/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 07:17:09,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 07:17:09,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 07:17:09,763 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 07:17:09,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 07:17:09,764 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 07:17:09,765 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 07:17:09,789 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 07:17:09,790 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 07:17:09,790 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 07:17:09,790 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 07:17:09,790 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 07:17:09,791 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 07:17:09,791 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 07:17:09,791 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 07:17:09,792 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 07:17:09,792 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 07:17:09,792 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 07:17:09,792 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 07:17:09,792 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 07:17:09,793 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 07:17:09,796 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 07:17:09,796 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 07:17:09,796 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 07:17:09,801 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 07:17:09,801 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 07:17:09,801 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 07:17:09,802 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 07:17:09,802 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 07:17:09,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 07:17:09,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:17:09,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 07:17:09,803 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 07:17:09,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 07:17:09,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 07:17:09,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 07:17:09,803 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 07:17:09,803 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 07:17:09,803 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 07:17:09,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 07:17:09,804 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 07:17:09,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 07:17:09,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 07:17:10,013 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 07:17:10,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 07:17:10,015 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 07:17:10,016 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 07:17:10,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 07:17:11,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 07:17:11,262 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 07:17:11,263 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 07:17:11,273 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c6a4e28c/52f0291cf29c4fee8c6ef0593a35f544/FLAG153cb2bbe [2023-08-04 07:17:11,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c6a4e28c/52f0291cf29c4fee8c6ef0593a35f544 [2023-08-04 07:17:11,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 07:17:11,293 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 07:17:11,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 07:17:11,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 07:17:11,296 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 07:17:11,296 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c42271a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11, skipping insertion in model container [2023-08-04 07:17:11,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,347 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 07:17:11,476 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-04 07:17:11,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:17:11,607 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 07:17:11,615 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-04 07:17:11,630 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 07:17:11,631 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 07:17:11,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:17:11,674 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:17:11,674 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:17:11,679 INFO L206 MainTranslator]: Completed translation [2023-08-04 07:17:11,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11 WrapperNode [2023-08-04 07:17:11,681 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 07:17:11,681 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 07:17:11,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 07:17:11,682 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 07:17:11,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,696 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,713 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-04 07:17:11,713 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 07:17:11,714 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 07:17:11,714 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 07:17:11,714 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 07:17:11,722 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,747 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,749 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 07:17:11,749 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 07:17:11,750 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 07:17:11,750 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 07:17:11,750 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (1/1) ... [2023-08-04 07:17:11,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:17:11,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:11,775 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 07:17:11,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 07:17:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 07:17:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 07:17:11,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 07:17:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 07:17:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 07:17:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 07:17:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 07:17:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 07:17:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 07:17:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 07:17:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 07:17:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 07:17:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 07:17:11,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 07:17:11,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 07:17:11,831 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 07:17:11,955 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 07:17:11,957 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 07:17:12,143 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 07:17:12,148 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 07:17:12,148 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 07:17:12,150 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:17:12 BoogieIcfgContainer [2023-08-04 07:17:12,150 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 07:17:12,151 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 07:17:12,151 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 07:17:12,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 07:17:12,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 07:17:11" (1/3) ... [2023-08-04 07:17:12,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfaa946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:17:12, skipping insertion in model container [2023-08-04 07:17:12,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:17:11" (2/3) ... [2023-08-04 07:17:12,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cfaa946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:17:12, skipping insertion in model container [2023-08-04 07:17:12,164 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:17:12" (3/3) ... [2023-08-04 07:17:12,165 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe025_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 07:17:12,171 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 07:17:12,178 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 07:17:12,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 07:17:12,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 07:17:12,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:17:12,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 07:17:12,358 INFO L124 PetriNetUnfolderBase]: 30/414 cut-off events. [2023-08-04 07:17:12,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:12,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 414 events. 30/414 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1853 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 243. Up to 16 conditions per place. [2023-08-04 07:17:12,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 07:17:12,368 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 91 transitions, 191 flow [2023-08-04 07:17:12,370 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:17:12,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 91 transitions, 191 flow [2023-08-04 07:17:12,377 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 91 transitions, 191 flow [2023-08-04 07:17:12,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 91 transitions, 191 flow [2023-08-04 07:17:12,408 INFO L124 PetriNetUnfolderBase]: 22/311 cut-off events. [2023-08-04 07:17:12,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:12,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 311 events. 22/311 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1253 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 189. Up to 16 conditions per place. [2023-08-04 07:17:12,411 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2023-08-04 07:17:14,056 INFO L134 LiptonReduction]: Checked pairs total: 2845 [2023-08-04 07:17:14,057 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-04 07:17:14,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:17:14,082 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@17105c9f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:17:14,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 07:17:14,090 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:17:14,090 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 07:17:14,090 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:14,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:14,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 07:17:14,091 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:14,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:14,095 INFO L85 PathProgramCache]: Analyzing trace with hash 356449654, now seen corresponding path program 1 times [2023-08-04 07:17:14,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:14,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651971258] [2023-08-04 07:17:14,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:14,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:14,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:14,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:17:14,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:14,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651971258] [2023-08-04 07:17:14,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651971258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:14,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:17:14,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:17:14,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60632033] [2023-08-04 07:17:14,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:14,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:17:14,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:14,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:17:14,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:17:14,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2023-08-04 07:17:14,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:14,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2023-08-04 07:17:14,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:14,526 INFO L124 PetriNetUnfolderBase]: 400/736 cut-off events. [2023-08-04 07:17:14,527 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:14,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1445 conditions, 736 events. 400/736 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3719 event pairs, 222 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 1432. Up to 668 conditions per place. [2023-08-04 07:17:14,532 INFO L140 encePairwiseOnDemand]: 178/182 looper letters, 20 selfloop transitions, 2 changer transitions 1/26 dead transitions. [2023-08-04 07:17:14,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 107 flow [2023-08-04 07:17:14,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:17:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:17:14,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-08-04 07:17:14,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567765567765568 [2023-08-04 07:17:14,544 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-08-04 07:17:14,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-08-04 07:17:14,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:14,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-08-04 07:17:14,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,554 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,556 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 57 flow. Second operand 3 states and 304 transitions. [2023-08-04 07:17:14,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 107 flow [2023-08-04 07:17:14,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:17:14,559 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 63 flow [2023-08-04 07:17:14,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-04 07:17:14,563 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 07:17:14,563 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 63 flow [2023-08-04 07:17:14,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:14,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:14,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 07:17:14,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:14,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:14,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1087985545, now seen corresponding path program 1 times [2023-08-04 07:17:14,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:14,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059664918] [2023-08-04 07:17:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:14,636 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:17:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059664918] [2023-08-04 07:17:14,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059664918] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:17:14,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128868864] [2023-08-04 07:17:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:14,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:14,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:14,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:17:14,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 07:17:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:14,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:17:14,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:17:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:17:14,730 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:17:14,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128868864] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:14,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:17:14,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:17:14,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215464977] [2023-08-04 07:17:14,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:14,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:17:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:14,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:17:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:17:14,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2023-08-04 07:17:14,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:14,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2023-08-04 07:17:14,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:14,823 INFO L124 PetriNetUnfolderBase]: 338/604 cut-off events. [2023-08-04 07:17:14,823 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 07:17:14,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 604 events. 338/604 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2732 event pairs, 262 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1184. Up to 529 conditions per place. [2023-08-04 07:17:14,827 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 22 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2023-08-04 07:17:14,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 123 flow [2023-08-04 07:17:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:17:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:17:14,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-04 07:17:14,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5586080586080586 [2023-08-04 07:17:14,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-04 07:17:14,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-04 07:17:14,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:14,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-04 07:17:14,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,833 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 63 flow. Second operand 3 states and 305 transitions. [2023-08-04 07:17:14,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 123 flow [2023-08-04 07:17:14,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:17:14,835 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 67 flow [2023-08-04 07:17:14,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-08-04 07:17:14,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2023-08-04 07:17:14,836 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 67 flow [2023-08-04 07:17:14,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:14,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:14,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:14,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 07:17:15,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:15,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:15,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1614153841, now seen corresponding path program 1 times [2023-08-04 07:17:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:15,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501211813] [2023-08-04 07:17:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:15,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:17:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501211813] [2023-08-04 07:17:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501211813] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:17:15,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481860581] [2023-08-04 07:17:15,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:15,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:15,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:15,112 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:17:15,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 07:17:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:15,208 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:17:15,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:17:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:17:15,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:17:15,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481860581] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:15,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:17:15,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:17:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609388312] [2023-08-04 07:17:15,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:15,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:17:15,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:15,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:17:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:17:15,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2023-08-04 07:17:15,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:15,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2023-08-04 07:17:15,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:15,337 INFO L124 PetriNetUnfolderBase]: 314/526 cut-off events. [2023-08-04 07:17:15,337 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-04 07:17:15,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 526 events. 314/526 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2315 event pairs, 182 based on Foata normal form. 0/495 useless extension candidates. Maximal degree in co-relation 1091. Up to 407 conditions per place. [2023-08-04 07:17:15,339 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 24 selfloop transitions, 2 changer transitions 1/30 dead transitions. [2023-08-04 07:17:15,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 135 flow [2023-08-04 07:17:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:17:15,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:17:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-04 07:17:15,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622710622710623 [2023-08-04 07:17:15,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-04 07:17:15,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-04 07:17:15,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:15,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-04 07:17:15,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,345 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 67 flow. Second operand 3 states and 307 transitions. [2023-08-04 07:17:15,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 135 flow [2023-08-04 07:17:15,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:17:15,346 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 71 flow [2023-08-04 07:17:15,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-04 07:17:15,347 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-04 07:17:15,347 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 71 flow [2023-08-04 07:17:15,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:15,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:15,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 07:17:15,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 07:17:15,553 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:15,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:15,554 INFO L85 PathProgramCache]: Analyzing trace with hash 782053036, now seen corresponding path program 1 times [2023-08-04 07:17:15,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:15,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716823162] [2023-08-04 07:17:15,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:15,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:15,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:17:15,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716823162] [2023-08-04 07:17:15,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716823162] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:17:15,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749904855] [2023-08-04 07:17:15,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:15,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:15,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:15,622 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:17:15,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 07:17:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:15,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:17:15,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:17:15,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:17:15,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:17:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:17:15,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749904855] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:17:15,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:17:15,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:17:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302229382] [2023-08-04 07:17:15,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:17:15,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:17:15,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:17:15,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:17:15,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 182 [2023-08-04 07:17:15,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:15,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 182 [2023-08-04 07:17:15,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:15,757 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 07:17:15,759 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:15,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 07:17:15,762 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 07:17:15,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 07:17:15,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:17:15,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:17:15,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2023-08-04 07:17:15,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2023-08-04 07:17:15,764 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2023-08-04 07:17:15,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2023-08-04 07:17:15,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:15,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2023-08-04 07:17:15,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,766 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,766 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 71 flow. Second operand 4 states and 378 transitions. [2023-08-04 07:17:15,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 07:17:15,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:17:15,767 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 07:17:15,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 07:17:15,768 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -12 predicate places. [2023-08-04 07:17:15,768 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 07:17:15,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:15,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 07:17:15,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 07:17:15,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:15,976 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 07:17:15,978 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 07:17:15,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 07:17:16,005 INFO L124 PetriNetUnfolderBase]: 30/414 cut-off events. [2023-08-04 07:17:16,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:16,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 414 events. 30/414 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1853 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 243. Up to 16 conditions per place. [2023-08-04 07:17:16,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 07:17:16,007 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 78 transitions, 171 flow [2023-08-04 07:17:16,007 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:17:16,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 78 transitions, 171 flow [2023-08-04 07:17:16,008 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 78 transitions, 171 flow [2023-08-04 07:17:16,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 171 flow [2023-08-04 07:17:16,017 INFO L124 PetriNetUnfolderBase]: 6/190 cut-off events. [2023-08-04 07:17:16,017 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:16,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 190 events. 6/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 587 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-04 07:17:16,018 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2023-08-04 07:17:17,211 INFO L134 LiptonReduction]: Checked pairs total: 2116 [2023-08-04 07:17:17,211 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-04 07:17:17,212 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 07:17:17,213 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@17105c9f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:17:17,213 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 07:17:17,215 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:17:17,215 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-04 07:17:17,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:17,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:17,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 07:17:17,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 07:17:17,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:17,216 INFO L85 PathProgramCache]: Analyzing trace with hash -56060982, now seen corresponding path program 1 times [2023-08-04 07:17:17,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:17,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59408806] [2023-08-04 07:17:17,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:17,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:17:17,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:17,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59408806] [2023-08-04 07:17:17,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59408806] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:17,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:17:17,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:17:17,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369777839] [2023-08-04 07:17:17,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:17,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:17:17,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:17,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:17:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:17:17,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 166 [2023-08-04 07:17:17,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:17,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:17,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 166 [2023-08-04 07:17:17,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:17,287 INFO L124 PetriNetUnfolderBase]: 160/340 cut-off events. [2023-08-04 07:17:17,288 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:17,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 689 conditions, 340 events. 160/340 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1635 event pairs, 78 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 670. Up to 284 conditions per place. [2023-08-04 07:17:17,289 INFO L140 encePairwiseOnDemand]: 163/166 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-04 07:17:17,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 107 flow [2023-08-04 07:17:17,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:17:17,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:17:17,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-08-04 07:17:17,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6024096385542169 [2023-08-04 07:17:17,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-08-04 07:17:17,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-08-04 07:17:17,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:17,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-08-04 07:17:17,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:17,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:17,292 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 166.0) internal successors, (664), 4 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:17,292 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 61 flow. Second operand 3 states and 300 transitions. [2023-08-04 07:17:17,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 107 flow [2023-08-04 07:17:17,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:17:17,293 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 69 flow [2023-08-04 07:17:17,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-04 07:17:17,293 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 07:17:17,293 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 69 flow [2023-08-04 07:17:17,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:17,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:17,294 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 07:17:17,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 07:17:17,294 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 07:17:17,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:17,294 INFO L85 PathProgramCache]: Analyzing trace with hash -64633540, now seen corresponding path program 1 times [2023-08-04 07:17:17,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:17,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021206047] [2023-08-04 07:17:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:17,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:17:17,303 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:17:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:17:17,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:17:17,317 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:17:17,318 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 07:17:17,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 07:17:17,318 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 07:17:17,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 07:17:17,318 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 07:17:17,319 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 07:17:17,319 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 07:17:17,319 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 07:17:17,331 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:17:17,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 127 transitions, 290 flow [2023-08-04 07:17:17,428 INFO L124 PetriNetUnfolderBase]: 93/1304 cut-off events. [2023-08-04 07:17:17,428 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 07:17:17,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 1304 events. 93/1304 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8886 event pairs, 0 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 945. Up to 54 conditions per place. [2023-08-04 07:17:17,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 127 transitions, 290 flow [2023-08-04 07:17:17,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 112 transitions, 248 flow [2023-08-04 07:17:17,433 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:17:17,434 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 112 transitions, 248 flow [2023-08-04 07:17:17,434 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 112 transitions, 248 flow [2023-08-04 07:17:17,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 112 transitions, 248 flow [2023-08-04 07:17:17,497 INFO L124 PetriNetUnfolderBase]: 66/967 cut-off events. [2023-08-04 07:17:17,497 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 07:17:17,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 967 events. 66/967 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6003 event pairs, 0 based on Foata normal form. 0/862 useless extension candidates. Maximal degree in co-relation 717. Up to 54 conditions per place. [2023-08-04 07:17:17,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 3996 [2023-08-04 07:17:18,898 INFO L134 LiptonReduction]: Checked pairs total: 7661 [2023-08-04 07:17:18,898 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-04 07:17:18,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:17:18,902 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@17105c9f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:17:18,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 07:17:18,904 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:17:18,904 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 07:17:18,904 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:17:18,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:18,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 07:17:18,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:18,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:18,905 INFO L85 PathProgramCache]: Analyzing trace with hash 630489879, now seen corresponding path program 1 times [2023-08-04 07:17:18,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:18,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688520338] [2023-08-04 07:17:18,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:18,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:17:18,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:18,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688520338] [2023-08-04 07:17:18,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688520338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:18,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:17:18,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:17:18,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897755317] [2023-08-04 07:17:18,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:18,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:17:18,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:18,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:17:18,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:17:18,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 206 [2023-08-04 07:17:18,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:18,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:18,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 206 [2023-08-04 07:17:18,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:22,599 INFO L124 PetriNetUnfolderBase]: 33046/47771 cut-off events. [2023-08-04 07:17:22,600 INFO L125 PetriNetUnfolderBase]: For 1425/1425 co-relation queries the response was YES. [2023-08-04 07:17:22,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93162 conditions, 47771 events. 33046/47771 cut-off events. For 1425/1425 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 334227 event pairs, 26064 based on Foata normal form. 0/45433 useless extension candidates. Maximal degree in co-relation 26554. Up to 43520 conditions per place. [2023-08-04 07:17:22,975 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 31 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-04 07:17:22,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 174 flow [2023-08-04 07:17:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:17:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:17:22,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-04 07:17:22,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5938511326860841 [2023-08-04 07:17:22,977 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-04 07:17:22,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-04 07:17:22,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:22,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-04 07:17:22,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:22,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:22,980 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:22,980 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 100 flow. Second operand 3 states and 367 transitions. [2023-08-04 07:17:22,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 174 flow [2023-08-04 07:17:22,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:17:22,981 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 112 flow [2023-08-04 07:17:22,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-08-04 07:17:22,981 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-04 07:17:22,982 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 112 flow [2023-08-04 07:17:22,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:22,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:22,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:22,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 07:17:22,982 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:22,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:22,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1300022750, now seen corresponding path program 1 times [2023-08-04 07:17:22,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:22,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897930964] [2023-08-04 07:17:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:22,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:22,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:23,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:17:23,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:23,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897930964] [2023-08-04 07:17:23,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897930964] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:17:23,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778690584] [2023-08-04 07:17:23,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:23,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:23,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:23,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:17:23,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 07:17:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:23,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:17:23,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:17:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:17:23,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:17:23,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778690584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:23,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:17:23,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:17:23,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562651091] [2023-08-04 07:17:23,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:23,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:17:23,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:23,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:17:23,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:17:23,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 206 [2023-08-04 07:17:23,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:23,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:23,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 206 [2023-08-04 07:17:23,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:25,832 INFO L124 PetriNetUnfolderBase]: 31406/44873 cut-off events. [2023-08-04 07:17:25,832 INFO L125 PetriNetUnfolderBase]: For 1143/1143 co-relation queries the response was YES. [2023-08-04 07:17:25,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87754 conditions, 44873 events. 31406/44873 cut-off events. For 1143/1143 co-relation queries the response was YES. Maximal size of possible extension queue 1591. Compared 307521 event pairs, 24928 based on Foata normal form. 0/42784 useless extension candidates. Maximal degree in co-relation 87717. Up to 40987 conditions per place. [2023-08-04 07:17:26,293 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 36 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-04 07:17:26,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 204 flow [2023-08-04 07:17:26,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:17:26,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:17:26,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-04 07:17:26,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003236245954693 [2023-08-04 07:17:26,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-04 07:17:26,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-04 07:17:26,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:26,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-04 07:17:26,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:26,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:26,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:26,424 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 112 flow. Second operand 3 states and 371 transitions. [2023-08-04 07:17:26,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 204 flow [2023-08-04 07:17:26,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:17:26,425 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 122 flow [2023-08-04 07:17:26,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-04 07:17:26,425 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-04 07:17:26,426 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 122 flow [2023-08-04 07:17:26,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:26,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:26,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:26,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 07:17:26,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:26,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:26,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:26,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1982578291, now seen corresponding path program 1 times [2023-08-04 07:17:26,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:26,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685635145] [2023-08-04 07:17:26,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:26,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:26,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:17:26,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685635145] [2023-08-04 07:17:26,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685635145] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:17:26,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216073640] [2023-08-04 07:17:26,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:26,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:26,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:26,678 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:17:26,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 07:17:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:26,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:17:26,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:17:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:17:26,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:17:26,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216073640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:26,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:17:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:17:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81059630] [2023-08-04 07:17:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:26,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:17:26,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:17:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:17:26,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 206 [2023-08-04 07:17:26,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:26,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:26,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 206 [2023-08-04 07:17:26,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:29,251 INFO L124 PetriNetUnfolderBase]: 30734/43358 cut-off events. [2023-08-04 07:17:29,251 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-08-04 07:17:29,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85613 conditions, 43358 events. 30734/43358 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 290619 event pairs, 23582 based on Foata normal form. 0/41626 useless extension candidates. Maximal degree in co-relation 24344. Up to 37757 conditions per place. [2023-08-04 07:17:29,491 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 41 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-04 07:17:29,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 232 flow [2023-08-04 07:17:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:17:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:17:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-04 07:17:29,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6067961165048543 [2023-08-04 07:17:29,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-04 07:17:29,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-04 07:17:29,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:29,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-04 07:17:29,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:29,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:29,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:29,498 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 122 flow. Second operand 3 states and 375 transitions. [2023-08-04 07:17:29,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 232 flow [2023-08-04 07:17:29,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:17:29,504 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 132 flow [2023-08-04 07:17:29,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-04 07:17:29,506 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-04 07:17:29,506 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 132 flow [2023-08-04 07:17:29,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:29,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:29,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:29,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 07:17:29,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:29,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:29,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:29,713 INFO L85 PathProgramCache]: Analyzing trace with hash -832832190, now seen corresponding path program 1 times [2023-08-04 07:17:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:29,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822738034] [2023-08-04 07:17:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:17:29,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:29,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822738034] [2023-08-04 07:17:29,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822738034] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:17:29,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623683778] [2023-08-04 07:17:29,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:29,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:29,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:29,779 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:17:29,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 07:17:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:29,844 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:17:29,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:17:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:17:29,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:17:29,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:17:29,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623683778] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:17:29,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:17:29,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:17:29,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29938823] [2023-08-04 07:17:29,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:17:29,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:17:29,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:29,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:17:29,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:17:29,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 206 [2023-08-04 07:17:29,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:29,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:29,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 206 [2023-08-04 07:17:29,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:31,813 INFO L124 PetriNetUnfolderBase]: 24232/33893 cut-off events. [2023-08-04 07:17:31,813 INFO L125 PetriNetUnfolderBase]: For 3624/3624 co-relation queries the response was YES. [2023-08-04 07:17:31,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69782 conditions, 33893 events. 24232/33893 cut-off events. For 3624/3624 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 213857 event pairs, 14820 based on Foata normal form. 3/33868 useless extension candidates. Maximal degree in co-relation 24810. Up to 31258 conditions per place. [2023-08-04 07:17:32,025 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 36 selfloop transitions, 3 changer transitions 1/49 dead transitions. [2023-08-04 07:17:32,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 228 flow [2023-08-04 07:17:32,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:17:32,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:17:32,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 479 transitions. [2023-08-04 07:17:32,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5813106796116505 [2023-08-04 07:17:32,027 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 479 transitions. [2023-08-04 07:17:32,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 479 transitions. [2023-08-04 07:17:32,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:32,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 479 transitions. [2023-08-04 07:17:32,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:32,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:32,032 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:32,032 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 132 flow. Second operand 4 states and 479 transitions. [2023-08-04 07:17:32,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 228 flow [2023-08-04 07:17:32,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:17:32,037 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 144 flow [2023-08-04 07:17:32,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-04 07:17:32,038 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-04 07:17:32,038 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 144 flow [2023-08-04 07:17:32,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.6) internal successors, (568), 5 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:32,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:32,038 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:32,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 07:17:32,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:32,243 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:32,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:32,244 INFO L85 PathProgramCache]: Analyzing trace with hash -475613238, now seen corresponding path program 1 times [2023-08-04 07:17:32,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:32,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108766189] [2023-08-04 07:17:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 07:17:32,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:32,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108766189] [2023-08-04 07:17:32,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108766189] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:17:32,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456637598] [2023-08-04 07:17:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:32,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:32,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:32,313 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:17:32,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 07:17:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:32,467 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:17:32,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:17:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 07:17:32,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:17:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 07:17:32,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456637598] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:17:32,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:17:32,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 07:17:32,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231978173] [2023-08-04 07:17:32,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:17:32,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:17:32,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:32,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:17:32,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:17:32,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 206 [2023-08-04 07:17:32,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:32,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:32,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 206 [2023-08-04 07:17:32,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:34,426 INFO L124 PetriNetUnfolderBase]: 19198/26485 cut-off events. [2023-08-04 07:17:34,427 INFO L125 PetriNetUnfolderBase]: For 2439/2439 co-relation queries the response was YES. [2023-08-04 07:17:34,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54371 conditions, 26485 events. 19198/26485 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 160015 event pairs, 11902 based on Foata normal form. 27/26511 useless extension candidates. Maximal degree in co-relation 19295. Up to 23785 conditions per place. [2023-08-04 07:17:34,569 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 44 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2023-08-04 07:17:34,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 272 flow [2023-08-04 07:17:34,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:17:34,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:17:34,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 487 transitions. [2023-08-04 07:17:34,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5910194174757282 [2023-08-04 07:17:34,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 487 transitions. [2023-08-04 07:17:34,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 487 transitions. [2023-08-04 07:17:34,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:34,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 487 transitions. [2023-08-04 07:17:34,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:34,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:34,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:34,574 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 144 flow. Second operand 4 states and 487 transitions. [2023-08-04 07:17:34,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 272 flow [2023-08-04 07:17:34,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 265 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 07:17:34,579 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 151 flow [2023-08-04 07:17:34,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-04 07:17:34,580 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-04 07:17:34,580 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 151 flow [2023-08-04 07:17:34,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:34,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:34,580 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:34,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 07:17:34,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:34,785 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:34,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:34,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1718929282, now seen corresponding path program 1 times [2023-08-04 07:17:34,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:34,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851565572] [2023-08-04 07:17:34,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:34,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:34,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:17:34,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:34,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851565572] [2023-08-04 07:17:34,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851565572] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:17:34,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774250728] [2023-08-04 07:17:34,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:34,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:17:34,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:17:34,829 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:17:34,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 07:17:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:34,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:17:34,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:17:34,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:17:34,915 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:17:34,925 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:17:34,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774250728] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:17:34,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:17:34,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 07:17:34,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220882844] [2023-08-04 07:17:34,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:17:34,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:17:34,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:34,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:17:34,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:17:34,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 206 [2023-08-04 07:17:34,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:34,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:34,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 206 [2023-08-04 07:17:34,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:36,394 INFO L124 PetriNetUnfolderBase]: 17362/23209 cut-off events. [2023-08-04 07:17:36,394 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-04 07:17:36,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48754 conditions, 23209 events. 17362/23209 cut-off events. For 2377/2377 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 127849 event pairs, 6886 based on Foata normal form. 243/23451 useless extension candidates. Maximal degree in co-relation 17297. Up to 11794 conditions per place. [2023-08-04 07:17:36,539 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 52 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2023-08-04 07:17:36,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 311 flow [2023-08-04 07:17:36,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:17:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:17:36,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-08-04 07:17:36,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6007281553398058 [2023-08-04 07:17:36,567 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-08-04 07:17:36,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-08-04 07:17:36,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:36,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-08-04 07:17:36,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:36,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:36,570 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:36,570 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 151 flow. Second operand 4 states and 495 transitions. [2023-08-04 07:17:36,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 311 flow [2023-08-04 07:17:36,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 304 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 07:17:36,574 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 158 flow [2023-08-04 07:17:36,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2023-08-04 07:17:36,575 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-04 07:17:36,575 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 158 flow [2023-08-04 07:17:36,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:36,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:36,576 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:36,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 07:17:36,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 07:17:36,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:36,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash -501771954, now seen corresponding path program 1 times [2023-08-04 07:17:36,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:36,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434990608] [2023-08-04 07:17:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:36,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:36,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 07:17:37,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:37,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434990608] [2023-08-04 07:17:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434990608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:37,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:17:37,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 07:17:37,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719161219] [2023-08-04 07:17:37,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:37,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:17:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:17:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:17:37,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2023-08-04 07:17:37,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:37,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:37,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2023-08-04 07:17:37,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:17:47,648 INFO L124 PetriNetUnfolderBase]: 149614/188497 cut-off events. [2023-08-04 07:17:47,649 INFO L125 PetriNetUnfolderBase]: For 88114/88114 co-relation queries the response was YES. [2023-08-04 07:17:48,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429095 conditions, 188497 events. 149614/188497 cut-off events. For 88114/88114 co-relation queries the response was YES. Maximal size of possible extension queue 5121. Compared 1041059 event pairs, 55078 based on Foata normal form. 3524/191988 useless extension candidates. Maximal degree in co-relation 135025. Up to 107253 conditions per place. [2023-08-04 07:17:48,902 INFO L140 encePairwiseOnDemand]: 194/206 looper letters, 56 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2023-08-04 07:17:48,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 397 flow [2023-08-04 07:17:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:17:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:17:48,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-04 07:17:48,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5922330097087378 [2023-08-04 07:17:48,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-04 07:17:48,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-04 07:17:48,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:17:48,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-04 07:17:48,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:48,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:48,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:48,906 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 158 flow. Second operand 3 states and 366 transitions. [2023-08-04 07:17:48,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 397 flow [2023-08-04 07:17:49,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 70 transitions, 383 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 07:17:49,508 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 237 flow [2023-08-04 07:17:49,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-08-04 07:17:49,510 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2023-08-04 07:17:49,510 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 237 flow [2023-08-04 07:17:49,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:49,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:17:49,511 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:17:49,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 07:17:49,511 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:17:49,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:17:49,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1624937965, now seen corresponding path program 1 times [2023-08-04 07:17:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:17:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299925114] [2023-08-04 07:17:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:17:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:17:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:17:49,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 07:17:49,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:17:49,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299925114] [2023-08-04 07:17:49,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299925114] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:17:49,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:17:49,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:17:49,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807217679] [2023-08-04 07:17:49,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:17:49,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 07:17:49,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:17:49,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 07:17:49,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 07:17:49,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-04 07:17:49,621 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:17:49,621 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:17:49,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-04 07:17:49,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:18:05,940 INFO L124 PetriNetUnfolderBase]: 187389/244584 cut-off events. [2023-08-04 07:18:05,940 INFO L125 PetriNetUnfolderBase]: For 185859/186406 co-relation queries the response was YES. [2023-08-04 07:18:07,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681233 conditions, 244584 events. 187389/244584 cut-off events. For 185859/186406 co-relation queries the response was YES. Maximal size of possible extension queue 8727. Compared 1610285 event pairs, 31309 based on Foata normal form. 3664/240868 useless extension candidates. Maximal degree in co-relation 373535. Up to 114724 conditions per place. [2023-08-04 07:18:08,189 INFO L140 encePairwiseOnDemand]: 200/206 looper letters, 79 selfloop transitions, 9 changer transitions 2/101 dead transitions. [2023-08-04 07:18:08,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 634 flow [2023-08-04 07:18:08,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:18:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:18:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 498 transitions. [2023-08-04 07:18:08,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6043689320388349 [2023-08-04 07:18:08,191 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 498 transitions. [2023-08-04 07:18:08,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 498 transitions. [2023-08-04 07:18:08,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:18:08,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 498 transitions. [2023-08-04 07:18:08,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.5) internal successors, (498), 4 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:08,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:08,193 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:08,193 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 237 flow. Second operand 4 states and 498 transitions. [2023-08-04 07:18:08,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 634 flow [2023-08-04 07:18:09,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 592 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:18:09,037 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 298 flow [2023-08-04 07:18:09,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-08-04 07:18:09,038 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2023-08-04 07:18:09,038 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 298 flow [2023-08-04 07:18:09,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.5) internal successors, (446), 4 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:09,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:18:09,039 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:18:09,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 07:18:09,039 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:18:09,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:18:09,039 INFO L85 PathProgramCache]: Analyzing trace with hash -380602927, now seen corresponding path program 1 times [2023-08-04 07:18:09,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:18:09,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863492609] [2023-08-04 07:18:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:18:09,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:18:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:18:09,189 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 07:18:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:18:09,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863492609] [2023-08-04 07:18:09,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863492609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:18:09,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:18:09,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 07:18:09,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249210467] [2023-08-04 07:18:09,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:18:09,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 07:18:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:18:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 07:18:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 07:18:09,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-04 07:18:09,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:09,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:18:09,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-04 07:18:09,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:18:35,838 INFO L124 PetriNetUnfolderBase]: 288325/378167 cut-off events. [2023-08-04 07:18:35,838 INFO L125 PetriNetUnfolderBase]: For 364061/364442 co-relation queries the response was YES. [2023-08-04 07:18:38,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050826 conditions, 378167 events. 288325/378167 cut-off events. For 364061/364442 co-relation queries the response was YES. Maximal size of possible extension queue 15588. Compared 2680437 event pairs, 98726 based on Foata normal form. 5072/366580 useless extension candidates. Maximal degree in co-relation 579911. Up to 159400 conditions per place. [2023-08-04 07:18:39,017 INFO L140 encePairwiseOnDemand]: 199/206 looper letters, 97 selfloop transitions, 30 changer transitions 6/144 dead transitions. [2023-08-04 07:18:39,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 144 transitions, 948 flow [2023-08-04 07:18:39,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 07:18:39,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 07:18:39,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 628 transitions. [2023-08-04 07:18:39,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6097087378640776 [2023-08-04 07:18:39,019 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 628 transitions. [2023-08-04 07:18:39,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 628 transitions. [2023-08-04 07:18:39,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:18:39,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 628 transitions. [2023-08-04 07:18:39,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:39,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:39,021 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:39,021 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 298 flow. Second operand 5 states and 628 transitions. [2023-08-04 07:18:39,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 144 transitions, 948 flow [2023-08-04 07:18:39,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 144 transitions, 939 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:18:39,373 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 607 flow [2023-08-04 07:18:39,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=607, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-08-04 07:18:39,373 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2023-08-04 07:18:39,373 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 607 flow [2023-08-04 07:18:39,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:39,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:18:39,374 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:18:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 07:18:39,374 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:18:39,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:18:39,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1761185871, now seen corresponding path program 1 times [2023-08-04 07:18:39,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:18:39,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005416886] [2023-08-04 07:18:39,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:18:39,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:18:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:18:39,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 07:18:39,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:18:39,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005416886] [2023-08-04 07:18:39,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005416886] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:18:39,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:18:39,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:18:39,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489394786] [2023-08-04 07:18:39,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:18:39,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:18:39,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:18:39,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:18:39,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:18:39,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 206 [2023-08-04 07:18:39,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:18:39,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:18:39,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 206 [2023-08-04 07:18:39,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:18:40,453 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([605] L746-->P1EXIT: Formula: (and (= |v_P1Thread2of2ForFork1_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_94 1) v_~__unbuffered_cnt~0_93) (= |v_P1Thread2of2ForFork1_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_94} OutVars{P1Thread2of2ForFork1_#res.base=|v_P1Thread2of2ForFork1_#res.base_7|, P1Thread2of2ForFork1_#res.offset=|v_P1Thread2of2ForFork1_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_93} AuxVars[] AssignedVars[P1Thread2of2ForFork1_#res.base, P1Thread2of2ForFork1_#res.offset, ~__unbuffered_cnt~0][47], [30#L785-5true, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, 451#(= 0 |ULTIMATE.start_main_~asdf~2#1|), P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 627#true, 15#L731true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 449#true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), 610#(= ~__unbuffered_p2_EAX~0 0), Black: 618#(= ~x~0 1), 616#true, P2Thread1of2ForFork2NotInUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:40,453 INFO L294 olderBase$Statistics]: this new event has 29 ancestors and is not cut-off event [2023-08-04 07:18:40,453 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is not cut-off event [2023-08-04 07:18:40,453 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is not cut-off event [2023-08-04 07:18:40,453 INFO L297 olderBase$Statistics]: existing Event has 29 ancestors and is not cut-off event [2023-08-04 07:18:41,107 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([605] L746-->P1EXIT: Formula: (and (= |v_P1Thread2of2ForFork1_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_94 1) v_~__unbuffered_cnt~0_93) (= |v_P1Thread2of2ForFork1_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_94} OutVars{P1Thread2of2ForFork1_#res.base=|v_P1Thread2of2ForFork1_#res.base_7|, P1Thread2of2ForFork1_#res.offset=|v_P1Thread2of2ForFork1_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_93} AuxVars[] AssignedVars[P1Thread2of2ForFork1_#res.base, P1Thread2of2ForFork1_#res.offset, ~__unbuffered_cnt~0][47], [113#P1EXITtrue, P0Thread1of2ForFork0InUse, 451#(= 0 |ULTIMATE.start_main_~asdf~2#1|), P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 627#true, 15#L731true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 449#true, 68#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), 610#(= ~__unbuffered_p2_EAX~0 0), Black: 618#(= ~x~0 1), 35#L785-6true, 616#true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:41,107 INFO L294 olderBase$Statistics]: this new event has 30 ancestors and is not cut-off event [2023-08-04 07:18:41,107 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is not cut-off event [2023-08-04 07:18:41,107 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is not cut-off event [2023-08-04 07:18:41,108 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is not cut-off event [2023-08-04 07:18:41,108 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([585] $Ultimate##0-->L758: Formula: (and (= v_~x~0_49 v_~__unbuffered_p2_EAX~0_32) (= v_P2Thread1of2ForFork2_~arg.base_5 |v_P2Thread1of2ForFork2_#in~arg.base_5|) (= |v_P2Thread1of2ForFork2_#in~arg.offset_5| v_P2Thread1of2ForFork2_~arg.offset_5)) InVars {P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~x~0=v_~x~0_49} OutVars{P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_~arg.base=v_P2Thread1of2ForFork2_~arg.base_5, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_32, ~x~0=v_~x~0_49, P2Thread1of2ForFork2_~arg.offset=v_P2Thread1of2ForFork2_~arg.offset_5} AuxVars[] AssignedVars[P2Thread1of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread1of2ForFork2_~arg.offset][69], [P0Thread1of2ForFork0InUse, 451#(= 0 |ULTIMATE.start_main_~asdf~2#1|), P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 94#L758true, 15#L731true, 629#(= ~__unbuffered_cnt~0 0), Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 449#true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 610#(= ~__unbuffered_p2_EAX~0 0), Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), Black: 618#(= ~x~0 1), 35#L785-6true, 616#true, 93#L746true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:41,108 INFO L294 olderBase$Statistics]: this new event has 30 ancestors and is not cut-off event [2023-08-04 07:18:41,108 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is not cut-off event [2023-08-04 07:18:41,108 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is not cut-off event [2023-08-04 07:18:41,108 INFO L297 olderBase$Statistics]: existing Event has 30 ancestors and is not cut-off event [2023-08-04 07:18:42,641 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([605] L746-->P1EXIT: Formula: (and (= |v_P1Thread2of2ForFork1_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_94 1) v_~__unbuffered_cnt~0_93) (= |v_P1Thread2of2ForFork1_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_94} OutVars{P1Thread2of2ForFork1_#res.base=|v_P1Thread2of2ForFork1_#res.base_7|, P1Thread2of2ForFork1_#res.offset=|v_P1Thread2of2ForFork1_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_93} AuxVars[] AssignedVars[P1Thread2of2ForFork1_#res.base, P1Thread2of2ForFork1_#res.offset, ~__unbuffered_cnt~0][47], [113#P1EXITtrue, P0Thread1of2ForFork0InUse, 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread2of2ForFork0InUse, 2#L785-11true, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 627#true, 15#L731true, Black: 449#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 68#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), 610#(= ~__unbuffered_p2_EAX~0 0), Black: 618#(= ~x~0 1), 616#true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:42,641 INFO L294 olderBase$Statistics]: this new event has 32 ancestors and is not cut-off event [2023-08-04 07:18:42,641 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-04 07:18:42,641 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-04 07:18:42,641 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-04 07:18:42,642 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([585] $Ultimate##0-->L758: Formula: (and (= v_~x~0_49 v_~__unbuffered_p2_EAX~0_32) (= v_P2Thread1of2ForFork2_~arg.base_5 |v_P2Thread1of2ForFork2_#in~arg.base_5|) (= |v_P2Thread1of2ForFork2_#in~arg.offset_5| v_P2Thread1of2ForFork2_~arg.offset_5)) InVars {P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~x~0=v_~x~0_49} OutVars{P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_~arg.base=v_P2Thread1of2ForFork2_~arg.base_5, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_32, ~x~0=v_~x~0_49, P2Thread1of2ForFork2_~arg.offset=v_P2Thread1of2ForFork2_~arg.offset_5} AuxVars[] AssignedVars[P2Thread1of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread1of2ForFork2_~arg.offset][69], [452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 2#L785-11true, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 94#L758true, 15#L731true, 629#(= ~__unbuffered_cnt~0 0), Black: 449#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 610#(= ~__unbuffered_p2_EAX~0 0), Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), Black: 618#(= ~x~0 1), 616#true, 93#L746true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:42,642 INFO L294 olderBase$Statistics]: this new event has 32 ancestors and is not cut-off event [2023-08-04 07:18:42,642 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-04 07:18:42,642 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-04 07:18:42,642 INFO L297 olderBase$Statistics]: existing Event has 32 ancestors and is not cut-off event [2023-08-04 07:18:44,214 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([605] L746-->P1EXIT: Formula: (and (= |v_P1Thread2of2ForFork1_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_94 1) v_~__unbuffered_cnt~0_93) (= |v_P1Thread2of2ForFork1_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_94} OutVars{P1Thread2of2ForFork1_#res.base=|v_P1Thread2of2ForFork1_#res.base_7|, P1Thread2of2ForFork1_#res.offset=|v_P1Thread2of2ForFork1_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_93} AuxVars[] AssignedVars[P1Thread2of2ForFork1_#res.base, P1Thread2of2ForFork1_#res.offset, ~__unbuffered_cnt~0][47], [113#P1EXITtrue, 30#L785-5true, P0Thread1of2ForFork0InUse, 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 627#true, 15#L731true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 449#true, 68#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), 610#(= ~__unbuffered_p2_EAX~0 0), Black: 618#(= ~x~0 1), 616#true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:44,214 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is not cut-off event [2023-08-04 07:18:44,214 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-04 07:18:44,214 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-04 07:18:44,215 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-04 07:18:44,216 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([585] $Ultimate##0-->L758: Formula: (and (= v_~x~0_49 v_~__unbuffered_p2_EAX~0_32) (= v_P2Thread1of2ForFork2_~arg.base_5 |v_P2Thread1of2ForFork2_#in~arg.base_5|) (= |v_P2Thread1of2ForFork2_#in~arg.offset_5| v_P2Thread1of2ForFork2_~arg.offset_5)) InVars {P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~x~0=v_~x~0_49} OutVars{P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_~arg.base=v_P2Thread1of2ForFork2_~arg.base_5, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_32, ~x~0=v_~x~0_49, P2Thread1of2ForFork2_~arg.offset=v_P2Thread1of2ForFork2_~arg.offset_5} AuxVars[] AssignedVars[P2Thread1of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread1of2ForFork2_~arg.offset][69], [30#L785-5true, 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 94#L758true, 15#L731true, 629#(= ~__unbuffered_cnt~0 0), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 449#true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 610#(= ~__unbuffered_p2_EAX~0 0), Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), Black: 618#(= ~x~0 1), 616#true, 93#L746true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:44,216 INFO L294 olderBase$Statistics]: this new event has 33 ancestors and is not cut-off event [2023-08-04 07:18:44,216 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-04 07:18:44,216 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-04 07:18:44,216 INFO L297 olderBase$Statistics]: existing Event has 33 ancestors and is not cut-off event [2023-08-04 07:18:44,216 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([585] $Ultimate##0-->L758: Formula: (and (= v_~x~0_49 v_~__unbuffered_p2_EAX~0_32) (= v_P2Thread1of2ForFork2_~arg.base_5 |v_P2Thread1of2ForFork2_#in~arg.base_5|) (= |v_P2Thread1of2ForFork2_#in~arg.offset_5| v_P2Thread1of2ForFork2_~arg.offset_5)) InVars {P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~x~0=v_~x~0_49} OutVars{P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_~arg.base=v_P2Thread1of2ForFork2_~arg.base_5, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_32, ~x~0=v_~x~0_49, P2Thread1of2ForFork2_~arg.offset=v_P2Thread1of2ForFork2_~arg.offset_5} AuxVars[] AssignedVars[P2Thread1of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread1of2ForFork2_~arg.offset][69], [P2Thread2of2ForFork2InUse, 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 94#L758true, 15#L731true, 629#(= ~__unbuffered_cnt~0 0), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 449#true, 98#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 610#(= ~__unbuffered_p2_EAX~0 0), Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), Black: 618#(= ~x~0 1), 35#L785-6true, 616#true, 93#L746true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:44,217 INFO L294 olderBase$Statistics]: this new event has 34 ancestors and is cut-off event [2023-08-04 07:18:44,217 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-04 07:18:44,217 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-04 07:18:44,217 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is cut-off event [2023-08-04 07:18:46,089 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([605] L746-->P1EXIT: Formula: (and (= |v_P1Thread2of2ForFork1_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_94 1) v_~__unbuffered_cnt~0_93) (= |v_P1Thread2of2ForFork1_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_94} OutVars{P1Thread2of2ForFork1_#res.base=|v_P1Thread2of2ForFork1_#res.base_7|, P1Thread2of2ForFork1_#res.offset=|v_P1Thread2of2ForFork1_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_93} AuxVars[] AssignedVars[P1Thread2of2ForFork1_#res.base, P1Thread2of2ForFork1_#res.offset, ~__unbuffered_cnt~0][47], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 627#true, 15#L731true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 449#true, 98#$Ultimate##0true, 68#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), 610#(= ~__unbuffered_p2_EAX~0 0), Black: 618#(= ~x~0 1), 35#L785-6true, 616#true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:46,089 INFO L294 olderBase$Statistics]: this new event has 34 ancestors and is not cut-off event [2023-08-04 07:18:46,089 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-04 07:18:46,090 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-04 07:18:46,090 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-04 07:18:46,091 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([593] $Ultimate##0-->L758: Formula: (and (= v_~x~0_51 v_~__unbuffered_p2_EAX~0_34) (= v_P2Thread2of2ForFork2_~arg.base_5 |v_P2Thread2of2ForFork2_#in~arg.base_5|) (= |v_P2Thread2of2ForFork2_#in~arg.offset_5| v_P2Thread2of2ForFork2_~arg.offset_5)) InVars {P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_5|, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_5|, ~x~0=v_~x~0_51} OutVars{P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_5|, P2Thread2of2ForFork2_~arg.base=v_P2Thread2of2ForFork2_~arg.base_5, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_34, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_5|, ~x~0=v_~x~0_51, P2Thread2of2ForFork2_~arg.offset=v_P2Thread2of2ForFork2_~arg.offset_5} AuxVars[] AssignedVars[P2Thread2of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread2of2ForFork2_~arg.offset][108], [P2Thread2of2ForFork2InUse, 111#L758true, 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 15#L731true, 629#(= ~__unbuffered_cnt~0 0), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 449#true, 68#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 610#(= ~__unbuffered_p2_EAX~0 0), Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), Black: 618#(= ~x~0 1), 35#L785-6true, 616#true, 93#L746true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:46,091 INFO L294 olderBase$Statistics]: this new event has 34 ancestors and is not cut-off event [2023-08-04 07:18:46,096 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-04 07:18:46,096 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-04 07:18:46,096 INFO L297 olderBase$Statistics]: existing Event has 34 ancestors and is not cut-off event [2023-08-04 07:18:48,327 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([585] $Ultimate##0-->L758: Formula: (and (= v_~x~0_49 v_~__unbuffered_p2_EAX~0_32) (= v_P2Thread1of2ForFork2_~arg.base_5 |v_P2Thread1of2ForFork2_#in~arg.base_5|) (= |v_P2Thread1of2ForFork2_#in~arg.offset_5| v_P2Thread1of2ForFork2_~arg.offset_5)) InVars {P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~x~0=v_~x~0_49} OutVars{P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_~arg.base=v_P2Thread1of2ForFork2_~arg.base_5, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_32, ~x~0=v_~x~0_49, P2Thread1of2ForFork2_~arg.offset=v_P2Thread1of2ForFork2_~arg.offset_5} AuxVars[] AssignedVars[P2Thread1of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread1of2ForFork2_~arg.offset][69], [P2Thread2of2ForFork2InUse, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 2#L785-11true, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 94#L758true, 15#L731true, 629#(= ~__unbuffered_cnt~0 0), Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 98#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 610#(= ~__unbuffered_p2_EAX~0 0), Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), Black: 618#(= ~x~0 1), 616#true, 93#L746true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:48,328 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is cut-off event [2023-08-04 07:18:48,328 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-04 07:18:48,328 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-04 07:18:48,328 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is cut-off event [2023-08-04 07:18:50,906 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([605] L746-->P1EXIT: Formula: (and (= |v_P1Thread2of2ForFork1_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_94 1) v_~__unbuffered_cnt~0_93) (= |v_P1Thread2of2ForFork1_#res.offset_7| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_94} OutVars{P1Thread2of2ForFork1_#res.base=|v_P1Thread2of2ForFork1_#res.base_7|, P1Thread2of2ForFork1_#res.offset=|v_P1Thread2of2ForFork1_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_93} AuxVars[] AssignedVars[P1Thread2of2ForFork1_#res.base, P1Thread2of2ForFork1_#res.offset, ~__unbuffered_cnt~0][47], [P2Thread2of2ForFork2InUse, 113#P1EXITtrue, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 2#L785-11true, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 627#true, 15#L731true, Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 98#$Ultimate##0true, 68#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), 610#(= ~__unbuffered_p2_EAX~0 0), Black: 618#(= ~x~0 1), 616#true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:50,906 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is not cut-off event [2023-08-04 07:18:50,907 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-04 07:18:50,907 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-04 07:18:50,907 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-04 07:18:50,908 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([593] $Ultimate##0-->L758: Formula: (and (= v_~x~0_51 v_~__unbuffered_p2_EAX~0_34) (= v_P2Thread2of2ForFork2_~arg.base_5 |v_P2Thread2of2ForFork2_#in~arg.base_5|) (= |v_P2Thread2of2ForFork2_#in~arg.offset_5| v_P2Thread2of2ForFork2_~arg.offset_5)) InVars {P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_5|, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_5|, ~x~0=v_~x~0_51} OutVars{P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_5|, P2Thread2of2ForFork2_~arg.base=v_P2Thread2of2ForFork2_~arg.base_5, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_34, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_5|, ~x~0=v_~x~0_51, P2Thread2of2ForFork2_~arg.offset=v_P2Thread2of2ForFork2_~arg.offset_5} AuxVars[] AssignedVars[P2Thread2of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread2of2ForFork2_~arg.offset][108], [P2Thread2of2ForFork2InUse, 111#L758true, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 2#L785-11true, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, 66#L731true, Black: 140#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 15#L731true, 629#(= ~__unbuffered_cnt~0 0), Black: 452#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 68#$Ultimate##0true, Black: 603#(or (not (= ~__unbuffered_p2_EBX~0 0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 29#L746true, Black: 610#(= ~__unbuffered_p2_EAX~0 0), Black: 612#(and (= ~x~0 0) (= ~__unbuffered_p2_EAX~0 0)), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 621#(and (= ~__unbuffered_p2_EAX~0 1) (= ~x~0 1)), Black: 619#(= ~__unbuffered_p2_EAX~0 1), Black: 618#(= ~x~0 1), 616#true, 93#L746true, P2Thread1of2ForFork2InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 324#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 07:18:50,908 INFO L294 olderBase$Statistics]: this new event has 36 ancestors and is not cut-off event [2023-08-04 07:18:50,908 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-04 07:18:50,908 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-04 07:18:50,908 INFO L297 olderBase$Statistics]: existing Event has 36 ancestors and is not cut-off event [2023-08-04 07:19:01,547 INFO L124 PetriNetUnfolderBase]: 200417/270233 cut-off events. [2023-08-04 07:19:01,547 INFO L125 PetriNetUnfolderBase]: For 706280/722965 co-relation queries the response was YES. [2023-08-04 07:19:03,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868423 conditions, 270233 events. 200417/270233 cut-off events. For 706280/722965 co-relation queries the response was YES. Maximal size of possible extension queue 14365. Compared 2061449 event pairs, 43414 based on Foata normal form. 2992/253236 useless extension candidates. Maximal degree in co-relation 665575. Up to 230358 conditions per place. [2023-08-04 07:19:04,344 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 109 selfloop transitions, 7 changer transitions 4/143 dead transitions. [2023-08-04 07:19:04,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 143 transitions, 1286 flow [2023-08-04 07:19:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:19:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:19:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-08-04 07:19:04,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6132686084142395 [2023-08-04 07:19:04,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-08-04 07:19:04,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-08-04 07:19:04,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:19:04,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-08-04 07:19:04,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:19:04,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:19:04,348 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:19:04,348 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 607 flow. Second operand 3 states and 379 transitions. [2023-08-04 07:19:04,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 143 transitions, 1286 flow [2023-08-04 07:19:06,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 143 transitions, 1254 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-08-04 07:19:06,938 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 638 flow [2023-08-04 07:19:06,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2023-08-04 07:19:06,939 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2023-08-04 07:19:06,939 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 638 flow [2023-08-04 07:19:06,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:19:06,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:19:06,939 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:19:06,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 07:19:06,940 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:19:06,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:19:06,940 INFO L85 PathProgramCache]: Analyzing trace with hash 318184295, now seen corresponding path program 1 times [2023-08-04 07:19:06,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:19:06,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960929006] [2023-08-04 07:19:06,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:19:06,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:19:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:19:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:19:07,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:19:07,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960929006] [2023-08-04 07:19:07,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960929006] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:19:07,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220940988] [2023-08-04 07:19:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:19:07,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:19:07,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:19:07,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:19:07,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 07:19:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:19:07,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-04 07:19:07,144 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:19:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 07:19:07,323 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:19:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 07:19:07,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220940988] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:19:07,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:19:07,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-04 07:19:07,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338325711] [2023-08-04 07:19:07,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:19:07,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-04 07:19:07,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:19:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-04 07:19:07,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=92, Unknown=0, NotChecked=0, Total=156 [2023-08-04 07:19:07,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2023-08-04 07:19:07,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 638 flow. Second operand has 13 states, 13 states have (on average 98.92307692307692) internal successors, (1286), 13 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:19:07,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:19:07,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2023-08-04 07:19:07,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:19:47,263 INFO L124 PetriNetUnfolderBase]: 392344/504495 cut-off events. [2023-08-04 07:19:47,264 INFO L125 PetriNetUnfolderBase]: For 1068240/1068240 co-relation queries the response was YES. [2023-08-04 07:19:50,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1845443 conditions, 504495 events. 392344/504495 cut-off events. For 1068240/1068240 co-relation queries the response was YES. Maximal size of possible extension queue 17604. Compared 3381633 event pairs, 11015 based on Foata normal form. 10131/514588 useless extension candidates. Maximal degree in co-relation 1469484. Up to 184439 conditions per place. [2023-08-04 07:19:51,859 INFO L140 encePairwiseOnDemand]: 187/206 looper letters, 289 selfloop transitions, 300 changer transitions 18/610 dead transitions. [2023-08-04 07:19:51,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 610 transitions, 5347 flow [2023-08-04 07:19:51,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-04 07:19:51,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-04 07:19:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1771 transitions. [2023-08-04 07:19:51,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5731391585760518 [2023-08-04 07:19:51,863 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1771 transitions. [2023-08-04 07:19:51,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1771 transitions. [2023-08-04 07:19:51,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:19:51,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1771 transitions. [2023-08-04 07:19:51,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 118.06666666666666) internal successors, (1771), 15 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:19:51,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 206.0) internal successors, (3296), 16 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:19:51,870 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 206.0) internal successors, (3296), 16 states have internal predecessors, (3296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:19:51,870 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 638 flow. Second operand 15 states and 1771 transitions. [2023-08-04 07:19:51,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 610 transitions, 5347 flow [2023-08-04 07:20:56,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 610 transitions, 5266 flow, removed 30 selfloop flow, removed 1 redundant places. [2023-08-04 07:20:56,613 INFO L231 Difference]: Finished difference. Result has 103 places, 388 transitions, 3898 flow [2023-08-04 07:20:56,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=623, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3898, PETRI_PLACES=103, PETRI_TRANSITIONS=388} [2023-08-04 07:20:56,614 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 52 predicate places. [2023-08-04 07:20:56,614 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 388 transitions, 3898 flow [2023-08-04 07:20:56,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 98.92307692307692) internal successors, (1286), 13 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:20:56,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:20:56,614 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:20:56,631 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-04 07:20:56,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-04 07:20:56,818 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:20:56,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:20:56,818 INFO L85 PathProgramCache]: Analyzing trace with hash -788063325, now seen corresponding path program 1 times [2023-08-04 07:20:56,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:20:56,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709297210] [2023-08-04 07:20:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:20:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:20:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:20:56,939 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 07:20:56,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:20:56,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709297210] [2023-08-04 07:20:56,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709297210] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:20:56,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119268105] [2023-08-04 07:20:56,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:20:56,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:20:56,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:20:56,940 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:20:56,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 07:20:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:20:57,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-04 07:20:57,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:20:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:20:57,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:20:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:20:57,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119268105] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:20:57,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:20:57,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 8 [2023-08-04 07:20:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574228756] [2023-08-04 07:20:57,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:20:57,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 07:20:57,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:20:57,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 07:20:57,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-04 07:20:57,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 206 [2023-08-04 07:20:57,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 388 transitions, 3898 flow. Second operand has 8 states, 8 states have (on average 106.5) internal successors, (852), 8 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:20:57,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:20:57,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 206 [2023-08-04 07:20:57,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand