/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/weaver_test-easy11.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 09:52:26,376 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 09:52:26,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 09:52:26,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 09:52:26,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 09:52:26,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 09:52:26,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 09:52:26,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 09:52:26,474 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 09:52:26,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 09:52:26,478 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 09:52:26,478 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 09:52:26,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 09:52:26,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 09:52:26,480 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 09:52:26,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 09:52:26,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 09:52:26,480 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 09:52:26,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 09:52:26,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 09:52:26,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 09:52:26,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 09:52:26,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 09:52:26,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 09:52:26,482 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 09:52:26,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 09:52:26,483 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 09:52:26,484 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 09:52:26,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 09:52:26,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 09:52:26,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 09:52:26,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 09:52:26,486 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 09:52:26,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 09:52:26,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 09:52:26,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 09:52:26,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 09:52:26,486 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 09:52:26,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 09:52:26,487 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 09:52:26,487 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 09:52:26,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 09:52:26,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 09:52:26,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 09:52:26,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 09:52:26,686 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 09:52:26,687 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 09:52:26,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy11.wvr_bound2.c [2023-08-04 09:52:27,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 09:52:28,095 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 09:52:28,095 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy11.wvr_bound2.c [2023-08-04 09:52:28,101 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd49fc852/b78d28037ba342e3b849ebda5119478a/FLAGa685eeee8 [2023-08-04 09:52:28,115 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd49fc852/b78d28037ba342e3b849ebda5119478a [2023-08-04 09:52:28,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 09:52:28,118 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 09:52:28,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 09:52:28,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 09:52:28,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 09:52:28,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f523085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28, skipping insertion in model container [2023-08-04 09:52:28,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,143 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 09:52:28,283 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy11.wvr_bound2.c[2167,2180] [2023-08-04 09:52:28,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 09:52:28,292 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 09:52:28,309 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_test-easy11.wvr_bound2.c[2167,2180] [2023-08-04 09:52:28,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 09:52:28,317 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 09:52:28,318 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 09:52:28,323 INFO L206 MainTranslator]: Completed translation [2023-08-04 09:52:28,324 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28 WrapperNode [2023-08-04 09:52:28,324 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 09:52:28,325 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 09:52:28,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 09:52:28,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 09:52:28,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,337 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,353 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 86 [2023-08-04 09:52:28,354 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 09:52:28,354 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 09:52:28,354 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 09:52:28,355 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 09:52:28,362 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,362 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,368 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,368 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,373 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,377 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,378 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,379 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,381 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 09:52:28,382 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 09:52:28,382 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 09:52:28,382 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 09:52:28,383 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (1/1) ... [2023-08-04 09:52:28,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 09:52:28,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:28,414 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 09:52:28,440 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 09:52:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 09:52:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 09:52:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 09:52:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 09:52:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 09:52:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 09:52:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 09:52:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 09:52:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 09:52:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 09:52:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 09:52:28,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 09:52:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 09:52:28,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 09:52:28,458 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 09:52:28,558 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 09:52:28,560 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 09:52:28,787 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 09:52:28,796 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 09:52:28,796 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-04 09:52:28,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:52:28 BoogieIcfgContainer [2023-08-04 09:52:28,800 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 09:52:28,805 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 09:52:28,805 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 09:52:28,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 09:52:28,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 09:52:28" (1/3) ... [2023-08-04 09:52:28,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b58e0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:52:28, skipping insertion in model container [2023-08-04 09:52:28,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 09:52:28" (2/3) ... [2023-08-04 09:52:28,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b58e0db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 09:52:28, skipping insertion in model container [2023-08-04 09:52:28,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 09:52:28" (3/3) ... [2023-08-04 09:52:28,812 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_test-easy11.wvr_bound2.c [2023-08-04 09:52:28,819 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 09:52:28,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 09:52:28,826 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 09:52:28,826 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 09:52:28,882 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-04 09:52:28,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:28,996 INFO L124 PetriNetUnfolderBase]: 33/252 cut-off events. [2023-08-04 09:52:28,996 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 09:52:29,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 252 events. 33/252 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 882 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 135. Up to 8 conditions per place. [2023-08-04 09:52:29,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:29,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:29,016 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 09:52:29,031 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:29,037 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:29,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:29,112 INFO L124 PetriNetUnfolderBase]: 33/252 cut-off events. [2023-08-04 09:52:29,113 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 09:52:29,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 252 events. 33/252 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 882 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 135. Up to 8 conditions per place. [2023-08-04 09:52:29,119 INFO L119 LiptonReduction]: Number of co-enabled transitions 2662 [2023-08-04 09:52:31,201 INFO L134 LiptonReduction]: Checked pairs total: 2946 [2023-08-04 09:52:31,202 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-04 09:52:31,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 09:52:31,224 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;@7eee96b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 09:52:31,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 09:52:31,228 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 09:52:31,228 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-04 09:52:31,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 09:52:31,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:31,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 09:52:31,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:31,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:31,234 INFO L85 PathProgramCache]: Analyzing trace with hash 407209362, now seen corresponding path program 1 times [2023-08-04 09:52:31,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:31,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944045891] [2023-08-04 09:52:31,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:31,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:31,412 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 09:52:31,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944045891] [2023-08-04 09:52:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944045891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:52:31,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 09:52:31,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 09:52:31,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665358531] [2023-08-04 09:52:31,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:52:31,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:52:31,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:31,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:52:31,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 09:52:31,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 204 [2023-08-04 09:52:31,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 30 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 09:52:31,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:31,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 204 [2023-08-04 09:52:31,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:31,588 INFO L124 PetriNetUnfolderBase]: 205/363 cut-off events. [2023-08-04 09:52:31,588 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-04 09:52:31,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 740 conditions, 363 events. 205/363 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1200 event pairs, 56 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 594. Up to 338 conditions per place. [2023-08-04 09:52:31,594 INFO L140 encePairwiseOnDemand]: 200/204 looper letters, 26 selfloop transitions, 2 changer transitions 3/33 dead transitions. [2023-08-04 09:52:31,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 33 transitions, 146 flow [2023-08-04 09:52:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:52:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:52:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-04 09:52:31,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016339869281046 [2023-08-04 09:52:31,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-04 09:52:31,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-04 09:52:31,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:31,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-04 09:52:31,626 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 09:52:31,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 09:52:31,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 09:52:31,631 INFO L175 Difference]: Start difference. First operand has 29 places, 30 transitions, 82 flow. Second operand 3 states and 307 transitions. [2023-08-04 09:52:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 33 transitions, 146 flow [2023-08-04 09:52:31,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 09:52:31,636 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 80 flow [2023-08-04 09:52:31,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-08-04 09:52:31,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-04 09:52:31,641 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 80 flow [2023-08-04 09:52:31,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 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 09:52:31,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:31,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 09:52:31,642 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:31,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:31,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1030576878, now seen corresponding path program 1 times [2023-08-04 09:52:31,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:31,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335050686] [2023-08-04 09:52:31,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:31,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:31,752 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 09:52:31,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335050686] [2023-08-04 09:52:31,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335050686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913572160] [2023-08-04 09:52:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:31,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:31,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:31,756 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 09:52:31,763 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 09:52:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:31,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 09:52:31,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:31,827 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 09:52:31,827 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 09:52:31,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913572160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:52:31,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 09:52:31,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 09:52:31,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536350909] [2023-08-04 09:52:31,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:52:31,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:52:31,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:52:31,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:31,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 204 [2023-08-04 09:52:31,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 80 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 09:52:31,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:31,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 204 [2023-08-04 09:52:31,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:31,929 INFO L124 PetriNetUnfolderBase]: 202/354 cut-off events. [2023-08-04 09:52:31,930 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-04 09:52:31,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 734 conditions, 354 events. 202/354 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1074 event pairs, 61 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 701. Up to 308 conditions per place. [2023-08-04 09:52:31,933 INFO L140 encePairwiseOnDemand]: 201/204 looper letters, 29 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-04 09:52:31,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 158 flow [2023-08-04 09:52:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:52:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:52:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-04 09:52:31,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2023-08-04 09:52:31,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-04 09:52:31,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-04 09:52:31,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:31,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-04 09:52:31,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 09:52:31,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 09:52:31,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 09:52:31,950 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 80 flow. Second operand 3 states and 309 transitions. [2023-08-04 09:52:31,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 158 flow [2023-08-04 09:52:31,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 34 transitions, 148 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 09:52:31,953 INFO L231 Difference]: Finished difference. Result has 28 places, 27 transitions, 78 flow [2023-08-04 09:52:31,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=28, PETRI_TRANSITIONS=27} [2023-08-04 09:52:31,954 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2023-08-04 09:52:31,954 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 27 transitions, 78 flow [2023-08-04 09:52:31,954 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 09:52:31,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:31,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:31,960 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 09:52:32,160 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 09:52:32,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:32,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:32,161 INFO L85 PathProgramCache]: Analyzing trace with hash -540343665, now seen corresponding path program 1 times [2023-08-04 09:52:32,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:32,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518101502] [2023-08-04 09:52:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:32,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:32,280 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 09:52:32,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:32,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518101502] [2023-08-04 09:52:32,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518101502] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:32,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842566213] [2023-08-04 09:52:32,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:32,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:32,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:32,295 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 09:52:32,296 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 09:52:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:32,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 09:52:32,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:32,355 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 09:52:32,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 09:52:32,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842566213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:52:32,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 09:52:32,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 09:52:32,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749081925] [2023-08-04 09:52:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:52:32,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:52:32,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:32,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:52:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:32,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 204 [2023-08-04 09:52:32,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 27 transitions, 78 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 09:52:32,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:32,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 204 [2023-08-04 09:52:32,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:32,438 INFO L124 PetriNetUnfolderBase]: 136/249 cut-off events. [2023-08-04 09:52:32,438 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-04 09:52:32,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 249 events. 136/249 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 640 event pairs, 58 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 186. Up to 176 conditions per place. [2023-08-04 09:52:32,440 INFO L140 encePairwiseOnDemand]: 201/204 looper letters, 33 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-04 09:52:32,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 37 transitions, 172 flow [2023-08-04 09:52:32,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:52:32,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:52:32,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-04 09:52:32,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5098039215686274 [2023-08-04 09:52:32,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-04 09:52:32,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-04 09:52:32,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:32,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-04 09:52:32,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 09:52:32,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 09:52:32,447 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 09:52:32,447 INFO L175 Difference]: Start difference. First operand has 28 places, 27 transitions, 78 flow. Second operand 3 states and 312 transitions. [2023-08-04 09:52:32,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 37 transitions, 172 flow [2023-08-04 09:52:32,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 37 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 09:52:32,449 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 86 flow [2023-08-04 09:52:32,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-08-04 09:52:32,450 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 0 predicate places. [2023-08-04 09:52:32,450 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 86 flow [2023-08-04 09:52:32,451 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 09:52:32,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:32,451 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 09:52:32,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 09:52:32,657 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 09:52:32,657 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:32,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:32,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1451160872, now seen corresponding path program 1 times [2023-08-04 09:52:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659072596] [2023-08-04 09:52:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:32,732 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 09:52:32,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659072596] [2023-08-04 09:52:32,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659072596] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:32,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411203417] [2023-08-04 09:52:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:32,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:32,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:32,734 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 09:52:32,758 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 09:52:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:32,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 09:52:32,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:32,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 09:52:32,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 09:52:32,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411203417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:52:32,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 09:52:32,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 09:52:32,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284345725] [2023-08-04 09:52:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:52:32,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:52:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:32,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:52:32,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:32,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 204 [2023-08-04 09:52:32,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 09:52:32,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:32,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 204 [2023-08-04 09:52:32,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:32,884 INFO L124 PetriNetUnfolderBase]: 129/238 cut-off events. [2023-08-04 09:52:32,884 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-04 09:52:32,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543 conditions, 238 events. 129/238 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 585 event pairs, 75 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 229. Up to 203 conditions per place. [2023-08-04 09:52:32,888 INFO L140 encePairwiseOnDemand]: 201/204 looper letters, 29 selfloop transitions, 2 changer transitions 2/35 dead transitions. [2023-08-04 09:52:32,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 35 transitions, 166 flow [2023-08-04 09:52:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:52:32,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:52:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 309 transitions. [2023-08-04 09:52:32,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5049019607843137 [2023-08-04 09:52:32,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 309 transitions. [2023-08-04 09:52:32,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 309 transitions. [2023-08-04 09:52:32,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:32,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 309 transitions. [2023-08-04 09:52:32,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 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 09:52:32,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 09:52:32,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 204.0) internal successors, (816), 4 states have internal predecessors, (816), 0 states have call successors, (0), 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 09:52:32,898 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 86 flow. Second operand 3 states and 309 transitions. [2023-08-04 09:52:32,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 35 transitions, 166 flow [2023-08-04 09:52:32,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 35 transitions, 164 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 09:52:32,901 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 88 flow [2023-08-04 09:52:32,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2023-08-04 09:52:32,902 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-04 09:52:32,902 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 88 flow [2023-08-04 09:52:32,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 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 09:52:32,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:32,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:32,912 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 09:52:33,110 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 09:52:33,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:33,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:33,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1242301532, now seen corresponding path program 1 times [2023-08-04 09:52:33,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:33,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927583718] [2023-08-04 09:52:33,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:33,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:33,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 09:52:33,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:33,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927583718] [2023-08-04 09:52:33,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927583718] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:33,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735659121] [2023-08-04 09:52:33,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:33,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:33,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:33,210 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 09:52:33,212 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 09:52:33,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:33,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 09:52:33,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 09:52:33,315 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 09:52:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 09:52:33,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735659121] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 09:52:33,344 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 09:52:33,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 09:52:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455839487] [2023-08-04 09:52:33,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 09:52:33,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 09:52:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 09:52:33,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:33,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 204 [2023-08-04 09:52:33,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 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 09:52:33,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:33,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 204 [2023-08-04 09:52:33,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:33,373 INFO L124 PetriNetUnfolderBase]: 7/18 cut-off events. [2023-08-04 09:52:33,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 09:52:33,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 18 events. 7/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 3/18 useless extension candidates. Maximal degree in co-relation 40. Up to 12 conditions per place. [2023-08-04 09:52:33,374 INFO L140 encePairwiseOnDemand]: 201/204 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-04 09:52:33,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 11 transitions, 48 flow [2023-08-04 09:52:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 09:52:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 09:52:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2023-08-04 09:52:33,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46078431372549017 [2023-08-04 09:52:33,377 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2023-08-04 09:52:33,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2023-08-04 09:52:33,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:33,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2023-08-04 09:52:33,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 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 09:52:33,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 0 states have call successors, (0), 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 09:52:33,381 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 204.0) internal successors, (1020), 5 states have internal predecessors, (1020), 0 states have call successors, (0), 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 09:52:33,381 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 88 flow. Second operand 4 states and 376 transitions. [2023-08-04 09:52:33,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 11 transitions, 48 flow [2023-08-04 09:52:33,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 09:52:33,381 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-04 09:52:33,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=204, PETRI_DIFFERENCE_MINUEND_FLOW=16, PETRI_DIFFERENCE_MINUEND_PLACES=13, 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=16, PETRI_TRANSITIONS=0} [2023-08-04 09:52:33,384 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -13 predicate places. [2023-08-04 09:52:33,384 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-04 09:52:33,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 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 09:52:33,387 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 09:52:33,397 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 09:52:33,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:33,593 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 09:52:33,595 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 09:52:33,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:33,624 INFO L124 PetriNetUnfolderBase]: 33/252 cut-off events. [2023-08-04 09:52:33,625 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 09:52:33,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 252 events. 33/252 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 882 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 135. Up to 8 conditions per place. [2023-08-04 09:52:33,625 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:33,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:33,627 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 09:52:33,627 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:33,628 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:33,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 111 transitions, 244 flow [2023-08-04 09:52:33,648 INFO L124 PetriNetUnfolderBase]: 33/252 cut-off events. [2023-08-04 09:52:33,648 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 09:52:33,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 252 events. 33/252 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 882 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 135. Up to 8 conditions per place. [2023-08-04 09:52:33,651 INFO L119 LiptonReduction]: Number of co-enabled transitions 2662 [2023-08-04 09:52:35,573 INFO L134 LiptonReduction]: Checked pairs total: 3094 [2023-08-04 09:52:35,573 INFO L136 LiptonReduction]: Total number of compositions: 93 [2023-08-04 09:52:35,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 09:52:35,575 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;@7eee96b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 09:52:35,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 09:52:35,578 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 09:52:35,578 INFO L124 PetriNetUnfolderBase]: 2/26 cut-off events. [2023-08-04 09:52:35,578 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 09:52:35,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:35,578 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 09:52:35,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 09:52:35,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1722692656, now seen corresponding path program 1 times [2023-08-04 09:52:35,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:35,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941607418] [2023-08-04 09:52:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:35,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 09:52:35,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 09:52:35,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 09:52:35,614 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 09:52:35,614 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 09:52:35,614 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 09:52:35,614 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 09:52:35,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 09:52:35,615 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 09:52:35,615 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-04 09:52:35,616 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 09:52:35,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 09:52:35,633 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-04 09:52:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 139 transitions, 326 flow [2023-08-04 09:52:35,693 INFO L124 PetriNetUnfolderBase]: 134/832 cut-off events. [2023-08-04 09:52:35,693 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 09:52:35,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 832 events. 134/832 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4375 event pairs, 2 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 490. Up to 32 conditions per place. [2023-08-04 09:52:35,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 139 transitions, 326 flow [2023-08-04 09:52:35,700 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 139 transitions, 326 flow [2023-08-04 09:52:35,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 09:52:35,701 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 139 transitions, 326 flow [2023-08-04 09:52:35,701 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 139 transitions, 326 flow [2023-08-04 09:52:35,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 139 transitions, 326 flow [2023-08-04 09:52:35,760 INFO L124 PetriNetUnfolderBase]: 134/832 cut-off events. [2023-08-04 09:52:35,761 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2023-08-04 09:52:35,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 929 conditions, 832 events. 134/832 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4375 event pairs, 2 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 490. Up to 32 conditions per place. [2023-08-04 09:52:35,780 INFO L119 LiptonReduction]: Number of co-enabled transitions 6732 [2023-08-04 09:52:37,823 INFO L134 LiptonReduction]: Checked pairs total: 8940 [2023-08-04 09:52:37,823 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-04 09:52:37,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 09:52:37,826 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;@7eee96b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 09:52:37,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 09:52:37,828 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 09:52:37,828 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-04 09:52:37,828 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 09:52:37,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:37,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 09:52:37,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:37,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:37,829 INFO L85 PathProgramCache]: Analyzing trace with hash 760054736, now seen corresponding path program 1 times [2023-08-04 09:52:37,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:37,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225294040] [2023-08-04 09:52:37,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:37,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:37,864 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 09:52:37,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:37,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225294040] [2023-08-04 09:52:37,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225294040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:52:37,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 09:52:37,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 09:52:37,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012099680] [2023-08-04 09:52:37,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:52:37,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:52:37,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:52:37,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 09:52:37,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 249 [2023-08-04 09:52:37,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 136 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 09:52:37,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:37,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 249 [2023-08-04 09:52:37,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:38,486 INFO L124 PetriNetUnfolderBase]: 6653/9167 cut-off events. [2023-08-04 09:52:38,486 INFO L125 PetriNetUnfolderBase]: For 1016/1016 co-relation queries the response was YES. [2023-08-04 09:52:38,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18683 conditions, 9167 events. 6653/9167 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 40584 event pairs, 3024 based on Foata normal form. 0/6369 useless extension candidates. Maximal degree in co-relation 5724. Up to 8772 conditions per place. [2023-08-04 09:52:38,538 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 40 selfloop transitions, 2 changer transitions 2/48 dead transitions. [2023-08-04 09:52:38,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 48 transitions, 228 flow [2023-08-04 09:52:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:52:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:52:38,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2023-08-04 09:52:38,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5087014725568942 [2023-08-04 09:52:38,540 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2023-08-04 09:52:38,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2023-08-04 09:52:38,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:38,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2023-08-04 09:52:38,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 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 09:52:38,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:52:38,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:52:38,544 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 136 flow. Second operand 3 states and 380 transitions. [2023-08-04 09:52:38,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 48 transitions, 228 flow [2023-08-04 09:52:38,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 48 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 09:52:38,550 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 134 flow [2023-08-04 09:52:38,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-04 09:52:38,552 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-04 09:52:38,552 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 134 flow [2023-08-04 09:52:38,553 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 09:52:38,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:38,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:38,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 09:52:38,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:38,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:38,554 INFO L85 PathProgramCache]: Analyzing trace with hash -153907015, now seen corresponding path program 1 times [2023-08-04 09:52:38,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:38,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824363887] [2023-08-04 09:52:38,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:38,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:38,605 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 09:52:38,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824363887] [2023-08-04 09:52:38,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824363887] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:38,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250339363] [2023-08-04 09:52:38,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:38,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:38,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:38,609 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 09:52:38,633 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 09:52:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:38,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 09:52:38,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:38,679 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 09:52:38,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 09:52:38,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250339363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:52:38,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 09:52:38,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 09:52:38,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877879646] [2023-08-04 09:52:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:52:38,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:52:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:38,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:52:38,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:38,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 249 [2023-08-04 09:52:38,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 42 transitions, 134 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 09:52:38,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:38,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 249 [2023-08-04 09:52:38,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:39,311 INFO L124 PetriNetUnfolderBase]: 6641/9167 cut-off events. [2023-08-04 09:52:39,311 INFO L125 PetriNetUnfolderBase]: For 773/773 co-relation queries the response was YES. [2023-08-04 09:52:39,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18623 conditions, 9167 events. 6641/9167 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 40578 event pairs, 3020 based on Foata normal form. 0/6396 useless extension candidates. Maximal degree in co-relation 18587. Up to 8589 conditions per place. [2023-08-04 09:52:39,366 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 47 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-04 09:52:39,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 53 transitions, 254 flow [2023-08-04 09:52:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:52:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:52:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-04 09:52:39,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153949129852744 [2023-08-04 09:52:39,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-04 09:52:39,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-04 09:52:39,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:39,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-04 09:52:39,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 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 09:52:39,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:52:39,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:52:39,373 INFO L175 Difference]: Start difference. First operand has 43 places, 42 transitions, 134 flow. Second operand 3 states and 385 transitions. [2023-08-04 09:52:39,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 53 transitions, 254 flow [2023-08-04 09:52:39,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 53 transitions, 246 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 09:52:39,379 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 138 flow [2023-08-04 09:52:39,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-08-04 09:52:39,380 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 0 predicate places. [2023-08-04 09:52:39,380 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 138 flow [2023-08-04 09:52:39,380 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 09:52:39,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:39,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:39,393 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 09:52:39,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:39,585 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:39,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:39,586 INFO L85 PathProgramCache]: Analyzing trace with hash 377632169, now seen corresponding path program 1 times [2023-08-04 09:52:39,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540581856] [2023-08-04 09:52:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:39,628 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 09:52:39,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540581856] [2023-08-04 09:52:39,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540581856] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:39,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903890388] [2023-08-04 09:52:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:39,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:39,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:39,633 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 09:52:39,636 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 09:52:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:39,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 09:52:39,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:39,698 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 09:52:39,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 09:52:39,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903890388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:52:39,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 09:52:39,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 09:52:39,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606901320] [2023-08-04 09:52:39,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:52:39,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:52:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:52:39,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:39,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 249 [2023-08-04 09:52:39,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 09:52:39,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:39,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 249 [2023-08-04 09:52:39,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:40,247 INFO L124 PetriNetUnfolderBase]: 5690/7982 cut-off events. [2023-08-04 09:52:40,247 INFO L125 PetriNetUnfolderBase]: For 654/654 co-relation queries the response was YES. [2023-08-04 09:52:40,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16560 conditions, 7982 events. 5690/7982 cut-off events. For 654/654 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 35279 event pairs, 2614 based on Foata normal form. 0/5794 useless extension candidates. Maximal degree in co-relation 5708. Up to 5757 conditions per place. [2023-08-04 09:52:40,293 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 55 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-04 09:52:40,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 298 flow [2023-08-04 09:52:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:52:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:52:40,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-04 09:52:40,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247657295850067 [2023-08-04 09:52:40,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-04 09:52:40,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-04 09:52:40,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:40,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-04 09:52:40,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 09:52:40,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:52:40,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:52:40,298 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 138 flow. Second operand 3 states and 392 transitions. [2023-08-04 09:52:40,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 298 flow [2023-08-04 09:52:40,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 296 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 09:52:40,302 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 148 flow [2023-08-04 09:52:40,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-08-04 09:52:40,304 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-08-04 09:52:40,304 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 148 flow [2023-08-04 09:52:40,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 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 09:52:40,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:40,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:40,310 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 09:52:40,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:40,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:40,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:40,510 INFO L85 PathProgramCache]: Analyzing trace with hash 621078129, now seen corresponding path program 1 times [2023-08-04 09:52:40,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:40,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542316535] [2023-08-04 09:52:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:40,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:40,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:40,573 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 09:52:40,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:40,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542316535] [2023-08-04 09:52:40,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542316535] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:40,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153852966] [2023-08-04 09:52:40,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:40,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:40,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:40,575 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 09:52:40,594 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 09:52:40,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:40,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 09:52:40,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 09:52:40,645 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 09:52:40,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153852966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 09:52:40,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 09:52:40,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 09:52:40,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246693719] [2023-08-04 09:52:40,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 09:52:40,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 09:52:40,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:40,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 09:52:40,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:40,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 249 [2023-08-04 09:52:40,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 09:52:40,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:40,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 249 [2023-08-04 09:52:40,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:41,166 INFO L124 PetriNetUnfolderBase]: 5591/7935 cut-off events. [2023-08-04 09:52:41,166 INFO L125 PetriNetUnfolderBase]: For 1526/1526 co-relation queries the response was YES. [2023-08-04 09:52:41,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17162 conditions, 7935 events. 5591/7935 cut-off events. For 1526/1526 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 34925 event pairs, 2913 based on Foata normal form. 0/6054 useless extension candidates. Maximal degree in co-relation 6211. Up to 6075 conditions per place. [2023-08-04 09:52:41,195 INFO L140 encePairwiseOnDemand]: 246/249 looper letters, 56 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-04 09:52:41,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 310 flow [2023-08-04 09:52:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 09:52:41,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 09:52:41,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-08-04 09:52:41,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5247657295850067 [2023-08-04 09:52:41,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-08-04 09:52:41,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-08-04 09:52:41,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:41,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-08-04 09:52:41,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 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 09:52:41,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:52:41,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 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 09:52:41,200 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 148 flow. Second operand 3 states and 392 transitions. [2023-08-04 09:52:41,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 310 flow [2023-08-04 09:52:41,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 308 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 09:52:41,209 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 158 flow [2023-08-04 09:52:41,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-08-04 09:52:41,210 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 4 predicate places. [2023-08-04 09:52:41,210 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 158 flow [2023-08-04 09:52:41,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 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 09:52:41,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:41,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:41,219 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 09:52:41,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:41,416 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:41,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:41,417 INFO L85 PathProgramCache]: Analyzing trace with hash -537245269, now seen corresponding path program 1 times [2023-08-04 09:52:41,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:41,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980157613] [2023-08-04 09:52:41,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:41,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:41,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 09:52:41,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:41,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980157613] [2023-08-04 09:52:41,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980157613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:41,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401519574] [2023-08-04 09:52:41,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:41,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:41,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:41,467 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 09:52:41,469 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 09:52:41,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:41,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 09:52:41,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 09:52:41,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 09:52:41,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 09:52:41,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401519574] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 09:52:41,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 09:52:41,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 09:52:41,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359052899] [2023-08-04 09:52:41,571 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 09:52:41,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 09:52:41,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:41,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 09:52:41,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:41,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-08-04 09:52:41,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 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 09:52:41,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:41,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-08-04 09:52:41,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:42,014 INFO L124 PetriNetUnfolderBase]: 5039/7140 cut-off events. [2023-08-04 09:52:42,014 INFO L125 PetriNetUnfolderBase]: For 1189/1189 co-relation queries the response was YES. [2023-08-04 09:52:42,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15641 conditions, 7140 events. 5039/7140 cut-off events. For 1189/1189 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 30799 event pairs, 1564 based on Foata normal form. 3/5513 useless extension candidates. Maximal degree in co-relation 10534. Up to 6753 conditions per place. [2023-08-04 09:52:42,049 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 48 selfloop transitions, 3 changer transitions 1/56 dead transitions. [2023-08-04 09:52:42,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 284 flow [2023-08-04 09:52:42,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 09:52:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 09:52:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 494 transitions. [2023-08-04 09:52:42,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959839357429719 [2023-08-04 09:52:42,052 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 494 transitions. [2023-08-04 09:52:42,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 494 transitions. [2023-08-04 09:52:42,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:42,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 494 transitions. [2023-08-04 09:52:42,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.5) internal successors, (494), 4 states have internal predecessors, (494), 0 states have call successors, (0), 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 09:52:42,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 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 09:52:42,055 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 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 09:52:42,055 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 158 flow. Second operand 4 states and 494 transitions. [2023-08-04 09:52:42,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 284 flow [2023-08-04 09:52:42,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 56 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 09:52:42,068 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 170 flow [2023-08-04 09:52:42,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-04 09:52:42,069 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-08-04 09:52:42,069 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 170 flow [2023-08-04 09:52:42,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 0 states have call successors, (0), 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 09:52:42,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:42,070 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:42,077 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 09:52:42,275 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,SelfDestructingSolverStorable10 [2023-08-04 09:52:42,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:42,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash -224627608, now seen corresponding path program 1 times [2023-08-04 09:52:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:42,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008238132] [2023-08-04 09:52:42,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:42,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:42,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 09:52:42,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:42,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008238132] [2023-08-04 09:52:42,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008238132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:42,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248823989] [2023-08-04 09:52:42,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:42,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:42,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:42,330 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 09:52:42,347 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 09:52:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:42,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 09:52:42,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 09:52:42,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 09:52:42,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 09:52:42,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248823989] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 09:52:42,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 09:52:42,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 09:52:42,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97659518] [2023-08-04 09:52:42,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 09:52:42,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 09:52:42,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:42,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 09:52:42,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:42,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-08-04 09:52:42,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 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 09:52:42,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:42,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-08-04 09:52:42,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:42,838 INFO L124 PetriNetUnfolderBase]: 4778/6762 cut-off events. [2023-08-04 09:52:42,839 INFO L125 PetriNetUnfolderBase]: For 729/729 co-relation queries the response was YES. [2023-08-04 09:52:42,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14774 conditions, 6762 events. 4778/6762 cut-off events. For 729/729 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 28058 event pairs, 1398 based on Foata normal form. 27/5237 useless extension candidates. Maximal degree in co-relation 9733. Up to 5352 conditions per place. [2023-08-04 09:52:42,875 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 60 selfloop transitions, 3 changer transitions 1/68 dead transitions. [2023-08-04 09:52:42,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 344 flow [2023-08-04 09:52:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 09:52:42,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 09:52:42,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 506 transitions. [2023-08-04 09:52:42,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080321285140562 [2023-08-04 09:52:42,877 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 506 transitions. [2023-08-04 09:52:42,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 506 transitions. [2023-08-04 09:52:42,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:42,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 506 transitions. [2023-08-04 09:52:42,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 126.5) internal successors, (506), 4 states have internal predecessors, (506), 0 states have call successors, (0), 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 09:52:42,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 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 09:52:42,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 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 09:52:42,881 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 170 flow. Second operand 4 states and 506 transitions. [2023-08-04 09:52:42,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 344 flow [2023-08-04 09:52:42,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 68 transitions, 335 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 09:52:42,894 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 175 flow [2023-08-04 09:52:42,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-04 09:52:42,895 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2023-08-04 09:52:42,895 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 175 flow [2023-08-04 09:52:42,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 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 09:52:42,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:42,896 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:42,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 09:52:43,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:43,102 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:43,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:43,102 INFO L85 PathProgramCache]: Analyzing trace with hash 665114359, now seen corresponding path program 1 times [2023-08-04 09:52:43,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:43,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444716142] [2023-08-04 09:52:43,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:43,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 09:52:43,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444716142] [2023-08-04 09:52:43,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444716142] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:43,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295722595] [2023-08-04 09:52:43,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:43,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:43,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:43,150 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 09:52:43,159 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 09:52:43,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:43,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 09:52:43,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 09:52:43,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 09:52:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 09:52:43,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295722595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 09:52:43,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 09:52:43,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 09:52:43,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289074704] [2023-08-04 09:52:43,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 09:52:43,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 09:52:43,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:43,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 09:52:43,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:43,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-08-04 09:52:43,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 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 09:52:43,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:43,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-08-04 09:52:43,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:43,638 INFO L124 PetriNetUnfolderBase]: 3272/4665 cut-off events. [2023-08-04 09:52:43,638 INFO L125 PetriNetUnfolderBase]: For 1501/1501 co-relation queries the response was YES. [2023-08-04 09:52:43,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10396 conditions, 4665 events. 3272/4665 cut-off events. For 1501/1501 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 18012 event pairs, 855 based on Foata normal form. 108/3693 useless extension candidates. Maximal degree in co-relation 9164. Up to 1876 conditions per place. [2023-08-04 09:52:43,654 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 67 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2023-08-04 09:52:43,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 386 flow [2023-08-04 09:52:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 09:52:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 09:52:43,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 513 transitions. [2023-08-04 09:52:43,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150602409638554 [2023-08-04 09:52:43,656 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 513 transitions. [2023-08-04 09:52:43,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 513 transitions. [2023-08-04 09:52:43,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:43,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 513 transitions. [2023-08-04 09:52:43,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 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 09:52:43,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 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 09:52:43,660 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 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 09:52:43,660 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 175 flow. Second operand 4 states and 513 transitions. [2023-08-04 09:52:43,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 386 flow [2023-08-04 09:52:43,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 75 transitions, 376 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 09:52:43,668 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 186 flow [2023-08-04 09:52:43,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-04 09:52:43,669 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 12 predicate places. [2023-08-04 09:52:43,669 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 186 flow [2023-08-04 09:52:43,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 116.4) internal successors, (582), 5 states have internal predecessors, (582), 0 states have call successors, (0), 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 09:52:43,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:43,670 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, 1, 1, 1] [2023-08-04 09:52:43,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 09:52:43,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-04 09:52:43,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:43,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 554346514, now seen corresponding path program 1 times [2023-08-04 09:52:43,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:43,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41706702] [2023-08-04 09:52:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:43,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 09:52:43,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 09:52:43,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41706702] [2023-08-04 09:52:43,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41706702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 09:52:43,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141845538] [2023-08-04 09:52:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:43,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 09:52:43,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 09:52:43,931 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 09:52:43,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 09:52:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 09:52:44,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 09:52:44,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 09:52:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 09:52:44,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 09:52:44,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 09:52:44,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141845538] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 09:52:44,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 09:52:44,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 09:52:44,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340866522] [2023-08-04 09:52:44,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 09:52:44,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 09:52:44,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 09:52:44,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 09:52:44,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 09:52:44,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 249 [2023-08-04 09:52:44,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 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 09:52:44,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 09:52:44,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 249 [2023-08-04 09:52:44,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 09:52:44,336 INFO L124 PetriNetUnfolderBase]: 3260/4642 cut-off events. [2023-08-04 09:52:44,336 INFO L125 PetriNetUnfolderBase]: For 2274/2274 co-relation queries the response was YES. [2023-08-04 09:52:44,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10886 conditions, 4642 events. 3260/4642 cut-off events. For 2274/2274 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 17851 event pairs, 1969 based on Foata normal form. 13/3579 useless extension candidates. Maximal degree in co-relation 9656. Up to 3933 conditions per place. [2023-08-04 09:52:44,361 INFO L140 encePairwiseOnDemand]: 245/249 looper letters, 67 selfloop transitions, 3 changer transitions 2/76 dead transitions. [2023-08-04 09:52:44,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 398 flow [2023-08-04 09:52:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 09:52:44,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 09:52:44,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 513 transitions. [2023-08-04 09:52:44,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5150602409638554 [2023-08-04 09:52:44,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 513 transitions. [2023-08-04 09:52:44,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 513 transitions. [2023-08-04 09:52:44,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 09:52:44,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 513 transitions. [2023-08-04 09:52:44,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 128.25) internal successors, (513), 4 states have internal predecessors, (513), 0 states have call successors, (0), 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 09:52:44,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 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 09:52:44,367 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 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 09:52:44,367 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 186 flow. Second operand 4 states and 513 transitions. [2023-08-04 09:52:44,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 398 flow [2023-08-04 09:52:44,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 394 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 09:52:44,378 INFO L231 Difference]: Finished difference. Result has 57 places, 45 transitions, 190 flow [2023-08-04 09:52:44,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=57, PETRI_TRANSITIONS=45} [2023-08-04 09:52:44,379 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 16 predicate places. [2023-08-04 09:52:44,379 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 45 transitions, 190 flow [2023-08-04 09:52:44,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 states have internal predecessors, (585), 0 states have call successors, (0), 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 09:52:44,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 09:52:44,379 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1] [2023-08-04 09:52:44,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 09:52:44,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 09:52:44,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 09:52:44,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 09:52:44,585 INFO L85 PathProgramCache]: Analyzing trace with hash -186427622, now seen corresponding path program 1 times [2023-08-04 09:52:44,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 09:52:44,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569403209] [2023-08-04 09:52:44,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 09:52:44,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 09:52:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 09:52:44,658 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 09:52:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 09:52:44,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 09:52:44,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 09:52:44,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 09:52:44,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 09:52:44,730 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 09:52:44,731 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2023-08-04 09:52:44,733 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 09:52:44,733 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 09:52:44,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 09:52:44 BasicIcfg [2023-08-04 09:52:44,811 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 09:52:44,812 INFO L158 Benchmark]: Toolchain (without parser) took 16693.36ms. Allocated memory was 467.7MB in the beginning and 654.3MB in the end (delta: 186.6MB). Free memory was 421.9MB in the beginning and 314.1MB in the end (delta: 107.8MB). Peak memory consumption was 296.4MB. Max. memory is 16.0GB. [2023-08-04 09:52:44,812 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 321.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 09:52:44,812 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.70ms. Allocated memory is still 467.7MB. Free memory was 421.9MB in the beginning and 410.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-04 09:52:44,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.89ms. Allocated memory is still 467.7MB. Free memory was 410.5MB in the beginning and 409.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 09:52:44,812 INFO L158 Benchmark]: Boogie Preprocessor took 26.91ms. Allocated memory is still 467.7MB. Free memory was 409.3MB in the beginning and 407.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 09:52:44,813 INFO L158 Benchmark]: RCFGBuilder took 417.70ms. Allocated memory is still 467.7MB. Free memory was 407.2MB in the beginning and 392.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 09:52:44,813 INFO L158 Benchmark]: TraceAbstraction took 16006.62ms. Allocated memory was 467.7MB in the beginning and 654.3MB in the end (delta: 186.6MB). Free memory was 392.5MB in the beginning and 314.1MB in the end (delta: 78.4MB). Peak memory consumption was 267.0MB. Max. memory is 16.0GB. [2023-08-04 09:52:44,814 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 364.9MB. Free memory is still 321.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 204.70ms. Allocated memory is still 467.7MB. Free memory was 421.9MB in the beginning and 410.5MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.89ms. Allocated memory is still 467.7MB. Free memory was 410.5MB in the beginning and 409.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.91ms. Allocated memory is still 467.7MB. Free memory was 409.3MB in the beginning and 407.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 417.70ms. Allocated memory is still 467.7MB. Free memory was 407.2MB in the beginning and 392.5MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 16006.62ms. Allocated memory was 467.7MB in the beginning and 654.3MB in the end (delta: 186.6MB). Free memory was 392.5MB in the beginning and 314.1MB in the end (delta: 78.4MB). Peak memory consumption was 267.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 102 PlacesBefore, 29 PlacesAfterwards, 111 TransitionsBefore, 30 TransitionsAfterwards, 2662 CoEnabledTransitionPairs, 5 FixpointIterations, 22 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 13 ConcurrentYvCompositions, 8 ChoiceCompositions, 93 TotalNumberOfCompositions, 2946 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2614, independent: 2592, independent conditional: 0, independent unconditional: 2592, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1378, independent: 1369, independent conditional: 0, independent unconditional: 1369, dependent: 9, dependent conditional: 0, dependent unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2614, independent: 1223, independent conditional: 0, independent unconditional: 1223, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 1378, unknown conditional: 0, unknown unconditional: 1378] , Statistics on independence cache: Total cache size (in pairs): 44, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 102 PlacesBefore, 29 PlacesAfterwards, 111 TransitionsBefore, 30 TransitionsAfterwards, 2662 CoEnabledTransitionPairs, 6 FixpointIterations, 22 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 13 ConcurrentYvCompositions, 8 ChoiceCompositions, 93 TotalNumberOfCompositions, 3094 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2786, independent: 2760, independent conditional: 0, independent unconditional: 2760, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1383, independent: 1378, independent conditional: 0, independent unconditional: 1378, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2786, independent: 1382, independent conditional: 0, independent unconditional: 1382, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 1383, unknown conditional: 0, unknown unconditional: 1383] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 126 PlacesBefore, 41 PlacesAfterwards, 139 TransitionsBefore, 44 TransitionsAfterwards, 6732 CoEnabledTransitionPairs, 6 FixpointIterations, 23 TrivialSequentialCompositions, 58 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 17 ConcurrentYvCompositions, 10 ChoiceCompositions, 110 TotalNumberOfCompositions, 8940 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8375, independent: 8327, independent conditional: 0, independent unconditional: 8327, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3472, independent: 3460, independent conditional: 0, independent unconditional: 3460, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8375, independent: 4867, independent conditional: 0, independent unconditional: 4867, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 3472, unknown conditional: 0, unknown unconditional: 3472] , Statistics on independence cache: Total cache size (in pairs): 185, Positive cache size: 182, Positive conditional cache size: 0, Positive unconditional cache size: 182, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 79]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L38] 0 int X, Y; [L67] 0 pthread_t t1[2], t2[2]; [L69] 0 X = __VERIFIER_nondet_int() [L70] CALL 0 assume_abort_if_not(X <= 10000) [L35] COND FALSE 0 !(!cond) [L70] RET 0 assume_abort_if_not(X <= 10000) [L73] 0 int asdf=0; VAL [X=10000, Y=0, asdf=0, t1={3:0}, t2={5:0}] [L73] COND TRUE 0 asdf<2 [L73] FCALL, FORK 0 pthread_create(&t1[asdf], 0, thread1, 0) VAL [X=10000, Y=0, asdf=0, pthread_create(&t1[asdf], 0, thread1, 0)=-4, t1={3:0}, t2={5:0}] [L73] 0 asdf++ VAL [X=10000, Y=0, asdf=1, t1={3:0}, t2={5:0}] [L73] COND TRUE 0 asdf<2 [L41] 1 int x; [L42] 1 x = X VAL [X=10000, Y=0, x=10000] [L43] COND FALSE 1 !(x < 10000) [L47] 1 Y = Y + x [L50] 1 return 0; [L73] FCALL, FORK 0 pthread_create(&t1[asdf], 0, thread1, 0) VAL [X=10000, Y=10000, \result={0:0}, asdf=1, pthread_create(&t1[asdf], 0, thread1, 0)=-3, t1={3:0}, t2={5:0}, x=10000] [L73] 0 asdf++ VAL [X=10000, Y=10000, \result={0:0}, asdf=2, t1={3:0}, t2={5:0}, x=10000] [L41] 2 int x; [L42] 2 x = X VAL [X=10000, Y=10000, \result={0:0}, x=10000] [L43] COND FALSE 2 !(x < 10000) [L47] 2 Y = Y + x [L50] 2 return 0; [L73] COND FALSE 0 !(asdf<2) [L74] 0 int asdf=0; VAL [X=10000, Y=20000, \result={0:0}, asdf=0, asdf=2, t1={3:0}, t2={5:0}, x=10000] [L74] COND TRUE 0 asdf<2 [L74] FCALL, FORK 0 pthread_create(&t2[asdf], 0, thread2, 0) VAL [X=10000, Y=20000, \result={0:0}, asdf=0, asdf=2, pthread_create(&t2[asdf], 0, thread2, 0)=-2, t1={3:0}, t2={5:0}, x=10000] [L74] 0 asdf++ VAL [X=10000, Y=20000, \result={0:0}, asdf=1, asdf=2, t1={3:0}, t2={5:0}, x=10000] [L74] COND TRUE 0 asdf<2 [L54] 3 int x; [L55] 3 x = X VAL [X=10000, Y=20000, \result={0:0}, x=10000, x=10000] [L56] COND FALSE 3 !(x < 10000) [L60] 3 Y = Y + x [L63] 3 return 0; [L74] FCALL, FORK 0 pthread_create(&t2[asdf], 0, thread2, 0) VAL [X=10000, Y=30000, \result={0:0}, \result={0:0}, asdf=1, asdf=2, pthread_create(&t2[asdf], 0, thread2, 0)=-1, t1={3:0}, t2={5:0}, x=10000, x=10000] [L74] 0 asdf++ VAL [X=10000, Y=30000, \result={0:0}, \result={0:0}, asdf=2, asdf=2, t1={3:0}, t2={5:0}, x=10000, x=10000] [L54] 4 int x; [L55] 4 x = X VAL [X=10000, Y=30000, \result={0:0}, \result={0:0}, x=10000, x=10000] [L56] COND FALSE 4 !(x < 10000) [L60] 4 Y = Y + x [L63] 4 return 0; [L74] COND FALSE 0 !(asdf<2) [L75] 0 int asdf=0; VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, t1={3:0}, t2={5:0}, x=10000, x=10000] [L75] COND TRUE 0 asdf<2 [L75] 0 t1[asdf] VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, t1={3:0}, t1[asdf]=-4, t2={5:0}, x=10000, x=10000] [L75] FCALL, JOIN 1 pthread_join(t1[asdf], 0) VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, t1={3:0}, t1[asdf]=-4, t2={5:0}, x=10000, x=10000] [L75] 0 asdf++ VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, t1={3:0}, t2={5:0}, x=10000, x=10000] [L75] COND TRUE 0 asdf<2 [L75] 0 t1[asdf] VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, t1={3:0}, t1[asdf]=-3, t2={5:0}, x=10000, x=10000] [L75] FCALL, JOIN 2 pthread_join(t1[asdf], 0) VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, t1={3:0}, t1[asdf]=-3, t2={5:0}, x=10000, x=10000] [L75] 0 asdf++ VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, x=10000, x=10000] [L75] COND FALSE 0 !(asdf<2) [L76] 0 int asdf=0; VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, x=10000, x=10000] [L76] COND TRUE 0 asdf<2 [L76] 0 t2[asdf] VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, t2[asdf]=-2, x=10000, x=10000] [L76] FCALL, JOIN 3 pthread_join(t2[asdf], 0) VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=0, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, t2[asdf]=-2, x=10000, x=10000] [L76] 0 asdf++ VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, x=10000, x=10000] [L76] COND TRUE 0 asdf<2 [L76] 0 t2[asdf] VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, t2[asdf]=-1, x=10000, x=10000] [L76] FCALL, JOIN 4 pthread_join(t2[asdf], 0) VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=1, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, t2[asdf]=-1, x=10000, x=10000] [L76] 0 asdf++ VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=2, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, x=10000, x=10000] [L76] COND FALSE 0 !(asdf<2) [L78] CALL 0 assume_abort_if_not(Y != 20000) [L35] COND FALSE 0 !(!cond) [L78] RET 0 assume_abort_if_not(Y != 20000) [L79] 0 reach_error() VAL [X=10000, Y=40000, \result={0:0}, \result={0:0}, asdf=2, asdf=2, asdf=2, asdf=2, t1={3:0}, t2={5:0}, x=10000, x=10000] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 118 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.7s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 273 IncrementalHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 17 mSDtfsCounter, 273 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=4, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 123 NumberOfCodeBlocks, 123 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 208 SizeOfPredicates, 0 NumberOfNonLiveVariables, 414 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 18/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 138 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 270 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 206 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 988 IncrementalHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 12 mSDtfsCounter, 988 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 307 GetRequests, 277 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=8, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 384 NumberOfCodeBlocks, 384 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 446 ConstructedInterpolants, 0 QuantifiedInterpolants, 620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 898 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 132/147 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 118 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 09:52:44,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...