/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_mix015.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:08:57,759 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:08:57,833 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:08:57,838 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:08:57,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:08:57,839 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:08:57,840 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:08:57,869 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:08:57,870 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:08:57,873 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:08:57,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:08:57,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:08:57,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:08:57,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:08:57,876 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:08:57,876 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:08:57,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:08:57,877 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:08:57,877 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:08:57,877 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:08:57,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:08:57,878 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:08:57,878 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:08:57,878 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:08:57,878 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:08:57,879 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:08:57,879 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:08:57,879 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:08:57,880 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:08:57,880 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:08:57,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:08:57,881 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:08:57,881 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:08:57,881 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:08:57,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:08:57,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:08:57,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:08:57,881 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:08:57,882 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:08:57,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:08:57,882 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:08:57,882 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:08:58,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:08:58,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:08:58,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:08:58,108 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:08:58,109 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:08:58,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix015.oepc_bound2.i [2023-08-03 17:08:59,337 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:08:59,563 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:08:59,564 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix015.oepc_bound2.i [2023-08-03 17:08:59,578 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc7218c25/632c48d4c6814d6d8373588f91205f03/FLAGee1103580 [2023-08-03 17:08:59,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc7218c25/632c48d4c6814d6d8373588f91205f03 [2023-08-03 17:08:59,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:08:59,596 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:08:59,596 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:08:59,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:08:59,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:08:59,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:08:59" (1/1) ... [2023-08-03 17:08:59,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a4415f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:08:59, skipping insertion in model container [2023-08-03 17:08:59,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:08:59" (1/1) ... [2023-08-03 17:08:59,645 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:08:59,772 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_mix015.oepc_bound2.i[945,958] [2023-08-03 17:08:59,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:09:00,002 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:09:00,014 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_mix015.oepc_bound2.i[945,958] [2023-08-03 17:09:00,036 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:09:00,038 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:09:00,082 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:09:00,103 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:09:00,104 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:09:00,110 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:09:00,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00 WrapperNode [2023-08-03 17:09:00,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:09:00,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:09:00,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:09:00,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:09:00,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,130 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,153 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 162 [2023-08-03 17:09:00,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:09:00,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:09:00,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:09:00,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:09:00,165 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,169 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,170 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,193 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,196 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,199 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,201 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:09:00,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:09:00,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:09:00,206 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:09:00,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (1/1) ... [2023-08-03 17:09:00,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:09:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:09:00,250 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 17:09:00,268 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 17:09:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:09:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:09:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:09:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:09:00,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:09:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:09:00,298 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:09:00,298 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:09:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:09:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:09:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:09:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:09:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:09:00,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:09:00,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:09:00,301 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 17:09:00,466 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:09:00,468 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:09:00,727 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:09:00,891 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:09:00,891 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:09:00,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:09:00 BoogieIcfgContainer [2023-08-03 17:09:00,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:09:00,896 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:09:00,896 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:09:00,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:09:00,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:08:59" (1/3) ... [2023-08-03 17:09:00,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdc3578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:09:00, skipping insertion in model container [2023-08-03 17:09:00,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:09:00" (2/3) ... [2023-08-03 17:09:00,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdc3578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:09:00, skipping insertion in model container [2023-08-03 17:09:00,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:09:00" (3/3) ... [2023-08-03 17:09:00,903 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix015.oepc_bound2.i [2023-08-03 17:09:00,910 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:09:00,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:09:00,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:09:00,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:09:00,973 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:09:01,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 136 transitions, 287 flow [2023-08-03 17:09:01,170 INFO L124 PetriNetUnfolderBase]: 30/458 cut-off events. [2023-08-03 17:09:01,170 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:09:01,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 458 events. 30/458 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2018 event pairs, 0 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-08-03 17:09:01,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 136 transitions, 287 flow [2023-08-03 17:09:01,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 136 transitions, 287 flow [2023-08-03 17:09:01,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:09:01,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 138 places, 136 transitions, 287 flow [2023-08-03 17:09:01,210 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 138 places, 136 transitions, 287 flow [2023-08-03 17:09:01,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 136 transitions, 287 flow [2023-08-03 17:09:01,275 INFO L124 PetriNetUnfolderBase]: 30/458 cut-off events. [2023-08-03 17:09:01,275 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:09:01,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 458 events. 30/458 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2018 event pairs, 0 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 275. Up to 16 conditions per place. [2023-08-03 17:09:01,285 INFO L119 LiptonReduction]: Number of co-enabled transitions 3172 [2023-08-03 17:09:04,713 INFO L134 LiptonReduction]: Checked pairs total: 8123 [2023-08-03 17:09:04,714 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-03 17:09:04,736 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:09:04,744 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;@3c2543e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:09:04,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:09:04,747 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:09:04,747 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:09:04,747 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:09:04,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:09:04,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:09:04,749 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 17:09:04,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:09:04,754 INFO L85 PathProgramCache]: Analyzing trace with hash 17969329, now seen corresponding path program 1 times [2023-08-03 17:09:04,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:09:04,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280266535] [2023-08-03 17:09:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:09:04,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:09:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:09:05,126 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 17:09:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:09:05,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280266535] [2023-08-03 17:09:05,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280266535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:09:05,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:09:05,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:09:05,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828192798] [2023-08-03 17:09:05,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:09:05,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:09:05,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:09:05,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:09:05,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:09:05,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 251 [2023-08-03 17:09:05,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 17:09:05,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:09:05,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 251 [2023-08-03 17:09:05,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:09:05,869 INFO L124 PetriNetUnfolderBase]: 3074/5132 cut-off events. [2023-08-03 17:09:05,870 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-03 17:09:05,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9987 conditions, 5132 events. 3074/5132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 33054 event pairs, 650 based on Foata normal form. 180/4714 useless extension candidates. Maximal degree in co-relation 8705. Up to 3553 conditions per place. [2023-08-03 17:09:05,901 INFO L140 encePairwiseOnDemand]: 247/251 looper letters, 46 selfloop transitions, 2 changer transitions 4/58 dead transitions. [2023-08-03 17:09:05,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 58 transitions, 241 flow [2023-08-03 17:09:05,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:09:05,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:09:05,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-08-03 17:09:05,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.547144754316069 [2023-08-03 17:09:05,920 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-08-03 17:09:05,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-08-03 17:09:05,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:09:05,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-08-03 17:09:05,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 17:09:05,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 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 17:09:05,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 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 17:09:05,936 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 89 flow. Second operand 3 states and 412 transitions. [2023-08-03 17:09:05,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 58 transitions, 241 flow [2023-08-03 17:09:05,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 241 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:09:05,941 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 85 flow [2023-08-03 17:09:05,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2023-08-03 17:09:05,946 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-03 17:09:05,946 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 85 flow [2023-08-03 17:09:05,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 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 17:09:05,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:09:05,947 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:09:05,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:09:05,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:09:05,948 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:09:05,948 INFO L85 PathProgramCache]: Analyzing trace with hash 88722450, now seen corresponding path program 1 times [2023-08-03 17:09:05,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:09:05,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626470053] [2023-08-03 17:09:05,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:09:05,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:09:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:09:05,967 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:09:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:09:05,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:09:05,998 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:09:05,999 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:09:06,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:09:06,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:09:06,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:09:06,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:09:06,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:09:06,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:09:06,002 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:09:06,004 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:09:06,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:09:06,043 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:09:06,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 164 transitions, 364 flow [2023-08-03 17:09:06,258 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-03 17:09:06,259 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:09:06,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1403 events. 93/1403 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9705 event pairs, 0 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1017. Up to 54 conditions per place. [2023-08-03 17:09:06,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 172 places, 164 transitions, 364 flow [2023-08-03 17:09:06,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 164 transitions, 364 flow [2023-08-03 17:09:06,268 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:09:06,268 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 164 transitions, 364 flow [2023-08-03 17:09:06,268 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 164 transitions, 364 flow [2023-08-03 17:09:06,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 164 transitions, 364 flow [2023-08-03 17:09:06,412 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-03 17:09:06,413 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:09:06,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1403 events. 93/1403 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9705 event pairs, 0 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1017. Up to 54 conditions per place. [2023-08-03 17:09:06,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 7752 [2023-08-03 17:09:09,722 INFO L134 LiptonReduction]: Checked pairs total: 26272 [2023-08-03 17:09:09,722 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-08-03 17:09:09,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:09:09,725 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;@3c2543e5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:09:09,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:09:09,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:09:09,728 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-03 17:09:09,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:09:09,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:09:09,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 17:09:09,729 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:09:09,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:09:09,729 INFO L85 PathProgramCache]: Analyzing trace with hash 27613081, now seen corresponding path program 1 times [2023-08-03 17:09:09,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:09:09,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821335635] [2023-08-03 17:09:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:09:09,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:09:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:09:09,874 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 17:09:09,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:09:09,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821335635] [2023-08-03 17:09:09,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821335635] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:09:09,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:09:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:09:09,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506787832] [2023-08-03 17:09:09,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:09:09,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:09:09,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:09:09,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:09:09,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:09:09,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 285 [2023-08-03 17:09:09,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 60 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 17:09:09,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:09:09,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 285 [2023-08-03 17:09:09,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:10:26,061 INFO L124 PetriNetUnfolderBase]: 633758/884905 cut-off events. [2023-08-03 17:10:26,061 INFO L125 PetriNetUnfolderBase]: For 9470/9470 co-relation queries the response was YES. [2023-08-03 17:10:28,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688264 conditions, 884905 events. 633758/884905 cut-off events. For 9470/9470 co-relation queries the response was YES. Maximal size of possible extension queue 22776. Compared 7724831 event pairs, 105182 based on Foata normal form. 17577/788004 useless extension candidates. Maximal degree in co-relation 1418120. Up to 729279 conditions per place. [2023-08-03 17:10:31,191 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 75 selfloop transitions, 3 changer transitions 0/94 dead transitions. [2023-08-03 17:10:31,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 401 flow [2023-08-03 17:10:31,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:10:31,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:10:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2023-08-03 17:10:31,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801169590643275 [2023-08-03 17:10:31,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2023-08-03 17:10:31,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2023-08-03 17:10:31,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:10:31,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2023-08-03 17:10:31,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 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 17:10:31,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 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 17:10:31,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 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 17:10:31,200 INFO L175 Difference]: Start difference. First operand has 72 places, 60 transitions, 156 flow. Second operand 3 states and 496 transitions. [2023-08-03 17:10:31,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 401 flow [2023-08-03 17:10:31,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 395 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:10:31,219 INFO L231 Difference]: Finished difference. Result has 75 places, 61 transitions, 169 flow [2023-08-03 17:10:31,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=75, PETRI_TRANSITIONS=61} [2023-08-03 17:10:31,220 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-08-03 17:10:31,220 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 61 transitions, 169 flow [2023-08-03 17:10:31,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 17:10:31,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:10:31,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:10:31,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:10:31,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:10:31,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:10:31,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1857443951, now seen corresponding path program 1 times [2023-08-03 17:10:31,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:10:31,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824445064] [2023-08-03 17:10:31,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:10:31,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:10:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:10:31,275 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 17:10:31,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:10:31,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824445064] [2023-08-03 17:10:31,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824445064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:10:31,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:10:31,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:10:31,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072280941] [2023-08-03 17:10:31,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:10:31,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:10:31,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:10:31,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:10:31,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:10:31,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 285 [2023-08-03 17:10:31,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 61 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 17:10:31,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:10:31,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 285 [2023-08-03 17:10:31,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:11:48,985 INFO L124 PetriNetUnfolderBase]: 618374/797606 cut-off events. [2023-08-03 17:11:48,985 INFO L125 PetriNetUnfolderBase]: For 61879/61879 co-relation queries the response was YES. [2023-08-03 17:11:51,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1686019 conditions, 797606 events. 618374/797606 cut-off events. For 61879/61879 co-relation queries the response was YES. Maximal size of possible extension queue 24562. Compared 5847120 event pairs, 518026 based on Foata normal form. 0/699967 useless extension candidates. Maximal degree in co-relation 1110280. Up to 771849 conditions per place. [2023-08-03 17:11:53,954 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 48 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-03 17:11:53,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 66 transitions, 282 flow [2023-08-03 17:11:53,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:11:53,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:11:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-03 17:11:53,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5309941520467836 [2023-08-03 17:11:53,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-03 17:11:53,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-03 17:11:53,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:11:53,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-03 17:11:53,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 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 17:11:53,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 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 17:11:53,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 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 17:11:53,963 INFO L175 Difference]: Start difference. First operand has 75 places, 61 transitions, 169 flow. Second operand 3 states and 454 transitions. [2023-08-03 17:11:53,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 66 transitions, 282 flow [2023-08-03 17:11:53,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:11:53,990 INFO L231 Difference]: Finished difference. Result has 77 places, 62 transitions, 178 flow [2023-08-03 17:11:53,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=77, PETRI_TRANSITIONS=62} [2023-08-03 17:11:53,993 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-08-03 17:11:53,993 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 62 transitions, 178 flow [2023-08-03 17:11:53,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 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 17:11:53,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:11:53,994 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:11:53,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 17:11:53,995 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:11:53,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:11:53,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1472935776, now seen corresponding path program 1 times [2023-08-03 17:11:53,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:11:53,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432609594] [2023-08-03 17:11:53,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:11:53,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:11:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:11:54,008 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:11:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:11:54,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:11:54,022 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:11:54,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-03 17:11:54,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 17:11:54,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 17:11:54,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-03 17:11:54,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-03 17:11:54,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-03 17:11:54,023 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 17:11:54,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 17:11:54,024 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 17:11:54,027 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 17:11:54,028 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 17:11:54,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 05:11:54 BasicIcfg [2023-08-03 17:11:54,073 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 17:11:54,074 INFO L158 Benchmark]: Toolchain (without parser) took 174478.09ms. Allocated memory was 522.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 472.3MB in the beginning and 9.6GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-08-03 17:11:54,074 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 352.3MB. Free memory was 301.7MB in the beginning and 301.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 17:11:54,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.16ms. Allocated memory is still 522.2MB. Free memory was 472.3MB in the beginning and 448.5MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 17:11:54,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.26ms. Allocated memory is still 522.2MB. Free memory was 448.5MB in the beginning and 446.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:11:54,075 INFO L158 Benchmark]: Boogie Preprocessor took 48.53ms. Allocated memory is still 522.2MB. Free memory was 445.8MB in the beginning and 444.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 17:11:54,075 INFO L158 Benchmark]: RCFGBuilder took 688.17ms. Allocated memory is still 522.2MB. Free memory was 443.7MB in the beginning and 480.0MB in the end (delta: -36.2MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. [2023-08-03 17:11:54,075 INFO L158 Benchmark]: TraceAbstraction took 173177.10ms. Allocated memory was 522.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 478.9MB in the beginning and 9.6GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-08-03 17:11:54,077 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 352.3MB. Free memory was 301.7MB in the beginning and 301.6MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 514.16ms. Allocated memory is still 522.2MB. Free memory was 472.3MB in the beginning and 448.5MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.26ms. Allocated memory is still 522.2MB. Free memory was 448.5MB in the beginning and 446.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 48.53ms. Allocated memory is still 522.2MB. Free memory was 445.8MB in the beginning and 444.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 688.17ms. Allocated memory is still 522.2MB. Free memory was 443.7MB in the beginning and 480.0MB in the end (delta: -36.2MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. * TraceAbstraction took 173177.10ms. Allocated memory was 522.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 478.9MB in the beginning and 9.6GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. 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: 3.5s, 138 PlacesBefore, 43 PlacesAfterwards, 136 TransitionsBefore, 37 TransitionsAfterwards, 3172 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 115 TotalNumberOfCompositions, 8123 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4450, independent: 4262, independent conditional: 0, independent unconditional: 4262, dependent: 188, dependent conditional: 0, dependent unconditional: 188, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1666, independent: 1640, independent conditional: 0, independent unconditional: 1640, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4450, independent: 2622, independent conditional: 0, independent unconditional: 2622, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 1666, unknown conditional: 0, unknown unconditional: 1666] , Statistics on independence cache: Total cache size (in pairs): 203, Positive cache size: 187, Positive conditional cache size: 0, Positive unconditional cache size: 187, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 172 PlacesBefore, 72 PlacesAfterwards, 164 TransitionsBefore, 60 TransitionsAfterwards, 7752 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 121 TotalNumberOfCompositions, 26272 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10732, independent: 10364, independent conditional: 0, independent unconditional: 10364, dependent: 368, dependent conditional: 0, dependent unconditional: 368, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3809, independent: 3743, independent conditional: 0, independent unconditional: 3743, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10732, independent: 6621, independent conditional: 0, independent unconditional: 6621, dependent: 302, dependent conditional: 0, dependent unconditional: 302, unknown: 3809, unknown conditional: 0, unknown unconditional: 3809] , Statistics on independence cache: Total cache size (in pairs): 534, Positive cache size: 495, Positive conditional cache size: 0, Positive unconditional cache size: 495, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, 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: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p0_EBX = 0; [L715] 0 int __unbuffered_p1_EAX = 0; [L717] 0 int __unbuffered_p2_EAX = 0; [L719] 0 int __unbuffered_p2_EBX = 0; [L721] 0 int a = 0; [L722] 0 _Bool a$flush_delayed; [L723] 0 int a$mem_tmp; [L724] 0 _Bool a$r_buff0_thd0; [L725] 0 _Bool a$r_buff0_thd1; [L726] 0 _Bool a$r_buff0_thd2; [L727] 0 _Bool a$r_buff0_thd3; [L728] 0 _Bool a$r_buff1_thd0; [L729] 0 _Bool a$r_buff1_thd1; [L730] 0 _Bool a$r_buff1_thd2; [L731] 0 _Bool a$r_buff1_thd3; [L732] 0 _Bool a$read_delayed; [L733] 0 int *a$read_delayed_var; [L734] 0 int a$w_buff0; [L735] 0 _Bool a$w_buff0_used; [L736] 0 int a$w_buff1; [L737] 0 _Bool a$w_buff1_used; [L738] 0 _Bool main$tmp_guard0; [L739] 0 _Bool main$tmp_guard1; [L741] 0 int x = 0; [L743] 0 int y = 0; [L745] 0 int z = 0; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L850] 0 pthread_t t385[2]; [L851] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_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_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=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, t385={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L851] COND TRUE 0 asdf<2 [L851] FCALL, FORK 0 pthread_create(&t385[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_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_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=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(&t385[asdf], ((void *)0), P0, ((void *)0))=-2, t385={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L751] 1 a$w_buff1 = a$w_buff0 [L752] 1 a$w_buff0 = 1 [L753] 1 a$w_buff1_used = a$w_buff0_used [L754] 1 a$w_buff0_used = (_Bool)1 [L755] CALL 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L755] RET 1 __VERIFIER_assert(!(a$w_buff1_used && a$w_buff0_used)) [L756] 1 a$r_buff1_thd0 = a$r_buff0_thd0 [L757] 1 a$r_buff1_thd1 = a$r_buff0_thd1 [L758] 1 a$r_buff1_thd2 = a$r_buff0_thd2 [L759] 1 a$r_buff1_thd3 = a$r_buff0_thd3 [L760] 1 a$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a$flush_delayed=0, a$mem_tmp=0, a$r_buff0_thd0=0, a$r_buff0_thd1=1, a$r_buff0_thd2=0, a$r_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=0, a$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] [L851] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_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_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=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, t385={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L851] COND TRUE 0 asdf<2 [L851] FCALL, FORK 0 pthread_create(&t385[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_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_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=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(&t385[asdf], ((void *)0), P0, ((void *)0))=-1, t385={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z=0] [L751] 2 a$w_buff1 = a$w_buff0 [L752] 2 a$w_buff0 = 1 [L753] 2 a$w_buff1_used = a$w_buff0_used [L754] 2 a$w_buff0_used = (_Bool)1 [L755] 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_p2_EAX=0, __unbuffered_p2_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_buff0_thd3=0, a$r_buff1_thd0=0, a$r_buff1_thd1=0, a$r_buff1_thd2=0, a$r_buff1_thd3=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: 855]: 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: 853]: 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: 851]: 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 7 procedures, 160 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: 5.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 10 procedures, 188 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 168.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 164.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 176 IncrementalHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 2 mSDtfsCounter, 176 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=178occurred 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, 0.2s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 17 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 17:11:54,101 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...