255, PETRI_TRANSITIONS=276} [2024-06-27 18:44:13,176 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 215 predicate places. [2024-06-27 18:44:13,176 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 276 transitions, 3761 flow [2024-06-27 18:44:13,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:13,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:13,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:13,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 18:44:13,176 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:13,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:13,176 INFO L85 PathProgramCache]: Analyzing trace with hash 491513025, now seen corresponding path program 7 times [2024-06-27 18:44:13,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:13,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835384012] [2024-06-27 18:44:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:13,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:13,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835384012] [2024-06-27 18:44:13,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835384012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:13,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:13,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:13,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242895669] [2024-06-27 18:44:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:13,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:13,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:13,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:13,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:14,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:14,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 276 transitions, 3761 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:14,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:14,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:14,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:14,893 INFO L124 PetriNetUnfolderBase]: 1547/2617 cut-off events. [2024-06-27 18:44:14,893 INFO L125 PetriNetUnfolderBase]: For 94396/94396 co-relation queries the response was YES. [2024-06-27 18:44:14,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18272 conditions, 2617 events. 1547/2617 cut-off events. For 94396/94396 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 14691 event pairs, 225 based on Foata normal form. 2/2568 useless extension candidates. Maximal degree in co-relation 18149. Up to 1208 conditions per place. [2024-06-27 18:44:14,918 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 208 selfloop transitions, 112 changer transitions 0/326 dead transitions. [2024-06-27 18:44:14,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 326 transitions, 5321 flow [2024-06-27 18:44:14,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 182 transitions. [2024-06-27 18:44:14,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5055555555555555 [2024-06-27 18:44:14,919 INFO L175 Difference]: Start difference. First operand has 255 places, 276 transitions, 3761 flow. Second operand 10 states and 182 transitions. [2024-06-27 18:44:14,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 326 transitions, 5321 flow [2024-06-27 18:44:15,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 326 transitions, 5114 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:15,399 INFO L231 Difference]: Finished difference. Result has 255 places, 279 transitions, 3930 flow [2024-06-27 18:44:15,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3554, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3930, PETRI_PLACES=255, PETRI_TRANSITIONS=279} [2024-06-27 18:44:15,400 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 215 predicate places. [2024-06-27 18:44:15,400 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 279 transitions, 3930 flow [2024-06-27 18:44:15,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:15,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:15,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:15,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 18:44:15,400 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:15,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:15,401 INFO L85 PathProgramCache]: Analyzing trace with hash 497999775, now seen corresponding path program 8 times [2024-06-27 18:44:15,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:15,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478179008] [2024-06-27 18:44:15,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:15,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:16,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:16,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478179008] [2024-06-27 18:44:16,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478179008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:16,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:16,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:16,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645903873] [2024-06-27 18:44:16,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:16,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:16,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:16,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:16,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 279 transitions, 3930 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:16,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:16,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:16,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:17,618 INFO L124 PetriNetUnfolderBase]: 1567/2641 cut-off events. [2024-06-27 18:44:17,618 INFO L125 PetriNetUnfolderBase]: For 98808/98808 co-relation queries the response was YES. [2024-06-27 18:44:17,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18832 conditions, 2641 events. 1567/2641 cut-off events. For 98808/98808 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14957 event pairs, 234 based on Foata normal form. 2/2597 useless extension candidates. Maximal degree in co-relation 18708. Up to 2348 conditions per place. [2024-06-27 18:44:17,645 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 279 selfloop transitions, 33 changer transitions 0/318 dead transitions. [2024-06-27 18:44:17,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 318 transitions, 4826 flow [2024-06-27 18:44:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:17,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:44:17,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 18:44:17,647 INFO L175 Difference]: Start difference. First operand has 255 places, 279 transitions, 3930 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:44:17,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 318 transitions, 4826 flow [2024-06-27 18:44:17,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 318 transitions, 4500 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:18,001 INFO L231 Difference]: Finished difference. Result has 259 places, 284 transitions, 3806 flow [2024-06-27 18:44:18,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3609, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3806, PETRI_PLACES=259, PETRI_TRANSITIONS=284} [2024-06-27 18:44:18,002 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 219 predicate places. [2024-06-27 18:44:18,002 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 284 transitions, 3806 flow [2024-06-27 18:44:18,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:18,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:18,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:18,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 18:44:18,003 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:18,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:18,003 INFO L85 PathProgramCache]: Analyzing trace with hash 497769135, now seen corresponding path program 9 times [2024-06-27 18:44:18,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:18,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701349082] [2024-06-27 18:44:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:18,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:18,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:19,205 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 18:44:19,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:19,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701349082] [2024-06-27 18:44:19,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701349082] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:19,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:19,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:19,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110086387] [2024-06-27 18:44:19,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:19,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:19,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:19,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 284 transitions, 3806 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:19,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:19,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:19,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:20,105 INFO L124 PetriNetUnfolderBase]: 1563/2635 cut-off events. [2024-06-27 18:44:20,106 INFO L125 PetriNetUnfolderBase]: For 91836/91836 co-relation queries the response was YES. [2024-06-27 18:44:20,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18041 conditions, 2635 events. 1563/2635 cut-off events. For 91836/91836 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 14915 event pairs, 232 based on Foata normal form. 2/2591 useless extension candidates. Maximal degree in co-relation 17915. Up to 2342 conditions per place. [2024-06-27 18:44:20,134 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 278 selfloop transitions, 33 changer transitions 0/317 dead transitions. [2024-06-27 18:44:20,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 317 transitions, 4580 flow [2024-06-27 18:44:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:20,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:20,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 161 transitions. [2024-06-27 18:44:20,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44722222222222224 [2024-06-27 18:44:20,136 INFO L175 Difference]: Start difference. First operand has 259 places, 284 transitions, 3806 flow. Second operand 10 states and 161 transitions. [2024-06-27 18:44:20,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 317 transitions, 4580 flow [2024-06-27 18:44:20,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 317 transitions, 4390 flow, removed 66 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:20,462 INFO L231 Difference]: Finished difference. Result has 262 places, 284 transitions, 3688 flow [2024-06-27 18:44:20,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3616, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3688, PETRI_PLACES=262, PETRI_TRANSITIONS=284} [2024-06-27 18:44:20,463 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 222 predicate places. [2024-06-27 18:44:20,463 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 284 transitions, 3688 flow [2024-06-27 18:44:20,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:20,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:20,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:20,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 18:44:20,463 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:20,463 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:20,463 INFO L85 PathProgramCache]: Analyzing trace with hash -77527309, now seen corresponding path program 1 times [2024-06-27 18:44:20,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:20,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614080884] [2024-06-27 18:44:20,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:20,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:21,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:21,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:21,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614080884] [2024-06-27 18:44:21,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614080884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:21,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:21,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:21,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465843444] [2024-06-27 18:44:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:21,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:21,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:21,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:21,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 284 transitions, 3688 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:21,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:21,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:21,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:22,012 INFO L124 PetriNetUnfolderBase]: 1578/2659 cut-off events. [2024-06-27 18:44:22,012 INFO L125 PetriNetUnfolderBase]: For 92639/92639 co-relation queries the response was YES. [2024-06-27 18:44:22,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18088 conditions, 2659 events. 1578/2659 cut-off events. For 92639/92639 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14954 event pairs, 294 based on Foata normal form. 2/2617 useless extension candidates. Maximal degree in co-relation 17961. Up to 2317 conditions per place. [2024-06-27 18:44:22,041 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 281 selfloop transitions, 35 changer transitions 0/322 dead transitions. [2024-06-27 18:44:22,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 322 transitions, 4564 flow [2024-06-27 18:44:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:22,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:22,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:44:22,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 18:44:22,044 INFO L175 Difference]: Start difference. First operand has 262 places, 284 transitions, 3688 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:44:22,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 322 transitions, 4564 flow [2024-06-27 18:44:22,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 322 transitions, 4456 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:22,500 INFO L231 Difference]: Finished difference. Result has 262 places, 286 transitions, 3775 flow [2024-06-27 18:44:22,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3580, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3775, PETRI_PLACES=262, PETRI_TRANSITIONS=286} [2024-06-27 18:44:22,500 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 222 predicate places. [2024-06-27 18:44:22,501 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 286 transitions, 3775 flow [2024-06-27 18:44:22,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:22,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:22,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:22,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 18:44:22,501 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:22,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash -2005358935, now seen corresponding path program 2 times [2024-06-27 18:44:22,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:22,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233765015] [2024-06-27 18:44:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:22,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:23,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:23,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:23,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233765015] [2024-06-27 18:44:23,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233765015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:23,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:23,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56442533] [2024-06-27 18:44:23,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:23,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:23,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:23,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:23,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 286 transitions, 3775 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:23,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:23,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:23,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:24,190 INFO L124 PetriNetUnfolderBase]: 1593/2684 cut-off events. [2024-06-27 18:44:24,190 INFO L125 PetriNetUnfolderBase]: For 97842/97842 co-relation queries the response was YES. [2024-06-27 18:44:24,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18364 conditions, 2684 events. 1593/2684 cut-off events. For 97842/97842 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15179 event pairs, 317 based on Foata normal form. 2/2642 useless extension candidates. Maximal degree in co-relation 18236. Up to 2319 conditions per place. [2024-06-27 18:44:24,218 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 280 selfloop transitions, 39 changer transitions 0/325 dead transitions. [2024-06-27 18:44:24,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 325 transitions, 4675 flow [2024-06-27 18:44:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:44:24,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:44:24,219 INFO L175 Difference]: Start difference. First operand has 262 places, 286 transitions, 3775 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:44:24,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 325 transitions, 4675 flow [2024-06-27 18:44:24,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 325 transitions, 4496 flow, removed 56 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:24,548 INFO L231 Difference]: Finished difference. Result has 264 places, 288 transitions, 3803 flow [2024-06-27 18:44:24,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3596, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3803, PETRI_PLACES=264, PETRI_TRANSITIONS=288} [2024-06-27 18:44:24,549 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 224 predicate places. [2024-06-27 18:44:24,549 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 288 transitions, 3803 flow [2024-06-27 18:44:24,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:24,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:24,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:24,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 18:44:24,550 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:24,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:24,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1392548208, now seen corresponding path program 1 times [2024-06-27 18:44:24,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:24,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885573723] [2024-06-27 18:44:24,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:24,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:25,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:25,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885573723] [2024-06-27 18:44:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885573723] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:25,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:25,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:25,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025125617] [2024-06-27 18:44:25,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:25,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:25,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:25,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:25,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:25,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:25,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 288 transitions, 3803 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:25,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:25,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:25,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:26,361 INFO L124 PetriNetUnfolderBase]: 1595/2687 cut-off events. [2024-06-27 18:44:26,361 INFO L125 PetriNetUnfolderBase]: For 97344/97344 co-relation queries the response was YES. [2024-06-27 18:44:26,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18356 conditions, 2687 events. 1595/2687 cut-off events. For 97344/97344 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 15162 event pairs, 322 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 18227. Up to 2283 conditions per place. [2024-06-27 18:44:26,390 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 268 selfloop transitions, 54 changer transitions 0/328 dead transitions. [2024-06-27 18:44:26,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 328 transitions, 4747 flow [2024-06-27 18:44:26,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:26,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:44:26,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:44:26,391 INFO L175 Difference]: Start difference. First operand has 264 places, 288 transitions, 3803 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:44:26,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 328 transitions, 4747 flow [2024-06-27 18:44:26,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 328 transitions, 4546 flow, removed 63 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:26,782 INFO L231 Difference]: Finished difference. Result has 266 places, 291 transitions, 3877 flow [2024-06-27 18:44:26,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3606, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3877, PETRI_PLACES=266, PETRI_TRANSITIONS=291} [2024-06-27 18:44:26,782 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 226 predicate places. [2024-06-27 18:44:26,782 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 291 transitions, 3877 flow [2024-06-27 18:44:26,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:26,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:26,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:26,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 18:44:26,783 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:26,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:26,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1754528289, now seen corresponding path program 3 times [2024-06-27 18:44:26,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:26,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969310946] [2024-06-27 18:44:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:26,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:27,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:27,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:27,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969310946] [2024-06-27 18:44:27,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969310946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:27,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:27,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:27,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513978085] [2024-06-27 18:44:27,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:27,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:27,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:27,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:27,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:27,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:27,706 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 291 transitions, 3877 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:27,706 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:27,706 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:27,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:28,449 INFO L124 PetriNetUnfolderBase]: 1610/2712 cut-off events. [2024-06-27 18:44:28,450 INFO L125 PetriNetUnfolderBase]: For 102016/102016 co-relation queries the response was YES. [2024-06-27 18:44:28,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 2712 events. 1610/2712 cut-off events. For 102016/102016 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15368 event pairs, 328 based on Foata normal form. 2/2670 useless extension candidates. Maximal degree in co-relation 18445. Up to 2319 conditions per place. [2024-06-27 18:44:28,480 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 274 selfloop transitions, 50 changer transitions 0/330 dead transitions. [2024-06-27 18:44:28,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 330 transitions, 4797 flow [2024-06-27 18:44:28,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:44:28,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-27 18:44:28,481 INFO L175 Difference]: Start difference. First operand has 266 places, 291 transitions, 3877 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:44:28,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 330 transitions, 4797 flow [2024-06-27 18:44:28,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 330 transitions, 4562 flow, removed 67 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:28,849 INFO L231 Difference]: Finished difference. Result has 268 places, 293 transitions, 3878 flow [2024-06-27 18:44:28,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3642, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3878, PETRI_PLACES=268, PETRI_TRANSITIONS=293} [2024-06-27 18:44:28,849 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 228 predicate places. [2024-06-27 18:44:28,849 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 293 transitions, 3878 flow [2024-06-27 18:44:28,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:28,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:28,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:28,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 18:44:28,850 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:28,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash 551221979, now seen corresponding path program 4 times [2024-06-27 18:44:28,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:28,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437080560] [2024-06-27 18:44:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:28,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:29,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:29,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:29,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437080560] [2024-06-27 18:44:29,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437080560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:29,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:29,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354551518] [2024-06-27 18:44:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:29,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:29,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:29,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:29,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:29,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 293 transitions, 3878 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:29,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:29,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:29,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:30,591 INFO L124 PetriNetUnfolderBase]: 1628/2742 cut-off events. [2024-06-27 18:44:30,591 INFO L125 PetriNetUnfolderBase]: For 109265/109265 co-relation queries the response was YES. [2024-06-27 18:44:30,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18912 conditions, 2742 events. 1628/2742 cut-off events. For 109265/109265 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 15558 event pairs, 323 based on Foata normal form. 2/2700 useless extension candidates. Maximal degree in co-relation 18781. Up to 2299 conditions per place. [2024-06-27 18:44:30,622 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 275 selfloop transitions, 53 changer transitions 0/334 dead transitions. [2024-06-27 18:44:30,622 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 334 transitions, 4946 flow [2024-06-27 18:44:30,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:30,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:30,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:44:30,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:44:30,623 INFO L175 Difference]: Start difference. First operand has 268 places, 293 transitions, 3878 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:44:30,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 334 transitions, 4946 flow [2024-06-27 18:44:31,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 334 transitions, 4728 flow, removed 61 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:31,088 INFO L231 Difference]: Finished difference. Result has 271 places, 297 transitions, 4057 flow [2024-06-27 18:44:31,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3660, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4057, PETRI_PLACES=271, PETRI_TRANSITIONS=297} [2024-06-27 18:44:31,089 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 231 predicate places. [2024-06-27 18:44:31,089 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 297 transitions, 4057 flow [2024-06-27 18:44:31,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:31,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:31,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:31,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 18:44:31,090 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:31,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash 695327835, now seen corresponding path program 1 times [2024-06-27 18:44:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045386668] [2024-06-27 18:44:31,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:31,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:31,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:31,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045386668] [2024-06-27 18:44:31,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045386668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:31,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:31,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:31,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154562850] [2024-06-27 18:44:31,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:31,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:31,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:32,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:32,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 297 transitions, 4057 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:32,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:32,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:32,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:32,975 INFO L124 PetriNetUnfolderBase]: 1708/2882 cut-off events. [2024-06-27 18:44:32,975 INFO L125 PetriNetUnfolderBase]: For 142616/142616 co-relation queries the response was YES. [2024-06-27 18:44:32,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19969 conditions, 2882 events. 1708/2882 cut-off events. For 142616/142616 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 16629 event pairs, 340 based on Foata normal form. 10/2848 useless extension candidates. Maximal degree in co-relation 19836. Up to 2384 conditions per place. [2024-06-27 18:44:33,005 INFO L140 encePairwiseOnDemand]: 22/36 looper letters, 297 selfloop transitions, 45 changer transitions 0/348 dead transitions. [2024-06-27 18:44:33,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 348 transitions, 5097 flow [2024-06-27 18:44:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:33,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:44:33,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-27 18:44:33,007 INFO L175 Difference]: Start difference. First operand has 271 places, 297 transitions, 4057 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:44:33,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 348 transitions, 5097 flow [2024-06-27 18:44:33,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 348 transitions, 4778 flow, removed 127 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:33,510 INFO L231 Difference]: Finished difference. Result has 277 places, 300 transitions, 3964 flow [2024-06-27 18:44:33,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3739, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3964, PETRI_PLACES=277, PETRI_TRANSITIONS=300} [2024-06-27 18:44:33,510 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 237 predicate places. [2024-06-27 18:44:33,510 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 300 transitions, 3964 flow [2024-06-27 18:44:33,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:33,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:33,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:33,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 18:44:33,511 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:33,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:33,511 INFO L85 PathProgramCache]: Analyzing trace with hash 873596703, now seen corresponding path program 5 times [2024-06-27 18:44:33,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:33,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768210959] [2024-06-27 18:44:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:33,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:34,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:34,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:34,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768210959] [2024-06-27 18:44:34,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768210959] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:34,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:34,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:34,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862294345] [2024-06-27 18:44:34,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:34,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:34,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:34,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:34,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:34,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 300 transitions, 3964 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:34,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:34,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:34,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:35,344 INFO L124 PetriNetUnfolderBase]: 1723/2907 cut-off events. [2024-06-27 18:44:35,345 INFO L125 PetriNetUnfolderBase]: For 124419/124419 co-relation queries the response was YES. [2024-06-27 18:44:35,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20129 conditions, 2907 events. 1723/2907 cut-off events. For 124419/124419 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 16832 event pairs, 359 based on Foata normal form. 2/2865 useless extension candidates. Maximal degree in co-relation 19993. Up to 2564 conditions per place. [2024-06-27 18:44:35,377 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 293 selfloop transitions, 38 changer transitions 0/337 dead transitions. [2024-06-27 18:44:35,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 337 transitions, 4910 flow [2024-06-27 18:44:35,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:35,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:44:35,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:44:35,379 INFO L175 Difference]: Start difference. First operand has 277 places, 300 transitions, 3964 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:44:35,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 337 transitions, 4910 flow [2024-06-27 18:44:35,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 337 transitions, 4753 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:35,875 INFO L231 Difference]: Finished difference. Result has 279 places, 302 transitions, 4028 flow [2024-06-27 18:44:35,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3807, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4028, PETRI_PLACES=279, PETRI_TRANSITIONS=302} [2024-06-27 18:44:35,876 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 239 predicate places. [2024-06-27 18:44:35,876 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 302 transitions, 4028 flow [2024-06-27 18:44:35,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:35,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:35,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:35,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 18:44:35,876 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:35,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:35,877 INFO L85 PathProgramCache]: Analyzing trace with hash -888414101, now seen corresponding path program 6 times [2024-06-27 18:44:35,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:35,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903148689] [2024-06-27 18:44:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:35,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:36,696 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 18:44:36,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:36,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903148689] [2024-06-27 18:44:36,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903148689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:36,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:36,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:36,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932456231] [2024-06-27 18:44:36,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:36,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:36,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:36,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:36,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:36,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 302 transitions, 4028 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:36,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:36,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:36,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:37,721 INFO L124 PetriNetUnfolderBase]: 1834/3100 cut-off events. [2024-06-27 18:44:37,721 INFO L125 PetriNetUnfolderBase]: For 169817/169817 co-relation queries the response was YES. [2024-06-27 18:44:37,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22557 conditions, 3100 events. 1834/3100 cut-off events. For 169817/169817 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18316 event pairs, 379 based on Foata normal form. 2/3058 useless extension candidates. Maximal degree in co-relation 22420. Up to 2552 conditions per place. [2024-06-27 18:44:37,754 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 297 selfloop transitions, 43 changer transitions 0/346 dead transitions. [2024-06-27 18:44:37,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 346 transitions, 5334 flow [2024-06-27 18:44:37,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:37,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:37,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:44:37,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:44:37,755 INFO L175 Difference]: Start difference. First operand has 279 places, 302 transitions, 4028 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:44:37,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 346 transitions, 5334 flow [2024-06-27 18:44:38,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 346 transitions, 5129 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:38,306 INFO L231 Difference]: Finished difference. Result has 281 places, 306 transitions, 4198 flow [2024-06-27 18:44:38,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3823, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4198, PETRI_PLACES=281, PETRI_TRANSITIONS=306} [2024-06-27 18:44:38,306 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 241 predicate places. [2024-06-27 18:44:38,306 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 306 transitions, 4198 flow [2024-06-27 18:44:38,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:38,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:38,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:38,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 18:44:38,307 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:38,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:38,307 INFO L85 PathProgramCache]: Analyzing trace with hash 674294913, now seen corresponding path program 7 times [2024-06-27 18:44:38,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:38,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123228039] [2024-06-27 18:44:38,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:38,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:39,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:39,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123228039] [2024-06-27 18:44:39,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123228039] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:39,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:39,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:39,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057800784] [2024-06-27 18:44:39,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:39,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:39,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:39,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:39,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:39,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 306 transitions, 4198 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:39,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:39,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:39,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:40,249 INFO L124 PetriNetUnfolderBase]: 1849/3125 cut-off events. [2024-06-27 18:44:40,249 INFO L125 PetriNetUnfolderBase]: For 175031/175031 co-relation queries the response was YES. [2024-06-27 18:44:40,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22799 conditions, 3125 events. 1849/3125 cut-off events. For 175031/175031 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18481 event pairs, 394 based on Foata normal form. 2/3082 useless extension candidates. Maximal degree in co-relation 22661. Up to 2738 conditions per place. [2024-06-27 18:44:40,284 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 295 selfloop transitions, 43 changer transitions 0/344 dead transitions. [2024-06-27 18:44:40,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 344 transitions, 5168 flow [2024-06-27 18:44:40,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:40,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:40,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:44:40,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-27 18:44:40,285 INFO L175 Difference]: Start difference. First operand has 281 places, 306 transitions, 4198 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:44:40,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 344 transitions, 5168 flow [2024-06-27 18:44:40,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 344 transitions, 4959 flow, removed 77 selfloop flow, removed 7 redundant places. [2024-06-27 18:44:40,874 INFO L231 Difference]: Finished difference. Result has 284 places, 308 transitions, 4228 flow [2024-06-27 18:44:40,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3991, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4228, PETRI_PLACES=284, PETRI_TRANSITIONS=308} [2024-06-27 18:44:40,874 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 244 predicate places. [2024-06-27 18:44:40,874 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 308 transitions, 4228 flow [2024-06-27 18:44:40,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:40,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:40,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:40,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 18:44:40,875 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:40,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:40,875 INFO L85 PathProgramCache]: Analyzing trace with hash 873806449, now seen corresponding path program 2 times [2024-06-27 18:44:40,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:40,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811092278] [2024-06-27 18:44:40,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:41,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:41,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:41,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811092278] [2024-06-27 18:44:41,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811092278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:41,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:41,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:41,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735943533] [2024-06-27 18:44:41,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:41,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:41,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:41,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:41,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:41,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:41,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 308 transitions, 4228 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:41,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:41,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:41,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:42,780 INFO L124 PetriNetUnfolderBase]: 1914/3240 cut-off events. [2024-06-27 18:44:42,780 INFO L125 PetriNetUnfolderBase]: For 210084/210084 co-relation queries the response was YES. [2024-06-27 18:44:42,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23664 conditions, 3240 events. 1914/3240 cut-off events. For 210084/210084 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 19400 event pairs, 418 based on Foata normal form. 10/3206 useless extension candidates. Maximal degree in co-relation 23525. Up to 2767 conditions per place. [2024-06-27 18:44:42,818 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 309 selfloop transitions, 38 changer transitions 0/353 dead transitions. [2024-06-27 18:44:42,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 353 transitions, 5258 flow [2024-06-27 18:44:42,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:42,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:42,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:44:42,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-27 18:44:42,819 INFO L175 Difference]: Start difference. First operand has 284 places, 308 transitions, 4228 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:44:42,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 353 transitions, 5258 flow [2024-06-27 18:44:43,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 353 transitions, 5037 flow, removed 69 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:43,420 INFO L231 Difference]: Finished difference. Result has 287 places, 309 transitions, 4204 flow [2024-06-27 18:44:43,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4007, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4204, PETRI_PLACES=287, PETRI_TRANSITIONS=309} [2024-06-27 18:44:43,421 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 247 predicate places. [2024-06-27 18:44:43,421 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 309 transitions, 4204 flow [2024-06-27 18:44:43,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:43,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:43,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:43,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 18:44:43,421 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:43,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:43,421 INFO L85 PathProgramCache]: Analyzing trace with hash 880948353, now seen corresponding path program 8 times [2024-06-27 18:44:43,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:43,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769974100] [2024-06-27 18:44:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:43,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:44,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:44,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:44,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769974100] [2024-06-27 18:44:44,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769974100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:44,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:44,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:44,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737753865] [2024-06-27 18:44:44,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:44,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:44,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:44,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:44,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:44,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:44,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 309 transitions, 4204 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:44,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:44,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:44,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:45,200 INFO L124 PetriNetUnfolderBase]: 1898/3212 cut-off events. [2024-06-27 18:44:45,201 INFO L125 PetriNetUnfolderBase]: For 182626/182626 co-relation queries the response was YES. [2024-06-27 18:44:45,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22451 conditions, 3212 events. 1898/3212 cut-off events. For 182626/182626 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 19171 event pairs, 406 based on Foata normal form. 12/3180 useless extension candidates. Maximal degree in co-relation 22311. Up to 2749 conditions per place. [2024-06-27 18:44:45,237 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 305 selfloop transitions, 37 changer transitions 0/348 dead transitions. [2024-06-27 18:44:45,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 348 transitions, 5088 flow [2024-06-27 18:44:45,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:45,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:44:45,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:44:45,239 INFO L175 Difference]: Start difference. First operand has 287 places, 309 transitions, 4204 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:44:45,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 348 transitions, 5088 flow [2024-06-27 18:44:45,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 348 transitions, 4838 flow, removed 86 selfloop flow, removed 10 redundant places. [2024-06-27 18:44:45,793 INFO L231 Difference]: Finished difference. Result has 287 places, 309 transitions, 4034 flow [2024-06-27 18:44:45,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3954, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4034, PETRI_PLACES=287, PETRI_TRANSITIONS=309} [2024-06-27 18:44:45,793 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 247 predicate places. [2024-06-27 18:44:45,793 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 309 transitions, 4034 flow [2024-06-27 18:44:45,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:45,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:45,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:45,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 18:44:45,794 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:45,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:45,794 INFO L85 PathProgramCache]: Analyzing trace with hash -880780165, now seen corresponding path program 3 times [2024-06-27 18:44:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:45,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380683996] [2024-06-27 18:44:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:46,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:46,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:46,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380683996] [2024-06-27 18:44:46,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380683996] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:46,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:46,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:46,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60601644] [2024-06-27 18:44:46,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:46,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:46,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:46,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:46,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:46,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:46,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 309 transitions, 4034 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:46,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:46,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:46,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:47,485 INFO L124 PetriNetUnfolderBase]: 2026/3440 cut-off events. [2024-06-27 18:44:47,485 INFO L125 PetriNetUnfolderBase]: For 201788/201788 co-relation queries the response was YES. [2024-06-27 18:44:47,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24313 conditions, 3440 events. 2026/3440 cut-off events. For 201788/201788 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 20913 event pairs, 410 based on Foata normal form. 8/3404 useless extension candidates. Maximal degree in co-relation 24172. Up to 2566 conditions per place. [2024-06-27 18:44:47,524 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 309 selfloop transitions, 39 changer transitions 0/354 dead transitions. [2024-06-27 18:44:47,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 354 transitions, 5346 flow [2024-06-27 18:44:47,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:44:47,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:44:47,526 INFO L175 Difference]: Start difference. First operand has 287 places, 309 transitions, 4034 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:44:47,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 354 transitions, 5346 flow [2024-06-27 18:44:48,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 354 transitions, 5260 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-27 18:44:48,148 INFO L231 Difference]: Finished difference. Result has 288 places, 311 transitions, 4260 flow [2024-06-27 18:44:48,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3948, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4260, PETRI_PLACES=288, PETRI_TRANSITIONS=311} [2024-06-27 18:44:48,149 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 248 predicate places. [2024-06-27 18:44:48,149 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 311 transitions, 4260 flow [2024-06-27 18:44:48,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:48,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:48,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:48,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 18:44:48,149 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:48,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:48,150 INFO L85 PathProgramCache]: Analyzing trace with hash 880956289, now seen corresponding path program 4 times [2024-06-27 18:44:48,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:48,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633303990] [2024-06-27 18:44:48,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:48,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:48,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:48,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:48,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633303990] [2024-06-27 18:44:48,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633303990] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:48,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:48,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:48,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183595984] [2024-06-27 18:44:48,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:48,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:48,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:48,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:48,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:49,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:49,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 311 transitions, 4260 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:49,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:49,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:49,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:50,175 INFO L124 PetriNetUnfolderBase]: 2013/3417 cut-off events. [2024-06-27 18:44:50,175 INFO L125 PetriNetUnfolderBase]: For 183359/183359 co-relation queries the response was YES. [2024-06-27 18:44:50,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23483 conditions, 3417 events. 2013/3417 cut-off events. For 183359/183359 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 20816 event pairs, 440 based on Foata normal form. 10/3383 useless extension candidates. Maximal degree in co-relation 23341. Up to 2824 conditions per place. [2024-06-27 18:44:50,216 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 312 selfloop transitions, 37 changer transitions 0/355 dead transitions. [2024-06-27 18:44:50,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 355 transitions, 5182 flow [2024-06-27 18:44:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:44:50,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:44:50,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:44:50,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-27 18:44:50,218 INFO L175 Difference]: Start difference. First operand has 288 places, 311 transitions, 4260 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:44:50,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 355 transitions, 5182 flow [2024-06-27 18:44:50,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 355 transitions, 4967 flow, removed 88 selfloop flow, removed 6 redundant places. [2024-06-27 18:44:50,840 INFO L231 Difference]: Finished difference. Result has 293 places, 311 transitions, 4127 flow [2024-06-27 18:44:50,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4045, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4127, PETRI_PLACES=293, PETRI_TRANSITIONS=311} [2024-06-27 18:44:50,841 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 253 predicate places. [2024-06-27 18:44:50,841 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 311 transitions, 4127 flow [2024-06-27 18:44:50,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:50,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:50,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:50,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 18:44:50,842 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:50,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:50,842 INFO L85 PathProgramCache]: Analyzing trace with hash 674289333, now seen corresponding path program 9 times [2024-06-27 18:44:50,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:50,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016617878] [2024-06-27 18:44:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:50,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:51,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:51,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:51,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016617878] [2024-06-27 18:44:51,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016617878] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:51,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:51,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:51,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671802873] [2024-06-27 18:44:51,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:51,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:51,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:51,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:51,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:51,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:51,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 311 transitions, 4127 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:51,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:51,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:51,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:52,989 INFO L124 PetriNetUnfolderBase]: 2028/3442 cut-off events. [2024-06-27 18:44:52,990 INFO L125 PetriNetUnfolderBase]: For 139715/139715 co-relation queries the response was YES. [2024-06-27 18:44:53,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23217 conditions, 3442 events. 2028/3442 cut-off events. For 139715/139715 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 21100 event pairs, 469 based on Foata normal form. 2/3399 useless extension candidates. Maximal degree in co-relation 23073. Up to 3014 conditions per place. [2024-06-27 18:44:53,030 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 297 selfloop transitions, 46 changer transitions 0/349 dead transitions. [2024-06-27 18:44:53,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 349 transitions, 5111 flow [2024-06-27 18:44:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:44:53,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:44:53,031 INFO L175 Difference]: Start difference. First operand has 293 places, 311 transitions, 4127 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:44:53,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 349 transitions, 5111 flow [2024-06-27 18:44:53,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 349 transitions, 5017 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 18:44:53,701 INFO L231 Difference]: Finished difference. Result has 292 places, 313 transitions, 4284 flow [2024-06-27 18:44:53,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4033, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4284, PETRI_PLACES=292, PETRI_TRANSITIONS=313} [2024-06-27 18:44:53,701 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 252 predicate places. [2024-06-27 18:44:53,701 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 313 transitions, 4284 flow [2024-06-27 18:44:53,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:53,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:53,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:53,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 18:44:53,702 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:53,702 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1521187471, now seen corresponding path program 5 times [2024-06-27 18:44:53,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:53,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949532631] [2024-06-27 18:44:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:53,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:54,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:54,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:54,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949532631] [2024-06-27 18:44:54,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949532631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:54,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:54,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:44:54,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656786016] [2024-06-27 18:44:54,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:54,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:44:54,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:54,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:44:54,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:44:54,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:54,556 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 313 transitions, 4284 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:54,556 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:54,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:54,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:55,572 INFO L124 PetriNetUnfolderBase]: 2109/3595 cut-off events. [2024-06-27 18:44:55,572 INFO L125 PetriNetUnfolderBase]: For 188298/188298 co-relation queries the response was YES. [2024-06-27 18:44:55,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24732 conditions, 3595 events. 2109/3595 cut-off events. For 188298/188298 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 22336 event pairs, 440 based on Foata normal form. 10/3556 useless extension candidates. Maximal degree in co-relation 24588. Up to 2667 conditions per place. [2024-06-27 18:44:55,608 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 287 selfloop transitions, 71 changer transitions 0/364 dead transitions. [2024-06-27 18:44:55,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 364 transitions, 5741 flow [2024-06-27 18:44:55,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 178 transitions. [2024-06-27 18:44:55,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49444444444444446 [2024-06-27 18:44:55,609 INFO L175 Difference]: Start difference. First operand has 292 places, 313 transitions, 4284 flow. Second operand 10 states and 178 transitions. [2024-06-27 18:44:55,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 364 transitions, 5741 flow [2024-06-27 18:44:56,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 364 transitions, 5506 flow, removed 73 selfloop flow, removed 8 redundant places. [2024-06-27 18:44:56,204 INFO L231 Difference]: Finished difference. Result has 296 places, 319 transitions, 4533 flow [2024-06-27 18:44:56,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4049, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4533, PETRI_PLACES=296, PETRI_TRANSITIONS=319} [2024-06-27 18:44:56,204 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 256 predicate places. [2024-06-27 18:44:56,204 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 319 transitions, 4533 flow [2024-06-27 18:44:56,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:56,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:56,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:56,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 18:44:56,205 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:56,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:56,205 INFO L85 PathProgramCache]: Analyzing trace with hash 674145183, now seen corresponding path program 10 times [2024-06-27 18:44:56,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:56,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934806473] [2024-06-27 18:44:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:56,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:57,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:57,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934806473] [2024-06-27 18:44:57,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934806473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:57,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:57,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:57,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145631166] [2024-06-27 18:44:57,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:57,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:57,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:57,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:57,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:57,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:57,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 319 transitions, 4533 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:57,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:57,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:57,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:44:58,149 INFO L124 PetriNetUnfolderBase]: 2124/3620 cut-off events. [2024-06-27 18:44:58,149 INFO L125 PetriNetUnfolderBase]: For 170053/170053 co-relation queries the response was YES. [2024-06-27 18:44:58,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25323 conditions, 3620 events. 2124/3620 cut-off events. For 170053/170053 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 22564 event pairs, 496 based on Foata normal form. 2/3573 useless extension candidates. Maximal degree in co-relation 25176. Up to 3221 conditions per place. [2024-06-27 18:44:58,185 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 311 selfloop transitions, 40 changer transitions 0/357 dead transitions. [2024-06-27 18:44:58,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 357 transitions, 5539 flow [2024-06-27 18:44:58,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:44:58,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:44:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 160 transitions. [2024-06-27 18:44:58,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:44:58,187 INFO L175 Difference]: Start difference. First operand has 296 places, 319 transitions, 4533 flow. Second operand 10 states and 160 transitions. [2024-06-27 18:44:58,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 357 transitions, 5539 flow [2024-06-27 18:44:58,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 357 transitions, 5395 flow, removed 55 selfloop flow, removed 5 redundant places. [2024-06-27 18:44:58,886 INFO L231 Difference]: Finished difference. Result has 301 places, 321 transitions, 4636 flow [2024-06-27 18:44:58,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4389, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4636, PETRI_PLACES=301, PETRI_TRANSITIONS=321} [2024-06-27 18:44:58,886 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 261 predicate places. [2024-06-27 18:44:58,887 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 321 transitions, 4636 flow [2024-06-27 18:44:58,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:58,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:44:58,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:44:58,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 18:44:58,887 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:44:58,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:44:58,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1664536263, now seen corresponding path program 11 times [2024-06-27 18:44:58,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:44:58,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604764759] [2024-06-27 18:44:58,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:44:58,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:44:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:44:59,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:44:59,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:44:59,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604764759] [2024-06-27 18:44:59,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604764759] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:44:59,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:44:59,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:44:59,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806458028] [2024-06-27 18:44:59,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:44:59,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:44:59,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:44:59,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:44:59,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:44:59,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:44:59,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 321 transitions, 4636 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:44:59,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:44:59,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:44:59,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:00,705 INFO L124 PetriNetUnfolderBase]: 2204/3761 cut-off events. [2024-06-27 18:45:00,705 INFO L125 PetriNetUnfolderBase]: For 214454/214454 co-relation queries the response was YES. [2024-06-27 18:45:00,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26541 conditions, 3761 events. 2204/3761 cut-off events. For 214454/214454 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 23736 event pairs, 383 based on Foata normal form. 12/3723 useless extension candidates. Maximal degree in co-relation 26392. Up to 2859 conditions per place. [2024-06-27 18:45:00,861 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 265 selfloop transitions, 91 changer transitions 0/362 dead transitions. [2024-06-27 18:45:00,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 362 transitions, 5720 flow [2024-06-27 18:45:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 175 transitions. [2024-06-27 18:45:00,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-06-27 18:45:00,862 INFO L175 Difference]: Start difference. First operand has 301 places, 321 transitions, 4636 flow. Second operand 10 states and 175 transitions. [2024-06-27 18:45:00,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 362 transitions, 5720 flow [2024-06-27 18:45:01,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 362 transitions, 5489 flow, removed 77 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:01,641 INFO L231 Difference]: Finished difference. Result has 303 places, 323 transitions, 4759 flow [2024-06-27 18:45:01,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4405, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4759, PETRI_PLACES=303, PETRI_TRANSITIONS=323} [2024-06-27 18:45:01,642 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 263 predicate places. [2024-06-27 18:45:01,642 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 323 transitions, 4759 flow [2024-06-27 18:45:01,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:01,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:01,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:01,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 18:45:01,643 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:01,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash 834153823, now seen corresponding path program 6 times [2024-06-27 18:45:01,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:01,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546080760] [2024-06-27 18:45:01,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:01,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:02,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:02,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:02,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546080760] [2024-06-27 18:45:02,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546080760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:02,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:02,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:02,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792707468] [2024-06-27 18:45:02,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:02,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:02,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:02,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:02,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 323 transitions, 4759 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:02,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:02,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:02,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:03,687 INFO L124 PetriNetUnfolderBase]: 2269/3876 cut-off events. [2024-06-27 18:45:03,687 INFO L125 PetriNetUnfolderBase]: For 226865/226865 co-relation queries the response was YES. [2024-06-27 18:45:03,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27733 conditions, 3876 events. 2269/3876 cut-off events. For 226865/226865 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 24679 event pairs, 397 based on Foata normal form. 10/3836 useless extension candidates. Maximal degree in co-relation 27583. Up to 2844 conditions per place. [2024-06-27 18:45:03,742 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 271 selfloop transitions, 91 changer transitions 0/368 dead transitions. [2024-06-27 18:45:03,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 368 transitions, 5841 flow [2024-06-27 18:45:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 191 transitions. [2024-06-27 18:45:03,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4823232323232323 [2024-06-27 18:45:03,743 INFO L175 Difference]: Start difference. First operand has 303 places, 323 transitions, 4759 flow. Second operand 11 states and 191 transitions. [2024-06-27 18:45:03,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 368 transitions, 5841 flow [2024-06-27 18:45:04,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 368 transitions, 5531 flow, removed 66 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:04,934 INFO L231 Difference]: Finished difference. Result has 306 places, 324 transitions, 4765 flow [2024-06-27 18:45:04,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4449, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4765, PETRI_PLACES=306, PETRI_TRANSITIONS=324} [2024-06-27 18:45:04,934 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 266 predicate places. [2024-06-27 18:45:04,935 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 324 transitions, 4765 flow [2024-06-27 18:45:04,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:04,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:04,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:04,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 18:45:04,935 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:04,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:04,936 INFO L85 PathProgramCache]: Analyzing trace with hash -57752113, now seen corresponding path program 7 times [2024-06-27 18:45:04,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:04,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382427686] [2024-06-27 18:45:04,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:04,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:04,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:05,627 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 18:45:05,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:05,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382427686] [2024-06-27 18:45:05,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382427686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:05,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:05,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:05,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207607789] [2024-06-27 18:45:05,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:05,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:05,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:05,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:05,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:05,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:05,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 324 transitions, 4765 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:05,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:05,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:05,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:06,726 INFO L124 PetriNetUnfolderBase]: 2415/4134 cut-off events. [2024-06-27 18:45:06,726 INFO L125 PetriNetUnfolderBase]: For 284069/284069 co-relation queries the response was YES. [2024-06-27 18:45:06,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30591 conditions, 4134 events. 2415/4134 cut-off events. For 284069/284069 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 26675 event pairs, 418 based on Foata normal form. 8/4092 useless extension candidates. Maximal degree in co-relation 30440. Up to 2816 conditions per place. [2024-06-27 18:45:06,780 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 272 selfloop transitions, 92 changer transitions 0/370 dead transitions. [2024-06-27 18:45:06,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 370 transitions, 6197 flow [2024-06-27 18:45:06,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:06,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 177 transitions. [2024-06-27 18:45:06,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49166666666666664 [2024-06-27 18:45:06,781 INFO L175 Difference]: Start difference. First operand has 306 places, 324 transitions, 4765 flow. Second operand 10 states and 177 transitions. [2024-06-27 18:45:06,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 370 transitions, 6197 flow [2024-06-27 18:45:07,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 370 transitions, 5925 flow, removed 48 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:08,003 INFO L231 Difference]: Finished difference. Result has 307 places, 326 transitions, 4935 flow [2024-06-27 18:45:08,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4493, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4935, PETRI_PLACES=307, PETRI_TRANSITIONS=326} [2024-06-27 18:45:08,003 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 267 predicate places. [2024-06-27 18:45:08,003 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 326 transitions, 4935 flow [2024-06-27 18:45:08,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:08,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:08,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:08,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 18:45:08,004 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:08,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:08,004 INFO L85 PathProgramCache]: Analyzing trace with hash 190132559, now seen corresponding path program 12 times [2024-06-27 18:45:08,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:08,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664132816] [2024-06-27 18:45:08,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:08,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:08,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:08,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664132816] [2024-06-27 18:45:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664132816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:08,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:08,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:08,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215455284] [2024-06-27 18:45:08,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:08,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:08,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:08,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:08,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:08,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 326 transitions, 4935 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:08,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:08,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:08,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:10,081 INFO L124 PetriNetUnfolderBase]: 2495/4273 cut-off events. [2024-06-27 18:45:10,081 INFO L125 PetriNetUnfolderBase]: For 313172/313172 co-relation queries the response was YES. [2024-06-27 18:45:10,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31761 conditions, 4273 events. 2495/4273 cut-off events. For 313172/313172 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 27833 event pairs, 603 based on Foata normal form. 12/4236 useless extension candidates. Maximal degree in co-relation 31609. Up to 3860 conditions per place. [2024-06-27 18:45:10,138 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 329 selfloop transitions, 29 changer transitions 0/364 dead transitions. [2024-06-27 18:45:10,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 364 transitions, 6017 flow [2024-06-27 18:45:10,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:10,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:10,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 165 transitions. [2024-06-27 18:45:10,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2024-06-27 18:45:10,139 INFO L175 Difference]: Start difference. First operand has 307 places, 326 transitions, 4935 flow. Second operand 10 states and 165 transitions. [2024-06-27 18:45:10,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 364 transitions, 6017 flow [2024-06-27 18:45:11,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 364 transitions, 5803 flow, removed 58 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:11,489 INFO L231 Difference]: Finished difference. Result has 311 places, 328 transitions, 4959 flow [2024-06-27 18:45:11,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4721, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4959, PETRI_PLACES=311, PETRI_TRANSITIONS=328} [2024-06-27 18:45:11,490 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 271 predicate places. [2024-06-27 18:45:11,490 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 328 transitions, 4959 flow [2024-06-27 18:45:11,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:11,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:11,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 18:45:11,490 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:11,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:11,491 INFO L85 PathProgramCache]: Analyzing trace with hash 190140495, now seen corresponding path program 8 times [2024-06-27 18:45:11,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:11,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756775249] [2024-06-27 18:45:11,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:12,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756775249] [2024-06-27 18:45:12,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756775249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:12,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:12,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154482571] [2024-06-27 18:45:12,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:12,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:12,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:12,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:12,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:12,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:12,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 328 transitions, 4959 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:12,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:12,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:12,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:13,482 INFO L124 PetriNetUnfolderBase]: 2560/4388 cut-off events. [2024-06-27 18:45:13,482 INFO L125 PetriNetUnfolderBase]: For 314969/314969 co-relation queries the response was YES. [2024-06-27 18:45:13,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32650 conditions, 4388 events. 2560/4388 cut-off events. For 314969/314969 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 28788 event pairs, 620 based on Foata normal form. 10/4349 useless extension candidates. Maximal degree in co-relation 32496. Up to 3845 conditions per place. [2024-06-27 18:45:13,544 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 334 selfloop transitions, 29 changer transitions 0/369 dead transitions. [2024-06-27 18:45:13,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 369 transitions, 6031 flow [2024-06-27 18:45:13,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:13,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:45:13,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-27 18:45:13,546 INFO L175 Difference]: Start difference. First operand has 311 places, 328 transitions, 4959 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:45:13,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 369 transitions, 6031 flow [2024-06-27 18:45:14,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 369 transitions, 5837 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:14,856 INFO L231 Difference]: Finished difference. Result has 314 places, 329 transitions, 4963 flow [2024-06-27 18:45:14,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4765, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4963, PETRI_PLACES=314, PETRI_TRANSITIONS=329} [2024-06-27 18:45:14,857 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 274 predicate places. [2024-06-27 18:45:14,857 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 329 transitions, 4963 flow [2024-06-27 18:45:14,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:14,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:14,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:14,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 18:45:14,858 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:14,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash 359566741, now seen corresponding path program 13 times [2024-06-27 18:45:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045070799] [2024-06-27 18:45:14,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:14,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:15,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:15,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:15,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045070799] [2024-06-27 18:45:15,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045070799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:15,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:15,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:15,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587419431] [2024-06-27 18:45:15,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:15,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:15,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:15,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:15,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:15,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 329 transitions, 4963 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:15,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:15,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:15,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:16,824 INFO L124 PetriNetUnfolderBase]: 2557/4384 cut-off events. [2024-06-27 18:45:16,824 INFO L125 PetriNetUnfolderBase]: For 261263/261263 co-relation queries the response was YES. [2024-06-27 18:45:16,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31735 conditions, 4384 events. 2557/4384 cut-off events. For 261263/261263 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 28903 event pairs, 482 based on Foata normal form. 2/4336 useless extension candidates. Maximal degree in co-relation 31580. Up to 3602 conditions per place. [2024-06-27 18:45:16,883 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 265 selfloop transitions, 95 changer transitions 0/366 dead transitions. [2024-06-27 18:45:16,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 366 transitions, 6005 flow [2024-06-27 18:45:16,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:16,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 170 transitions. [2024-06-27 18:45:16,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-06-27 18:45:16,884 INFO L175 Difference]: Start difference. First operand has 314 places, 329 transitions, 4963 flow. Second operand 10 states and 170 transitions. [2024-06-27 18:45:16,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 366 transitions, 6005 flow [2024-06-27 18:45:18,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 366 transitions, 5851 flow, removed 51 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:18,079 INFO L231 Difference]: Finished difference. Result has 315 places, 331 transitions, 5172 flow [2024-06-27 18:45:18,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4809, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5172, PETRI_PLACES=315, PETRI_TRANSITIONS=331} [2024-06-27 18:45:18,079 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 275 predicate places. [2024-06-27 18:45:18,079 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 331 transitions, 5172 flow [2024-06-27 18:45:18,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:18,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:18,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:18,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 18:45:18,080 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:18,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:18,080 INFO L85 PathProgramCache]: Analyzing trace with hash 359561161, now seen corresponding path program 14 times [2024-06-27 18:45:18,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:18,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252891981] [2024-06-27 18:45:18,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:18,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:18,792 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 18:45:18,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:18,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252891981] [2024-06-27 18:45:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252891981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:18,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390646532] [2024-06-27 18:45:18,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:18,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:18,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:18,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:18,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 331 transitions, 5172 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:18,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:18,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:18,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:20,016 INFO L124 PetriNetUnfolderBase]: 2572/4409 cut-off events. [2024-06-27 18:45:20,016 INFO L125 PetriNetUnfolderBase]: For 252897/252897 co-relation queries the response was YES. [2024-06-27 18:45:20,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32050 conditions, 4409 events. 2572/4409 cut-off events. For 252897/252897 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29033 event pairs, 473 based on Foata normal form. 2/4361 useless extension candidates. Maximal degree in co-relation 31894. Up to 3310 conditions per place. [2024-06-27 18:45:20,071 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 264 selfloop transitions, 102 changer transitions 0/372 dead transitions. [2024-06-27 18:45:20,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 372 transitions, 6290 flow [2024-06-27 18:45:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:20,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 174 transitions. [2024-06-27 18:45:20,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48333333333333334 [2024-06-27 18:45:20,073 INFO L175 Difference]: Start difference. First operand has 315 places, 331 transitions, 5172 flow. Second operand 10 states and 174 transitions. [2024-06-27 18:45:20,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 372 transitions, 6290 flow [2024-06-27 18:45:21,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 372 transitions, 5945 flow, removed 79 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:21,478 INFO L231 Difference]: Finished difference. Result has 317 places, 333 transitions, 5218 flow [2024-06-27 18:45:21,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4827, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5218, PETRI_PLACES=317, PETRI_TRANSITIONS=333} [2024-06-27 18:45:21,478 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 277 predicate places. [2024-06-27 18:45:21,478 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 333 transitions, 5218 flow [2024-06-27 18:45:21,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:21,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:21,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:21,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 18:45:21,479 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:21,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:21,479 INFO L85 PathProgramCache]: Analyzing trace with hash -65170723, now seen corresponding path program 9 times [2024-06-27 18:45:21,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:21,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312824704] [2024-06-27 18:45:21,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:21,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:22,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:22,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:22,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312824704] [2024-06-27 18:45:22,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312824704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:22,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:22,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:22,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673039727] [2024-06-27 18:45:22,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:22,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:22,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:22,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:22,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 333 transitions, 5218 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:22,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:22,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:22,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:23,591 INFO L124 PetriNetUnfolderBase]: 2559/4386 cut-off events. [2024-06-27 18:45:23,592 INFO L125 PetriNetUnfolderBase]: For 244661/244661 co-relation queries the response was YES. [2024-06-27 18:45:23,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30928 conditions, 4386 events. 2559/4386 cut-off events. For 244661/244661 co-relation queries the response was YES. Maximal size of possible extension queue 290. Compared 28870 event pairs, 467 based on Foata normal form. 10/4346 useless extension candidates. Maximal degree in co-relation 30771. Up to 3474 conditions per place. [2024-06-27 18:45:23,642 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 276 selfloop transitions, 95 changer transitions 0/377 dead transitions. [2024-06-27 18:45:23,642 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 377 transitions, 6194 flow [2024-06-27 18:45:23,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:23,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:23,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 190 transitions. [2024-06-27 18:45:23,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4797979797979798 [2024-06-27 18:45:23,644 INFO L175 Difference]: Start difference. First operand has 317 places, 333 transitions, 5218 flow. Second operand 11 states and 190 transitions. [2024-06-27 18:45:23,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 377 transitions, 6194 flow [2024-06-27 18:45:24,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 377 transitions, 5733 flow, removed 130 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:24,517 INFO L231 Difference]: Finished difference. Result has 320 places, 333 transitions, 4954 flow [2024-06-27 18:45:24,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4757, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4954, PETRI_PLACES=320, PETRI_TRANSITIONS=333} [2024-06-27 18:45:24,517 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 280 predicate places. [2024-06-27 18:45:24,517 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 333 transitions, 4954 flow [2024-06-27 18:45:24,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:24,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:24,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:24,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 18:45:24,518 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:24,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:24,518 INFO L85 PathProgramCache]: Analyzing trace with hash 504108495, now seen corresponding path program 10 times [2024-06-27 18:45:24,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:24,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453066251] [2024-06-27 18:45:24,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:24,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:25,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:25,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453066251] [2024-06-27 18:45:25,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453066251] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:25,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:25,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:25,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328681434] [2024-06-27 18:45:25,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:25,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:25,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:25,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:25,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 333 transitions, 4954 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:25,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:25,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:25,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:26,581 INFO L124 PetriNetUnfolderBase]: 2609/4475 cut-off events. [2024-06-27 18:45:26,581 INFO L125 PetriNetUnfolderBase]: For 233209/233209 co-relation queries the response was YES. [2024-06-27 18:45:26,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31020 conditions, 4475 events. 2609/4475 cut-off events. For 233209/233209 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 29530 event pairs, 611 based on Foata normal form. 8/4434 useless extension candidates. Maximal degree in co-relation 30862. Up to 3822 conditions per place. [2024-06-27 18:45:26,645 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 338 selfloop transitions, 29 changer transitions 0/373 dead transitions. [2024-06-27 18:45:26,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 373 transitions, 6050 flow [2024-06-27 18:45:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:26,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-06-27 18:45:26,647 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46111111111111114 [2024-06-27 18:45:26,647 INFO L175 Difference]: Start difference. First operand has 320 places, 333 transitions, 4954 flow. Second operand 10 states and 166 transitions. [2024-06-27 18:45:26,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 373 transitions, 6050 flow [2024-06-27 18:45:27,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 373 transitions, 5845 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:45:27,734 INFO L231 Difference]: Finished difference. Result has 320 places, 334 transitions, 4947 flow [2024-06-27 18:45:27,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4749, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4947, PETRI_PLACES=320, PETRI_TRANSITIONS=334} [2024-06-27 18:45:27,734 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 280 predicate places. [2024-06-27 18:45:27,734 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 334 transitions, 4947 flow [2024-06-27 18:45:27,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:27,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:27,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:27,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 18:45:27,735 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:27,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash 940097595, now seen corresponding path program 11 times [2024-06-27 18:45:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:27,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434209344] [2024-06-27 18:45:27,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:27,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:28,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:28,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434209344] [2024-06-27 18:45:28,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434209344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:28,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:28,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479844992] [2024-06-27 18:45:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:28,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:28,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:28,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 334 transitions, 4947 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:28,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:28,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:28,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:29,670 INFO L124 PetriNetUnfolderBase]: 2659/4565 cut-off events. [2024-06-27 18:45:29,670 INFO L125 PetriNetUnfolderBase]: For 254551/254551 co-relation queries the response was YES. [2024-06-27 18:45:29,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31618 conditions, 4565 events. 2659/4565 cut-off events. For 254551/254551 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 30231 event pairs, 623 based on Foata normal form. 8/4524 useless extension candidates. Maximal degree in co-relation 31459. Up to 3779 conditions per place. [2024-06-27 18:45:29,737 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 340 selfloop transitions, 33 changer transitions 0/379 dead transitions. [2024-06-27 18:45:29,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 379 transitions, 6079 flow [2024-06-27 18:45:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:29,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:29,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:45:29,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-27 18:45:29,738 INFO L175 Difference]: Start difference. First operand has 320 places, 334 transitions, 4947 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:45:29,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 379 transitions, 6079 flow [2024-06-27 18:45:30,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 379 transitions, 5907 flow, removed 58 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:30,942 INFO L231 Difference]: Finished difference. Result has 323 places, 335 transitions, 4983 flow [2024-06-27 18:45:30,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4775, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4983, PETRI_PLACES=323, PETRI_TRANSITIONS=335} [2024-06-27 18:45:30,942 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 283 predicate places. [2024-06-27 18:45:30,942 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 335 transitions, 4983 flow [2024-06-27 18:45:30,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:30,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:30,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:30,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 18:45:30,943 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:30,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:30,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1523589287, now seen corresponding path program 15 times [2024-06-27 18:45:30,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:30,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827109476] [2024-06-27 18:45:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:30,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:31,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:31,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:31,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827109476] [2024-06-27 18:45:31,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827109476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:31,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:31,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:31,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378435258] [2024-06-27 18:45:31,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:31,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:31,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:31,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:31,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 335 transitions, 4983 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:31,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:31,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:33,156 INFO L124 PetriNetUnfolderBase]: 2674/4591 cut-off events. [2024-06-27 18:45:33,156 INFO L125 PetriNetUnfolderBase]: For 225903/225903 co-relation queries the response was YES. [2024-06-27 18:45:33,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31679 conditions, 4591 events. 2674/4591 cut-off events. For 225903/225903 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30588 event pairs, 485 based on Foata normal form. 2/4540 useless extension candidates. Maximal degree in co-relation 31519. Up to 4153 conditions per place. [2024-06-27 18:45:33,221 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 317 selfloop transitions, 49 changer transitions 0/372 dead transitions. [2024-06-27 18:45:33,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 372 transitions, 6057 flow [2024-06-27 18:45:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:33,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 162 transitions. [2024-06-27 18:45:33,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2024-06-27 18:45:33,223 INFO L175 Difference]: Start difference. First operand has 323 places, 335 transitions, 4983 flow. Second operand 10 states and 162 transitions. [2024-06-27 18:45:33,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 372 transitions, 6057 flow [2024-06-27 18:45:34,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 372 transitions, 5875 flow, removed 59 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:34,298 INFO L231 Difference]: Finished difference. Result has 324 places, 337 transitions, 5094 flow [2024-06-27 18:45:34,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4801, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5094, PETRI_PLACES=324, PETRI_TRANSITIONS=337} [2024-06-27 18:45:34,298 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 284 predicate places. [2024-06-27 18:45:34,298 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 337 transitions, 5094 flow [2024-06-27 18:45:34,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:34,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:34,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:34,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 18:45:34,299 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:34,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:34,299 INFO L85 PathProgramCache]: Analyzing trace with hash 33008585, now seen corresponding path program 16 times [2024-06-27 18:45:34,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:34,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510779995] [2024-06-27 18:45:34,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:34,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:35,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:35,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510779995] [2024-06-27 18:45:35,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510779995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:35,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:35,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:35,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569003756] [2024-06-27 18:45:35,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:35,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:35,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:35,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:35,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:35,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:35,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 337 transitions, 5094 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:35,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:35,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:35,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:36,690 INFO L124 PetriNetUnfolderBase]: 2689/4616 cut-off events. [2024-06-27 18:45:36,690 INFO L125 PetriNetUnfolderBase]: For 221505/221505 co-relation queries the response was YES. [2024-06-27 18:45:36,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31804 conditions, 4616 events. 2689/4616 cut-off events. For 221505/221505 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 30791 event pairs, 483 based on Foata normal form. 2/4565 useless extension candidates. Maximal degree in co-relation 31643. Up to 4137 conditions per place. [2024-06-27 18:45:36,755 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 316 selfloop transitions, 52 changer transitions 0/374 dead transitions. [2024-06-27 18:45:36,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 374 transitions, 6174 flow [2024-06-27 18:45:36,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:36,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:36,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-06-27 18:45:36,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4527777777777778 [2024-06-27 18:45:36,757 INFO L175 Difference]: Start difference. First operand has 324 places, 337 transitions, 5094 flow. Second operand 10 states and 163 transitions. [2024-06-27 18:45:36,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 374 transitions, 6174 flow [2024-06-27 18:45:37,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 374 transitions, 5897 flow, removed 91 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:37,929 INFO L231 Difference]: Finished difference. Result has 326 places, 339 transitions, 5120 flow [2024-06-27 18:45:37,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4817, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5120, PETRI_PLACES=326, PETRI_TRANSITIONS=339} [2024-06-27 18:45:37,930 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 286 predicate places. [2024-06-27 18:45:37,930 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 339 transitions, 5120 flow [2024-06-27 18:45:37,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:37,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:37,931 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:37,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 18:45:37,931 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:37,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:37,931 INFO L85 PathProgramCache]: Analyzing trace with hash 239667605, now seen corresponding path program 17 times [2024-06-27 18:45:37,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:37,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020053748] [2024-06-27 18:45:37,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:37,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:38,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:38,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020053748] [2024-06-27 18:45:38,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020053748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:38,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:38,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:38,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613082910] [2024-06-27 18:45:38,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:38,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:38,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:38,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:38,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:38,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:38,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 339 transitions, 5120 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:38,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:38,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:38,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:40,075 INFO L124 PetriNetUnfolderBase]: 2769/4756 cut-off events. [2024-06-27 18:45:40,075 INFO L125 PetriNetUnfolderBase]: For 293534/293534 co-relation queries the response was YES. [2024-06-27 18:45:40,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33220 conditions, 4756 events. 2769/4756 cut-off events. For 293534/293534 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 31924 event pairs, 574 based on Foata normal form. 12/4718 useless extension candidates. Maximal degree in co-relation 33058. Up to 4263 conditions per place. [2024-06-27 18:45:40,135 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 331 selfloop transitions, 42 changer transitions 0/379 dead transitions. [2024-06-27 18:45:40,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 379 transitions, 6266 flow [2024-06-27 18:45:40,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2024-06-27 18:45:40,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638888888888889 [2024-06-27 18:45:40,136 INFO L175 Difference]: Start difference. First operand has 326 places, 339 transitions, 5120 flow. Second operand 10 states and 167 transitions. [2024-06-27 18:45:40,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 379 transitions, 6266 flow [2024-06-27 18:45:41,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 379 transitions, 5979 flow, removed 93 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:41,318 INFO L231 Difference]: Finished difference. Result has 328 places, 341 transitions, 5122 flow [2024-06-27 18:45:41,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4833, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5122, PETRI_PLACES=328, PETRI_TRANSITIONS=341} [2024-06-27 18:45:41,318 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 288 predicate places. [2024-06-27 18:45:41,318 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 341 transitions, 5122 flow [2024-06-27 18:45:41,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:41,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:41,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:41,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 18:45:41,319 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:41,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:41,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1316927911, now seen corresponding path program 12 times [2024-06-27 18:45:41,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:41,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075533153] [2024-06-27 18:45:41,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:41,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:42,076 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 18:45:42,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:42,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075533153] [2024-06-27 18:45:42,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075533153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:42,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:42,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:42,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640541287] [2024-06-27 18:45:42,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:42,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:42,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:42,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:42,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:42,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:42,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 341 transitions, 5122 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:42,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:42,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:42,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:43,473 INFO L124 PetriNetUnfolderBase]: 2834/4871 cut-off events. [2024-06-27 18:45:43,473 INFO L125 PetriNetUnfolderBase]: For 308167/308167 co-relation queries the response was YES. [2024-06-27 18:45:43,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34155 conditions, 4871 events. 2834/4871 cut-off events. For 308167/308167 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 32937 event pairs, 585 based on Foata normal form. 10/4831 useless extension candidates. Maximal degree in co-relation 33992. Up to 4248 conditions per place. [2024-06-27 18:45:43,527 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 337 selfloop transitions, 42 changer transitions 0/385 dead transitions. [2024-06-27 18:45:43,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 385 transitions, 6254 flow [2024-06-27 18:45:43,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:43,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:43,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 183 transitions. [2024-06-27 18:45:43,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621212121212121 [2024-06-27 18:45:43,528 INFO L175 Difference]: Start difference. First operand has 328 places, 341 transitions, 5122 flow. Second operand 11 states and 183 transitions. [2024-06-27 18:45:43,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 385 transitions, 6254 flow [2024-06-27 18:45:44,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 385 transitions, 6011 flow, removed 82 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:44,881 INFO L231 Difference]: Finished difference. Result has 331 places, 342 transitions, 5118 flow [2024-06-27 18:45:44,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4879, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5118, PETRI_PLACES=331, PETRI_TRANSITIONS=342} [2024-06-27 18:45:44,882 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 291 predicate places. [2024-06-27 18:45:44,882 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 342 transitions, 5118 flow [2024-06-27 18:45:44,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:44,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:44,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:44,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 18:45:44,883 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:44,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:44,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1523739017, now seen corresponding path program 18 times [2024-06-27 18:45:44,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:44,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124271041] [2024-06-27 18:45:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:44,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:45,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:45,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124271041] [2024-06-27 18:45:45,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124271041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:45,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:45,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:45,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885642453] [2024-06-27 18:45:45,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:45,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:45,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:45,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:45,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 342 transitions, 5118 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:45,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:45,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:45,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:47,078 INFO L124 PetriNetUnfolderBase]: 2849/4896 cut-off events. [2024-06-27 18:45:47,078 INFO L125 PetriNetUnfolderBase]: For 255984/255984 co-relation queries the response was YES. [2024-06-27 18:45:47,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33783 conditions, 4896 events. 2849/4896 cut-off events. For 255984/255984 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 33216 event pairs, 521 based on Foata normal form. 2/4845 useless extension candidates. Maximal degree in co-relation 33619. Up to 4458 conditions per place. [2024-06-27 18:45:47,145 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 327 selfloop transitions, 46 changer transitions 0/379 dead transitions. [2024-06-27 18:45:47,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 379 transitions, 6216 flow [2024-06-27 18:45:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:47,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 159 transitions. [2024-06-27 18:45:47,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44166666666666665 [2024-06-27 18:45:47,148 INFO L175 Difference]: Start difference. First operand has 331 places, 342 transitions, 5118 flow. Second operand 10 states and 159 transitions. [2024-06-27 18:45:47,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 379 transitions, 6216 flow [2024-06-27 18:45:48,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 379 transitions, 6023 flow, removed 58 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:48,731 INFO L231 Difference]: Finished difference. Result has 332 places, 344 transitions, 5226 flow [2024-06-27 18:45:48,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4925, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5226, PETRI_PLACES=332, PETRI_TRANSITIONS=344} [2024-06-27 18:45:48,732 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 292 predicate places. [2024-06-27 18:45:48,732 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 344 transitions, 5226 flow [2024-06-27 18:45:48,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:48,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:48,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:48,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 18:45:48,732 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:48,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:48,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1518017161, now seen corresponding path program 13 times [2024-06-27 18:45:48,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:48,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301618171] [2024-06-27 18:45:48,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:48,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:48,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:49,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:49,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:49,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301618171] [2024-06-27 18:45:49,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301618171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:49,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:49,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:49,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441078919] [2024-06-27 18:45:49,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:49,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:49,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:49,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:49,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:49,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:49,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 344 transitions, 5226 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:49,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:49,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:49,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:51,164 INFO L124 PetriNetUnfolderBase]: 2914/5023 cut-off events. [2024-06-27 18:45:51,164 INFO L125 PetriNetUnfolderBase]: For 301764/301764 co-relation queries the response was YES. [2024-06-27 18:45:51,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34597 conditions, 5023 events. 2914/5023 cut-off events. For 301764/301764 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 34149 event pairs, 482 based on Foata normal form. 10/4976 useless extension candidates. Maximal degree in co-relation 34432. Up to 3419 conditions per place. [2024-06-27 18:45:51,234 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 270 selfloop transitions, 122 changer transitions 0/398 dead transitions. [2024-06-27 18:45:51,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 398 transitions, 6956 flow [2024-06-27 18:45:51,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:45:51,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:45:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 199 transitions. [2024-06-27 18:45:51,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-06-27 18:45:51,236 INFO L175 Difference]: Start difference. First operand has 332 places, 344 transitions, 5226 flow. Second operand 11 states and 199 transitions. [2024-06-27 18:45:51,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 398 transitions, 6956 flow [2024-06-27 18:45:52,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 398 transitions, 6671 flow, removed 98 selfloop flow, removed 8 redundant places. [2024-06-27 18:45:52,632 INFO L231 Difference]: Finished difference. Result has 335 places, 345 transitions, 5342 flow [2024-06-27 18:45:52,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4941, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5342, PETRI_PLACES=335, PETRI_TRANSITIONS=345} [2024-06-27 18:45:52,632 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 295 predicate places. [2024-06-27 18:45:52,632 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 345 transitions, 5342 flow [2024-06-27 18:45:52,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:52,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:52,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:52,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 18:45:52,633 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:52,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:52,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1741606351, now seen corresponding path program 14 times [2024-06-27 18:45:52,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:52,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376837004] [2024-06-27 18:45:52,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:52,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376837004] [2024-06-27 18:45:53,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376837004] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:53,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:53,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 18:45:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833170287] [2024-06-27 18:45:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 18:45:53,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 18:45:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 18:45:53,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:53,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 345 transitions, 5342 flow. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:53,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:53,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:53,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:54,641 INFO L124 PetriNetUnfolderBase]: 3045/5244 cut-off events. [2024-06-27 18:45:54,641 INFO L125 PetriNetUnfolderBase]: For 394591/394591 co-relation queries the response was YES. [2024-06-27 18:45:54,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38477 conditions, 5244 events. 3045/5244 cut-off events. For 394591/394591 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 36133 event pairs, 633 based on Foata normal form. 8/5202 useless extension candidates. Maximal degree in co-relation 38311. Up to 4335 conditions per place. [2024-06-27 18:45:54,715 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 341 selfloop transitions, 43 changer transitions 0/390 dead transitions. [2024-06-27 18:45:54,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 390 transitions, 6900 flow [2024-06-27 18:45:54,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:54,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 169 transitions. [2024-06-27 18:45:54,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46944444444444444 [2024-06-27 18:45:54,717 INFO L175 Difference]: Start difference. First operand has 335 places, 345 transitions, 5342 flow. Second operand 10 states and 169 transitions. [2024-06-27 18:45:54,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 390 transitions, 6900 flow [2024-06-27 18:45:56,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 390 transitions, 6541 flow, removed 60 selfloop flow, removed 9 redundant places. [2024-06-27 18:45:56,169 INFO L231 Difference]: Finished difference. Result has 336 places, 347 transitions, 5375 flow [2024-06-27 18:45:56,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4983, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5375, PETRI_PLACES=336, PETRI_TRANSITIONS=347} [2024-06-27 18:45:56,169 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 296 predicate places. [2024-06-27 18:45:56,170 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 347 transitions, 5375 flow [2024-06-27 18:45:56,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 11 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:56,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:56,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:56,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 18:45:56,170 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:56,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:56,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1324287497, now seen corresponding path program 19 times [2024-06-27 18:45:56,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:56,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241337816] [2024-06-27 18:45:56,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:56,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:56,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:45:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:45:56,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:45:56,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241337816] [2024-06-27 18:45:56,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241337816] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:45:56,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:45:56,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:45:56,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027511285] [2024-06-27 18:45:56,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:45:56,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:45:56,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:45:56,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:45:56,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:45:57,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:45:57,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 347 transitions, 5375 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:57,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:45:57,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:45:57,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:45:58,358 INFO L124 PetriNetUnfolderBase]: 3042/5239 cut-off events. [2024-06-27 18:45:58,358 INFO L125 PetriNetUnfolderBase]: For 337154/337154 co-relation queries the response was YES. [2024-06-27 18:45:58,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37241 conditions, 5239 events. 3042/5239 cut-off events. For 337154/337154 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 36282 event pairs, 665 based on Foata normal form. 2/5191 useless extension candidates. Maximal degree in co-relation 37074. Up to 4866 conditions per place. [2024-06-27 18:45:58,432 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 334 selfloop transitions, 43 changer transitions 0/383 dead transitions. [2024-06-27 18:45:58,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 383 transitions, 6491 flow [2024-06-27 18:45:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:45:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:45:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2024-06-27 18:45:58,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45555555555555555 [2024-06-27 18:45:58,433 INFO L175 Difference]: Start difference. First operand has 336 places, 347 transitions, 5375 flow. Second operand 10 states and 164 transitions. [2024-06-27 18:45:58,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 383 transitions, 6491 flow [2024-06-27 18:45:59,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 383 transitions, 6294 flow, removed 76 selfloop flow, removed 6 redundant places. [2024-06-27 18:45:59,967 INFO L231 Difference]: Finished difference. Result has 340 places, 349 transitions, 5481 flow [2024-06-27 18:45:59,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5188, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5481, PETRI_PLACES=340, PETRI_TRANSITIONS=349} [2024-06-27 18:45:59,968 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 300 predicate places. [2024-06-27 18:45:59,968 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 349 transitions, 5481 flow [2024-06-27 18:45:59,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:45:59,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:45:59,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:45:59,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 18:45:59,968 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:45:59,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:45:59,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1324293077, now seen corresponding path program 20 times [2024-06-27 18:45:59,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:45:59,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270232656] [2024-06-27 18:45:59,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:45:59,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:45:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:00,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:00,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270232656] [2024-06-27 18:46:00,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270232656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:00,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:00,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:00,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163562869] [2024-06-27 18:46:00,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:00,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:00,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:00,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:00,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:00,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:00,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 349 transitions, 5481 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:00,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:00,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:00,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:02,242 INFO L124 PetriNetUnfolderBase]: 3042/5239 cut-off events. [2024-06-27 18:46:02,242 INFO L125 PetriNetUnfolderBase]: For 312517/312517 co-relation queries the response was YES. [2024-06-27 18:46:02,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36839 conditions, 5239 events. 3042/5239 cut-off events. For 312517/312517 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 36234 event pairs, 660 based on Foata normal form. 2/5191 useless extension candidates. Maximal degree in co-relation 36670. Up to 4687 conditions per place. [2024-06-27 18:46:02,310 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 335 selfloop transitions, 48 changer transitions 0/389 dead transitions. [2024-06-27 18:46:02,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 389 transitions, 6661 flow [2024-06-27 18:46:02,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:02,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:02,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:46:02,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:46:02,311 INFO L175 Difference]: Start difference. First operand has 340 places, 349 transitions, 5481 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:46:02,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 389 transitions, 6661 flow [2024-06-27 18:46:03,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 389 transitions, 6386 flow, removed 96 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:03,886 INFO L231 Difference]: Finished difference. Result has 342 places, 351 transitions, 5521 flow [2024-06-27 18:46:03,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5206, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5521, PETRI_PLACES=342, PETRI_TRANSITIONS=351} [2024-06-27 18:46:03,887 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 302 predicate places. [2024-06-27 18:46:03,887 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 351 transitions, 5521 flow [2024-06-27 18:46:03,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:03,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:03,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:03,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 18:46:03,887 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:03,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1749024961, now seen corresponding path program 15 times [2024-06-27 18:46:03,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:03,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207876312] [2024-06-27 18:46:03,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:03,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:04,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:04,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:04,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207876312] [2024-06-27 18:46:04,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207876312] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:04,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:04,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:04,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925813229] [2024-06-27 18:46:04,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:04,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:04,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:04,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:04,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:04,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:04,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 351 transitions, 5521 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:04,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:04,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:04,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:06,207 INFO L124 PetriNetUnfolderBase]: 3029/5216 cut-off events. [2024-06-27 18:46:06,207 INFO L125 PetriNetUnfolderBase]: For 299527/299527 co-relation queries the response was YES. [2024-06-27 18:46:06,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35479 conditions, 5216 events. 3029/5216 cut-off events. For 299527/299527 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 35978 event pairs, 649 based on Foata normal form. 10/5176 useless extension candidates. Maximal degree in co-relation 35309. Up to 4713 conditions per place. [2024-06-27 18:46:06,274 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 345 selfloop transitions, 43 changer transitions 0/394 dead transitions. [2024-06-27 18:46:06,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 394 transitions, 6527 flow [2024-06-27 18:46:06,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:06,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:46:06,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-27 18:46:06,276 INFO L175 Difference]: Start difference. First operand has 342 places, 351 transitions, 5521 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:46:06,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 394 transitions, 6527 flow [2024-06-27 18:46:07,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 394 transitions, 6120 flow, removed 157 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:07,771 INFO L231 Difference]: Finished difference. Result has 345 places, 351 transitions, 5207 flow [2024-06-27 18:46:07,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5114, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5207, PETRI_PLACES=345, PETRI_TRANSITIONS=351} [2024-06-27 18:46:07,771 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 305 predicate places. [2024-06-27 18:46:07,771 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 351 transitions, 5207 flow [2024-06-27 18:46:07,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:07,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:07,772 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 18:46:07,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 18:46:07,772 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:07,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:07,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1891621724, now seen corresponding path program 1 times [2024-06-27 18:46:07,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:07,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469541918] [2024-06-27 18:46:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:09,123 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 18:46:09,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:09,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469541918] [2024-06-27 18:46:09,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469541918] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:09,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984631397] [2024-06-27 18:46:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:09,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:09,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:09,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:09,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:09,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:09,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 351 transitions, 5207 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:09,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:09,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:09,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:10,677 INFO L124 PetriNetUnfolderBase]: 3064/5292 cut-off events. [2024-06-27 18:46:10,677 INFO L125 PetriNetUnfolderBase]: For 263426/263426 co-relation queries the response was YES. [2024-06-27 18:46:10,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35221 conditions, 5292 events. 3064/5292 cut-off events. For 263426/263426 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 36314 event pairs, 939 based on Foata normal form. 6/5246 useless extension candidates. Maximal degree in co-relation 35050. Up to 4857 conditions per place. [2024-06-27 18:46:10,750 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 353 selfloop transitions, 36 changer transitions 0/395 dead transitions. [2024-06-27 18:46:10,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 395 transitions, 6309 flow [2024-06-27 18:46:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:10,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:46:10,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-27 18:46:10,751 INFO L175 Difference]: Start difference. First operand has 345 places, 351 transitions, 5207 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:46:10,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 395 transitions, 6309 flow [2024-06-27 18:46:12,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 395 transitions, 6207 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 18:46:12,358 INFO L231 Difference]: Finished difference. Result has 346 places, 352 transitions, 5337 flow [2024-06-27 18:46:12,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5105, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5337, PETRI_PLACES=346, PETRI_TRANSITIONS=352} [2024-06-27 18:46:12,358 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 306 predicate places. [2024-06-27 18:46:12,359 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 352 transitions, 5337 flow [2024-06-27 18:46:12,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:12,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:12,359 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 18:46:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 18:46:12,359 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:12,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1445493886, now seen corresponding path program 2 times [2024-06-27 18:46:12,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121249241] [2024-06-27 18:46:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:13,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:13,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121249241] [2024-06-27 18:46:13,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121249241] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:13,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:13,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:13,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149912105] [2024-06-27 18:46:13,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:13,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:13,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:13,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:13,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:13,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:13,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 352 transitions, 5337 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:13,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:13,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:13,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:15,031 INFO L124 PetriNetUnfolderBase]: 3107/5370 cut-off events. [2024-06-27 18:46:15,031 INFO L125 PetriNetUnfolderBase]: For 284734/284734 co-relation queries the response was YES. [2024-06-27 18:46:15,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35923 conditions, 5370 events. 3107/5370 cut-off events. For 284734/284734 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 37361 event pairs, 952 based on Foata normal form. 6/5324 useless extension candidates. Maximal degree in co-relation 35751. Up to 4836 conditions per place. [2024-06-27 18:46:15,111 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 345 selfloop transitions, 53 changer transitions 0/404 dead transitions. [2024-06-27 18:46:15,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 404 transitions, 6533 flow [2024-06-27 18:46:15,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:15,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 182 transitions. [2024-06-27 18:46:15,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-06-27 18:46:15,112 INFO L175 Difference]: Start difference. First operand has 346 places, 352 transitions, 5337 flow. Second operand 11 states and 182 transitions. [2024-06-27 18:46:15,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 404 transitions, 6533 flow [2024-06-27 18:46:16,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 404 transitions, 6352 flow, removed 69 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:16,850 INFO L231 Difference]: Finished difference. Result has 353 places, 360 transitions, 5521 flow [2024-06-27 18:46:16,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5156, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5521, PETRI_PLACES=353, PETRI_TRANSITIONS=360} [2024-06-27 18:46:16,850 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 313 predicate places. [2024-06-27 18:46:16,850 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 360 transitions, 5521 flow [2024-06-27 18:46:16,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:16,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:16,851 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 18:46:16,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 18:46:16,851 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:16,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:16,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1445320906, now seen corresponding path program 3 times [2024-06-27 18:46:16,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:16,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971474229] [2024-06-27 18:46:16,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:16,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:18,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:18,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:18,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971474229] [2024-06-27 18:46:18,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971474229] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:18,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:18,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:18,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640005822] [2024-06-27 18:46:18,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:18,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:18,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:18,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:18,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:18,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 360 transitions, 5521 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:18,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:18,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:18,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:19,988 INFO L124 PetriNetUnfolderBase]: 3177/5500 cut-off events. [2024-06-27 18:46:19,988 INFO L125 PetriNetUnfolderBase]: For 291857/291857 co-relation queries the response was YES. [2024-06-27 18:46:20,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36838 conditions, 5500 events. 3177/5500 cut-off events. For 291857/291857 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 38519 event pairs, 981 based on Foata normal form. 6/5454 useless extension candidates. Maximal degree in co-relation 36662. Up to 4928 conditions per place. [2024-06-27 18:46:20,065 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 341 selfloop transitions, 59 changer transitions 0/406 dead transitions. [2024-06-27 18:46:20,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 406 transitions, 6699 flow [2024-06-27 18:46:20,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:20,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:46:20,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-27 18:46:20,066 INFO L175 Difference]: Start difference. First operand has 353 places, 360 transitions, 5521 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:46:20,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 406 transitions, 6699 flow [2024-06-27 18:46:21,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 406 transitions, 6493 flow, removed 71 selfloop flow, removed 5 redundant places. [2024-06-27 18:46:21,903 INFO L231 Difference]: Finished difference. Result has 359 places, 362 transitions, 5633 flow [2024-06-27 18:46:21,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5315, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5633, PETRI_PLACES=359, PETRI_TRANSITIONS=362} [2024-06-27 18:46:21,904 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 319 predicate places. [2024-06-27 18:46:21,904 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 362 transitions, 5633 flow [2024-06-27 18:46:21,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:21,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:21,904 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 18:46:21,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 18:46:21,904 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:21,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1445314148, now seen corresponding path program 1 times [2024-06-27 18:46:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:21,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618985979] [2024-06-27 18:46:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:21,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:23,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:23,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:23,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618985979] [2024-06-27 18:46:23,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618985979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:23,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:23,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:23,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846115280] [2024-06-27 18:46:23,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:23,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:23,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:23,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 362 transitions, 5633 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:23,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:23,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:23,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:24,682 INFO L124 PetriNetUnfolderBase]: 3215/5570 cut-off events. [2024-06-27 18:46:24,682 INFO L125 PetriNetUnfolderBase]: For 310265/310265 co-relation queries the response was YES. [2024-06-27 18:46:24,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37418 conditions, 5570 events. 3215/5570 cut-off events. For 310265/310265 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 39111 event pairs, 1012 based on Foata normal form. 8/5526 useless extension candidates. Maximal degree in co-relation 37241. Up to 4887 conditions per place. [2024-06-27 18:46:24,759 INFO L140 encePairwiseOnDemand]: 24/36 looper letters, 336 selfloop transitions, 62 changer transitions 0/404 dead transitions. [2024-06-27 18:46:24,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 404 transitions, 6787 flow [2024-06-27 18:46:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:46:24,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:46:24,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 168 transitions. [2024-06-27 18:46:24,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2024-06-27 18:46:24,761 INFO L175 Difference]: Start difference. First operand has 359 places, 362 transitions, 5633 flow. Second operand 10 states and 168 transitions. [2024-06-27 18:46:24,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 404 transitions, 6787 flow [2024-06-27 18:46:26,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 404 transitions, 6519 flow, removed 77 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:26,672 INFO L231 Difference]: Finished difference. Result has 360 places, 363 transitions, 5667 flow [2024-06-27 18:46:26,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5365, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5667, PETRI_PLACES=360, PETRI_TRANSITIONS=363} [2024-06-27 18:46:26,673 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 320 predicate places. [2024-06-27 18:46:26,673 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 363 transitions, 5667 flow [2024-06-27 18:46:26,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:26,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:26,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:26,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 18:46:26,674 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:26,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1748122212, now seen corresponding path program 4 times [2024-06-27 18:46:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:26,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481128122] [2024-06-27 18:46:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:27,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:27,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481128122] [2024-06-27 18:46:27,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481128122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:27,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:27,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:27,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678295156] [2024-06-27 18:46:27,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:27,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:27,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:27,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:27,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:27,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:27,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 363 transitions, 5667 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:27,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:27,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:27,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:29,499 INFO L124 PetriNetUnfolderBase]: 3250/5635 cut-off events. [2024-06-27 18:46:29,500 INFO L125 PetriNetUnfolderBase]: For 306136/306136 co-relation queries the response was YES. [2024-06-27 18:46:29,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37823 conditions, 5635 events. 3250/5635 cut-off events. For 306136/306136 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 39774 event pairs, 1040 based on Foata normal form. 6/5589 useless extension candidates. Maximal degree in co-relation 37645. Up to 5177 conditions per place. [2024-06-27 18:46:29,579 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 362 selfloop transitions, 40 changer transitions 0/408 dead transitions. [2024-06-27 18:46:29,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 408 transitions, 6817 flow [2024-06-27 18:46:29,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:29,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 176 transitions. [2024-06-27 18:46:29,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-06-27 18:46:29,581 INFO L175 Difference]: Start difference. First operand has 360 places, 363 transitions, 5667 flow. Second operand 11 states and 176 transitions. [2024-06-27 18:46:29,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 408 transitions, 6817 flow [2024-06-27 18:46:31,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 408 transitions, 6577 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-27 18:46:31,047 INFO L231 Difference]: Finished difference. Result has 363 places, 364 transitions, 5675 flow [2024-06-27 18:46:31,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5427, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5675, PETRI_PLACES=363, PETRI_TRANSITIONS=364} [2024-06-27 18:46:31,047 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 323 predicate places. [2024-06-27 18:46:31,047 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 364 transitions, 5675 flow [2024-06-27 18:46:31,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:31,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:31,048 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 18:46:31,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 18:46:31,048 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:31,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1195837202, now seen corresponding path program 5 times [2024-06-27 18:46:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:31,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599129181] [2024-06-27 18:46:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:31,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:32,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:32,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:32,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599129181] [2024-06-27 18:46:32,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599129181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:32,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:32,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:32,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6914660] [2024-06-27 18:46:32,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:32,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:32,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:32,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:32,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:32,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:32,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 364 transitions, 5675 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:32,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:32,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:32,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:33,891 INFO L124 PetriNetUnfolderBase]: 3285/5700 cut-off events. [2024-06-27 18:46:33,891 INFO L125 PetriNetUnfolderBase]: For 300334/300334 co-relation queries the response was YES. [2024-06-27 18:46:33,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37911 conditions, 5700 events. 3285/5700 cut-off events. For 300334/300334 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 40276 event pairs, 1033 based on Foata normal form. 6/5653 useless extension candidates. Maximal degree in co-relation 37732. Up to 5179 conditions per place. [2024-06-27 18:46:33,974 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 355 selfloop transitions, 47 changer transitions 0/408 dead transitions. [2024-06-27 18:46:33,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 408 transitions, 6833 flow [2024-06-27 18:46:33,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:33,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:33,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 180 transitions. [2024-06-27 18:46:33,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2024-06-27 18:46:33,975 INFO L175 Difference]: Start difference. First operand has 363 places, 364 transitions, 5675 flow. Second operand 11 states and 180 transitions. [2024-06-27 18:46:33,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 408 transitions, 6833 flow [2024-06-27 18:46:35,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 408 transitions, 6609 flow, removed 73 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:35,680 INFO L231 Difference]: Finished difference. Result has 365 places, 365 transitions, 5715 flow [2024-06-27 18:46:35,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5451, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5715, PETRI_PLACES=365, PETRI_TRANSITIONS=365} [2024-06-27 18:46:35,680 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 325 predicate places. [2024-06-27 18:46:35,680 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 365 transitions, 5715 flow [2024-06-27 18:46:35,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:35,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:35,681 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 18:46:35,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 18:46:35,681 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:35,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:35,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1200305852, now seen corresponding path program 6 times [2024-06-27 18:46:35,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:35,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345429885] [2024-06-27 18:46:35,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:35,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:36,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:36,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345429885] [2024-06-27 18:46:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345429885] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:36,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:36,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:36,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469743920] [2024-06-27 18:46:36,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:36,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:36,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:36,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:36,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:36,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:36,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 365 transitions, 5715 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:36,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:36,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:36,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:38,549 INFO L124 PetriNetUnfolderBase]: 3996/6942 cut-off events. [2024-06-27 18:46:38,549 INFO L125 PetriNetUnfolderBase]: For 402576/402576 co-relation queries the response was YES. [2024-06-27 18:46:38,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48447 conditions, 6942 events. 3996/6942 cut-off events. For 402576/402576 co-relation queries the response was YES. Maximal size of possible extension queue 471. Compared 50338 event pairs, 1231 based on Foata normal form. 6/6864 useless extension candidates. Maximal degree in co-relation 48267. Up to 5616 conditions per place. [2024-06-27 18:46:38,654 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 442 selfloop transitions, 88 changer transitions 0/536 dead transitions. [2024-06-27 18:46:38,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 536 transitions, 9771 flow [2024-06-27 18:46:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:38,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 207 transitions. [2024-06-27 18:46:38,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:46:38,655 INFO L175 Difference]: Start difference. First operand has 365 places, 365 transitions, 5715 flow. Second operand 12 states and 207 transitions. [2024-06-27 18:46:38,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 536 transitions, 9771 flow [2024-06-27 18:46:40,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 536 transitions, 9473 flow, removed 74 selfloop flow, removed 9 redundant places. [2024-06-27 18:46:40,758 INFO L231 Difference]: Finished difference. Result has 374 places, 430 transitions, 7311 flow [2024-06-27 18:46:40,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5475, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7311, PETRI_PLACES=374, PETRI_TRANSITIONS=430} [2024-06-27 18:46:40,759 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 334 predicate places. [2024-06-27 18:46:40,759 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 430 transitions, 7311 flow [2024-06-27 18:46:40,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:40,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:40,759 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 18:46:40,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 18:46:40,759 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:40,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:40,760 INFO L85 PathProgramCache]: Analyzing trace with hash 162446254, now seen corresponding path program 7 times [2024-06-27 18:46:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:40,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462346345] [2024-06-27 18:46:40,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:40,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:41,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:41,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:41,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462346345] [2024-06-27 18:46:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462346345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:41,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:41,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495049650] [2024-06-27 18:46:41,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:41,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:41,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:41,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:41,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 430 transitions, 7311 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:41,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:41,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:41,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:43,684 INFO L124 PetriNetUnfolderBase]: 4201/7282 cut-off events. [2024-06-27 18:46:43,684 INFO L125 PetriNetUnfolderBase]: For 417901/417901 co-relation queries the response was YES. [2024-06-27 18:46:43,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51768 conditions, 7282 events. 4201/7282 cut-off events. For 417901/417901 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 53124 event pairs, 1580 based on Foata normal form. 6/7207 useless extension candidates. Maximal degree in co-relation 51581. Up to 6371 conditions per place. [2024-06-27 18:46:43,794 INFO L140 encePairwiseOnDemand]: 21/36 looper letters, 443 selfloop transitions, 67 changer transitions 0/516 dead transitions. [2024-06-27 18:46:43,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 516 transitions, 9295 flow [2024-06-27 18:46:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:43,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:43,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 200 transitions. [2024-06-27 18:46:43,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-06-27 18:46:43,795 INFO L175 Difference]: Start difference. First operand has 374 places, 430 transitions, 7311 flow. Second operand 12 states and 200 transitions. [2024-06-27 18:46:43,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 516 transitions, 9295 flow [2024-06-27 18:46:46,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 516 transitions, 9066 flow, removed 85 selfloop flow, removed 2 redundant places. [2024-06-27 18:46:46,528 INFO L231 Difference]: Finished difference. Result has 390 places, 465 transitions, 8057 flow [2024-06-27 18:46:46,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7090, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8057, PETRI_PLACES=390, PETRI_TRANSITIONS=465} [2024-06-27 18:46:46,529 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 350 predicate places. [2024-06-27 18:46:46,529 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 465 transitions, 8057 flow [2024-06-27 18:46:46,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:46,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:46,529 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 18:46:46,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 18:46:46,529 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:46,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:46,530 INFO L85 PathProgramCache]: Analyzing trace with hash -876788118, now seen corresponding path program 8 times [2024-06-27 18:46:46,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:46,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540201393] [2024-06-27 18:46:46,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:46,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:47,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:46:47,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540201393] [2024-06-27 18:46:47,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540201393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:47,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:47,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:46:47,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320065268] [2024-06-27 18:46:47,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:46:47,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:46:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:46:47,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:47,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 465 transitions, 8057 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:47,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:47,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:47,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:49,781 INFO L124 PetriNetUnfolderBase]: 4310/7472 cut-off events. [2024-06-27 18:46:49,781 INFO L125 PetriNetUnfolderBase]: For 428249/428249 co-relation queries the response was YES. [2024-06-27 18:46:49,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53589 conditions, 7472 events. 4310/7472 cut-off events. For 428249/428249 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 54819 event pairs, 1518 based on Foata normal form. 6/7396 useless extension candidates. Maximal degree in co-relation 53394. Up to 6783 conditions per place. [2024-06-27 18:46:49,897 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 457 selfloop transitions, 69 changer transitions 0/532 dead transitions. [2024-06-27 18:46:49,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 532 transitions, 9805 flow [2024-06-27 18:46:49,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 18:46:49,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 18:46:49,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2024-06-27 18:46:49,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44675925925925924 [2024-06-27 18:46:49,898 INFO L175 Difference]: Start difference. First operand has 390 places, 465 transitions, 8057 flow. Second operand 12 states and 193 transitions. [2024-06-27 18:46:49,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 532 transitions, 9805 flow [2024-06-27 18:46:52,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 532 transitions, 9596 flow, removed 77 selfloop flow, removed 4 redundant places. [2024-06-27 18:46:52,589 INFO L231 Difference]: Finished difference. Result has 403 places, 482 transitions, 8548 flow [2024-06-27 18:46:52,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7848, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8548, PETRI_PLACES=403, PETRI_TRANSITIONS=482} [2024-06-27 18:46:52,590 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 363 predicate places. [2024-06-27 18:46:52,590 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 482 transitions, 8548 flow [2024-06-27 18:46:52,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:52,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:52,590 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:46:52,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 18:46:52,590 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:52,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:52,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1311522044, now seen corresponding path program 9 times [2024-06-27 18:46:52,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:52,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836470647] [2024-06-27 18:46:52,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:52,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:46:53,610 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 18:46:53,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:46:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836470647] [2024-06-27 18:46:53,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836470647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:46:53,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:46:53,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 18:46:53,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475768589] [2024-06-27 18:46:53,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:46:53,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 18:46:53,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:46:53,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 18:46:53,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 18:46:53,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:46:53,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 482 transitions, 8548 flow. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:53,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:46:53,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:46:53,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:46:55,926 INFO L124 PetriNetUnfolderBase]: 4345/7510 cut-off events. [2024-06-27 18:46:55,926 INFO L125 PetriNetUnfolderBase]: For 438948/438948 co-relation queries the response was YES. [2024-06-27 18:46:56,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54265 conditions, 7510 events. 4345/7510 cut-off events. For 438948/438948 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 55209 event pairs, 1488 based on Foata normal form. 6/7445 useless extension candidates. Maximal degree in co-relation 54064. Up to 6205 conditions per place. [2024-06-27 18:46:56,065 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 424 selfloop transitions, 98 changer transitions 0/528 dead transitions. [2024-06-27 18:46:56,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 528 transitions, 9998 flow [2024-06-27 18:46:56,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:46:56,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:46:56,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 185 transitions. [2024-06-27 18:46:56,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671717171717172 [2024-06-27 18:46:56,066 INFO L175 Difference]: Start difference. First operand has 403 places, 482 transitions, 8548 flow. Second operand 11 states and 185 transitions. [2024-06-27 18:46:56,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 528 transitions, 9998 flow [2024-06-27 18:46:59,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 528 transitions, 9744 flow, removed 78 selfloop flow, removed 7 redundant places. [2024-06-27 18:46:59,338 INFO L231 Difference]: Finished difference. Result has 407 places, 483 transitions, 8671 flow [2024-06-27 18:46:59,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8294, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8671, PETRI_PLACES=407, PETRI_TRANSITIONS=483} [2024-06-27 18:46:59,338 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 367 predicate places. [2024-06-27 18:46:59,338 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 483 transitions, 8671 flow [2024-06-27 18:46:59,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 12 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:46:59,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:46:59,338 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 18:46:59,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 18:46:59,339 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:46:59,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:46:59,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1896588580, now seen corresponding path program 10 times [2024-06-27 18:46:59,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:46:59,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746246997] [2024-06-27 18:46:59,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:46:59,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:46:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:00,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:00,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746246997] [2024-06-27 18:47:00,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746246997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:00,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:00,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:00,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876274516] [2024-06-27 18:47:00,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:00,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:00,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:00,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:00,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:00,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:47:00,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 483 transitions, 8671 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:00,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:00,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:47:00,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:02,910 INFO L124 PetriNetUnfolderBase]: 4380/7605 cut-off events. [2024-06-27 18:47:02,911 INFO L125 PetriNetUnfolderBase]: For 447908/447908 co-relation queries the response was YES. [2024-06-27 18:47:02,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54999 conditions, 7605 events. 4380/7605 cut-off events. For 447908/447908 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 56191 event pairs, 1261 based on Foata normal form. 6/7529 useless extension candidates. Maximal degree in co-relation 54797. Up to 6870 conditions per place. [2024-06-27 18:47:03,021 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 468 selfloop transitions, 54 changer transitions 0/528 dead transitions. [2024-06-27 18:47:03,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 528 transitions, 10129 flow [2024-06-27 18:47:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 184 transitions. [2024-06-27 18:47:03,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2024-06-27 18:47:03,022 INFO L175 Difference]: Start difference. First operand has 407 places, 483 transitions, 8671 flow. Second operand 11 states and 184 transitions. [2024-06-27 18:47:03,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 528 transitions, 10129 flow [2024-06-27 18:47:06,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 528 transitions, 9778 flow, removed 80 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:06,204 INFO L231 Difference]: Finished difference. Result has 409 places, 484 transitions, 8608 flow [2024-06-27 18:47:06,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8322, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8608, PETRI_PLACES=409, PETRI_TRANSITIONS=484} [2024-06-27 18:47:06,204 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 369 predicate places. [2024-06-27 18:47:06,205 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 484 transitions, 8608 flow [2024-06-27 18:47:06,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:06,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:06,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:06,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 18:47:06,205 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:06,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:06,205 INFO L85 PathProgramCache]: Analyzing trace with hash -275261236, now seen corresponding path program 11 times [2024-06-27 18:47:06,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:06,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066975618] [2024-06-27 18:47:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:07,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:07,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066975618] [2024-06-27 18:47:07,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066975618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:07,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:07,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:07,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015687744] [2024-06-27 18:47:07,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:07,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:07,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:07,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:07,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:07,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:47:07,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 484 transitions, 8608 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:07,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:07,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:47:07,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:09,757 INFO L124 PetriNetUnfolderBase]: 4415/7667 cut-off events. [2024-06-27 18:47:09,757 INFO L125 PetriNetUnfolderBase]: For 446215/446215 co-relation queries the response was YES. [2024-06-27 18:47:09,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55040 conditions, 7667 events. 4415/7667 cut-off events. For 446215/446215 co-relation queries the response was YES. Maximal size of possible extension queue 535. Compared 56707 event pairs, 895 based on Foata normal form. 6/7588 useless extension candidates. Maximal degree in co-relation 54837. Up to 6916 conditions per place. [2024-06-27 18:47:09,883 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 443 selfloop transitions, 78 changer transitions 0/527 dead transitions. [2024-06-27 18:47:09,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 527 transitions, 10020 flow [2024-06-27 18:47:09,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:09,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:09,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 179 transitions. [2024-06-27 18:47:09,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45202020202020204 [2024-06-27 18:47:09,885 INFO L175 Difference]: Start difference. First operand has 409 places, 484 transitions, 8608 flow. Second operand 11 states and 179 transitions. [2024-06-27 18:47:09,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 527 transitions, 10020 flow [2024-06-27 18:47:13,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 527 transitions, 9758 flow, removed 78 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:13,356 INFO L231 Difference]: Finished difference. Result has 411 places, 485 transitions, 8682 flow [2024-06-27 18:47:13,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8346, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8682, PETRI_PLACES=411, PETRI_TRANSITIONS=485} [2024-06-27 18:47:13,357 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 371 predicate places. [2024-06-27 18:47:13,357 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 485 transitions, 8682 flow [2024-06-27 18:47:13,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:13,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:13,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:13,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 18:47:13,357 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:13,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:13,358 INFO L85 PathProgramCache]: Analyzing trace with hash 8731736, now seen corresponding path program 12 times [2024-06-27 18:47:13,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:13,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364759150] [2024-06-27 18:47:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:13,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:14,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:14,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364759150] [2024-06-27 18:47:14,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364759150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:14,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:14,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:14,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993902386] [2024-06-27 18:47:14,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:14,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:14,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:14,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:14,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:47:14,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 485 transitions, 8682 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:14,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:14,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:47:14,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:16,835 INFO L124 PetriNetUnfolderBase]: 4450/7732 cut-off events. [2024-06-27 18:47:16,835 INFO L125 PetriNetUnfolderBase]: For 456085/456085 co-relation queries the response was YES. [2024-06-27 18:47:16,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55508 conditions, 7732 events. 4450/7732 cut-off events. For 456085/456085 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 57334 event pairs, 905 based on Foata normal form. 6/7653 useless extension candidates. Maximal degree in co-relation 55304. Up to 7022 conditions per place. [2024-06-27 18:47:16,939 INFO L140 encePairwiseOnDemand]: 25/36 looper letters, 450 selfloop transitions, 72 changer transitions 0/528 dead transitions. [2024-06-27 18:47:16,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 528 transitions, 10096 flow [2024-06-27 18:47:16,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 175 transitions. [2024-06-27 18:47:16,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2024-06-27 18:47:16,940 INFO L175 Difference]: Start difference. First operand has 411 places, 485 transitions, 8682 flow. Second operand 11 states and 175 transitions. [2024-06-27 18:47:16,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 528 transitions, 10096 flow [2024-06-27 18:47:19,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 528 transitions, 9784 flow, removed 79 selfloop flow, removed 9 redundant places. [2024-06-27 18:47:20,000 INFO L231 Difference]: Finished difference. Result has 413 places, 486 transitions, 8696 flow [2024-06-27 18:47:20,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=8370, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8696, PETRI_PLACES=413, PETRI_TRANSITIONS=486} [2024-06-27 18:47:20,001 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 373 predicate places. [2024-06-27 18:47:20,001 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 486 transitions, 8696 flow [2024-06-27 18:47:20,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:20,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:20,002 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 18:47:20,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 18:47:20,002 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:20,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:20,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2026966512, now seen corresponding path program 13 times [2024-06-27 18:47:20,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:20,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979968872] [2024-06-27 18:47:20,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:20,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:20,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:21,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:21,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:21,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979968872] [2024-06-27 18:47:21,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979968872] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:21,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:21,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 18:47:21,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255466847] [2024-06-27 18:47:21,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:21,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:21,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:21,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:21,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:21,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 36 [2024-06-27 18:47:21,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 486 transitions, 8696 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:21,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:21,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 36 [2024-06-27 18:47:21,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:23,971 INFO L124 PetriNetUnfolderBase]: 4450/7717 cut-off events. [2024-06-27 18:47:23,972 INFO L125 PetriNetUnfolderBase]: For 428459/428459 co-relation queries the response was YES. [2024-06-27 18:47:24,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54928 conditions, 7717 events. 4450/7717 cut-off events. For 428459/428459 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 57279 event pairs, 1225 based on Foata normal form. 6/7647 useless extension candidates. Maximal degree in co-relation 54723. Up to 6219 conditions per place. [2024-06-27 18:47:24,092 INFO L140 encePairwiseOnDemand]: 23/36 looper letters, 391 selfloop transitions, 134 changer transitions 0/531 dead transitions. [2024-06-27 18:47:24,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 531 transitions, 9940 flow [2024-06-27 18:47:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 18:47:24,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 18:47:24,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 189 transitions. [2024-06-27 18:47:24,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-06-27 18:47:24,093 INFO L175 Difference]: Start difference. First operand has 413 places, 486 transitions, 8696 flow. Second operand 11 states and 189 transitions. [2024-06-27 18:47:24,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 531 transitions, 9940 flow [2024-06-27 18:47:26,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 531 transitions, 9053 flow, removed 250 selfloop flow, removed 42 redundant places. [2024-06-27 18:47:26,354 INFO L231 Difference]: Finished difference. Result has 381 places, 486 transitions, 8045 flow [2024-06-27 18:47:26,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=7621, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=8045, PETRI_PLACES=381, PETRI_TRANSITIONS=486} [2024-06-27 18:47:26,355 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 341 predicate places. [2024-06-27 18:47:26,355 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 486 transitions, 8045 flow [2024-06-27 18:47:26,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:26,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:26,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:26,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 18:47:26,356 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:26,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash -134341309, now seen corresponding path program 1 times [2024-06-27 18:47:26,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:26,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306961184] [2024-06-27 18:47:26,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:26,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:26,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:26,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:26,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306961184] [2024-06-27 18:47:26,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306961184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:26,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:26,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 18:47:26,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288538509] [2024-06-27 18:47:26,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:26,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 18:47:26,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:26,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 18:47:26,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-27 18:47:26,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-06-27 18:47:26,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 486 transitions, 8045 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 18:47:26,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:26,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-06-27 18:47:26,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:27,895 INFO L124 PetriNetUnfolderBase]: 3402/6496 cut-off events. [2024-06-27 18:47:27,896 INFO L125 PetriNetUnfolderBase]: For 150830/151031 co-relation queries the response was YES. [2024-06-27 18:47:27,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34495 conditions, 6496 events. 3402/6496 cut-off events. For 150830/151031 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 51912 event pairs, 605 based on Foata normal form. 629/7002 useless extension candidates. Maximal degree in co-relation 34323. Up to 3195 conditions per place. [2024-06-27 18:47:27,976 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 225 selfloop transitions, 98 changer transitions 0/395 dead transitions. [2024-06-27 18:47:27,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 395 transitions, 6710 flow [2024-06-27 18:47:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 18:47:27,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 18:47:27,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-06-27 18:47:27,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-06-27 18:47:27,977 INFO L175 Difference]: Start difference. First operand has 381 places, 486 transitions, 8045 flow. Second operand 4 states and 96 transitions. [2024-06-27 18:47:27,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 395 transitions, 6710 flow [2024-06-27 18:47:28,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 395 transitions, 5187 flow, removed 99 selfloop flow, removed 69 redundant places. [2024-06-27 18:47:28,541 INFO L231 Difference]: Finished difference. Result has 317 places, 351 transitions, 4605 flow [2024-06-27 18:47:28,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4207, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4605, PETRI_PLACES=317, PETRI_TRANSITIONS=351} [2024-06-27 18:47:28,542 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 277 predicate places. [2024-06-27 18:47:28,542 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 351 transitions, 4605 flow [2024-06-27 18:47:28,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 18:47:28,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:28,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:28,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 18:47:28,543 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:28,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:28,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1605600512, now seen corresponding path program 1 times [2024-06-27 18:47:28,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:28,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162306746] [2024-06-27 18:47:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:28,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:28,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:28,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162306746] [2024-06-27 18:47:28,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162306746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:28,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:28,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 18:47:28,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345045471] [2024-06-27 18:47:28,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:28,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 18:47:28,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:28,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 18:47:28,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 18:47:28,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 36 [2024-06-27 18:47:28,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 351 transitions, 4605 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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 18:47:28,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:28,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 36 [2024-06-27 18:47:28,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:29,559 INFO L124 PetriNetUnfolderBase]: 2435/5113 cut-off events. [2024-06-27 18:47:29,559 INFO L125 PetriNetUnfolderBase]: For 33081/33139 co-relation queries the response was YES. [2024-06-27 18:47:29,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24041 conditions, 5113 events. 2435/5113 cut-off events. For 33081/33139 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 42876 event pairs, 522 based on Foata normal form. 399/5410 useless extension candidates. Maximal degree in co-relation 23900. Up to 1848 conditions per place. [2024-06-27 18:47:29,607 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 142 selfloop transitions, 100 changer transitions 1/312 dead transitions. [2024-06-27 18:47:29,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 312 transitions, 4581 flow [2024-06-27 18:47:29,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 18:47:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 18:47:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2024-06-27 18:47:29,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-06-27 18:47:29,608 INFO L175 Difference]: Start difference. First operand has 317 places, 351 transitions, 4605 flow. Second operand 5 states and 108 transitions. [2024-06-27 18:47:29,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 312 transitions, 4581 flow [2024-06-27 18:47:29,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 312 transitions, 3065 flow, removed 268 selfloop flow, removed 85 redundant places. [2024-06-27 18:47:29,767 INFO L231 Difference]: Finished difference. Result has 238 places, 302 transitions, 2858 flow [2024-06-27 18:47:29,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2553, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2858, PETRI_PLACES=238, PETRI_TRANSITIONS=302} [2024-06-27 18:47:29,768 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 198 predicate places. [2024-06-27 18:47:29,768 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 302 transitions, 2858 flow [2024-06-27 18:47:29,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 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 18:47:29,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:29,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:29,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 18:47:29,768 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:29,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1017644542, now seen corresponding path program 1 times [2024-06-27 18:47:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:29,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791106187] [2024-06-27 18:47:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:29,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791106187] [2024-06-27 18:47:29,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791106187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:29,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:29,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 18:47:29,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68043019] [2024-06-27 18:47:29,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:29,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 18:47:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 18:47:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-06-27 18:47:29,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 36 [2024-06-27 18:47:29,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 302 transitions, 2858 flow. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:29,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:29,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 36 [2024-06-27 18:47:29,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:30,520 INFO L124 PetriNetUnfolderBase]: 1930/4269 cut-off events. [2024-06-27 18:47:30,521 INFO L125 PetriNetUnfolderBase]: For 14165/14179 co-relation queries the response was YES. [2024-06-27 18:47:30,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16609 conditions, 4269 events. 1930/4269 cut-off events. For 14165/14179 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 35956 event pairs, 533 based on Foata normal form. 12/3984 useless extension candidates. Maximal degree in co-relation 16543. Up to 2409 conditions per place. [2024-06-27 18:47:30,545 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 28 selfloop transitions, 4 changer transitions 273/322 dead transitions. [2024-06-27 18:47:30,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 322 transitions, 3295 flow [2024-06-27 18:47:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 18:47:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 18:47:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2024-06-27 18:47:30,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2024-06-27 18:47:30,546 INFO L175 Difference]: Start difference. First operand has 238 places, 302 transitions, 2858 flow. Second operand 8 states and 138 transitions. [2024-06-27 18:47:30,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 322 transitions, 3295 flow [2024-06-27 18:47:30,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 322 transitions, 2753 flow, removed 15 selfloop flow, removed 11 redundant places. [2024-06-27 18:47:30,659 INFO L231 Difference]: Finished difference. Result has 236 places, 46 transitions, 230 flow [2024-06-27 18:47:30,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2320, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=230, PETRI_PLACES=236, PETRI_TRANSITIONS=46} [2024-06-27 18:47:30,659 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 196 predicate places. [2024-06-27 18:47:30,659 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 46 transitions, 230 flow [2024-06-27 18:47:30,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:30,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:30,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:30,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 18:47:30,660 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:30,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:30,660 INFO L85 PathProgramCache]: Analyzing trace with hash -921776730, now seen corresponding path program 2 times [2024-06-27 18:47:30,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:30,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093038003] [2024-06-27 18:47:30,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:30,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 18:47:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 18:47:31,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 18:47:31,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093038003] [2024-06-27 18:47:31,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093038003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 18:47:31,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 18:47:31,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 18:47:31,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166325187] [2024-06-27 18:47:31,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 18:47:31,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 18:47:31,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 18:47:31,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 18:47:31,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 18:47:31,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 36 [2024-06-27 18:47:31,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 46 transitions, 230 flow. Second operand has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 13 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:31,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 18:47:31,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 36 [2024-06-27 18:47:31,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 18:47:31,394 INFO L124 PetriNetUnfolderBase]: 192/466 cut-off events. [2024-06-27 18:47:31,395 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2024-06-27 18:47:31,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 466 events. 192/466 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2323 event pairs, 48 based on Foata normal form. 4/441 useless extension candidates. Maximal degree in co-relation 1268. Up to 208 conditions per place. [2024-06-27 18:47:31,397 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 21 selfloop transitions, 8 changer transitions 21/62 dead transitions. [2024-06-27 18:47:31,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 62 transitions, 366 flow [2024-06-27 18:47:31,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 18:47:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 18:47:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 139 transitions. [2024-06-27 18:47:31,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3861111111111111 [2024-06-27 18:47:31,401 INFO L175 Difference]: Start difference. First operand has 236 places, 46 transitions, 230 flow. Second operand 10 states and 139 transitions. [2024-06-27 18:47:31,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 62 transitions, 366 flow [2024-06-27 18:47:31,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 62 transitions, 308 flow, removed 12 selfloop flow, removed 19 redundant places. [2024-06-27 18:47:31,402 INFO L231 Difference]: Finished difference. Result has 94 places, 33 transitions, 137 flow [2024-06-27 18:47:31,402 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=137, PETRI_PLACES=94, PETRI_TRANSITIONS=33} [2024-06-27 18:47:31,403 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 54 predicate places. [2024-06-27 18:47:31,403 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 33 transitions, 137 flow [2024-06-27 18:47:31,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.384615384615385) internal successors, (148), 13 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 18:47:31,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 18:47:31,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:31,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 18:47:31,403 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (and 4 more)] === [2024-06-27 18:47:31,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 18:47:31,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2121562942, now seen corresponding path program 3 times [2024-06-27 18:47:31,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 18:47:31,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524687169] [2024-06-27 18:47:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 18:47:31,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 18:47:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:47:31,416 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-06-27 18:47:31,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-06-27 18:47:31,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-06-27 18:47:31,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2024-06-27 18:47:31,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2024-06-27 18:47:31,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2024-06-27 18:47:31,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (4 of 7 remaining) [2024-06-27 18:47:31,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 7 remaining) [2024-06-27 18:47:31,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2024-06-27 18:47:31,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2024-06-27 18:47:31,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2024-06-27 18:47:31,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 18:47:31,470 INFO L445 BasicCegarLoop]: Path program histogram: [20, 15, 13, 10, 10, 9, 6, 5, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 18:47:31,475 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 18:47:31,475 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 18:47:31,555 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 18:47:31,561 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 18:47:31,563 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 06:47:31 BasicIcfg [2024-06-27 18:47:31,563 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 18:47:31,563 INFO L158 Benchmark]: Toolchain (without parser) took 292502.32ms. Allocated memory was 192.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 154.6MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-27 18:47:31,564 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 192.9MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:47:31,564 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 192.9MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 18:47:31,564 INFO L158 Benchmark]: CACSL2BoogieTranslator took 682.09ms. Allocated memory is still 192.9MB. Free memory was 154.6MB in the beginning and 120.3MB in the end (delta: 34.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-06-27 18:47:31,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.98ms. Allocated memory is still 192.9MB. Free memory was 120.0MB in the beginning and 116.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 18:47:31,565 INFO L158 Benchmark]: Boogie Preprocessor took 83.22ms. Allocated memory is still 192.9MB. Free memory was 116.9MB in the beginning and 113.0MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 18:47:31,565 INFO L158 Benchmark]: RCFGBuilder took 795.12ms. Allocated memory is still 192.9MB. Free memory was 113.0MB in the beginning and 148.7MB in the end (delta: -35.6MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. [2024-06-27 18:47:31,565 INFO L158 Benchmark]: TraceAbstraction took 290869.65ms. Allocated memory was 192.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 147.6MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2024-06-27 18:47:31,566 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 192.9MB. Free memory is still 164.5MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 192.9MB. Free memory is still 160.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 682.09ms. Allocated memory is still 192.9MB. Free memory was 154.6MB in the beginning and 120.3MB in the end (delta: 34.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.98ms. Allocated memory is still 192.9MB. Free memory was 120.0MB in the beginning and 116.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 83.22ms. Allocated memory is still 192.9MB. Free memory was 116.9MB in the beginning and 113.0MB in the end (delta: 3.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 795.12ms. Allocated memory is still 192.9MB. Free memory was 113.0MB in the beginning and 148.7MB in the end (delta: -35.6MB). Peak memory consumption was 54.9MB. Max. memory is 16.1GB. * TraceAbstraction took 290869.65ms. Allocated memory was 192.9MB in the beginning and 3.6GB in the end (delta: 3.4GB). Free memory was 147.6MB in the beginning and 2.3GB in the end (delta: -2.1GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1] 0 //@ ghost int multithreaded = 0; [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p1_EAX = 0; [L712] 0 int __unbuffered_p1_EBX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L718] 0 int y = 0; [L719] 0 _Bool y$flush_delayed; [L720] 0 int y$mem_tmp; [L721] 0 _Bool y$r_buff0_thd0; [L722] 0 _Bool y$r_buff0_thd1; [L723] 0 _Bool y$r_buff0_thd2; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$read_delayed; [L728] 0 int *y$read_delayed_var; [L729] 0 int y$w_buff0; [L730] 0 _Bool y$w_buff0_used; [L731] 0 int y$w_buff1; [L732] 0 _Bool y$w_buff1_used; [L733] 0 _Bool weak$$choice0; [L734] 0 _Bool weak$$choice2; [L810] 0 pthread_t t1717; [L811] 0 //@ ghost multithreaded = 1; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1717=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L811] FCALL, FORK 0 pthread_create(&t1717, ((void *)0), P0, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1717=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L812] 0 pthread_t t1718; VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1717=-1, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L813] 0 //@ assert (((((((((((((((!multithreaded || (y$r_buff1_thd0 == (_Bool) 0)) && (!multithreaded || (((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)) || (__unbuffered_p1_EAX == 2)))) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || (y$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (y$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (((y$mem_tmp == 0) || (y$mem_tmp == 1)) || (y$mem_tmp == 2)))) && (!multithreaded || (y$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))) && (!multithreaded || (((y == 0) || (y == 1)) || (y == 2)))) && (!multithreaded || ((y$w_buff1 == 0) || (y$w_buff1 == 2)))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || ((y$w_buff0 == 0) || (y$w_buff0 == 2)))) && (!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)))) && (!multithreaded || (y$read_delayed_var == 0))); [L813] FCALL, FORK 0 pthread_create(&t1718, ((void *)0), P1, ((void *)0)) VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1717=-1, t1718=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L814] 0 //@ assert (((((((((((((((!multithreaded || (y$r_buff1_thd0 == (_Bool) 0)) && (!multithreaded || (((__unbuffered_p1_EAX == 0) || (__unbuffered_p1_EAX == 1)) || (__unbuffered_p1_EAX == 2)))) && (!multithreaded || (0 <= __unbuffered_cnt))) && (!multithreaded || (y$r_buff1_thd1 == (_Bool) 0))) && (!multithreaded || (y$r_buff0_thd1 == (_Bool) 0))) && (!multithreaded || (((y$mem_tmp == 0) || (y$mem_tmp == 1)) || (y$mem_tmp == 2)))) && (!multithreaded || (y$r_buff0_thd0 == (_Bool) 0))) && (!multithreaded || (y$flush_delayed == (_Bool) 0))) && (!multithreaded || (((y == 0) || (y == 1)) || (y == 2)))) && (!multithreaded || ((y$w_buff1 == 0) || (y$w_buff1 == 2)))) && (!multithreaded || (y$read_delayed == (_Bool) 0))) && (!multithreaded || ((x == 0) || (x == 1)))) && (!multithreaded || ((y$w_buff0 == 0) || (y$w_buff0 == 2)))) && (!multithreaded || ((__unbuffered_p1_EBX == 0) || (__unbuffered_p1_EBX == 1)))) && (!multithreaded || (y$read_delayed_var == 0))); VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, main$tmp_guard0=0, main$tmp_guard1=0, t1717=-1, t1718=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L758] 2 y$w_buff1 = y$w_buff0 [L759] 2 y$w_buff0 = 2 [L760] 2 y$w_buff1_used = y$w_buff0_used [L761] 2 y$w_buff0_used = (_Bool)1 [L762] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 2 !(!expression) [L762] RET 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L763] 2 y$r_buff1_thd0 = y$r_buff0_thd0 [L764] 2 y$r_buff1_thd1 = y$r_buff0_thd1 [L765] 2 y$r_buff1_thd2 = y$r_buff0_thd2 [L766] 2 y$r_buff0_thd2 = (_Bool)1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L769] 2 weak$$choice0 = __VERIFIER_nondet_bool() [L770] 2 weak$$choice2 = __VERIFIER_nondet_bool() [L771] 2 y$flush_delayed = weak$$choice2 [L772] 2 y$mem_tmp = y [L773] 2 y = !y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff1) [L774] 2 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : y$w_buff0)) [L775] 2 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff1 : y$w_buff1)) [L776] 2 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used)) [L777] 2 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L778] 2 y$r_buff0_thd2 = weak$$choice2 ? y$r_buff0_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff0_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2)) [L779] 2 y$r_buff1_thd2 = weak$$choice2 ? y$r_buff1_thd2 : (!y$w_buff0_used || !y$r_buff0_thd2 && !y$w_buff1_used || !y$r_buff0_thd2 && !y$r_buff1_thd2 ? y$r_buff1_thd2 : (y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : (_Bool)0)) [L780] 2 __unbuffered_p1_EAX = y [L781] 2 y = y$flush_delayed ? y$mem_tmp : y [L782] 2 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L785] 2 __unbuffered_p1_EBX = x VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L738] 1 x = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L741] 1 y = 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L744] 1 y = y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd1 ? y$w_buff1 : y) [L745] 1 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used [L746] 1 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$w_buff1_used [L747] 1 y$r_buff0_thd1 = y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1 [L748] 1 y$r_buff1_thd1 = y$w_buff0_used && y$r_buff0_thd1 || y$w_buff1_used && y$r_buff1_thd1 ? (_Bool)0 : y$r_buff1_thd1 VAL [\old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=1] [L788] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L789] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L790] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L791] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L792] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=0, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L795] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, __unbuffered_cnt=1, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L751] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L815] 0 main$tmp_guard0 = __unbuffered_cnt == 2 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1717=-1, t1718=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L817] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L817] RET 0 assume_abort_if_not(main$tmp_guard0) [L819] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L820] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L821] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L822] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L823] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1717=-1, t1718=0, weak$$choice0=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L826] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L827] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L828] 0 y$flush_delayed = weak$$choice2 [L829] 0 y$mem_tmp = y [L830] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L831] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L832] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L833] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L834] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L835] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L836] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L837] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p1_EAX == 2 && __unbuffered_p1_EBX == 0) [L838] 0 y = y$flush_delayed ? y$mem_tmp : y [L839] 0 y$flush_delayed = (_Bool)0 VAL [\old(arg)={0:0}, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1717=-1, t1718=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L841] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] [L18] 0 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, __unbuffered_cnt=2, __unbuffered_p1_EAX=2, __unbuffered_p1_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice0=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=2] - UnprovableResult [Line: 18]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 813]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 814]: Unable to prove that invariant of correctness witness holds Unable to prove that invariant of correctness witness holds Reason: Not analyzed. - UnprovableResult [Line: 813]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 811]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 54 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 290.7s, OverallIterations: 124, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 194.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7803 SdHoareTripleChecker+Valid, 39.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6851 mSDsluCounter, 4481 SdHoareTripleChecker+Invalid, 34.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3840 mSDsCounter, 2255 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58260 IncrementalHoareTripleChecker+Invalid, 60515 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2255 mSolverCounterUnsat, 641 mSDtfsCounter, 58260 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1267 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2399 ImplicationChecksByTransitivity, 33.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8696occurred in iteration=118, InterpolantAutomatonStates: 1119, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 94.2s InterpolantComputationTime, 1963 NumberOfCodeBlocks, 1963 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1814 ConstructedInterpolants, 0 QuantifiedInterpolants, 74406 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 123 InterpolantComputations, 123 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-06-27 18:47:31,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE