/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_mix033_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:33:38,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:33:38,082 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:33:38,085 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:33:38,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:33:38,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:33:38,086 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:33:38,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:33:38,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:33:38,105 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:33:38,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:33:38,105 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:33:38,106 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:33:38,106 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:33:38,107 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:33:38,107 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:33:38,107 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:33:38,108 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:33:38,108 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:33:38,108 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:33:38,109 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:33:38,109 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:33:38,110 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:33:38,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:33:38,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:33:38,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:33:38,111 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:33:38,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:33:38,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:33:38,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:33:38,112 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:33:38,112 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:33:38,113 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:33:38,113 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:33:38,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:33:38,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:33:38,114 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:33:38,114 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:33:38,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:33:38,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:33:38,115 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:33:38,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:33:38,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:33:38,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:33:38,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:33:38,384 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:33:38,385 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:33:38,386 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix033_tso.oepc_bound2.i [2023-08-03 23:33:39,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:33:39,810 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:33:39,811 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix033_tso.oepc_bound2.i [2023-08-03 23:33:39,825 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c401626d5/8c56c4217e38454f9442787b990082d6/FLAG6baeeadc4 [2023-08-03 23:33:39,844 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c401626d5/8c56c4217e38454f9442787b990082d6 [2023-08-03 23:33:39,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:33:39,852 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:33:39,854 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:33:39,855 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:33:39,857 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:33:39,858 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:33:39" (1/1) ... [2023-08-03 23:33:39,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cbe351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:39, skipping insertion in model container [2023-08-03 23:33:39,859 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:33:39" (1/1) ... [2023-08-03 23:33:39,918 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:33:40,096 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_mix033_tso.oepc_bound2.i[949,962] [2023-08-03 23:33:40,321 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:33:40,334 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:33:40,346 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_mix033_tso.oepc_bound2.i[949,962] [2023-08-03 23:33:40,365 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:33:40,367 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:33:40,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:33:40,459 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:33:40,459 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:33:40,466 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:33:40,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40 WrapperNode [2023-08-03 23:33:40,469 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:33:40,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:33:40,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:33:40,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:33:40,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,517 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,546 INFO L138 Inliner]: procedures = 176, calls = 62, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 179 [2023-08-03 23:33:40,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:33:40,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:33:40,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:33:40,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:33:40,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,598 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,599 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:33:40,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:33:40,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:33:40,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:33:40,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (1/1) ... [2023-08-03 23:33:40,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:33:40,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:33:40,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 23:33:40,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 23:33:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:33:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:33:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:33:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:33:40,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:33:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:33:40,700 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:33:40,700 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:33:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:33:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:33:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:33:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:33:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:33:40,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:33:40,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:33:40,703 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 23:33:40,818 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:33:40,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:33:41,129 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:33:41,274 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:33:41,275 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 23:33:41,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:33:41 BoogieIcfgContainer [2023-08-03 23:33:41,277 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:33:41,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:33:41,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:33:41,282 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:33:41,283 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:33:39" (1/3) ... [2023-08-03 23:33:41,284 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68aa670d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:33:41, skipping insertion in model container [2023-08-03 23:33:41,284 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:33:40" (2/3) ... [2023-08-03 23:33:41,285 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68aa670d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:33:41, skipping insertion in model container [2023-08-03 23:33:41,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:33:41" (3/3) ... [2023-08-03 23:33:41,286 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix033_tso.oepc_bound2.i [2023-08-03 23:33:41,294 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:33:41,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:33:41,302 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:33:41,302 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:33:41,360 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:33:41,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 137 transitions, 289 flow [2023-08-03 23:33:41,561 INFO L124 PetriNetUnfolderBase]: 30/465 cut-off events. [2023-08-03 23:33:41,561 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:33:41,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 465 events. 30/465 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2096 event pairs, 0 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 278. Up to 16 conditions per place. [2023-08-03 23:33:41,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 137 transitions, 289 flow [2023-08-03 23:33:41,576 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 108 transitions, 231 flow [2023-08-03 23:33:41,579 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:33:41,592 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 108 transitions, 231 flow [2023-08-03 23:33:41,597 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 108 transitions, 231 flow [2023-08-03 23:33:41,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 231 flow [2023-08-03 23:33:41,635 INFO L124 PetriNetUnfolderBase]: 6/233 cut-off events. [2023-08-03 23:33:41,635 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:33:41,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 233 events. 6/233 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 706 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 162. Up to 8 conditions per place. [2023-08-03 23:33:41,640 INFO L119 LiptonReduction]: Number of co-enabled transitions 1686 [2023-08-03 23:33:45,046 INFO L134 LiptonReduction]: Checked pairs total: 4042 [2023-08-03 23:33:45,047 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-03 23:33:45,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:33:45,064 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;@210ac260, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:33:45,065 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:33:45,069 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:33:45,069 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:33:45,069 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:33:45,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:33:45,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:33:45,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:33:45,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:33:45,074 INFO L85 PathProgramCache]: Analyzing trace with hash -638020715, now seen corresponding path program 1 times [2023-08-03 23:33:45,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:33:45,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779663290] [2023-08-03 23:33:45,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:33:45,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:33:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:33:45,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:33:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:33:45,228 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:33:45,230 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:33:45,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:33:45,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:33:45,233 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:33:45,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:33:45,234 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:33:45,238 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:33:45,239 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:33:45,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:33:45,271 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:33:45,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 166 transitions, 368 flow [2023-08-03 23:33:45,451 INFO L124 PetriNetUnfolderBase]: 93/1433 cut-off events. [2023-08-03 23:33:45,451 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:33:45,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 1433 events. 93/1433 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10026 event pairs, 0 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 1038. Up to 54 conditions per place. [2023-08-03 23:33:45,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 166 transitions, 368 flow [2023-08-03 23:33:45,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 137 transitions, 310 flow [2023-08-03 23:33:45,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:33:45,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 137 transitions, 310 flow [2023-08-03 23:33:45,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 137 transitions, 310 flow [2023-08-03 23:33:45,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 310 flow [2023-08-03 23:33:45,542 INFO L124 PetriNetUnfolderBase]: 12/650 cut-off events. [2023-08-03 23:33:45,542 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:33:45,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 650 events. 12/650 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3443 event pairs, 0 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 516. Up to 27 conditions per place. [2023-08-03 23:33:45,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 4872 [2023-08-03 23:33:48,748 INFO L134 LiptonReduction]: Checked pairs total: 21534 [2023-08-03 23:33:48,748 INFO L136 LiptonReduction]: Total number of compositions: 90 [2023-08-03 23:33:48,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:33:48,753 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;@210ac260, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:33:48,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:33:48,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:33:48,760 INFO L124 PetriNetUnfolderBase]: 0/71 cut-off events. [2023-08-03 23:33:48,761 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 23:33:48,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:33:48,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 23:33:48,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:33:48,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:33:48,761 INFO L85 PathProgramCache]: Analyzing trace with hash -357885158, now seen corresponding path program 1 times [2023-08-03 23:33:48,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:33:48,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163192262] [2023-08-03 23:33:48,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:33:48,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:33:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:33:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:33:48,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:33:48,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163192262] [2023-08-03 23:33:48,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163192262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:33:48,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:33:48,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:33:48,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950841412] [2023-08-03 23:33:48,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:33:48,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:33:48,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:33:48,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:33:48,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:33:48,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 256 [2023-08-03 23:33:48,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:33:48,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:33:48,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 256 [2023-08-03 23:33:48,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:34:02,110 INFO L124 PetriNetUnfolderBase]: 99287/139011 cut-off events. [2023-08-03 23:34:02,110 INFO L125 PetriNetUnfolderBase]: For 8636/8636 co-relation queries the response was YES. [2023-08-03 23:34:02,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275790 conditions, 139011 events. 99287/139011 cut-off events. For 8636/8636 co-relation queries the response was YES. Maximal size of possible extension queue 4771. Compared 1056731 event pairs, 78800 based on Foata normal form. 0/122802 useless extension candidates. Maximal degree in co-relation 64654. Up to 126604 conditions per place. [2023-08-03 23:34:03,271 INFO L140 encePairwiseOnDemand]: 253/256 looper letters, 37 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-03 23:34:03,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 59 transitions, 232 flow [2023-08-03 23:34:03,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:34:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:34:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-03 23:34:03,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5911458333333334 [2023-08-03 23:34:03,285 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-03 23:34:03,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-03 23:34:03,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:34:03,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-03 23:34:03,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:03,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:03,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:03,299 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 144 flow. Second operand 3 states and 454 transitions. [2023-08-03 23:34:03,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 59 transitions, 232 flow [2023-08-03 23:34:03,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 226 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 23:34:03,315 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 150 flow [2023-08-03 23:34:03,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2023-08-03 23:34:03,319 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-03 23:34:03,320 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 150 flow [2023-08-03 23:34:03,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:03,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:34:03,321 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:34:03,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 23:34:03,321 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:34:03,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:34:03,322 INFO L85 PathProgramCache]: Analyzing trace with hash 422063827, now seen corresponding path program 1 times [2023-08-03 23:34:03,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:34:03,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366669613] [2023-08-03 23:34:03,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:03,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:34:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:34:03,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:34:03,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366669613] [2023-08-03 23:34:03,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366669613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:34:03,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759825170] [2023-08-03 23:34:03,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:03,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:34:03,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:34:03,397 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) [2023-08-03 23:34:03,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 23:34:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:03,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:34:03,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:34:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:34:03,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:34:03,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759825170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:34:03,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:34:03,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:34:03,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856905533] [2023-08-03 23:34:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:34:03,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:34:03,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:34:03,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:34:03,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:34:03,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 256 [2023-08-03 23:34:03,574 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:03,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:34:03,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 256 [2023-08-03 23:34:03,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:34:14,884 INFO L124 PetriNetUnfolderBase]: 99263/139239 cut-off events. [2023-08-03 23:34:14,885 INFO L125 PetriNetUnfolderBase]: For 7984/7984 co-relation queries the response was YES. [2023-08-03 23:34:15,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275517 conditions, 139239 events. 99263/139239 cut-off events. For 7984/7984 co-relation queries the response was YES. Maximal size of possible extension queue 4776. Compared 1060031 event pairs, 62420 based on Foata normal form. 16/123134 useless extension candidates. Maximal degree in co-relation 72282. Up to 126521 conditions per place. [2023-08-03 23:34:15,678 INFO L140 encePairwiseOnDemand]: 252/256 looper letters, 42 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-03 23:34:15,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 262 flow [2023-08-03 23:34:15,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:34:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:34:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2023-08-03 23:34:15,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.571875 [2023-08-03 23:34:15,684 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2023-08-03 23:34:15,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2023-08-03 23:34:15,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:34:15,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2023-08-03 23:34:15,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:15,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:15,692 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:15,692 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 150 flow. Second operand 5 states and 732 transitions. [2023-08-03 23:34:15,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 262 flow [2023-08-03 23:34:15,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 23:34:15,695 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 164 flow [2023-08-03 23:34:15,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=164, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-03 23:34:15,696 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 6 predicate places. [2023-08-03 23:34:15,696 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 164 flow [2023-08-03 23:34:15,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.6) internal successors, (693), 5 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:15,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:34:15,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:34:15,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 23:34:15,902 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 [2023-08-03 23:34:15,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:34:15,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:34:15,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1328953473, now seen corresponding path program 1 times [2023-08-03 23:34:15,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:34:15,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206386660] [2023-08-03 23:34:15,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:15,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:34:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:15,956 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:34:15,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:34:15,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206386660] [2023-08-03 23:34:15,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206386660] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:34:15,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634922715] [2023-08-03 23:34:15,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:15,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:34:15,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:34:15,959 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) [2023-08-03 23:34:15,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 23:34:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:16,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 23:34:16,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:34:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:34:16,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:34:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634922715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:34:16,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:34:16,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 23:34:16,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857222181] [2023-08-03 23:34:16,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:34:16,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:34:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:34:16,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:34:16,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:34:16,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 256 [2023-08-03 23:34:16,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 164 flow. Second operand has 3 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) [2023-08-03 23:34:16,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:34:16,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 256 [2023-08-03 23:34:16,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:34:27,565 INFO L124 PetriNetUnfolderBase]: 97376/140557 cut-off events. [2023-08-03 23:34:27,566 INFO L125 PetriNetUnfolderBase]: For 7483/7483 co-relation queries the response was YES. [2023-08-03 23:34:27,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274891 conditions, 140557 events. 97376/140557 cut-off events. For 7483/7483 co-relation queries the response was YES. Maximal size of possible extension queue 5114. Compared 1136257 event pairs, 76147 based on Foata normal form. 0/125841 useless extension candidates. Maximal degree in co-relation 107813. Up to 123534 conditions per place. [2023-08-03 23:34:28,459 INFO L140 encePairwiseOnDemand]: 253/256 looper letters, 45 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-03 23:34:28,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 284 flow [2023-08-03 23:34:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:34:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:34:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-03 23:34:28,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6002604166666666 [2023-08-03 23:34:28,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-03 23:34:28,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-03 23:34:28,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:34:28,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-03 23:34:28,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:28,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:28,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:28,467 INFO L175 Difference]: Start difference. First operand has 73 places, 55 transitions, 164 flow. Second operand 3 states and 461 transitions. [2023-08-03 23:34:28,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 284 flow [2023-08-03 23:34:28,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 67 transitions, 277 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 23:34:28,472 INFO L231 Difference]: Finished difference. Result has 74 places, 56 transitions, 172 flow [2023-08-03 23:34:28,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=74, PETRI_TRANSITIONS=56} [2023-08-03 23:34:28,473 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-08-03 23:34:28,473 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 56 transitions, 172 flow [2023-08-03 23:34:28,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-03 23:34:28,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:34:28,473 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:34:28,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 23:34:28,680 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 [2023-08-03 23:34:28,681 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:34:28,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:34:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1237530841, now seen corresponding path program 1 times [2023-08-03 23:34:28,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:34:28,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744008993] [2023-08-03 23:34:28,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:28,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:34:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:28,742 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:34:28,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:34:28,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744008993] [2023-08-03 23:34:28,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744008993] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:34:28,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551620020] [2023-08-03 23:34:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:28,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:34:28,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:34:28,753 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) [2023-08-03 23:34:28,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 23:34:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:28,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:34:28,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:34:28,849 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:34:28,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:34:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:34:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551620020] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:34:28,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:34:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:34:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525074596] [2023-08-03 23:34:28,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:34:28,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:34:28,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:34:28,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:34:28,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:34:28,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 256 [2023-08-03 23:34:28,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 56 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:28,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:34:28,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 256 [2023-08-03 23:34:28,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:34:38,054 INFO L124 PetriNetUnfolderBase]: 81082/115378 cut-off events. [2023-08-03 23:34:38,055 INFO L125 PetriNetUnfolderBase]: For 7064/7064 co-relation queries the response was YES. [2023-08-03 23:34:38,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227074 conditions, 115378 events. 81082/115378 cut-off events. For 7064/7064 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 886495 event pairs, 49312 based on Foata normal form. 4/103941 useless extension candidates. Maximal degree in co-relation 59395. Up to 102233 conditions per place. [2023-08-03 23:34:38,964 INFO L140 encePairwiseOnDemand]: 253/256 looper letters, 43 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-03 23:34:38,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 65 transitions, 277 flow [2023-08-03 23:34:38,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:34:38,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:34:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 594 transitions. [2023-08-03 23:34:38,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580078125 [2023-08-03 23:34:38,969 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 594 transitions. [2023-08-03 23:34:38,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 594 transitions. [2023-08-03 23:34:38,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:34:38,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 594 transitions. [2023-08-03 23:34:38,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.5) internal successors, (594), 4 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:38,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:38,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:38,973 INFO L175 Difference]: Start difference. First operand has 74 places, 56 transitions, 172 flow. Second operand 4 states and 594 transitions. [2023-08-03 23:34:38,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 65 transitions, 277 flow [2023-08-03 23:34:38,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 65 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:34:38,977 INFO L231 Difference]: Finished difference. Result has 76 places, 55 transitions, 167 flow [2023-08-03 23:34:38,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=76, PETRI_TRANSITIONS=55} [2023-08-03 23:34:38,977 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-03 23:34:38,978 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 55 transitions, 167 flow [2023-08-03 23:34:38,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:38,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:34:38,978 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:34:38,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 23:34:39,183 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 [2023-08-03 23:34:39,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:34:39,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:34:39,184 INFO L85 PathProgramCache]: Analyzing trace with hash -2051160851, now seen corresponding path program 1 times [2023-08-03 23:34:39,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:34:39,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895896313] [2023-08-03 23:34:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:39,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:34:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:39,267 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:34:39,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:34:39,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895896313] [2023-08-03 23:34:39,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895896313] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:34:39,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900242262] [2023-08-03 23:34:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:39,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:34:39,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:34:39,282 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) [2023-08-03 23:34:39,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 23:34:39,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:39,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:34:39,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:34:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:34:39,405 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:34:39,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900242262] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:34:39,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:34:39,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 23:34:39,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630786510] [2023-08-03 23:34:39,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:34:39,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:34:39,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:34:39,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:34:39,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:34:39,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 256 [2023-08-03 23:34:39,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:39,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:34:39,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 256 [2023-08-03 23:34:39,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:34:48,334 INFO L124 PetriNetUnfolderBase]: 79842/115919 cut-off events. [2023-08-03 23:34:48,334 INFO L125 PetriNetUnfolderBase]: For 5567/5567 co-relation queries the response was YES. [2023-08-03 23:34:48,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226092 conditions, 115919 events. 79842/115919 cut-off events. For 5567/5567 co-relation queries the response was YES. Maximal size of possible extension queue 4457. Compared 929805 event pairs, 18762 based on Foata normal form. 400/106238 useless extension candidates. Maximal degree in co-relation 107801. Up to 98424 conditions per place. [2023-08-03 23:34:49,026 INFO L140 encePairwiseOnDemand]: 252/256 looper letters, 64 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-03 23:34:49,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 86 transitions, 365 flow [2023-08-03 23:34:49,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:34:49,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:34:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2023-08-03 23:34:49,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58828125 [2023-08-03 23:34:49,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2023-08-03 23:34:49,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2023-08-03 23:34:49,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:34:49,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2023-08-03 23:34:49,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:49,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:49,033 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:49,034 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 167 flow. Second operand 5 states and 753 transitions. [2023-08-03 23:34:49,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 86 transitions, 365 flow [2023-08-03 23:34:49,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:34:49,038 INFO L231 Difference]: Finished difference. Result has 77 places, 55 transitions, 177 flow [2023-08-03 23:34:49,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=177, PETRI_PLACES=77, PETRI_TRANSITIONS=55} [2023-08-03 23:34:49,039 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 10 predicate places. [2023-08-03 23:34:49,039 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 55 transitions, 177 flow [2023-08-03 23:34:49,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:49,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:34:49,040 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:34:49,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 23:34:49,244 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 [2023-08-03 23:34:49,245 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:34:49,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:34:49,245 INFO L85 PathProgramCache]: Analyzing trace with hash 600128981, now seen corresponding path program 1 times [2023-08-03 23:34:49,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:34:49,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108103943] [2023-08-03 23:34:49,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:49,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:34:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:49,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:34:49,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:34:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108103943] [2023-08-03 23:34:49,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108103943] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:34:49,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410285836] [2023-08-03 23:34:49,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:49,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:34:49,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:34:49,316 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) [2023-08-03 23:34:49,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 23:34:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:49,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:34:49,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:34:49,432 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:34:49,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:34:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:34:49,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410285836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:34:49,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:34:49,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 23:34:49,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852445294] [2023-08-03 23:34:49,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:34:49,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:34:49,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:34:49,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:34:49,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:34:49,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 256 [2023-08-03 23:34:49,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 55 transitions, 177 flow. Second operand has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:49,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:34:49,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 256 [2023-08-03 23:34:49,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:34:57,547 INFO L124 PetriNetUnfolderBase]: 69178/99431 cut-off events. [2023-08-03 23:34:57,548 INFO L125 PetriNetUnfolderBase]: For 7625/7625 co-relation queries the response was YES. [2023-08-03 23:34:57,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195592 conditions, 99431 events. 69178/99431 cut-off events. For 7625/7625 co-relation queries the response was YES. Maximal size of possible extension queue 3994. Compared 771685 event pairs, 41034 based on Foata normal form. 80/90474 useless extension candidates. Maximal degree in co-relation 93373. Up to 84569 conditions per place. [2023-08-03 23:34:58,352 INFO L140 encePairwiseOnDemand]: 253/256 looper letters, 58 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-03 23:34:58,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 343 flow [2023-08-03 23:34:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:34:58,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:34:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 609 transitions. [2023-08-03 23:34:58,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947265625 [2023-08-03 23:34:58,355 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 609 transitions. [2023-08-03 23:34:58,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 609 transitions. [2023-08-03 23:34:58,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:34:58,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 609 transitions. [2023-08-03 23:34:58,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:58,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:58,359 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:58,359 INFO L175 Difference]: Start difference. First operand has 77 places, 55 transitions, 177 flow. Second operand 4 states and 609 transitions. [2023-08-03 23:34:58,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 343 flow [2023-08-03 23:34:58,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 79 transitions, 338 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 23:34:58,363 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 170 flow [2023-08-03 23:34:58,364 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2023-08-03 23:34:58,364 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2023-08-03 23:34:58,364 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 170 flow [2023-08-03 23:34:58,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:58,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:34:58,365 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:34:58,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 23:34:58,571 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 [2023-08-03 23:34:58,571 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:34:58,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:34:58,572 INFO L85 PathProgramCache]: Analyzing trace with hash 93685668, now seen corresponding path program 1 times [2023-08-03 23:34:58,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:34:58,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261821525] [2023-08-03 23:34:58,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:34:58,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:34:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:34:58,662 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:34:58,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:34:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261821525] [2023-08-03 23:34:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261821525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:34:58,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:34:58,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 23:34:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370654948] [2023-08-03 23:34:58,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:34:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 23:34:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:34:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 23:34:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 23:34:58,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 256 [2023-08-03 23:34:58,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:34:58,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:34:58,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 256 [2023-08-03 23:34:58,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:35:03,202 INFO L124 PetriNetUnfolderBase]: 39738/59479 cut-off events. [2023-08-03 23:35:03,203 INFO L125 PetriNetUnfolderBase]: For 5829/5829 co-relation queries the response was YES. [2023-08-03 23:35:03,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118680 conditions, 59479 events. 39738/59479 cut-off events. For 5829/5829 co-relation queries the response was YES. Maximal size of possible extension queue 2452. Compared 457630 event pairs, 2738 based on Foata normal form. 6400/60934 useless extension candidates. Maximal degree in co-relation 56517. Up to 38800 conditions per place. [2023-08-03 23:35:03,393 INFO L140 encePairwiseOnDemand]: 254/256 looper letters, 0 selfloop transitions, 0 changer transitions 84/84 dead transitions. [2023-08-03 23:35:03,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 84 transitions, 362 flow [2023-08-03 23:35:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:35:03,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:35:03,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 618 transitions. [2023-08-03 23:35:03,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.603515625 [2023-08-03 23:35:03,395 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 618 transitions. [2023-08-03 23:35:03,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 618 transitions. [2023-08-03 23:35:03,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:35:03,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 618 transitions. [2023-08-03 23:35:03,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:35:03,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:35:03,398 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:35:03,399 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 170 flow. Second operand 4 states and 618 transitions. [2023-08-03 23:35:03,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 84 transitions, 362 flow [2023-08-03 23:35:03,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 84 transitions, 355 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:35:03,856 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-08-03 23:35:03,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-08-03 23:35:03,857 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-03 23:35:03,857 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-08-03 23:35:03,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:35:03,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:35:03,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:35:03,858 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:35:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 23:35:03,858 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:35:03,859 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-03 23:35:03,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 166 transitions, 368 flow [2023-08-03 23:35:03,953 INFO L124 PetriNetUnfolderBase]: 93/1433 cut-off events. [2023-08-03 23:35:03,953 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:35:03,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 1433 events. 93/1433 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10026 event pairs, 0 based on Foata normal form. 0/1268 useless extension candidates. Maximal degree in co-relation 1038. Up to 54 conditions per place. [2023-08-03 23:35:03,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 166 transitions, 368 flow [2023-08-03 23:35:03,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 165 transitions, 362 flow [2023-08-03 23:35:03,961 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:35:03,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 165 transitions, 362 flow [2023-08-03 23:35:03,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 165 transitions, 362 flow [2023-08-03 23:35:03,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 165 transitions, 362 flow [2023-08-03 23:35:04,070 INFO L124 PetriNetUnfolderBase]: 93/1432 cut-off events. [2023-08-03 23:35:04,070 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-03 23:35:04,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 1432 events. 93/1432 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 10020 event pairs, 0 based on Foata normal form. 0/1267 useless extension candidates. Maximal degree in co-relation 1035. Up to 54 conditions per place. [2023-08-03 23:35:04,101 INFO L119 LiptonReduction]: Number of co-enabled transitions 7860 [2023-08-03 23:35:07,502 INFO L134 LiptonReduction]: Checked pairs total: 27701 [2023-08-03 23:35:07,502 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-03 23:35:07,503 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 23:35:07,504 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;@210ac260, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:35:07,504 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:35:07,506 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:35:07,506 INFO L124 PetriNetUnfolderBase]: 1/14 cut-off events. [2023-08-03 23:35:07,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:35:07,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:35:07,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 23:35:07,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:35:07,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:35:07,506 INFO L85 PathProgramCache]: Analyzing trace with hash 919194683, now seen corresponding path program 1 times [2023-08-03 23:35:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:35:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977962953] [2023-08-03 23:35:07,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:35:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:35:07,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:35:07,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:35:07,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:35:07,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977962953] [2023-08-03 23:35:07,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977962953] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:35:07,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:35:07,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:35:07,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557707005] [2023-08-03 23:35:07,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:35:07,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:35:07,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:35:07,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:35:07,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:35:07,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 285 [2023-08-03 23:35:07,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 154 flow. Second operand has 3 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) [2023-08-03 23:35:07,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:35:07,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 285 [2023-08-03 23:35:07,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:36:03,412 INFO L124 PetriNetUnfolderBase]: 468866/641930 cut-off events. [2023-08-03 23:36:03,412 INFO L125 PetriNetUnfolderBase]: For 8660/8660 co-relation queries the response was YES. [2023-08-03 23:36:04,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239540 conditions, 641930 events. 468866/641930 cut-off events. For 8660/8660 co-relation queries the response was YES. Maximal size of possible extension queue 19954. Compared 5275863 event pairs, 380024 based on Foata normal form. 13020/551509 useless extension candidates. Maximal degree in co-relation 266831. Up to 587323 conditions per place. [2023-08-03 23:36:07,090 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 44 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-03 23:36:07,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 254 flow [2023-08-03 23:36:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:36:07,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:36:07,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-03 23:36:07,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5403508771929825 [2023-08-03 23:36:07,092 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-03 23:36:07,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-03 23:36:07,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:36:07,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-03 23:36:07,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:07,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:07,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:07,094 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 154 flow. Second operand 3 states and 462 transitions. [2023-08-03 23:36:07,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 254 flow [2023-08-03 23:36:07,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 65 transitions, 250 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 23:36:07,101 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 160 flow [2023-08-03 23:36:07,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2023-08-03 23:36:07,102 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 3 predicate places. [2023-08-03 23:36:07,102 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 160 flow [2023-08-03 23:36:07,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-03 23:36:07,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:36:07,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:36:07,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 23:36:07,103 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:36:07,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:36:07,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1391382772, now seen corresponding path program 1 times [2023-08-03 23:36:07,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:36:07,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920059230] [2023-08-03 23:36:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:36:07,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:36:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:36:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:36:07,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:36:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920059230] [2023-08-03 23:36:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920059230] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:36:07,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059830635] [2023-08-03 23:36:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:36:07,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:36:07,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:36:07,152 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) [2023-08-03 23:36:07,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 23:36:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:36:07,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:36:07,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:36:07,247 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:36:07,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:36:07,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:36:07,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059830635] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:36:07,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:36:07,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:36:07,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002908721] [2023-08-03 23:36:07,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:36:07,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:36:07,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:36:07,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:36:07,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:36:07,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 285 [2023-08-03 23:36:07,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:07,274 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:36:07,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 285 [2023-08-03 23:36:07,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:36:55,626 INFO L124 PetriNetUnfolderBase]: 389314/528606 cut-off events. [2023-08-03 23:36:55,627 INFO L125 PetriNetUnfolderBase]: For 6392/6392 co-relation queries the response was YES. [2023-08-03 23:36:56,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020479 conditions, 528606 events. 389314/528606 cut-off events. For 6392/6392 co-relation queries the response was YES. Maximal size of possible extension queue 16703. Compared 4176680 event pairs, 247180 based on Foata normal form. 4/446081 useless extension candidates. Maximal degree in co-relation 266957. Up to 484009 conditions per place. [2023-08-03 23:36:58,819 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 49 selfloop transitions, 3 changer transitions 1/72 dead transitions. [2023-08-03 23:36:58,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 72 transitions, 288 flow [2023-08-03 23:36:58,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:36:58,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:36:58,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 602 transitions. [2023-08-03 23:36:58,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280701754385965 [2023-08-03 23:36:58,821 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 602 transitions. [2023-08-03 23:36:58,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 602 transitions. [2023-08-03 23:36:58,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:36:58,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 602 transitions. [2023-08-03 23:36:58,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:58,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:58,823 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:58,823 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 160 flow. Second operand 4 states and 602 transitions. [2023-08-03 23:36:58,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 72 transitions, 288 flow [2023-08-03 23:36:58,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:36:58,826 INFO L231 Difference]: Finished difference. Result has 80 places, 61 transitions, 172 flow [2023-08-03 23:36:58,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2023-08-03 23:36:58,827 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-03 23:36:58,827 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 172 flow [2023-08-03 23:36:58,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.4) internal successors, (697), 5 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:58,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:36:58,827 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:36:58,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 23:36:59,028 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 [2023-08-03 23:36:59,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:36:59,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:36:59,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1295973534, now seen corresponding path program 1 times [2023-08-03 23:36:59,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:36:59,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913996532] [2023-08-03 23:36:59,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:36:59,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:36:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:36:59,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:36:59,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:36:59,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913996532] [2023-08-03 23:36:59,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913996532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:36:59,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:36:59,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 23:36:59,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097550332] [2023-08-03 23:36:59,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:36:59,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:36:59,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:36:59,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:36:59,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:36:59,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 285 [2023-08-03 23:36:59,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:36:59,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:36:59,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 285 [2023-08-03 23:36:59,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:37:36,131 INFO L124 PetriNetUnfolderBase]: 335018/468695 cut-off events. [2023-08-03 23:37:36,131 INFO L125 PetriNetUnfolderBase]: For 5808/5808 co-relation queries the response was YES. [2023-08-03 23:37:37,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 892808 conditions, 468695 events. 335018/468695 cut-off events. For 5808/5808 co-relation queries the response was YES. Maximal size of possible extension queue 15116. Compared 3955955 event pairs, 55274 based on Foata normal form. 0/406470 useless extension candidates. Maximal degree in co-relation 425725. Up to 383649 conditions per place. [2023-08-03 23:37:38,962 INFO L140 encePairwiseOnDemand]: 280/285 looper letters, 67 selfloop transitions, 3 changer transitions 0/89 dead transitions. [2023-08-03 23:37:38,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 89 transitions, 381 flow [2023-08-03 23:37:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:37:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:37:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-03 23:37:38,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5777777777777777 [2023-08-03 23:37:38,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-03 23:37:38,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-03 23:37:38,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:37:38,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-03 23:37:38,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:37:38,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:37:38,966 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:37:38,966 INFO L175 Difference]: Start difference. First operand has 80 places, 61 transitions, 172 flow. Second operand 3 states and 494 transitions. [2023-08-03 23:37:38,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 89 transitions, 381 flow [2023-08-03 23:37:38,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 374 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 23:37:38,969 INFO L231 Difference]: Finished difference. Result has 80 places, 63 transitions, 186 flow [2023-08-03 23:37:38,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=80, PETRI_TRANSITIONS=63} [2023-08-03 23:37:38,969 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 7 predicate places. [2023-08-03 23:37:38,969 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 63 transitions, 186 flow [2023-08-03 23:37:38,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:37:38,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:37:38,970 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:37:38,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 23:37:38,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:37:38,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:37:38,970 INFO L85 PathProgramCache]: Analyzing trace with hash -92954334, now seen corresponding path program 1 times [2023-08-03 23:37:38,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:37:38,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106055978] [2023-08-03 23:37:38,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:37:38,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:37:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:37:39,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:37:39,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:37:39,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106055978] [2023-08-03 23:37:39,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106055978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:37:39,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:37:39,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 23:37:39,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717121320] [2023-08-03 23:37:39,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:37:39,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:37:39,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:37:39,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:37:39,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:37:39,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 285 [2023-08-03 23:37:39,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 63 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:37:39,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:37:39,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 285 [2023-08-03 23:37:39,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:38:18,991 INFO L124 PetriNetUnfolderBase]: 326858/442615 cut-off events. [2023-08-03 23:38:18,992 INFO L125 PetriNetUnfolderBase]: For 32537/32537 co-relation queries the response was YES. [2023-08-03 23:38:20,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911208 conditions, 442615 events. 326858/442615 cut-off events. For 32537/32537 co-relation queries the response was YES. Maximal size of possible extension queue 15347. Compared 3472018 event pairs, 311418 based on Foata normal form. 0/386682 useless extension candidates. Maximal degree in co-relation 435677. Up to 406153 conditions per place. [2023-08-03 23:38:21,849 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 53 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-03 23:38:21,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 74 transitions, 321 flow [2023-08-03 23:38:21,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:38:21,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:38:21,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-03 23:38:21,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5461988304093567 [2023-08-03 23:38:21,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-03 23:38:21,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-03 23:38:21,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:38:21,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-03 23:38:21,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:38:21,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:38:21,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:38:21,853 INFO L175 Difference]: Start difference. First operand has 80 places, 63 transitions, 186 flow. Second operand 3 states and 467 transitions. [2023-08-03 23:38:21,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 74 transitions, 321 flow [2023-08-03 23:38:21,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 74 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:38:21,858 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 195 flow [2023-08-03 23:38:21,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-08-03 23:38:21,858 INFO L281 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2023-08-03 23:38:21,859 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 195 flow [2023-08-03 23:38:21,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:38:21,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:38:21,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:38:21,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 23:38:21,859 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:38:21,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:38:21,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1387495817, now seen corresponding path program 1 times [2023-08-03 23:38:21,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:38:21,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242448331] [2023-08-03 23:38:21,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:38:21,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:38:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:38:21,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:38:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:38:21,895 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:38:21,896 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:38:21,896 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 23:38:21,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 23:38:21,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 23:38:21,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 23:38:21,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 23:38:21,896 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 23:38:21,897 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-03 23:38:21,900 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 23:38:21,900 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 23:38:21,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 11:38:21 BasicIcfg [2023-08-03 23:38:21,971 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 23:38:21,971 INFO L158 Benchmark]: Toolchain (without parser) took 282120.10ms. Allocated memory was 543.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 489.0MB in the beginning and 11.7GB in the end (delta: -11.2GB). Peak memory consumption was 4.2GB. Max. memory is 16.0GB. [2023-08-03 23:38:21,972 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 297.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 23:38:21,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 618.28ms. Allocated memory is still 543.2MB. Free memory was 488.6MB in the beginning and 464.8MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-03 23:38:21,972 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.63ms. Allocated memory is still 543.2MB. Free memory was 464.8MB in the beginning and 461.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:38:21,972 INFO L158 Benchmark]: Boogie Preprocessor took 71.04ms. Allocated memory is still 543.2MB. Free memory was 461.9MB in the beginning and 459.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:38:21,972 INFO L158 Benchmark]: RCFGBuilder took 657.60ms. Allocated memory is still 543.2MB. Free memory was 459.8MB in the beginning and 497.7MB in the end (delta: -37.9MB). Peak memory consumption was 38.8MB. Max. memory is 16.0GB. [2023-08-03 23:38:21,973 INFO L158 Benchmark]: TraceAbstraction took 280691.94ms. Allocated memory was 543.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 497.7MB in the beginning and 11.7GB in the end (delta: -11.2GB). Peak memory consumption was 4.2GB. Max. memory is 16.0GB. [2023-08-03 23:38:21,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 297.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 618.28ms. Allocated memory is still 543.2MB. Free memory was 488.6MB in the beginning and 464.8MB in the end (delta: 23.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 73.63ms. Allocated memory is still 543.2MB. Free memory was 464.8MB in the beginning and 461.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 71.04ms. Allocated memory is still 543.2MB. Free memory was 461.9MB in the beginning and 459.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 657.60ms. Allocated memory is still 543.2MB. Free memory was 459.8MB in the beginning and 497.7MB in the end (delta: -37.9MB). Peak memory consumption was 38.8MB. Max. memory is 16.0GB. * TraceAbstraction took 280691.94ms. Allocated memory was 543.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 497.7MB in the beginning and 11.7GB in the end (delta: -11.2GB). Peak memory consumption was 4.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 113 PlacesBefore, 34 PlacesAfterwards, 108 TransitionsBefore, 27 TransitionsAfterwards, 1686 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 4042 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2252, independent: 2114, independent conditional: 0, independent unconditional: 2114, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 882, independent: 863, independent conditional: 0, independent unconditional: 863, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2252, independent: 1251, independent conditional: 0, independent unconditional: 1251, dependent: 119, dependent conditional: 0, dependent unconditional: 119, unknown: 882, unknown conditional: 0, unknown unconditional: 882] , Statistics on independence cache: Total cache size (in pairs): 102, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 148 PlacesBefore, 67 PlacesAfterwards, 137 TransitionsBefore, 54 TransitionsAfterwards, 4872 CoEnabledTransitionPairs, 7 FixpointIterations, 40 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 90 TotalNumberOfCompositions, 21534 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9811, independent: 9396, independent conditional: 0, independent unconditional: 9396, dependent: 415, dependent conditional: 0, dependent unconditional: 415, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2392, independent: 2352, independent conditional: 0, independent unconditional: 2352, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9811, independent: 7044, independent conditional: 0, independent unconditional: 7044, dependent: 375, dependent conditional: 0, dependent unconditional: 375, unknown: 2392, unknown conditional: 0, unknown unconditional: 2392] , Statistics on independence cache: Total cache size (in pairs): 548, Positive cache size: 521, Positive conditional cache size: 0, Positive unconditional cache size: 521, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 173 PlacesBefore, 73 PlacesAfterwards, 165 TransitionsBefore, 61 TransitionsAfterwards, 7860 CoEnabledTransitionPairs, 6 FixpointIterations, 40 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 119 TotalNumberOfCompositions, 27701 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 12044, independent: 11641, independent conditional: 0, independent unconditional: 11641, dependent: 403, dependent conditional: 0, dependent unconditional: 403, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3931, independent: 3861, independent conditional: 0, independent unconditional: 3861, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 12044, independent: 7780, independent conditional: 0, independent unconditional: 7780, dependent: 333, dependent conditional: 0, dependent unconditional: 333, unknown: 3931, unknown conditional: 0, unknown unconditional: 3931] , Statistics on independence cache: Total cache size (in pairs): 602, Positive cache size: 563, Positive conditional cache size: 0, Positive unconditional cache size: 563, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p1_EBX = 0; [L715] 0 int __unbuffered_p2_EAX = 0; [L717] 0 int __unbuffered_p2_EBX = 0; [L719] 0 int a = 0; [L721] 0 int b = 0; [L722] 0 _Bool main$tmp_guard0; [L723] 0 _Bool main$tmp_guard1; [L725] 0 int x = 0; [L726] 0 _Bool x$flush_delayed; [L727] 0 int x$mem_tmp; [L728] 0 _Bool x$r_buff0_thd0; [L729] 0 _Bool x$r_buff0_thd1; [L730] 0 _Bool x$r_buff0_thd2; [L731] 0 _Bool x$r_buff0_thd3; [L732] 0 _Bool x$r_buff1_thd0; [L733] 0 _Bool x$r_buff1_thd1; [L734] 0 _Bool x$r_buff1_thd2; [L735] 0 _Bool x$r_buff1_thd3; [L736] 0 _Bool x$read_delayed; [L737] 0 int *x$read_delayed_var; [L738] 0 int x$w_buff0; [L739] 0 _Bool x$w_buff0_used; [L740] 0 int x$w_buff1; [L741] 0 _Bool x$w_buff1_used; [L743] 0 int y = 0; [L745] 0 int z = 0; [L746] 0 _Bool weak$$choice0; [L747] 0 _Bool weak$$choice2; [L840] 0 pthread_t t891[2]; [L841] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, asdf=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t891={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] [L841] COND TRUE 0 asdf<2 [L841] FCALL, FORK 0 pthread_create(&t891[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t891[asdf], ((void *)0), P0, ((void *)0))=-3, t891={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] [L841] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t891={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] [L841] COND TRUE 0 asdf<2 [L841] FCALL, FORK 0 pthread_create(&t891[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t891[asdf], ((void *)0), P0, ((void *)0))=-2, t891={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] [L841] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=2, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t891={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] [L841] COND FALSE 0 !(asdf<2) [L842] 0 pthread_t t892[2]; [L843] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, asdf=2, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t891={5:0}, t892={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] [L843] COND TRUE 0 asdf<2 [L843] FCALL, FORK 0 pthread_create(&t892[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=0, asdf=2, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t892[asdf], ((void *)0), P1, ((void *)0))=-1, t891={5:0}, t892={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] [L771] 3 x$w_buff1 = x$w_buff0 [L772] 3 x$w_buff0 = 2 [L773] 3 x$w_buff1_used = x$w_buff0_used [L774] 3 x$w_buff0_used = (_Bool)1 [L775] CALL 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L775] RET 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L776] 3 x$r_buff1_thd0 = x$r_buff0_thd0 [L777] 3 x$r_buff1_thd1 = x$r_buff0_thd1 [L778] 3 x$r_buff1_thd2 = x$r_buff0_thd2 [L779] 3 x$r_buff1_thd3 = x$r_buff0_thd3 [L780] 3 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, arg={0:0}, arg={0:0}, b=0, main$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$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L843] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, asdf=2, b=0, main$tmp_guard0=0, main$tmp_guard1=0, t891={5:0}, t892={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$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L843] COND TRUE 0 asdf<2 [L843] FCALL, FORK 0 pthread_create(&t892[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, asdf=1, asdf=2, b=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t892[asdf], ((void *)0), P1, ((void *)0))=0, t891={5:0}, t892={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$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L771] 4 x$w_buff1 = x$w_buff0 [L772] 4 x$w_buff0 = 2 [L773] 4 x$w_buff1_used = x$w_buff0_used [L774] 4 x$w_buff0_used = (_Bool)1 [L775] CALL 4 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND TRUE 4 !expression [L18] 4 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, a=0, arg={0:0}, b=0, expression=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$w_buff0=2, x$w_buff0_used=1, x$w_buff1=2, x$w_buff1_used=1, x=0, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 162 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: 3.8s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 191 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: 78.6s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 72.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 353 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 287 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 756 IncrementalHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 15 mSDtfsCounter, 756 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=177occurred 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, 0.6s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 924 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, 191 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: 198.0s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 193.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 100 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 402 IncrementalHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 15 mSDtfsCounter, 402 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=195occurred 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, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 162 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! [2023-08-03 23:38:21,994 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...