/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:12:37,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:12:37,258 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:12:37,262 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:12:37,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:12:37,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:12:37,263 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:12:37,282 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:12:37,282 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:12:37,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:12:37,283 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:12:37,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:12:37,284 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:12:37,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:12:37,284 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:12:37,284 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:12:37,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:12:37,285 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:12:37,285 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:12:37,285 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:12:37,286 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:12:37,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:12:37,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:12:37,289 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:12:37,289 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:12:37,289 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:12:37,289 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:12:37,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:12:37,290 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:12:37,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:12:37,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:12:37,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:12:37,291 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:12:37,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:12:37,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:12:37,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:12:37,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:12:37,292 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:12:37,292 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:12:37,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:12:37,292 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:12:37,296 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:12:37,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:12:37,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:12:37,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:12:37,512 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:12:37,513 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:12:37,514 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:12:38,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:12:38,731 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:12:38,731 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:12:38,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfbba87ab/85eb7b2281114f9c8708acd53aec29ac/FLAG75f7e96c5 [2023-08-04 06:12:38,755 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bfbba87ab/85eb7b2281114f9c8708acd53aec29ac [2023-08-04 06:12:38,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:12:38,758 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:12:38,759 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:12:38,760 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:12:38,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:12:38,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:12:38" (1/1) ... [2023-08-04 06:12:38,764 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4f3d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:38, skipping insertion in model container [2023-08-04 06:12:38,764 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:12:38" (1/1) ... [2023-08-04 06:12:38,807 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:12:38,963 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_mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i[983,996] [2023-08-04 06:12:39,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:12:39,149 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:12:39,159 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_mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i[983,996] [2023-08-04 06:12:39,178 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:12:39,179 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:12:39,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:12:39,233 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:12:39,234 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:12:39,238 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:12:39,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39 WrapperNode [2023-08-04 06:12:39,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:12:39,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:12:39,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:12:39,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:12:39,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,294 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 199 [2023-08-04 06:12:39,294 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:12:39,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:12:39,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:12:39,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:12:39,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,304 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,304 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,312 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,319 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:12:39,320 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:12:39,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:12:39,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:12:39,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (1/1) ... [2023-08-04 06:12:39,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:12:39,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:39,359 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 06:12:39,360 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 06:12:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:12:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:12:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:12:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:12:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:12:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:12:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:12:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:12:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:12:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:12:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:12:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 06:12:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 06:12:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:12:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:12:39,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:12:39,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:12:39,387 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 06:12:39,516 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:12:39,518 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:12:39,812 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:12:39,906 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:12:39,907 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 06:12:39,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:12:39 BoogieIcfgContainer [2023-08-04 06:12:39,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:12:39,910 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:12:39,910 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:12:39,912 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:12:39,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:12:38" (1/3) ... [2023-08-04 06:12:39,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d78621a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:12:39, skipping insertion in model container [2023-08-04 06:12:39,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:12:39" (2/3) ... [2023-08-04 06:12:39,912 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d78621a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:12:39, skipping insertion in model container [2023-08-04 06:12:39,912 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:12:39" (3/3) ... [2023-08-04 06:12:39,913 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix047_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:12:39,918 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:12:39,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:12:39,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 06:12:39,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:12:39,955 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:12:39,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 157 transitions, 334 flow [2023-08-04 06:12:40,149 INFO L124 PetriNetUnfolderBase]: 62/944 cut-off events. [2023-08-04 06:12:40,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:40,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 944 events. 62/944 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5915 event pairs, 0 based on Foata normal form. 0/828 useless extension candidates. Maximal degree in co-relation 549. Up to 32 conditions per place. [2023-08-04 06:12:40,156 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 157 transitions, 334 flow [2023-08-04 06:12:40,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 154 transitions, 322 flow [2023-08-04 06:12:40,164 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:12:40,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 154 transitions, 322 flow [2023-08-04 06:12:40,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 154 transitions, 322 flow [2023-08-04 06:12:40,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 154 transitions, 322 flow [2023-08-04 06:12:40,257 INFO L124 PetriNetUnfolderBase]: 62/937 cut-off events. [2023-08-04 06:12:40,257 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:40,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980 conditions, 937 events. 62/937 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5840 event pairs, 0 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 535. Up to 32 conditions per place. [2023-08-04 06:12:40,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 4034 [2023-08-04 06:12:44,269 INFO L134 LiptonReduction]: Checked pairs total: 9635 [2023-08-04 06:12:44,269 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-04 06:12:44,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:12:44,285 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;@1cf544, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:12:44,285 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:12:44,289 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:12:44,289 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2023-08-04 06:12:44,289 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:44,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:44,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:44,290 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:44,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:44,293 INFO L85 PathProgramCache]: Analyzing trace with hash -952005082, now seen corresponding path program 1 times [2023-08-04 06:12:44,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:44,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023512655] [2023-08-04 06:12:44,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:44,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:44,520 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 06:12:44,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:44,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023512655] [2023-08-04 06:12:44,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023512655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:44,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:12:44,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:12:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195296446] [2023-08-04 06:12:44,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:44,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:44,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:44,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:44,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:12:44,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 290 [2023-08-04 06:12:44,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 06:12:44,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:44,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 290 [2023-08-04 06:12:44,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:45,510 INFO L124 PetriNetUnfolderBase]: 7194/10761 cut-off events. [2023-08-04 06:12:45,510 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-04 06:12:45,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21253 conditions, 10761 events. 7194/10761 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 66497 event pairs, 5136 based on Foata normal form. 0/9309 useless extension candidates. Maximal degree in co-relation 21239. Up to 10282 conditions per place. [2023-08-04 06:12:45,556 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 32 selfloop transitions, 2 changer transitions 1/40 dead transitions. [2023-08-04 06:12:45,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 40 transitions, 164 flow [2023-08-04 06:12:45,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:45,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-08-04 06:12:45,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103448275862069 [2023-08-04 06:12:45,572 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-08-04 06:12:45,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-08-04 06:12:45,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:45,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-08-04 06:12:45,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 06:12:45,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 06:12:45,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 06:12:45,585 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 88 flow. Second operand 3 states and 444 transitions. [2023-08-04 06:12:45,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 40 transitions, 164 flow [2023-08-04 06:12:45,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:12:45,588 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 96 flow [2023-08-04 06:12:45,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 06:12:45,593 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 3 predicate places. [2023-08-04 06:12:45,593 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 96 flow [2023-08-04 06:12:45,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 06:12:45,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:45,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:45,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:12:45,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:45,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:45,594 INFO L85 PathProgramCache]: Analyzing trace with hash 916806739, now seen corresponding path program 1 times [2023-08-04 06:12:45,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:45,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191887152] [2023-08-04 06:12:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:45,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:45,671 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 06:12:45,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191887152] [2023-08-04 06:12:45,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191887152] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:45,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347165987] [2023-08-04 06:12:45,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:45,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:45,674 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 06:12:45,675 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 06:12:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:45,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:12:45,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:45,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:12:45,785 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:12:45,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347165987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:45,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:12:45,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:12:45,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850862604] [2023-08-04 06:12:45,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:45,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:45,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:45,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:45,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:45,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 290 [2023-08-04 06:12:45,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:45,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:45,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 290 [2023-08-04 06:12:45,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:46,527 INFO L124 PetriNetUnfolderBase]: 5786/8464 cut-off events. [2023-08-04 06:12:46,527 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-04 06:12:46,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16750 conditions, 8464 events. 5786/8464 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 48859 event pairs, 5005 based on Foata normal form. 0/7384 useless extension candidates. Maximal degree in co-relation 16733. Up to 8092 conditions per place. [2023-08-04 06:12:46,580 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 34 selfloop transitions, 2 changer transitions 1/42 dead transitions. [2023-08-04 06:12:46,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 180 flow [2023-08-04 06:12:46,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:46,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:46,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 06:12:46,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5126436781609195 [2023-08-04 06:12:46,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 06:12:46,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 06:12:46,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:46,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 06:12:46,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 06:12:46,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 06:12:46,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 06:12:46,586 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 96 flow. Second operand 3 states and 446 transitions. [2023-08-04 06:12:46,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 180 flow [2023-08-04 06:12:46,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 42 transitions, 176 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:12:46,587 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 100 flow [2023-08-04 06:12:46,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 06:12:46,588 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-04 06:12:46,588 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 100 flow [2023-08-04 06:12:46,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:12:46,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:46,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:46,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 06:12:46,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:46,796 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:46,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash -142210746, now seen corresponding path program 1 times [2023-08-04 06:12:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546154872] [2023-08-04 06:12:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:12:46,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:46,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546154872] [2023-08-04 06:12:46,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546154872] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:46,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213551600] [2023-08-04 06:12:46,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:46,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:46,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:46,894 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 06:12:46,895 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 06:12:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:46,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:12:46,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:46,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:12:46,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:12:46,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213551600] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:46,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:12:46,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:12:46,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725541858] [2023-08-04 06:12:46,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:46,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:46,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:46,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:46,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:47,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 290 [2023-08-04 06:12:47,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 06:12:47,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:47,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 290 [2023-08-04 06:12:47,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:47,522 INFO L124 PetriNetUnfolderBase]: 4940/7141 cut-off events. [2023-08-04 06:12:47,523 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-04 06:12:47,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14158 conditions, 7141 events. 4940/7141 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 40087 event pairs, 3518 based on Foata normal form. 0/6345 useless extension candidates. Maximal degree in co-relation 14141. Up to 6713 conditions per place. [2023-08-04 06:12:47,562 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 37 selfloop transitions, 2 changer transitions 1/45 dead transitions. [2023-08-04 06:12:47,562 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 196 flow [2023-08-04 06:12:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:12:47,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:12:47,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-04 06:12:47,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160919540229885 [2023-08-04 06:12:47,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-04 06:12:47,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-04 06:12:47,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:47,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-04 06:12:47,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 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 06:12:47,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 06:12:47,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 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 06:12:47,567 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 100 flow. Second operand 3 states and 449 transitions. [2023-08-04 06:12:47,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 196 flow [2023-08-04 06:12:47,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 45 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:12:47,569 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 104 flow [2023-08-04 06:12:47,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 06:12:47,570 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 5 predicate places. [2023-08-04 06:12:47,570 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 104 flow [2023-08-04 06:12:47,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 06:12:47,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:47,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:47,576 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 06:12:47,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 06:12:47,776 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:12:47,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:47,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1455368460, now seen corresponding path program 1 times [2023-08-04 06:12:47,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:47,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115380271] [2023-08-04 06:12:47,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:47,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:47,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:12:47,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115380271] [2023-08-04 06:12:47,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115380271] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:12:47,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185023640] [2023-08-04 06:12:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:47,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:47,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:12:47,845 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 06:12:47,848 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 06:12:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:47,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:12:47,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:12:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:12:47,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:12:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:12:47,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185023640] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:12:47,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:12:47,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:12:47,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427980946] [2023-08-04 06:12:47,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:12:47,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:12:47,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:47,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:12:47,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:12:47,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 290 [2023-08-04 06:12:47,995 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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 06:12:47,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:47,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 290 [2023-08-04 06:12:47,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:12:48,018 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:12:48,019 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 06:12:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 06:12:48,020 INFO L140 encePairwiseOnDemand]: 287/290 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:12:48,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 10 transitions, 43 flow [2023-08-04 06:12:48,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:12:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:12:48,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-08-04 06:12:48,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47413793103448276 [2023-08-04 06:12:48,021 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-08-04 06:12:48,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-08-04 06:12:48,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:12:48,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-08-04 06:12:48,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 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 06:12:48,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 06:12:48,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 290.0) internal successors, (1450), 5 states have internal predecessors, (1450), 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 06:12:48,025 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 104 flow. Second operand 4 states and 550 transitions. [2023-08-04 06:12:48,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 10 transitions, 43 flow [2023-08-04 06:12:48,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:12:48,025 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2023-08-04 06:12:48,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=290, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2023-08-04 06:12:48,026 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -27 predicate places. [2023-08-04 06:12:48,026 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2023-08-04 06:12:48,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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 06:12:48,028 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 06:12:48,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 06:12:48,029 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 06:12:48,037 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 06:12:48,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:12:48,235 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:12:48,236 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 06:12:48,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 157 transitions, 334 flow [2023-08-04 06:12:48,299 INFO L124 PetriNetUnfolderBase]: 62/944 cut-off events. [2023-08-04 06:12:48,299 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:48,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 944 events. 62/944 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5915 event pairs, 0 based on Foata normal form. 0/828 useless extension candidates. Maximal degree in co-relation 549. Up to 32 conditions per place. [2023-08-04 06:12:48,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 157 transitions, 334 flow [2023-08-04 06:12:48,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 126 transitions, 272 flow [2023-08-04 06:12:48,301 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:12:48,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 126 transitions, 272 flow [2023-08-04 06:12:48,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 126 transitions, 272 flow [2023-08-04 06:12:48,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 126 transitions, 272 flow [2023-08-04 06:12:48,323 INFO L124 PetriNetUnfolderBase]: 14/448 cut-off events. [2023-08-04 06:12:48,324 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:48,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 448 events. 14/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2104 event pairs, 0 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-08-04 06:12:48,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 2310 [2023-08-04 06:12:50,878 INFO L134 LiptonReduction]: Checked pairs total: 5658 [2023-08-04 06:12:50,878 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-04 06:12:50,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:12:50,880 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;@1cf544, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:12:50,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:12:50,882 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:12:50,882 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 06:12:50,882 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:12:50,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:50,883 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:12:50,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 06:12:50,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:50,883 INFO L85 PathProgramCache]: Analyzing trace with hash 676095023, now seen corresponding path program 1 times [2023-08-04 06:12:50,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:50,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163490114] [2023-08-04 06:12:50,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:50,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:12:50,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:12:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:12:50,915 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:12:50,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:12:50,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 06:12:50,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 06:12:50,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 06:12:50,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 06:12:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:12:50,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:12:50,916 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:12:50,917 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:12:50,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:12:50,935 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:12:50,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 190 transitions, 428 flow [2023-08-04 06:12:51,303 INFO L124 PetriNetUnfolderBase]: 282/4422 cut-off events. [2023-08-04 06:12:51,303 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 06:12:51,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4711 conditions, 4422 events. 282/4422 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43482 event pairs, 0 based on Foata normal form. 0/3885 useless extension candidates. Maximal degree in co-relation 3163. Up to 162 conditions per place. [2023-08-04 06:12:51,317 INFO L82 GeneralOperation]: Start removeDead. Operand has 201 places, 190 transitions, 428 flow [2023-08-04 06:12:51,324 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 187 transitions, 410 flow [2023-08-04 06:12:51,324 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:12:51,324 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 187 transitions, 410 flow [2023-08-04 06:12:51,324 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 187 transitions, 410 flow [2023-08-04 06:12:51,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 187 transitions, 410 flow [2023-08-04 06:12:51,733 INFO L124 PetriNetUnfolderBase]: 282/4409 cut-off events. [2023-08-04 06:12:51,733 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-04 06:12:51,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4672 conditions, 4409 events. 282/4409 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43282 event pairs, 0 based on Foata normal form. 0/3872 useless extension candidates. Maximal degree in co-relation 3142. Up to 162 conditions per place. [2023-08-04 06:12:51,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 9956 [2023-08-04 06:12:55,870 INFO L134 LiptonReduction]: Checked pairs total: 30362 [2023-08-04 06:12:55,870 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-04 06:12:55,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:12:55,872 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;@1cf544, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:12:55,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 06:12:55,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:12:55,875 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-08-04 06:12:55,875 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 06:12:55,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:12:55,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:12:55,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P3Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 06:12:55,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:12:55,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1483271795, now seen corresponding path program 1 times [2023-08-04 06:12:55,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:12:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422338909] [2023-08-04 06:12:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:12:55,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:12:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:12:55,904 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 06:12:55,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:12:55,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422338909] [2023-08-04 06:12:55,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422338909] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:12:55,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:12:55,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:12:55,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273167748] [2023-08-04 06:12:55,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:12:55,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:12:55,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:12:55,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:12:55,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:12:55,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 331 [2023-08-04 06:12:55,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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 06:12:55,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:12:55,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 331 [2023-08-04 06:12:55,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand