/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_safe031_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:08:46,773 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:08:46,847 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:08:46,852 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:08:46,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:08:46,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:08:46,853 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:08:46,882 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:08:46,883 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:08:46,887 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:08:46,887 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:08:46,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:08:46,888 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:08:46,889 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:08:46,890 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:08:46,890 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:08:46,890 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:08:46,890 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:08:46,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:08:46,891 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:08:46,891 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:08:46,891 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:08:46,891 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:08:46,892 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:08:46,892 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:08:46,892 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:08:46,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:08:46,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:08:46,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:08:46,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:08:46,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:08:46,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:08:46,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:08:46,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:08:46,896 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:08:46,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:08:46,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:08:46,896 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:08:46,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:08:46,896 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:08:46,896 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:08:46,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:08:47,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:08:47,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:08:47,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:08:47,146 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:08:47,146 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:08:47,148 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe031_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 01:08:48,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:08:48,641 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:08:48,642 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe031_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 01:08:48,655 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d1caef3b/153682e45daf4846958ba2a5825e4a9f/FLAGba913bb20 [2023-08-04 01:08:48,668 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d1caef3b/153682e45daf4846958ba2a5825e4a9f [2023-08-04 01:08:48,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:08:48,672 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:08:48,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:08:48,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:08:48,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:08:48,676 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:08:48" (1/1) ... [2023-08-04 01:08:48,677 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:48, skipping insertion in model container [2023-08-04 01:08:48,677 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:08:48" (1/1) ... [2023-08-04 01:08:48,712 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:08:48,834 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_safe031_power.oepc_pso.oepc_rmo.oepc_bound2.i[1013,1026] [2023-08-04 01:08:49,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:08:49,029 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:08:49,043 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_safe031_power.oepc_pso.oepc_rmo.oepc_bound2.i[1013,1026] [2023-08-04 01:08:49,056 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 01:08:49,064 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 01:08:49,104 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:08:49,136 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:08:49,137 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:08:49,142 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:08:49,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49 WrapperNode [2023-08-04 01:08:49,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:08:49,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:08:49,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:08:49,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:08:49,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,203 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 151 [2023-08-04 01:08:49,204 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:08:49,205 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:08:49,205 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:08:49,205 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:08:49,216 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,217 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,228 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,228 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,237 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,246 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,249 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,256 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:08:49,261 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:08:49,261 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:08:49,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:08:49,262 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (1/1) ... [2023-08-04 01:08:49,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:08:49,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:08:49,308 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 01:08:49,320 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 01:08:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:08:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 01:08:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:08:49,344 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:08:49,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:08:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 01:08:49,346 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 01:08:49,346 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 01:08:49,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 01:08:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 01:08:49,347 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 01:08:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:08:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 01:08:49,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:08:49,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:08:49,349 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 01:08:49,508 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:08:49,511 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:08:49,832 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:08:50,005 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:08:50,006 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 01:08:50,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:08:50 BoogieIcfgContainer [2023-08-04 01:08:50,008 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:08:50,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:08:50,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:08:50,012 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:08:50,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:08:48" (1/3) ... [2023-08-04 01:08:50,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dceaa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:08:50, skipping insertion in model container [2023-08-04 01:08:50,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:08:49" (2/3) ... [2023-08-04 01:08:50,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dceaa6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:08:50, skipping insertion in model container [2023-08-04 01:08:50,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:08:50" (3/3) ... [2023-08-04 01:08:50,014 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe031_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 01:08:50,021 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:08:50,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:08:50,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 01:08:50,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:08:50,071 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:08:50,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 01:08:50,198 INFO L124 PetriNetUnfolderBase]: 30/447 cut-off events. [2023-08-04 01:08:50,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:08:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 447 events. 30/447 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1962 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 268. Up to 16 conditions per place. [2023-08-04 01:08:50,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 01:08:50,211 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 98 transitions, 211 flow [2023-08-04 01:08:50,214 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:08:50,221 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 211 flow [2023-08-04 01:08:50,224 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 211 flow [2023-08-04 01:08:50,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 211 flow [2023-08-04 01:08:50,252 INFO L124 PetriNetUnfolderBase]: 6/215 cut-off events. [2023-08-04 01:08:50,252 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:08:50,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 215 events. 6/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 629 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 152. Up to 8 conditions per place. [2023-08-04 01:08:50,255 INFO L119 LiptonReduction]: Number of co-enabled transitions 1312 [2023-08-04 01:08:53,190 INFO L134 LiptonReduction]: Checked pairs total: 3164 [2023-08-04 01:08:53,190 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-04 01:08:53,202 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:08:53,208 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;@4f886c66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:08:53,209 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 01:08:53,213 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:08:53,214 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 01:08:53,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:08:53,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:08:53,214 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:08:53,215 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 01:08:53,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:08:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1912551306, now seen corresponding path program 1 times [2023-08-04 01:08:53,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:08:53,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075495239] [2023-08-04 01:08:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:08:53,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:08:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:08:53,324 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:08:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:08:53,366 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:08:53,368 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:08:53,369 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 01:08:53,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 01:08:53,370 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 01:08:53,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:08:53,371 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:08:53,383 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:08:53,384 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:08:53,384 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:08:53,424 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:08:53,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 151 transitions, 338 flow [2023-08-04 01:08:53,617 INFO L124 PetriNetUnfolderBase]: 93/1378 cut-off events. [2023-08-04 01:08:53,617 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 01:08:53,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1378 events. 93/1378 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9465 event pairs, 0 based on Foata normal form. 0/1213 useless extension candidates. Maximal degree in co-relation 1001. Up to 54 conditions per place. [2023-08-04 01:08:53,628 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 151 transitions, 338 flow [2023-08-04 01:08:53,632 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 122 transitions, 280 flow [2023-08-04 01:08:53,632 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:08:53,632 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 122 transitions, 280 flow [2023-08-04 01:08:53,633 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 122 transitions, 280 flow [2023-08-04 01:08:53,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 122 transitions, 280 flow [2023-08-04 01:08:53,692 INFO L124 PetriNetUnfolderBase]: 12/595 cut-off events. [2023-08-04 01:08:53,692 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 01:08:53,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693 conditions, 595 events. 12/595 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3024 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 479. Up to 27 conditions per place. [2023-08-04 01:08:53,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 3628 [2023-08-04 01:08:56,600 INFO L134 LiptonReduction]: Checked pairs total: 10475 [2023-08-04 01:08:56,601 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-04 01:08:56,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:08:56,611 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;@4f886c66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:08:56,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 01:08:56,620 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:08:56,620 INFO L124 PetriNetUnfolderBase]: 0/60 cut-off events. [2023-08-04 01:08:56,620 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 01:08:56,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:08:56,621 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 01:08:56,621 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 01:08:56,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:08:56,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1296521512, now seen corresponding path program 1 times [2023-08-04 01:08:56,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:08:56,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541980976] [2023-08-04 01:08:56,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:08:56,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:08:56,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:08:56,774 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 01:08:56,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:08:56,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541980976] [2023-08-04 01:08:56,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541980976] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:08:56,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:08:56,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:08:56,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716914957] [2023-08-04 01:08:56,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:08:56,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:08:56,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:08:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:08:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:08:56,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 236 [2023-08-04 01:08:56,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 01:08:56,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:08:56,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 236 [2023-08-04 01:08:56,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:09:10,053 INFO L124 PetriNetUnfolderBase]: 99287/133234 cut-off events. [2023-08-04 01:09:10,053 INFO L125 PetriNetUnfolderBase]: For 8696/8696 co-relation queries the response was YES. [2023-08-04 01:09:10,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270133 conditions, 133234 events. 99287/133234 cut-off events. For 8696/8696 co-relation queries the response was YES. Maximal size of possible extension queue 3978. Compared 880824 event pairs, 78800 based on Foata normal form. 0/121157 useless extension candidates. Maximal degree in co-relation 62597. Up to 126604 conditions per place. [2023-08-04 01:09:10,991 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-04 01:09:10,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 212 flow [2023-08-04 01:09:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:09:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:09:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-08-04 01:09:11,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819209039548022 [2023-08-04 01:09:11,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-08-04 01:09:11,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-08-04 01:09:11,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:09:11,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-08-04 01:09:11,025 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) [2023-08-04 01:09:11,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 01:09:11,031 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 01:09:11,033 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 124 flow. Second operand 3 states and 412 transitions. [2023-08-04 01:09:11,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 212 flow [2023-08-04 01:09:11,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 206 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-04 01:09:11,050 INFO L231 Difference]: Finished difference. Result has 60 places, 45 transitions, 130 flow [2023-08-04 01:09:11,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=45} [2023-08-04 01:09:11,055 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2023-08-04 01:09:11,057 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 45 transitions, 130 flow [2023-08-04 01:09:11,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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 01:09:11,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:09:11,063 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:09:11,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 01:09:11,063 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 01:09:11,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:09:11,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1821104611, now seen corresponding path program 1 times [2023-08-04 01:09:11,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:09:11,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055221403] [2023-08-04 01:09:11,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:11,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:09:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:11,206 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 01:09:11,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:09:11,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055221403] [2023-08-04 01:09:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055221403] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:09:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219938773] [2023-08-04 01:09:11,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:11,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:11,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:09:11,210 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 01:09:11,214 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 01:09:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:11,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:09:11,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:09:11,386 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 01:09:11,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:09:11,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219938773] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:09:11,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:09:11,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:09:11,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035312786] [2023-08-04 01:09:11,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:09:11,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:09:11,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:09:11,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:09:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:09:11,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 236 [2023-08-04 01:09:11,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 45 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 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 01:09:11,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:09:11,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 236 [2023-08-04 01:09:11,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:09:22,800 INFO L124 PetriNetUnfolderBase]: 99263/133354 cut-off events. [2023-08-04 01:09:22,801 INFO L125 PetriNetUnfolderBase]: For 7984/7984 co-relation queries the response was YES. [2023-08-04 01:09:23,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269632 conditions, 133354 events. 99263/133354 cut-off events. For 7984/7984 co-relation queries the response was YES. Maximal size of possible extension queue 3984. Compared 883841 event pairs, 62420 based on Foata normal form. 16/121349 useless extension candidates. Maximal degree in co-relation 70810. Up to 126521 conditions per place. [2023-08-04 01:09:23,704 INFO L140 encePairwiseOnDemand]: 232/236 looper letters, 42 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-08-04 01:09:23,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 242 flow [2023-08-04 01:09:23,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:09:23,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:09:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2023-08-04 01:09:23,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610169491525424 [2023-08-04 01:09:23,707 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2023-08-04 01:09:23,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2023-08-04 01:09:23,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:09:23,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2023-08-04 01:09:23,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 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 01:09:23,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 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 01:09:23,712 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 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 01:09:23,712 INFO L175 Difference]: Start difference. First operand has 60 places, 45 transitions, 130 flow. Second operand 5 states and 662 transitions. [2023-08-04 01:09:23,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 242 flow [2023-08-04 01:09:23,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:09:23,716 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 144 flow [2023-08-04 01:09:23,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-08-04 01:09:23,717 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-04 01:09:23,717 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 144 flow [2023-08-04 01:09:23,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 124.6) internal successors, (623), 5 states have internal predecessors, (623), 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 01:09:23,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:09:23,718 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:09:23,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 01:09:23,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:23,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 01:09:23,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:09:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1548789928, now seen corresponding path program 1 times [2023-08-04 01:09:23,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:09:23,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111575472] [2023-08-04 01:09:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:23,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:09:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:24,001 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:09:24,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:09:24,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111575472] [2023-08-04 01:09:24,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111575472] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:09:24,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644224704] [2023-08-04 01:09:24,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:24,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:24,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:09:24,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:09:24,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:09:24,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:24,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 01:09:24,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:09:24,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:09:24,118 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:09:24,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644224704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:09:24,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:09:24,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 01:09:24,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674067850] [2023-08-04 01:09:24,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:09:24,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:09:24,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:09:24,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:09:24,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:09:24,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 236 [2023-08-04 01:09:24,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 01:09:24,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:09:24,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 236 [2023-08-04 01:09:24,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:09:35,116 INFO L124 PetriNetUnfolderBase]: 97376/132507 cut-off events. [2023-08-04 01:09:35,116 INFO L125 PetriNetUnfolderBase]: For 7480/7480 co-relation queries the response was YES. [2023-08-04 01:09:35,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266841 conditions, 132507 events. 97376/132507 cut-off events. For 7480/7480 co-relation queries the response was YES. Maximal size of possible extension queue 4189. Compared 906841 event pairs, 76147 based on Foata normal form. 0/120626 useless extension candidates. Maximal degree in co-relation 61770. Up to 123534 conditions per place. [2023-08-04 01:09:36,075 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 45 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-04 01:09:36,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 264 flow [2023-08-04 01:09:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:09:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:09:36,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 419 transitions. [2023-08-04 01:09:36,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5918079096045198 [2023-08-04 01:09:36,078 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 419 transitions. [2023-08-04 01:09:36,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 419 transitions. [2023-08-04 01:09:36,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:09:36,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 419 transitions. [2023-08-04 01:09:36,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:09:36,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 01:09:36,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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 01:09:36,082 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 144 flow. Second operand 3 states and 419 transitions. [2023-08-04 01:09:36,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 264 flow [2023-08-04 01:09:36,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 257 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 01:09:36,085 INFO L231 Difference]: Finished difference. Result has 64 places, 46 transitions, 152 flow [2023-08-04 01:09:36,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=64, PETRI_TRANSITIONS=46} [2023-08-04 01:09:36,086 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 7 predicate places. [2023-08-04 01:09:36,086 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 46 transitions, 152 flow [2023-08-04 01:09:36,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 01:09:36,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:09:36,086 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:09:36,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 01:09:36,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 01:09:36,291 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 01:09:36,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:09:36,292 INFO L85 PathProgramCache]: Analyzing trace with hash -75108146, now seen corresponding path program 1 times [2023-08-04 01:09:36,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:09:36,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385582563] [2023-08-04 01:09:36,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:36,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:09:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:09:36,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:09:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385582563] [2023-08-04 01:09:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385582563] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:09:36,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401136509] [2023-08-04 01:09:36,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:36,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:36,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:09:36,358 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:09:36,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 01:09:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:36,445 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:09:36,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:09:36,462 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:09:36,462 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:09:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 01:09:36,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401136509] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:09:36,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:09:36,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:09:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580416210] [2023-08-04 01:09:36,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:09:36,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:09:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:09:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:09:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:09:36,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 236 [2023-08-04 01:09:36,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 46 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 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 01:09:36,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:09:36,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 236 [2023-08-04 01:09:36,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:09:45,418 INFO L124 PetriNetUnfolderBase]: 81082/109165 cut-off events. [2023-08-04 01:09:45,418 INFO L125 PetriNetUnfolderBase]: For 7064/7064 co-relation queries the response was YES. [2023-08-04 01:09:45,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220861 conditions, 109165 events. 81082/109165 cut-off events. For 7064/7064 co-relation queries the response was YES. Maximal size of possible extension queue 3666. Compared 716224 event pairs, 49312 based on Foata normal form. 4/100144 useless extension candidates. Maximal degree in co-relation 57841. Up to 102233 conditions per place. [2023-08-04 01:09:46,153 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 43 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-04 01:09:46,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 257 flow [2023-08-04 01:09:46,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:09:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:09:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 538 transitions. [2023-08-04 01:09:46,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5699152542372882 [2023-08-04 01:09:46,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 538 transitions. [2023-08-04 01:09:46,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 538 transitions. [2023-08-04 01:09:46,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:09:46,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 538 transitions. [2023-08-04 01:09:46,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 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 01:09:46,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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 01:09:46,159 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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 01:09:46,160 INFO L175 Difference]: Start difference. First operand has 64 places, 46 transitions, 152 flow. Second operand 4 states and 538 transitions. [2023-08-04 01:09:46,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 257 flow [2023-08-04 01:09:46,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:09:46,162 INFO L231 Difference]: Finished difference. Result has 66 places, 45 transitions, 147 flow [2023-08-04 01:09:46,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=66, PETRI_TRANSITIONS=45} [2023-08-04 01:09:46,163 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2023-08-04 01:09:46,163 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 45 transitions, 147 flow [2023-08-04 01:09:46,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 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 01:09:46,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:09:46,164 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:09:46,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 01:09:46,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:46,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 01:09:46,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:09:46,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2041842413, now seen corresponding path program 1 times [2023-08-04 01:09:46,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:09:46,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135981228] [2023-08-04 01:09:46,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:46,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:09:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:46,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:09:46,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:09:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135981228] [2023-08-04 01:09:46,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135981228] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:09:46,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458726669] [2023-08-04 01:09:46,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:46,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:46,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:09:46,481 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:09:46,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 01:09:46,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:46,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:09:46,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:09:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:09:46,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:09:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458726669] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:09:46,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:09:46,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 01:09:46,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668708058] [2023-08-04 01:09:46,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:09:46,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:09:46,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:09:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:09:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:09:46,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 236 [2023-08-04 01:09:46,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 45 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 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 01:09:46,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:09:46,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 236 [2023-08-04 01:09:46,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:09:55,298 INFO L124 PetriNetUnfolderBase]: 79842/108037 cut-off events. [2023-08-04 01:09:55,298 INFO L125 PetriNetUnfolderBase]: For 5562/5562 co-relation queries the response was YES. [2023-08-04 01:09:55,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218210 conditions, 108037 events. 79842/108037 cut-off events. For 5562/5562 co-relation queries the response was YES. Maximal size of possible extension queue 3715. Compared 721305 event pairs, 18762 based on Foata normal form. 400/99892 useless extension candidates. Maximal degree in co-relation 57127. Up to 98424 conditions per place. [2023-08-04 01:09:55,993 INFO L140 encePairwiseOnDemand]: 232/236 looper letters, 64 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-08-04 01:09:55,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 345 flow [2023-08-04 01:09:55,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:09:55,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:09:55,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 683 transitions. [2023-08-04 01:09:55,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5788135593220339 [2023-08-04 01:09:55,996 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 683 transitions. [2023-08-04 01:09:55,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 683 transitions. [2023-08-04 01:09:55,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:09:55,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 683 transitions. [2023-08-04 01:09:55,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 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 01:09:56,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 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 01:09:56,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 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 01:09:56,001 INFO L175 Difference]: Start difference. First operand has 66 places, 45 transitions, 147 flow. Second operand 5 states and 683 transitions. [2023-08-04 01:09:56,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 345 flow [2023-08-04 01:09:56,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 338 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:09:56,007 INFO L231 Difference]: Finished difference. Result has 67 places, 45 transitions, 157 flow [2023-08-04 01:09:56,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=67, PETRI_TRANSITIONS=45} [2023-08-04 01:09:56,013 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-08-04 01:09:56,013 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 45 transitions, 157 flow [2023-08-04 01:09:56,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 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 01:09:56,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:09:56,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:09:56,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 01:09:56,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:56,219 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 01:09:56,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:09:56,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2011167002, now seen corresponding path program 1 times [2023-08-04 01:09:56,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:09:56,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49038296] [2023-08-04 01:09:56,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:56,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:09:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 01:09:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:09:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49038296] [2023-08-04 01:09:56,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49038296] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:09:56,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539469437] [2023-08-04 01:09:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:09:56,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:09:56,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:09:56,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:09:56,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 01:09:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:09:56,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:09:56,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:09:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 01:09:56,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:09:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 01:09:56,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539469437] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:09:56,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:09:56,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 01:09:56,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513941096] [2023-08-04 01:09:56,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:09:56,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:09:56,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:09:56,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:09:56,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:09:56,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 236 [2023-08-04 01:09:56,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 45 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 01:09:56,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:09:56,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 236 [2023-08-04 01:09:56,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:10:04,149 INFO L124 PetriNetUnfolderBase]: 69178/92893 cut-off events. [2023-08-04 01:10:04,149 INFO L125 PetriNetUnfolderBase]: For 7378/7378 co-relation queries the response was YES. [2023-08-04 01:10:04,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189054 conditions, 92893 events. 69178/92893 cut-off events. For 7378/7378 co-relation queries the response was YES. Maximal size of possible extension queue 3502. Compared 596744 event pairs, 40842 based on Foata normal form. 80/85244 useless extension candidates. Maximal degree in co-relation 49429. Up to 84569 conditions per place. [2023-08-04 01:10:04,745 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 58 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-08-04 01:10:04,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 69 transitions, 323 flow [2023-08-04 01:10:04,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:10:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:10:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 553 transitions. [2023-08-04 01:10:04,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5858050847457628 [2023-08-04 01:10:04,747 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 553 transitions. [2023-08-04 01:10:04,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 553 transitions. [2023-08-04 01:10:04,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:10:04,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 553 transitions. [2023-08-04 01:10:04,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.25) internal successors, (553), 4 states have internal predecessors, (553), 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 01:10:04,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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 01:10:04,751 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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 01:10:04,751 INFO L175 Difference]: Start difference. First operand has 67 places, 45 transitions, 157 flow. Second operand 4 states and 553 transitions. [2023-08-04 01:10:04,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 69 transitions, 323 flow [2023-08-04 01:10:04,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 69 transitions, 318 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 01:10:04,754 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 150 flow [2023-08-04 01:10:04,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-08-04 01:10:04,755 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2023-08-04 01:10:04,755 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 150 flow [2023-08-04 01:10:04,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 01:10:04,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:10:04,755 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:10:04,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 01:10:04,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:10:04,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 01:10:04,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:10:04,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1212605398, now seen corresponding path program 1 times [2023-08-04 01:10:04,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:10:04,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188660207] [2023-08-04 01:10:04,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:10:04,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:10:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:10:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 01:10:05,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:10:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188660207] [2023-08-04 01:10:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188660207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:10:05,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:10:05,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 01:10:05,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707582413] [2023-08-04 01:10:05,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:10:05,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 01:10:05,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:10:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 01:10:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 01:10:05,056 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 236 [2023-08-04 01:10:05,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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 01:10:05,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:10:05,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 236 [2023-08-04 01:10:05,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:10:09,507 INFO L124 PetriNetUnfolderBase]: 39738/55149 cut-off events. [2023-08-04 01:10:09,507 INFO L125 PetriNetUnfolderBase]: For 5818/5818 co-relation queries the response was YES. [2023-08-04 01:10:09,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114350 conditions, 55149 events. 39738/55149 cut-off events. For 5818/5818 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 350917 event pairs, 2738 based on Foata normal form. 6400/57180 useless extension candidates. Maximal degree in co-relation 44257. Up to 38800 conditions per place. [2023-08-04 01:10:09,724 INFO L140 encePairwiseOnDemand]: 234/236 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2023-08-04 01:10:09,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 74 transitions, 342 flow [2023-08-04 01:10:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:10:09,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:10:09,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 562 transitions. [2023-08-04 01:10:09,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953389830508474 [2023-08-04 01:10:09,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 562 transitions. [2023-08-04 01:10:09,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 562 transitions. [2023-08-04 01:10:09,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:10:09,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 562 transitions. [2023-08-04 01:10:09,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.5) internal successors, (562), 4 states have internal predecessors, (562), 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 01:10:09,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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 01:10:09,729 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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 01:10:09,729 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 150 flow. Second operand 4 states and 562 transitions. [2023-08-04 01:10:09,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 74 transitions, 342 flow [2023-08-04 01:10:10,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 335 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:10:10,375 INFO L231 Difference]: Finished difference. Result has 66 places, 0 transitions, 0 flow [2023-08-04 01:10:10,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=66, PETRI_TRANSITIONS=0} [2023-08-04 01:10:10,375 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 9 predicate places. [2023-08-04 01:10:10,375 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 0 transitions, 0 flow [2023-08-04 01:10:10,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.75) internal successors, (511), 4 states have internal predecessors, (511), 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 01:10:10,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 01:10:10,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 01:10:10,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 01:10:10,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 01:10:10,376 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:10:10,377 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-04 01:10:10,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 151 transitions, 338 flow [2023-08-04 01:10:10,477 INFO L124 PetriNetUnfolderBase]: 93/1378 cut-off events. [2023-08-04 01:10:10,477 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 01:10:10,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1378 events. 93/1378 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9465 event pairs, 0 based on Foata normal form. 0/1213 useless extension candidates. Maximal degree in co-relation 1001. Up to 54 conditions per place. [2023-08-04 01:10:10,483 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 151 transitions, 338 flow [2023-08-04 01:10:10,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 150 transitions, 332 flow [2023-08-04 01:10:10,486 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:10:10,486 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 150 transitions, 332 flow [2023-08-04 01:10:10,486 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 150 transitions, 332 flow [2023-08-04 01:10:10,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 150 transitions, 332 flow [2023-08-04 01:10:10,582 INFO L124 PetriNetUnfolderBase]: 93/1377 cut-off events. [2023-08-04 01:10:10,582 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 01:10:10,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1377 events. 93/1377 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9454 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 998. Up to 54 conditions per place. [2023-08-04 01:10:10,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 6040 [2023-08-04 01:10:13,541 INFO L134 LiptonReduction]: Checked pairs total: 15793 [2023-08-04 01:10:13,542 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-04 01:10:13,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:10:13,544 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;@4f886c66, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:10:13,544 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:10:13,546 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:10:13,546 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 01:10:13,546 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:10:13,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:10:13,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 01:10:13,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 01:10:13,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:10:13,547 INFO L85 PathProgramCache]: Analyzing trace with hash 852309097, now seen corresponding path program 1 times [2023-08-04 01:10:13,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:10:13,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075567585] [2023-08-04 01:10:13,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:10:13,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:10:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:10:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:10:13,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:10:13,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075567585] [2023-08-04 01:10:13,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075567585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:10:13,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:10:13,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:10:13,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440359010] [2023-08-04 01:10:13,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:10:13,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:10:13,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:10:13,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:10:13,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:10:13,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 268 [2023-08-04 01:10:13,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:10:13,591 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:10:13,591 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 268 [2023-08-04 01:10:13,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:10:56,347 INFO L124 PetriNetUnfolderBase]: 363272/477707 cut-off events. [2023-08-04 01:10:56,347 INFO L125 PetriNetUnfolderBase]: For 9568/9568 co-relation queries the response was YES. [2023-08-04 01:10:57,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945723 conditions, 477707 events. 363272/477707 cut-off events. For 9568/9568 co-relation queries the response was YES. Maximal size of possible extension queue 11849. Compared 3312150 event pairs, 293960 based on Foata normal form. 0/416806 useless extension candidates. Maximal degree in co-relation 203922. Up to 455689 conditions per place. [2023-08-04 01:10:59,224 INFO L140 encePairwiseOnDemand]: 264/268 looper letters, 42 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-04 01:10:59,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 226 flow [2023-08-04 01:10:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:10:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:10:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-04 01:10:59,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199004975124378 [2023-08-04 01:10:59,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-04 01:10:59,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-04 01:10:59,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:10:59,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-04 01:10:59,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2023-08-04 01:10:59,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 01:10:59,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 01:10:59,229 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 130 flow. Second operand 3 states and 418 transitions. [2023-08-04 01:10:59,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 226 flow [2023-08-04 01:10:59,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 222 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 01:10:59,240 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 136 flow [2023-08-04 01:10:59,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2023-08-04 01:10:59,241 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-08-04 01:10:59,241 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 136 flow [2023-08-04 01:10:59,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:10:59,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:10:59,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:10:59,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 01:10:59,242 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 01:10:59,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:10:59,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1138349135, now seen corresponding path program 1 times [2023-08-04 01:10:59,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:10:59,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715777437] [2023-08-04 01:10:59,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:10:59,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:10:59,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:10:59,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:10:59,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:10:59,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715777437] [2023-08-04 01:10:59,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715777437] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:10:59,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432193052] [2023-08-04 01:10:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:10:59,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:10:59,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:10:59,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:10:59,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 01:10:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:10:59,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:10:59,372 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:10:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:10:59,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:10:59,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:10:59,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432193052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:10:59,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:10:59,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:10:59,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704326182] [2023-08-04 01:10:59,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:10:59,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:10:59,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:10:59,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:10:59,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:10:59,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 268 [2023-08-04 01:10:59,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 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 01:10:59,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:10:59,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 268 [2023-08-04 01:10:59,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:11:30,871 INFO L124 PetriNetUnfolderBase]: 301714/393605 cut-off events. [2023-08-04 01:11:30,872 INFO L125 PetriNetUnfolderBase]: For 6296/6296 co-relation queries the response was YES. [2023-08-04 01:11:32,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777862 conditions, 393605 events. 301714/393605 cut-off events. For 6296/6296 co-relation queries the response was YES. Maximal size of possible extension queue 10196. Compared 2624094 event pairs, 190828 based on Foata normal form. 4/345224 useless extension candidates. Maximal degree in co-relation 203698. Up to 375577 conditions per place. [2023-08-04 01:11:33,383 INFO L140 encePairwiseOnDemand]: 264/268 looper letters, 47 selfloop transitions, 3 changer transitions 1/60 dead transitions. [2023-08-04 01:11:33,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 260 flow [2023-08-04 01:11:33,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:11:33,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:11:33,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2023-08-04 01:11:33,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5074626865671642 [2023-08-04 01:11:33,385 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2023-08-04 01:11:33,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2023-08-04 01:11:33,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:11:33,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2023-08-04 01:11:33,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 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 01:11:33,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 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 01:11:33,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 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 01:11:33,388 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 136 flow. Second operand 4 states and 544 transitions. [2023-08-04 01:11:33,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 260 flow [2023-08-04 01:11:33,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:11:33,390 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 148 flow [2023-08-04 01:11:33,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-08-04 01:11:33,391 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-08-04 01:11:33,391 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 148 flow [2023-08-04 01:11:33,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.4) internal successors, (627), 5 states have internal predecessors, (627), 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 01:11:33,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:11:33,391 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:11:33,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 01:11:33,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:11:33,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 01:11:33,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:11:33,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1425507782, now seen corresponding path program 1 times [2023-08-04 01:11:33,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:11:33,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759625916] [2023-08-04 01:11:33,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:11:33,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:11:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:11:33,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:11:33,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:11:33,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759625916] [2023-08-04 01:11:33,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759625916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:11:33,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:11:33,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 01:11:33,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155255530] [2023-08-04 01:11:33,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:11:33,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:11:33,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:11:33,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:11:33,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:11:33,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 268 [2023-08-04 01:11:33,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:11:33,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:11:33,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 268 [2023-08-04 01:11:33,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:12:03,030 INFO L124 PetriNetUnfolderBase]: 259610/340381 cut-off events. [2023-08-04 01:12:03,030 INFO L125 PetriNetUnfolderBase]: For 5801/5801 co-relation queries the response was YES. [2023-08-04 01:12:04,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670942 conditions, 340381 events. 259610/340381 cut-off events. For 5801/5801 co-relation queries the response was YES. Maximal size of possible extension queue 8958. Compared 2302041 event pairs, 42938 based on Foata normal form. 0/304668 useless extension candidates. Maximal degree in co-relation 175761. Up to 297729 conditions per place. [2023-08-04 01:12:05,251 INFO L140 encePairwiseOnDemand]: 263/268 looper letters, 63 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-04 01:12:05,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 345 flow [2023-08-04 01:12:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:12:05,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:12:05,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-08-04 01:12:05,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572139303482587 [2023-08-04 01:12:05,253 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-08-04 01:12:05,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-08-04 01:12:05,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:12:05,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-08-04 01:12:05,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 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 01:12:05,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 01:12:05,255 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 01:12:05,255 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 148 flow. Second operand 3 states and 448 transitions. [2023-08-04 01:12:05,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 345 flow [2023-08-04 01:12:05,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 75 transitions, 338 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 01:12:05,257 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 162 flow [2023-08-04 01:12:05,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2023-08-04 01:12:05,258 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-08-04 01:12:05,258 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 162 flow [2023-08-04 01:12:05,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:12:05,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:12:05,258 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:12:05,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 01:12:05,258 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 01:12:05,259 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:12:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1240768958, now seen corresponding path program 1 times [2023-08-04 01:12:05,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:12:05,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791895438] [2023-08-04 01:12:05,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:12:05,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:12:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:12:05,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:12:05,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:12:05,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791895438] [2023-08-04 01:12:05,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791895438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:12:05,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:12:05,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 01:12:05,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724006951] [2023-08-04 01:12:05,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:12:05,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:12:05,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:12:05,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:12:05,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:12:05,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 268 [2023-08-04 01:12:05,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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 01:12:05,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:12:05,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 268 [2023-08-04 01:12:05,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:12:33,302 INFO L124 PetriNetUnfolderBase]: 253322/332877 cut-off events. [2023-08-04 01:12:33,302 INFO L125 PetriNetUnfolderBase]: For 26406/26406 co-relation queries the response was YES. [2023-08-04 01:12:34,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698622 conditions, 332877 events. 253322/332877 cut-off events. For 26406/26406 co-relation queries the response was YES. Maximal size of possible extension queue 9180. Compared 2240192 event pairs, 212698 based on Foata normal form. 0/300428 useless extension candidates. Maximal degree in co-relation 182389. Up to 315145 conditions per place. [2023-08-04 01:12:35,481 INFO L140 encePairwiseOnDemand]: 265/268 looper letters, 51 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-04 01:12:35,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 293 flow [2023-08-04 01:12:35,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:12:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:12:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-04 01:12:35,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5261194029850746 [2023-08-04 01:12:35,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-04 01:12:35,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-04 01:12:35,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:12:35,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-04 01:12:35,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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 01:12:35,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 01:12:35,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 01:12:35,486 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 162 flow. Second operand 3 states and 423 transitions. [2023-08-04 01:12:35,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 293 flow [2023-08-04 01:12:35,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 62 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:12:35,494 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 171 flow [2023-08-04 01:12:35,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=171, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-04 01:12:35,494 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2023-08-04 01:12:35,494 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 171 flow [2023-08-04 01:12:35,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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 01:12:35,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:12:35,495 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:12:35,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 01:12:35,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 01:12:35,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:12:35,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1378361859, now seen corresponding path program 1 times [2023-08-04 01:12:35,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:12:35,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111120893] [2023-08-04 01:12:35,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:12:35,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:12:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:12:35,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:12:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:12:35,529 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:12:35,530 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:12:35,530 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 01:12:35,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 01:12:35,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 01:12:35,530 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 01:12:35,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 01:12:35,530 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 01:12:35,531 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 01:12:35,534 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 01:12:35,534 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 01:12:35,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 01:12:35 BasicIcfg [2023-08-04 01:12:35,580 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 01:12:35,580 INFO L158 Benchmark]: Toolchain (without parser) took 226908.63ms. Allocated memory was 549.5MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 511.4MB in the beginning and 11.1GB in the end (delta: -10.6GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2023-08-04 01:12:35,580 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 375.4MB. Free memory is still 323.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:12:35,581 INFO L158 Benchmark]: CACSL2BoogieTranslator took 471.41ms. Allocated memory is still 549.5MB. Free memory was 511.4MB in the beginning and 488.1MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 01:12:35,581 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.35ms. Allocated memory is still 549.5MB. Free memory was 488.1MB in the beginning and 485.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 01:12:35,581 INFO L158 Benchmark]: Boogie Preprocessor took 51.36ms. Allocated memory is still 549.5MB. Free memory was 485.6MB in the beginning and 483.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:12:35,581 INFO L158 Benchmark]: RCFGBuilder took 747.40ms. Allocated memory is still 549.5MB. Free memory was 483.5MB in the beginning and 509.1MB in the end (delta: -25.6MB). Peak memory consumption was 34.7MB. Max. memory is 16.0GB. [2023-08-04 01:12:35,581 INFO L158 Benchmark]: TraceAbstraction took 225570.26ms. Allocated memory was 549.5MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 509.1MB in the beginning and 11.1GB in the end (delta: -10.6GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2023-08-04 01:12:35,583 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 375.4MB. Free memory is still 323.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 471.41ms. Allocated memory is still 549.5MB. Free memory was 511.4MB in the beginning and 488.1MB in the end (delta: 23.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.35ms. Allocated memory is still 549.5MB. Free memory was 488.1MB in the beginning and 485.6MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 51.36ms. Allocated memory is still 549.5MB. Free memory was 485.6MB in the beginning and 483.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 747.40ms. Allocated memory is still 549.5MB. Free memory was 483.5MB in the beginning and 509.1MB in the end (delta: -25.6MB). Peak memory consumption was 34.7MB. Max. memory is 16.0GB. * TraceAbstraction took 225570.26ms. Allocated memory was 549.5MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 509.1MB in the beginning and 11.1GB in the end (delta: -10.6GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 103 PlacesBefore, 33 PlacesAfterwards, 98 TransitionsBefore, 26 TransitionsAfterwards, 1312 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 78 TotalNumberOfCompositions, 3164 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1480, independent: 1364, independent conditional: 0, independent unconditional: 1364, dependent: 116, dependent conditional: 0, dependent unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 656, independent: 640, independent conditional: 0, independent unconditional: 640, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1480, independent: 724, independent conditional: 0, independent unconditional: 724, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 656, unknown conditional: 0, unknown unconditional: 656] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 133 PlacesBefore, 57 PlacesAfterwards, 122 TransitionsBefore, 44 TransitionsAfterwards, 3628 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 10475 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4005, independent: 3787, independent conditional: 0, independent unconditional: 3787, dependent: 218, dependent conditional: 0, dependent unconditional: 218, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1692, independent: 1660, independent conditional: 0, independent unconditional: 1660, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4005, independent: 2127, independent conditional: 0, independent unconditional: 2127, dependent: 186, dependent conditional: 0, dependent unconditional: 186, unknown: 1692, unknown conditional: 0, unknown unconditional: 1692] , Statistics on independence cache: Total cache size (in pairs): 253, Positive cache size: 234, Positive conditional cache size: 0, Positive unconditional cache size: 234, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 158 PlacesBefore, 61 PlacesAfterwards, 150 TransitionsBefore, 49 TransitionsAfterwards, 6040 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 117 TotalNumberOfCompositions, 15793 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6136, independent: 5882, independent conditional: 0, independent unconditional: 5882, dependent: 254, dependent conditional: 0, dependent unconditional: 254, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2997, independent: 2933, independent conditional: 0, independent unconditional: 2933, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6136, independent: 2949, independent conditional: 0, independent unconditional: 2949, dependent: 190, dependent conditional: 0, dependent unconditional: 190, unknown: 2997, unknown conditional: 0, unknown unconditional: 2997] , Statistics on independence cache: Total cache size (in pairs): 269, Positive cache size: 240, Positive conditional cache size: 0, Positive unconditional cache size: 240, Negative cache size: 29, Negative conditional cache size: 0, Negative unconditional cache size: 29, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L713] 0 _Bool main$tmp_guard0; [L714] 0 _Bool main$tmp_guard1; [L716] 0 int x = 0; [L717] 0 _Bool x$flush_delayed; [L718] 0 int x$mem_tmp; [L719] 0 _Bool x$r_buff0_thd0; [L720] 0 _Bool x$r_buff0_thd1; [L721] 0 _Bool x$r_buff0_thd2; [L722] 0 _Bool x$r_buff0_thd3; [L723] 0 _Bool x$r_buff1_thd0; [L724] 0 _Bool x$r_buff1_thd1; [L725] 0 _Bool x$r_buff1_thd2; [L726] 0 _Bool x$r_buff1_thd3; [L727] 0 _Bool x$read_delayed; [L728] 0 int *x$read_delayed_var; [L729] 0 int x$w_buff0; [L730] 0 _Bool x$w_buff0_used; [L731] 0 int x$w_buff1; [L732] 0 _Bool x$w_buff1_used; [L734] 0 int y = 0; [L736] 0 int z = 0; [L737] 0 _Bool weak$$choice0; [L738] 0 _Bool weak$$choice2; [L829] 0 pthread_t t2513[2]; [L830] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2513={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L830] COND TRUE 0 asdf<2 [L830] FCALL, FORK 0 pthread_create(&t2513[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2513[asdf], ((void *)0), P0, ((void *)0))=-4, t2513={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L830] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2513={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L830] COND TRUE 0 asdf<2 [L830] FCALL, FORK 0 pthread_create(&t2513[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2513[asdf], ((void *)0), P0, ((void *)0))=-3, t2513={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L830] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2513={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L830] COND FALSE 0 !(asdf<2) [L831] 0 pthread_t t2514[2]; [L832] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2513={5:0}, t2514={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L832] COND TRUE 0 asdf<2 [L832] FCALL, FORK 0 pthread_create(&t2514[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2514[asdf], ((void *)0), P1, ((void *)0))=-2, t2513={5:0}, t2514={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L772] 3 x$w_buff1 = x$w_buff0 [L773] 3 x$w_buff0 = 1 [L774] 3 x$w_buff1_used = x$w_buff0_used [L775] 3 x$w_buff0_used = (_Bool)1 [L776] CALL 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND FALSE 3 !(!expression) [L776] RET 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L777] 3 x$r_buff1_thd0 = x$r_buff0_thd0 [L778] 3 x$r_buff1_thd1 = x$r_buff0_thd1 [L779] 3 x$r_buff1_thd2 = x$r_buff0_thd2 [L780] 3 x$r_buff1_thd3 = x$r_buff0_thd3 [L781] 3 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L832] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2513={5:0}, t2514={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L832] COND TRUE 0 asdf<2 [L832] FCALL, FORK 0 pthread_create(&t2514[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2514[asdf], ((void *)0), P1, ((void *)0))=-1, t2513={5:0}, t2514={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L772] 4 x$w_buff1 = x$w_buff0 [L773] 4 x$w_buff0 = 1 [L774] 4 x$w_buff1_used = x$w_buff0_used [L775] 4 x$w_buff0_used = (_Bool)1 [L776] CALL 4 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L19] COND TRUE 4 !expression [L19] 4 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=1, x$w_buff0_used=1, x$w_buff1=1, x$w_buff1_used=1, x=0, y=0, z=0] - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 147 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: 3.3s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 10 procedures, 171 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: 76.9s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 71.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 323 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 264 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 688 IncrementalHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 15 mSDtfsCounter, 688 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=157occurred in iteration=5, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 874 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 124/141 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 1 thread instances CFG has 10 procedures, 171 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: 145.2s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 141.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 95 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 66 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 356 IncrementalHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 2 mSDtfsCounter, 356 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=4, InterpolantAutomatonStates: 13, 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, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 53 ConstructedInterpolants, 0 QuantifiedInterpolants, 111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 152 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 01:12:35,603 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...