/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe015_power.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:24:40,335 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:24:40,381 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:24:40,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:24:40,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:24:40,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:24:40,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:24:40,420 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:24:40,420 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:24:40,421 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:24:40,421 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:24:40,421 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:24:40,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:24:40,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:24:40,427 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:24:40,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:24:40,430 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:24:40,433 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:24:40,433 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:24:40,433 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:24:40,433 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:24:40,434 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:24:40,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:24:40,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:24:40,434 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:24:40,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:24:40,435 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:24:40,435 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:24:40,435 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:24:40,436 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:24:40,436 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:24:40,436 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:24:40,436 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:24:40,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:24:40,437 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:24:40,437 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:24:40,437 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:24:40,437 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:24:40,437 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:24:40,438 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:24:40,438 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:24:40,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:24:40,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:24:40,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:24:40,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:24:40,643 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:24:40,643 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:24:40,644 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe015_power.oepc_bound2.i [2023-08-03 18:24:41,782 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:24:42,041 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:24:42,041 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe015_power.oepc_bound2.i [2023-08-03 18:24:42,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa012b52/4d557b70b3de494fb9d9ab27460a22ed/FLAGeed559eab [2023-08-03 18:24:42,078 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa012b52/4d557b70b3de494fb9d9ab27460a22ed [2023-08-03 18:24:42,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:24:42,084 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:24:42,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:24:42,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:24:42,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:24:42,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74323bb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42, skipping insertion in model container [2023-08-03 18:24:42,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,133 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:24:42,266 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_safe015_power.oepc_bound2.i[995,1008] [2023-08-03 18:24:42,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:24:42,493 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:24:42,508 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_safe015_power.oepc_bound2.i[995,1008] [2023-08-03 18:24:42,533 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:24:42,535 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:24:42,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:24:42,594 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:24:42,594 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:24:42,600 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:24:42,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42 WrapperNode [2023-08-03 18:24:42,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:24:42,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:24:42,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:24:42,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:24:42,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,629 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,656 INFO L138 Inliner]: procedures = 176, calls = 86, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 252 [2023-08-03 18:24:42,657 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:24:42,657 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:24:42,658 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:24:42,658 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:24:42,665 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,670 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,671 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,683 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,687 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:24:42,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:24:42,697 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:24:42,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:24:42,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (1/1) ... [2023-08-03 18:24:42,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:24:42,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:24:42,750 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) [2023-08-03 18:24:42,779 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 [2023-08-03 18:24:42,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 18:24:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:24:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:24:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:24:42,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:24:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:24:42,799 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:24:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:24:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:24:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:24:42,800 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:24:42,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:24:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:24:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:24:42,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:24:42,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:24:42,802 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:24:42,979 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:24:42,981 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:24:43,436 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:24:43,751 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:24:43,751 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:24:43,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:24:43 BoogieIcfgContainer [2023-08-03 18:24:43,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:24:43,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:24:43,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:24:43,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:24:43,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:24:42" (1/3) ... [2023-08-03 18:24:43,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fddb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:24:43, skipping insertion in model container [2023-08-03 18:24:43,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:24:42" (2/3) ... [2023-08-03 18:24:43,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fddb2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:24:43, skipping insertion in model container [2023-08-03 18:24:43,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:24:43" (3/3) ... [2023-08-03 18:24:43,765 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe015_power.oepc_bound2.i [2023-08-03 18:24:43,775 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:24:43,783 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:24:43,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 18:24:43,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:24:43,867 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:24:43,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 309 flow [2023-08-03 18:24:44,092 INFO L124 PetriNetUnfolderBase]: 30/468 cut-off events. [2023-08-03 18:24:44,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:24:44,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 468 events. 30/468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2003 event pairs, 0 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-08-03 18:24:44,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 147 transitions, 309 flow [2023-08-03 18:24:44,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 147 transitions, 309 flow [2023-08-03 18:24:44,111 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:24:44,130 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 147 transitions, 309 flow [2023-08-03 18:24:44,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 147 transitions, 309 flow [2023-08-03 18:24:44,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 309 flow [2023-08-03 18:24:44,201 INFO L124 PetriNetUnfolderBase]: 30/468 cut-off events. [2023-08-03 18:24:44,202 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:24:44,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 468 events. 30/468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2003 event pairs, 0 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-08-03 18:24:44,210 INFO L119 LiptonReduction]: Number of co-enabled transitions 2664 [2023-08-03 18:24:54,572 INFO L134 LiptonReduction]: Checked pairs total: 7139 [2023-08-03 18:24:54,572 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-03 18:24:54,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:24:54,589 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;@2deb8515, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:24:54,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-08-03 18:24:54,594 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:24:54,594 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2023-08-03 18:24:54,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:24:54,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:24:54,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:24:54,595 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 18:24:54,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:24:54,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1021932514, now seen corresponding path program 1 times [2023-08-03 18:24:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:24:54,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237462274] [2023-08-03 18:24:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:24:54,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:24:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:24:54,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:24:54,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:24:54,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237462274] [2023-08-03 18:24:54,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237462274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:24:54,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:24:54,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:24:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226125382] [2023-08-03 18:24:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:24:54,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:24:54,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:24:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:24:54,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:24:54,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 276 [2023-08-03 18:24:54,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 79 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:24:54,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:24:54,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 276 [2023-08-03 18:24:54,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:24:55,821 INFO L124 PetriNetUnfolderBase]: 2331/3605 cut-off events. [2023-08-03 18:24:55,822 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-03 18:24:55,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7273 conditions, 3605 events. 2331/3605 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 18637 event pairs, 1440 based on Foata normal form. 0/2929 useless extension candidates. Maximal degree in co-relation 7252. Up to 3520 conditions per place. [2023-08-03 18:24:55,848 INFO L140 encePairwiseOnDemand]: 273/276 looper letters, 30 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-03 18:24:55,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 151 flow [2023-08-03 18:24:55,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:24:55,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:24:55,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 405 transitions. [2023-08-03 18:24:55,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2023-08-03 18:24:55,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 405 transitions. [2023-08-03 18:24:55,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 405 transitions. [2023-08-03 18:24:55,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:24:55,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 405 transitions. [2023-08-03 18:24:55,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:24:55,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:24:55,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:24:55,888 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 79 flow. Second operand 3 states and 405 transitions. [2023-08-03 18:24:55,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 151 flow [2023-08-03 18:24:55,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:24:55,893 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 87 flow [2023-08-03 18:24:55,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-03 18:24:55,899 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-03 18:24:55,899 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 87 flow [2023-08-03 18:24:55,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:24:55,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:24:55,900 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:24:55,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:24:55,901 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-08-03 18:24:55,909 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:24:55,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1608803234, now seen corresponding path program 1 times [2023-08-03 18:24:55,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:24:55,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671055076] [2023-08-03 18:24:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:24:55,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:24:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:24:55,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:24:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:24:56,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:24:56,008 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:24:56,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2023-08-03 18:24:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2023-08-03 18:24:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2023-08-03 18:24:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2023-08-03 18:24:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 8 remaining) [2023-08-03 18:24:56,014 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 8 remaining) [2023-08-03 18:24:56,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 8 remaining) [2023-08-03 18:24:56,015 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 8 remaining) [2023-08-03 18:24:56,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:24:56,015 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:24:56,018 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:24:56,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:24:56,091 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:24:56,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 172 transitions, 380 flow [2023-08-03 18:24:56,256 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-03 18:24:56,256 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:24:56,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1403 events. 93/1403 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9558 event pairs, 0 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 1026. Up to 54 conditions per place. [2023-08-03 18:24:56,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 172 transitions, 380 flow [2023-08-03 18:24:56,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 172 transitions, 380 flow [2023-08-03 18:24:56,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:24:56,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 172 transitions, 380 flow [2023-08-03 18:24:56,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 172 transitions, 380 flow [2023-08-03 18:24:56,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 172 transitions, 380 flow [2023-08-03 18:24:56,421 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-03 18:24:56,421 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:24:56,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1403 events. 93/1403 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9558 event pairs, 0 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 1026. Up to 54 conditions per place. [2023-08-03 18:24:56,453 INFO L119 LiptonReduction]: Number of co-enabled transitions 6424 [2023-08-03 18:25:07,600 INFO L134 LiptonReduction]: Checked pairs total: 21964 [2023-08-03 18:25:07,600 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-08-03 18:25:07,602 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:25:07,603 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;@2deb8515, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:25:07,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-03 18:25:07,606 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:25:07,606 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-03 18:25:07,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:25:07,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:25:07,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:25:07,607 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 18:25:07,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:25:07,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1338884510, now seen corresponding path program 1 times [2023-08-03 18:25:07,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:25:07,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669573883] [2023-08-03 18:25:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:25:07,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:25:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:25:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:25:07,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:25:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669573883] [2023-08-03 18:25:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669573883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:25:07,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:25:07,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:25:07,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368090556] [2023-08-03 18:25:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:25:07,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:25:07,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:25:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:25:07,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:25:07,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 307 [2023-08-03 18:25:07,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:25:07,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:25:07,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 307 [2023-08-03 18:25:07,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:27:19,900 INFO L124 PetriNetUnfolderBase]: 694950/884305 cut-off events. [2023-08-03 18:27:19,901 INFO L125 PetriNetUnfolderBase]: For 15808/15808 co-relation queries the response was YES. [2023-08-03 18:27:21,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767647 conditions, 884305 events. 694950/884305 cut-off events. For 15808/15808 co-relation queries the response was YES. Maximal size of possible extension queue 19517. Compared 5779375 event pairs, 567528 based on Foata normal form. 0/737357 useless extension candidates. Maximal degree in co-relation 380703. Up to 864847 conditions per place. [2023-08-03 18:27:25,131 INFO L140 encePairwiseOnDemand]: 304/307 looper letters, 46 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-03 18:27:25,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 56 transitions, 244 flow [2023-08-03 18:27:25,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:27:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:27:25,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-03 18:27:25,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50271444082519 [2023-08-03 18:27:25,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-03 18:27:25,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-03 18:27:25,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:27:25,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-03 18:27:25,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:27:25,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:27:25,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:27:25,138 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 138 flow. Second operand 3 states and 463 transitions. [2023-08-03 18:27:25,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 56 transitions, 244 flow [2023-08-03 18:27:25,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 238 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:27:25,173 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 144 flow [2023-08-03 18:27:25,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-08-03 18:27:25,175 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-03 18:27:25,175 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 144 flow [2023-08-03 18:27:25,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:27:25,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:27:25,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:27:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:27:25,177 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2023-08-03 18:27:25,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:27:25,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1540287965, now seen corresponding path program 1 times [2023-08-03 18:27:25,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:27:25,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726093814] [2023-08-03 18:27:25,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:27:25,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:27:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:27:25,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:27:25,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:27:25,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726093814] [2023-08-03 18:27:25,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726093814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:27:25,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580822675] [2023-08-03 18:27:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:27:25,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:27:25,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:27:25,248 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) [2023-08-03 18:27:25,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 18:27:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:27:25,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:27:25,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:27:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:27:25,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:27:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:27:25,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580822675] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:27:25,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:27:25,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:27:25,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383632918] [2023-08-03 18:27:25,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:27:25,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:27:25,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:27:25,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:27:25,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:27:25,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 307 [2023-08-03 18:27:25,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:27:25,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:27:25,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 307 [2023-08-03 18:27:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand