/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe019_power.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 00:44:35,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 00:44:35,956 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 00:44:35,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 00:44:35,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 00:44:35,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 00:44:35,961 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 00:44:35,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 00:44:35,986 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 00:44:35,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 00:44:35,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 00:44:35,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 00:44:35,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 00:44:35,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 00:44:35,991 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 00:44:35,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 00:44:35,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 00:44:35,991 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 00:44:35,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 00:44:35,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 00:44:35,991 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 00:44:35,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 00:44:35,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 00:44:35,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 00:44:35,992 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 00:44:35,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 00:44:35,993 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 00:44:35,993 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 00:44:35,993 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 00:44:35,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 00:44:35,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:44:35,994 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 00:44:35,994 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 00:44:35,994 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 00:44:35,994 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 00:44:35,994 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 00:44:35,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 00:44:35,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 00:44:35,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 00:44:35,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 00:44:35,995 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 00:44:35,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 00:44:36,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 00:44:36,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 00:44:36,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 00:44:36,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 00:44:36,187 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 00:44:36,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe019_power.oepc_bound2.i [2023-08-04 00:44:37,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 00:44:37,322 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 00:44:37,323 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe019_power.oepc_bound2.i [2023-08-04 00:44:37,332 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310008502/db7ffbc871094f5abebba8beb06f4f14/FLAG45cbc6f42 [2023-08-04 00:44:37,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/310008502/db7ffbc871094f5abebba8beb06f4f14 [2023-08-04 00:44:37,342 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 00:44:37,343 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 00:44:37,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 00:44:37,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 00:44:37,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 00:44:37,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1a825b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37, skipping insertion in model container [2023-08-04 00:44:37,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,405 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 00:44:37,534 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_safe019_power.oepc_bound2.i[995,1008] [2023-08-04 00:44:37,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:44:37,727 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 00:44:37,736 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_safe019_power.oepc_bound2.i[995,1008] [2023-08-04 00:44:37,751 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 00:44:37,752 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 00:44:37,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:44:37,814 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:44:37,815 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:44:37,819 INFO L206 MainTranslator]: Completed translation [2023-08-04 00:44:37,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37 WrapperNode [2023-08-04 00:44:37,820 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 00:44:37,821 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 00:44:37,821 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 00:44:37,821 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 00:44:37,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,879 INFO L138 Inliner]: procedures = 177, calls = 87, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 217 [2023-08-04 00:44:37,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 00:44:37,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 00:44:37,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 00:44:37,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 00:44:37,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,929 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 00:44:37,933 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 00:44:37,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 00:44:37,933 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 00:44:37,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (1/1) ... [2023-08-04 00:44:37,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:44:37,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:44:37,960 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 00:44:37,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 00:44:37,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 00:44:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 00:44:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 00:44:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 00:44:37,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 00:44:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 00:44:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 00:44:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 00:44:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 00:44:37,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 00:44:37,988 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 00:44:37,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 00:44:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 00:44:37,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 00:44:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 00:44:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 00:44:37,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 00:44:37,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 00:44:37,990 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 00:44:38,094 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 00:44:38,096 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 00:44:38,411 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 00:44:38,650 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 00:44:38,650 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 00:44:38,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:44:38 BoogieIcfgContainer [2023-08-04 00:44:38,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 00:44:38,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 00:44:38,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 00:44:38,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 00:44:38,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 12:44:37" (1/3) ... [2023-08-04 00:44:38,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1346fc66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:44:38, skipping insertion in model container [2023-08-04 00:44:38,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:44:37" (2/3) ... [2023-08-04 00:44:38,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1346fc66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:44:38, skipping insertion in model container [2023-08-04 00:44:38,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:44:38" (3/3) ... [2023-08-04 00:44:38,657 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe019_power.oepc_bound2.i [2023-08-04 00:44:38,662 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 00:44:38,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 00:44:38,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 00:44:38,668 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 00:44:38,709 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:44:38,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 171 transitions, 362 flow [2023-08-04 00:44:38,850 INFO L124 PetriNetUnfolderBase]: 62/929 cut-off events. [2023-08-04 00:44:38,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:44:38,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 929 events. 62/929 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5582 event pairs, 0 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 566. Up to 32 conditions per place. [2023-08-04 00:44:38,856 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 171 transitions, 362 flow [2023-08-04 00:44:38,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 140 transitions, 300 flow [2023-08-04 00:44:38,861 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:44:38,867 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 140 transitions, 300 flow [2023-08-04 00:44:38,868 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 140 transitions, 300 flow [2023-08-04 00:44:38,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 140 transitions, 300 flow [2023-08-04 00:44:38,899 INFO L124 PetriNetUnfolderBase]: 14/433 cut-off events. [2023-08-04 00:44:38,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:44:38,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 433 events. 14/433 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1849 event pairs, 0 based on Foata normal form. 0/405 useless extension candidates. Maximal degree in co-relation 318. Up to 16 conditions per place. [2023-08-04 00:44:38,903 INFO L119 LiptonReduction]: Number of co-enabled transitions 1960 [2023-08-04 00:44:44,345 INFO L134 LiptonReduction]: Checked pairs total: 4891 [2023-08-04 00:44:44,345 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-04 00:44:44,354 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:44:44,364 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;@55858966, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:44:44,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 00:44:44,368 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:44:44,368 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 00:44:44,368 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:44:44,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:44:44,368 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 00:44:44,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:44:44,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:44:44,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1644198701, now seen corresponding path program 1 times [2023-08-04 00:44:44,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:44:44,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17754394] [2023-08-04 00:44:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:44:44,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:44:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:44:44,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 00:44:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:44:44,550 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 00:44:44,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 00:44:44,552 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 00:44:44,553 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 00:44:44,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 00:44:44,554 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 00:44:44,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 00:44:44,555 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 00:44:44,559 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 00:44:44,560 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 00:44:44,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 00:44:44,598 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:44:44,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 199 transitions, 446 flow [2023-08-04 00:44:45,084 INFO L124 PetriNetUnfolderBase]: 282/4219 cut-off events. [2023-08-04 00:44:45,084 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 00:44:45,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4508 conditions, 4219 events. 282/4219 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 40319 event pairs, 0 based on Foata normal form. 0/3736 useless extension candidates. Maximal degree in co-relation 3068. Up to 162 conditions per place. [2023-08-04 00:44:45,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 199 transitions, 446 flow [2023-08-04 00:44:45,110 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 168 transitions, 384 flow [2023-08-04 00:44:45,110 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:44:45,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 168 transitions, 384 flow [2023-08-04 00:44:45,111 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 168 transitions, 384 flow [2023-08-04 00:44:45,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 168 transitions, 384 flow [2023-08-04 00:44:45,248 INFO L124 PetriNetUnfolderBase]: 39/1708 cut-off events. [2023-08-04 00:44:45,248 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 00:44:45,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 1708 events. 39/1708 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 13100 event pairs, 0 based on Foata normal form. 0/1630 useless extension candidates. Maximal degree in co-relation 1394. Up to 81 conditions per place. [2023-08-04 00:44:45,276 INFO L119 LiptonReduction]: Number of co-enabled transitions 5260 [2023-08-04 00:44:51,650 INFO L134 LiptonReduction]: Checked pairs total: 14948 [2023-08-04 00:44:51,651 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-08-04 00:44:51,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:44:51,653 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;@55858966, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:44:51,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 00:44:51,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:44:51,659 INFO L124 PetriNetUnfolderBase]: 0/84 cut-off events. [2023-08-04 00:44:51,659 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 00:44:51,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:44:51,659 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 00:44:51,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:44:51,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:44:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1541457142, now seen corresponding path program 1 times [2023-08-04 00:44:51,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:44:51,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767116893] [2023-08-04 00:44:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:44:51,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:44:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:44:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 00:44:51,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:44:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767116893] [2023-08-04 00:44:51,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767116893] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:44:51,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675397414] [2023-08-04 00:44:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:44:51,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:44:51,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:44:51,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:44:51,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 00:44:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:44:51,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:44:51,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:44:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 00:44:51,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:44:51,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675397414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:44:51,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:44:51,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 00:44:51,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068771910] [2023-08-04 00:44:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:44:51,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:44:51,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:44:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:44:52,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:44:52,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 322 [2023-08-04 00:44:52,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:44:52,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:44:52,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 322 [2023-08-04 00:44:52,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:46:29,258 INFO L124 PetriNetUnfolderBase]: 673616/855679 cut-off events. [2023-08-04 00:46:29,259 INFO L125 PetriNetUnfolderBase]: For 49884/49884 co-relation queries the response was YES. [2023-08-04 00:46:31,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743741 conditions, 855679 events. 673616/855679 cut-off events. For 49884/49884 co-relation queries the response was YES. Maximal size of possible extension queue 18536. Compared 5792618 event pairs, 505076 based on Foata normal form. 0/841401 useless extension candidates. Maximal degree in co-relation 485888. Up to 830096 conditions per place. [2023-08-04 00:46:34,745 INFO L140 encePairwiseOnDemand]: 318/322 looper letters, 44 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-04 00:46:34,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 262 flow [2023-08-04 00:46:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:46:34,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:46:34,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 905 transitions. [2023-08-04 00:46:34,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.562111801242236 [2023-08-04 00:46:34,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 905 transitions. [2023-08-04 00:46:34,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 905 transitions. [2023-08-04 00:46:34,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:46:34,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 905 transitions. [2023-08-04 00:46:34,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:46:34,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:46:34,785 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 322.0) internal successors, (1932), 6 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:46:34,786 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 150 flow. Second operand 5 states and 905 transitions. [2023-08-04 00:46:34,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 262 flow [2023-08-04 00:46:34,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 255 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-04 00:46:34,939 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 160 flow [2023-08-04 00:46:34,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=322, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2023-08-04 00:46:34,944 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-08-04 00:46:34,944 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 160 flow [2023-08-04 00:46:34,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:46:34,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:46:34,945 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:46:34,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 00:46:35,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:46:35,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:46:35,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:46:35,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1330212202, now seen corresponding path program 1 times [2023-08-04 00:46:35,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:46:35,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745290943] [2023-08-04 00:46:35,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:46:35,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:46:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:46:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 00:46:35,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:46:35,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745290943] [2023-08-04 00:46:35,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745290943] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:46:35,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:46:35,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:46:35,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243670837] [2023-08-04 00:46:35,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:46:35,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:46:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:46:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:46:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:46:35,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 322 [2023-08-04 00:46:35,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:46:35,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:46:35,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 322 [2023-08-04 00:46:35,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand