/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix031.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:24:43,546 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:24:43,611 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:24:43,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:24:43,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:24:43,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:24:43,616 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:24:43,638 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:24:43,639 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:24:43,642 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:24:43,643 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:24:43,643 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:24:43,643 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:24:43,644 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:24:43,645 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:24:43,645 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:24:43,645 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:24:43,645 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:24:43,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:24:43,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:24:43,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:24:43,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:24:43,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:24:43,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:24:43,647 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:24:43,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:24:43,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:24:43,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:24:43,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:24:43,648 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:24:43,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:24:43,649 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:24:43,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:24:43,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:24:43,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:24:43,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:24:43,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:24:43,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:24:43,650 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:24:43,650 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:24:43,651 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:24:43,651 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:24:43,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:24:43,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:24:43,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:24:43,817 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:24:43,817 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:24:43,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix031.oepc_bound2.i [2023-08-03 17:24:44,695 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:24:44,869 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:24:44,869 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix031.oepc_bound2.i [2023-08-03 17:24:44,890 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f649e31f9/6b46648827b64743945cf3899f6bbe64/FLAG1b929e909 [2023-08-03 17:24:44,898 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f649e31f9/6b46648827b64743945cf3899f6bbe64 [2023-08-03 17:24:44,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:24:44,901 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:24:44,902 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:24:44,902 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:24:44,904 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:24:44,904 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:24:44" (1/1) ... [2023-08-03 17:24:44,905 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707647ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:44, skipping insertion in model container [2023-08-03 17:24:44,905 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:24:44" (1/1) ... [2023-08-03 17:24:44,937 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:24:45,029 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix031.oepc_bound2.i[945,958] [2023-08-03 17:24:45,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:24:45,133 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:24:45,146 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix031.oepc_bound2.i[945,958] [2023-08-03 17:24:45,153 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:24:45,154 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:24:45,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:24:45,188 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:24:45,189 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:24:45,193 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:24:45,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45 WrapperNode [2023-08-03 17:24:45,193 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:24:45,194 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:24:45,194 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:24:45,194 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:24:45,198 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,207 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,222 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 139 [2023-08-03 17:24:45,222 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:24:45,223 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:24:45,223 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:24:45,223 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:24:45,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,231 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,231 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,239 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,242 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:24:45,243 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:24:45,243 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:24:45,243 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:24:45,244 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (1/1) ... [2023-08-03 17:24:45,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:24:45,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:24:45,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 17:24:45,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 17:24:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:24:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:24:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:24:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:24:45,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:24:45,316 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:24:45,316 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:24:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:24:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:24:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:24:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:24:45,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:24:45,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:24:45,318 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:24:45,401 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:24:45,405 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:24:45,582 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:24:45,678 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:24:45,678 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-03 17:24:45,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:24:45 BoogieIcfgContainer [2023-08-03 17:24:45,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:24:45,681 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:24:45,681 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:24:45,683 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:24:45,683 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:24:44" (1/3) ... [2023-08-03 17:24:45,684 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c70514f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:24:45, skipping insertion in model container [2023-08-03 17:24:45,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:24:45" (2/3) ... [2023-08-03 17:24:45,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c70514f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:24:45, skipping insertion in model container [2023-08-03 17:24:45,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:24:45" (3/3) ... [2023-08-03 17:24:45,688 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix031.oepc_bound2.i [2023-08-03 17:24:45,693 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:24:45,699 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:24:45,699 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:24:45,700 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:24:45,745 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:24:45,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 110 transitions, 230 flow [2023-08-03 17:24:45,820 INFO L124 PetriNetUnfolderBase]: 14/227 cut-off events. [2023-08-03 17:24:45,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:24:45,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 227 events. 14/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 632 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 136. Up to 8 conditions per place. [2023-08-03 17:24:45,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 111 places, 110 transitions, 230 flow [2023-08-03 17:24:45,836 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 110 transitions, 230 flow [2023-08-03 17:24:45,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:24:45,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 110 transitions, 230 flow [2023-08-03 17:24:45,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 110 transitions, 230 flow [2023-08-03 17:24:45,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 110 transitions, 230 flow [2023-08-03 17:24:45,892 INFO L124 PetriNetUnfolderBase]: 14/227 cut-off events. [2023-08-03 17:24:45,892 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:24:45,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 227 events. 14/227 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 632 event pairs, 0 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 136. Up to 8 conditions per place. [2023-08-03 17:24:45,895 INFO L119 LiptonReduction]: Number of co-enabled transitions 1886 [2023-08-03 17:24:48,476 INFO L134 LiptonReduction]: Checked pairs total: 4724 [2023-08-03 17:24:48,476 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-03 17:24:48,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:24:48,489 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;@3a5a17c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:24:48,489 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 17:24:48,491 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:24:48,491 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-08-03 17:24:48,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:24:48,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:24:48,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:24:48,492 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:24:48,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:24:48,495 INFO L85 PathProgramCache]: Analyzing trace with hash 15056050, now seen corresponding path program 1 times [2023-08-03 17:24:48,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:24:48,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954375760] [2023-08-03 17:24:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:24:48,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:24:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:24:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:24:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:24:48,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954375760] [2023-08-03 17:24:48,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954375760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:24:48,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:24:48,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:24:48,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328258696] [2023-08-03 17:24:48,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:24:48,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:24:48,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:24:48,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:24:48,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:24:48,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 207 [2023-08-03 17:24:48,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 66 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) [2023-08-03 17:24:48,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:24:48,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 207 [2023-08-03 17:24:48,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:24:48,925 INFO L124 PetriNetUnfolderBase]: 392/849 cut-off events. [2023-08-03 17:24:48,926 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 17:24:48,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1584 conditions, 849 events. 392/849 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4625 event pairs, 80 based on Foata normal form. 35/774 useless extension candidates. Maximal degree in co-relation 1362. Up to 508 conditions per place. [2023-08-03 17:24:48,933 INFO L140 encePairwiseOnDemand]: 203/207 looper letters, 33 selfloop transitions, 2 changer transitions 4/43 dead transitions. [2023-08-03 17:24:48,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 43 transitions, 177 flow [2023-08-03 17:24:48,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:24:48,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:24:48,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-08-03 17:24:48,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5314009661835749 [2023-08-03 17:24:48,948 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-08-03 17:24:48,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-08-03 17:24:48,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:24:48,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-08-03 17:24:48,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:48,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:48,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:48,959 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 66 flow. Second operand 3 states and 330 transitions. [2023-08-03 17:24:48,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 43 transitions, 177 flow [2023-08-03 17:24:48,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 43 transitions, 177 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:24:48,963 INFO L231 Difference]: Finished difference. Result has 33 places, 24 transitions, 62 flow [2023-08-03 17:24:48,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=24} [2023-08-03 17:24:48,967 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 1 predicate places. [2023-08-03 17:24:48,967 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 24 transitions, 62 flow [2023-08-03 17:24:48,967 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) [2023-08-03 17:24:48,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:24:48,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:24:48,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:24:48,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:24:48,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:24:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1588464244, now seen corresponding path program 1 times [2023-08-03 17:24:48,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:24:48,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565008007] [2023-08-03 17:24:48,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:24:48,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:24:48,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:24:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:24:49,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:24:49,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565008007] [2023-08-03 17:24:49,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565008007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:24:49,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:24:49,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:24:49,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891460961] [2023-08-03 17:24:49,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:24:49,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:24:49,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:24:49,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:24:49,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:24:49,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 207 [2023-08-03 17:24:49,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:49,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:24:49,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 207 [2023-08-03 17:24:49,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:24:49,113 INFO L124 PetriNetUnfolderBase]: 270/486 cut-off events. [2023-08-03 17:24:49,114 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-08-03 17:24:49,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1037 conditions, 486 events. 270/486 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2092 event pairs, 120 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 1015. Up to 471 conditions per place. [2023-08-03 17:24:49,117 INFO L140 encePairwiseOnDemand]: 204/207 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-03 17:24:49,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 120 flow [2023-08-03 17:24:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:24:49,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:24:49,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-08-03 17:24:49,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895330112721417 [2023-08-03 17:24:49,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-08-03 17:24:49,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-08-03 17:24:49,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:24:49,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-08-03 17:24:49,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:49,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:49,123 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 207.0) internal successors, (828), 4 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:49,123 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 62 flow. Second operand 3 states and 304 transitions. [2023-08-03 17:24:49,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 120 flow [2023-08-03 17:24:49,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 17:24:49,127 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 66 flow [2023-08-03 17:24:49,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=207, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-03 17:24:49,131 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-08-03 17:24:49,131 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 66 flow [2023-08-03 17:24:49,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:49,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:24:49,131 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:24:49,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:24:49,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 17:24:49,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:24:49,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1584017299, now seen corresponding path program 1 times [2023-08-03 17:24:49,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:24:49,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494076603] [2023-08-03 17:24:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:24:49,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:24:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:24:49,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:24:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:24:49,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:24:49,176 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:24:49,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 17:24:49,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 17:24:49,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 17:24:49,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 17:24:49,178 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 17:24:49,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:24:49,178 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:24:49,180 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:24:49,180 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:24:49,194 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:24:49,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 131 transitions, 286 flow [2023-08-03 17:24:49,224 INFO L124 PetriNetUnfolderBase]: 30/467 cut-off events. [2023-08-03 17:24:49,225 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:24:49,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 467 events. 30/467 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1990 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 339. Up to 18 conditions per place. [2023-08-03 17:24:49,225 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 131 transitions, 286 flow [2023-08-03 17:24:49,227 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 131 transitions, 286 flow [2023-08-03 17:24:49,227 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:24:49,227 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 131 transitions, 286 flow [2023-08-03 17:24:49,227 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 131 transitions, 286 flow [2023-08-03 17:24:49,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 131 transitions, 286 flow [2023-08-03 17:24:49,257 INFO L124 PetriNetUnfolderBase]: 30/467 cut-off events. [2023-08-03 17:24:49,257 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-03 17:24:49,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 467 events. 30/467 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1990 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 339. Up to 18 conditions per place. [2023-08-03 17:24:49,262 INFO L119 LiptonReduction]: Number of co-enabled transitions 4572 [2023-08-03 17:24:51,651 INFO L134 LiptonReduction]: Checked pairs total: 16879 [2023-08-03 17:24:51,651 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-03 17:24:51,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:24:51,653 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;@3a5a17c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:24:51,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:24:51,655 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:24:51,655 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2023-08-03 17:24:51,655 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:24:51,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:24:51,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:24:51,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:24:51,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:24:51,656 INFO L85 PathProgramCache]: Analyzing trace with hash 22808651, now seen corresponding path program 1 times [2023-08-03 17:24:51,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:24:51,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041615756] [2023-08-03 17:24:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:24:51,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:24:51,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:24:51,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:24:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:24:51,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041615756] [2023-08-03 17:24:51,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041615756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:24:51,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:24:51,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:24:51,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40187081] [2023-08-03 17:24:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:24:51,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:24:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:24:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:24:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:24:51,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 231 [2023-08-03 17:24:51,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:51,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:24:51,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 231 [2023-08-03 17:24:51,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:24:54,242 INFO L124 PetriNetUnfolderBase]: 20420/32434 cut-off events. [2023-08-03 17:24:54,242 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2023-08-03 17:24:54,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60939 conditions, 32434 events. 20420/32434 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 255591 event pairs, 3947 based on Foata normal form. 837/27696 useless extension candidates. Maximal degree in co-relation 51616. Up to 26049 conditions per place. [2023-08-03 17:24:54,416 INFO L140 encePairwiseOnDemand]: 225/231 looper letters, 53 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-03 17:24:54,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 70 transitions, 289 flow [2023-08-03 17:24:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:24:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:24:54,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-03 17:24:54,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5627705627705628 [2023-08-03 17:24:54,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-03 17:24:54,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-03 17:24:54,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:24:54,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-03 17:24:54,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:54,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:54,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:54,421 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 118 flow. Second operand 3 states and 390 transitions. [2023-08-03 17:24:54,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 70 transitions, 289 flow [2023-08-03 17:24:54,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 285 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 17:24:54,424 INFO L231 Difference]: Finished difference. Result has 58 places, 48 transitions, 133 flow [2023-08-03 17:24:54,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=58, PETRI_TRANSITIONS=48} [2023-08-03 17:24:54,426 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-03 17:24:54,426 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 48 transitions, 133 flow [2023-08-03 17:24:54,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:54,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:24:54,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:24:54,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:24:54,427 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:24:54,427 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:24:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash 453507741, now seen corresponding path program 1 times [2023-08-03 17:24:54,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:24:54,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336382915] [2023-08-03 17:24:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:24:54,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:24:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:24:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:24:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:24:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336382915] [2023-08-03 17:24:54,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336382915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:24:54,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:24:54,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:24:54,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449949635] [2023-08-03 17:24:54,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:24:54,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:24:54,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:24:54,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:24:54,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:24:54,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 231 [2023-08-03 17:24:54,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 48 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:54,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:24:54,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 231 [2023-08-03 17:24:54,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:24:56,814 INFO L124 PetriNetUnfolderBase]: 20048/29307 cut-off events. [2023-08-03 17:24:56,814 INFO L125 PetriNetUnfolderBase]: For 2909/2909 co-relation queries the response was YES. [2023-08-03 17:24:56,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62253 conditions, 29307 events. 20048/29307 cut-off events. For 2909/2909 co-relation queries the response was YES. Maximal size of possible extension queue 1362. Compared 204596 event pairs, 15274 based on Foata normal form. 0/24514 useless extension candidates. Maximal degree in co-relation 40399. Up to 27351 conditions per place. [2023-08-03 17:24:56,929 INFO L140 encePairwiseOnDemand]: 228/231 looper letters, 37 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-03 17:24:56,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 224 flow [2023-08-03 17:24:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:24:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:24:56,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-03 17:24:56,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180375180375181 [2023-08-03 17:24:56,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-03 17:24:56,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-03 17:24:56,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:24:56,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-03 17:24:56,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:56,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:56,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:56,933 INFO L175 Difference]: Start difference. First operand has 58 places, 48 transitions, 133 flow. Second operand 3 states and 359 transitions. [2023-08-03 17:24:56,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 224 flow [2023-08-03 17:24:56,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 220 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:24:56,935 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 142 flow [2023-08-03 17:24:56,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-08-03 17:24:56,936 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2023-08-03 17:24:56,936 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 142 flow [2023-08-03 17:24:56,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:24:56,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:24:56,937 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:24:56,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:24:56,937 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:24:56,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:24:56,937 INFO L85 PathProgramCache]: Analyzing trace with hash -806441231, now seen corresponding path program 1 times [2023-08-03 17:24:56,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:24:56,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999640856] [2023-08-03 17:24:56,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:24:56,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:24:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:24:56,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:24:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:24:56,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:24:56,978 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:24:56,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-03 17:24:56,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:24:56,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:24:56,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:24:56,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:24:56,979 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:24:56,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 17:24:56,979 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:24:56,992 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:24:56,992 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:24:57,033 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:24:57 BasicIcfg [2023-08-03 17:24:57,033 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:24:57,034 INFO L158 Benchmark]: Toolchain (without parser) took 12132.86ms. Allocated memory was 375.4MB in the beginning and 1.7GB in the end (delta: 1.4GB). Free memory was 320.2MB in the beginning and 1.1GB in the end (delta: -731.8MB). Peak memory consumption was 635.5MB. Max. memory is 16.0GB. [2023-08-03 17:24:57,034 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 375.4MB. Free memory is still 330.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:24:57,034 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.89ms. Allocated memory is still 375.4MB. Free memory was 319.9MB in the beginning and 297.2MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 17:24:57,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.46ms. Allocated memory is still 375.4MB. Free memory was 297.2MB in the beginning and 294.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 17:24:57,035 INFO L158 Benchmark]: Boogie Preprocessor took 19.53ms. Allocated memory is still 375.4MB. Free memory was 294.4MB in the beginning and 292.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:24:57,035 INFO L158 Benchmark]: RCFGBuilder took 436.83ms. Allocated memory was 375.4MB in the beginning and 551.6MB in the end (delta: 176.2MB). Free memory was 292.6MB in the beginning and 489.8MB in the end (delta: -197.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.0GB. [2023-08-03 17:24:57,035 INFO L158 Benchmark]: TraceAbstraction took 11352.25ms. Allocated memory was 551.6MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 489.8MB in the beginning and 1.1GB in the end (delta: -562.2MB). Peak memory consumption was 626.5MB. Max. memory is 16.0GB. [2023-08-03 17:24:57,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 375.4MB. Free memory is still 330.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 291.89ms. Allocated memory is still 375.4MB. Free memory was 319.9MB in the beginning and 297.2MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.46ms. Allocated memory is still 375.4MB. Free memory was 297.2MB in the beginning and 294.4MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.53ms. Allocated memory is still 375.4MB. Free memory was 294.4MB in the beginning and 292.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 436.83ms. Allocated memory was 375.4MB in the beginning and 551.6MB in the end (delta: 176.2MB). Free memory was 292.6MB in the beginning and 489.8MB in the end (delta: -197.2MB). Peak memory consumption was 9.0MB. Max. memory is 16.0GB. * TraceAbstraction took 11352.25ms. Allocated memory was 551.6MB in the beginning and 1.7GB in the end (delta: 1.2GB). Free memory was 489.8MB in the beginning and 1.1GB in the end (delta: -562.2MB). Peak memory consumption was 626.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 111 PlacesBefore, 32 PlacesAfterwards, 110 TransitionsBefore, 28 TransitionsAfterwards, 1886 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 97 TotalNumberOfCompositions, 4724 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2335, independent: 2189, independent conditional: 0, independent unconditional: 2189, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1062, independent: 1034, independent conditional: 0, independent unconditional: 1034, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2335, independent: 1155, independent conditional: 0, independent unconditional: 1155, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 1062, unknown conditional: 0, unknown unconditional: 1062] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 136 PlacesBefore, 55 PlacesAfterwards, 131 TransitionsBefore, 47 TransitionsAfterwards, 4572 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 48 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 3 ChoiceCompositions, 100 TotalNumberOfCompositions, 16879 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6019, independent: 5703, independent conditional: 0, independent unconditional: 5703, dependent: 316, dependent conditional: 0, dependent unconditional: 316, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2251, independent: 2204, independent conditional: 0, independent unconditional: 2204, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6019, independent: 3499, independent conditional: 0, independent unconditional: 3499, dependent: 269, dependent conditional: 0, dependent unconditional: 269, unknown: 2251, unknown conditional: 0, unknown unconditional: 2251] , Statistics on independence cache: Total cache size (in pairs): 270, Positive cache size: 244, Positive conditional cache size: 0, Positive unconditional cache size: 244, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L710] 0 int __unbuffered_p0_EAX = 0; [L712] 0 int __unbuffered_p0_EBX = 0; [L714] 0 int __unbuffered_p1_EAX = 0; [L716] 0 int __unbuffered_p1_EBX = 0; [L718] 0 int a = 0; [L719] 0 _Bool a$flush_delayed; [L720] 0 int a$mem_tmp; [L721] 0 _Bool a$r_buff0_thd0; [L722] 0 _Bool a$r_buff0_thd1; [L723] 0 _Bool a$r_buff0_thd2; [L724] 0 _Bool a$r_buff1_thd0; [L725] 0 _Bool a$r_buff1_thd1; [L726] 0 _Bool a$r_buff1_thd2; [L727] 0 _Bool a$read_delayed; [L728] 0 int *a$read_delayed_var; [L729] 0 int a$w_buff0; [L730] 0 _Bool a$w_buff0_used; [L731] 0 int a$w_buff1; [L732] 0 _Bool a$w_buff1_used; [L733] 0 _Bool main$tmp_guard0; [L734] 0 _Bool main$tmp_guard1; [L736] 0 int x = 0; [L738] 0 int y = 0; [L740] 0 int z = 0; [L741] 0 _Bool weak$$choice0; [L742] 0 _Bool weak$$choice2; [L827] 0 pthread_t t833[2]; [L828] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t833={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t833[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=0, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=0, a$w_buff0_used=0, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t833[asdf], ((void *)0), P0, ((void *)0))=-1, t833={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L746] 1 a$w_buff1 = a$w_buff0 [L747] 1 a$w_buff0 = 1 [L748] 1 a$w_buff1_used = a$w_buff0_used [L749] 1 a$w_buff0_used = (_Bool)1 [L750] CALL 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L750] RET 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L751] 1 a$r_buff1_thd0 = a$r_buff0_thd0 [L752] 1 a$r_buff1_thd1 = a$r_buff0_thd1 [L753] 1 a$r_buff1_thd2 = a$r_buff0_thd2 [L754] 1 a$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L828] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t833={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t833[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=0, a$w_buff1_used=0, a=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t833[asdf], ((void *)0), P0, ((void *)0))=0, t833={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L746] 2 a$w_buff1 = a$w_buff0 [L747] 2 a$w_buff0 = 1 [L748] 2 a$w_buff1_used = a$w_buff0_used [L749] 2 a$w_buff0_used = (_Bool)1 [L750] CALL 2 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$read_delayed=0, a$read_delayed_var={0:0}, a$w_buff0=1, a$w_buff0_used=1, a$w_buff1=1, a$w_buff1_used=1, a=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 828]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 128 locations, 5 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: 3.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 88 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 2 mSDtfsCounter, 88 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 149 locations, 6 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: 7.8s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 25 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 133 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 2 mSDtfsCounter, 133 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=142occurred in iteration=2, InterpolantAutomatonStates: 6, 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, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2023-08-03 17:24:57,063 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...