/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe037_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 07:31:53,977 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 07:31:54,029 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 07:31:54,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 07:31:54,033 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 07:31:54,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 07:31:54,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 07:31:54,061 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 07:31:54,062 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 07:31:54,062 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 07:31:54,062 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 07:31:54,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 07:31:54,063 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 07:31:54,063 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 07:31:54,063 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 07:31:54,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 07:31:54,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 07:31:54,064 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 07:31:54,064 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 07:31:54,065 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 07:31:54,065 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 07:31:54,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 07:31:54,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 07:31:54,070 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 07:31:54,072 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 07:31:54,073 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 07:31:54,073 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 07:31:54,074 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 07:31:54,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 07:31:54,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 07:31:54,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:31:54,075 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 07:31:54,076 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 07:31:54,077 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 07:31:54,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 07:31:54,287 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 07:31:54,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 07:31:54,291 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 07:31:54,291 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 07:31:54,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe037_bound2.i [2023-08-04 07:31:55,441 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 07:31:55,652 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 07:31:55,653 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe037_bound2.i [2023-08-04 07:31:55,662 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30f2c317/fdd202d731e542d1841e40e43f677e13/FLAG01b09a4d3 [2023-08-04 07:31:55,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a30f2c317/fdd202d731e542d1841e40e43f677e13 [2023-08-04 07:31:55,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 07:31:55,680 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 07:31:55,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 07:31:55,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 07:31:55,692 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 07:31:55,693 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:31:55" (1/1) ... [2023-08-04 07:31:55,694 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5db2e706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:55, skipping insertion in model container [2023-08-04 07:31:55,694 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:31:55" (1/1) ... [2023-08-04 07:31:55,733 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 07:31:55,880 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_safe037_bound2.i[941,954] [2023-08-04 07:31:56,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:31:56,030 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 07:31:56,039 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_safe037_bound2.i[941,954] [2023-08-04 07:31:56,056 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 07:31:56,057 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 07:31:56,077 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:31:56,101 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:31:56,101 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:31:56,105 INFO L206 MainTranslator]: Completed translation [2023-08-04 07:31:56,106 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56 WrapperNode [2023-08-04 07:31:56,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 07:31:56,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 07:31:56,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 07:31:56,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 07:31:56,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,137 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,157 INFO L138 Inliner]: procedures = 176, calls = 59, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 96 [2023-08-04 07:31:56,157 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 07:31:56,158 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 07:31:56,158 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 07:31:56,158 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 07:31:56,163 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,164 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,179 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,182 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,184 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,185 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,186 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 07:31:56,188 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 07:31:56,188 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 07:31:56,188 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 07:31:56,198 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (1/1) ... [2023-08-04 07:31:56,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:31:56,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:31:56,246 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 07:31:56,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 07:31:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 07:31:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 07:31:56,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 07:31:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 07:31:56,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 07:31:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 07:31:56,278 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 07:31:56,278 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 07:31:56,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 07:31:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 07:31:56,279 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 07:31:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 07:31:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 07:31:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 07:31:56,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 07:31:56,280 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 07:31:56,370 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 07:31:56,371 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 07:31:56,480 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 07:31:56,485 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 07:31:56,485 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 07:31:56,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:31:56 BoogieIcfgContainer [2023-08-04 07:31:56,486 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 07:31:56,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 07:31:56,488 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 07:31:56,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 07:31:56,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 07:31:55" (1/3) ... [2023-08-04 07:31:56,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161fa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:31:56, skipping insertion in model container [2023-08-04 07:31:56,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:31:56" (2/3) ... [2023-08-04 07:31:56,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161fa07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:31:56, skipping insertion in model container [2023-08-04 07:31:56,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:31:56" (3/3) ... [2023-08-04 07:31:56,491 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe037_bound2.i [2023-08-04 07:31:56,495 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 07:31:56,501 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 07:31:56,502 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 07:31:56,502 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 07:31:56,533 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:31:56,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 229 flow [2023-08-04 07:31:56,624 INFO L124 PetriNetUnfolderBase]: 30/415 cut-off events. [2023-08-04 07:31:56,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:31:56,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 415 events. 30/415 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1843 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 244. Up to 16 conditions per place. [2023-08-04 07:31:56,632 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 229 flow [2023-08-04 07:31:56,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 92 transitions, 193 flow [2023-08-04 07:31:56,637 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:31:56,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 92 transitions, 193 flow [2023-08-04 07:31:56,644 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 92 transitions, 193 flow [2023-08-04 07:31:56,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 193 flow [2023-08-04 07:31:56,675 INFO L124 PetriNetUnfolderBase]: 22/312 cut-off events. [2023-08-04 07:31:56,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:31:56,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 312 events. 22/312 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1222 event pairs, 0 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 190. Up to 16 conditions per place. [2023-08-04 07:31:56,678 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2023-08-04 07:31:58,109 INFO L134 LiptonReduction]: Checked pairs total: 2828 [2023-08-04 07:31:58,110 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-04 07:31:58,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:31:58,125 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;@2d9197ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:31:58,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 07:31:58,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:31:58,128 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 07:31:58,128 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:31:58,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:31:58,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 07:31:58,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:31:58,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:31:58,133 INFO L85 PathProgramCache]: Analyzing trace with hash 357401821, now seen corresponding path program 1 times [2023-08-04 07:31:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:31:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966509096] [2023-08-04 07:31:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:31:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:31:58,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:31:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:31:58,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:31:58,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966509096] [2023-08-04 07:31:58,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966509096] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:31:58,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:31:58,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:31:58,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112271588] [2023-08-04 07:31:58,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:31:58,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:31:58,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:31:58,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:31:58,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:31:58,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 183 [2023-08-04 07:31:58,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:58,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:31:58,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 183 [2023-08-04 07:31:58,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:31:58,466 INFO L124 PetriNetUnfolderBase]: 400/751 cut-off events. [2023-08-04 07:31:58,466 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 07:31:58,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 751 events. 400/751 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3815 event pairs, 310 based on Foata normal form. 0/682 useless extension candidates. Maximal degree in co-relation 1447. Up to 668 conditions per place. [2023-08-04 07:31:58,471 INFO L140 encePairwiseOnDemand]: 179/183 looper letters, 20 selfloop transitions, 2 changer transitions 1/26 dead transitions. [2023-08-04 07:31:58,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 107 flow [2023-08-04 07:31:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:31:58,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:31:58,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-04 07:31:58,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591985428051002 [2023-08-04 07:31:58,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-04 07:31:58,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-04 07:31:58,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:31:58,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-04 07:31:58,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:58,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 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) [2023-08-04 07:31:58,490 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 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) [2023-08-04 07:31:58,491 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 57 flow. Second operand 3 states and 307 transitions. [2023-08-04 07:31:58,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 107 flow [2023-08-04 07:31:58,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:31:58,494 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 63 flow [2023-08-04 07:31:58,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-04 07:31:58,497 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 07:31:58,497 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 63 flow [2023-08-04 07:31:58,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:58,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:31:58,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:31:58,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 07:31:58,498 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:31:58,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:31:58,498 INFO L85 PathProgramCache]: Analyzing trace with hash -864933255, now seen corresponding path program 1 times [2023-08-04 07:31:58,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:31:58,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652420218] [2023-08-04 07:31:58,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:31:58,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:31:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:31:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:31:58,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:31:58,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652420218] [2023-08-04 07:31:58,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652420218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:31:58,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372322716] [2023-08-04 07:31:58,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:31:58,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:31:58,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:31:58,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:31:58,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 07:31:58,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:31:58,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:31:58,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:31:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:31:58,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:31:58,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372322716] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:31:58,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:31:58,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:31:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774204891] [2023-08-04 07:31:58,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:31:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:31:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:31:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:31:58,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:31:58,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 183 [2023-08-04 07:31:58,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:58,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:31:58,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 183 [2023-08-04 07:31:58,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:31:58,703 INFO L124 PetriNetUnfolderBase]: 338/604 cut-off events. [2023-08-04 07:31:58,703 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 07:31:58,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 604 events. 338/604 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2822 event pairs, 202 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1184. Up to 529 conditions per place. [2023-08-04 07:31:58,706 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 22 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2023-08-04 07:31:58,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 123 flow [2023-08-04 07:31:58,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:31:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:31:58,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-08-04 07:31:58,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610200364298725 [2023-08-04 07:31:58,709 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-08-04 07:31:58,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-08-04 07:31:58,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:31:58,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-08-04 07:31:58,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:58,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 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) [2023-08-04 07:31:58,712 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 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) [2023-08-04 07:31:58,712 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 63 flow. Second operand 3 states and 308 transitions. [2023-08-04 07:31:58,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 123 flow [2023-08-04 07:31:58,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:31:58,713 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 67 flow [2023-08-04 07:31:58,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=23} [2023-08-04 07:31:58,714 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2023-08-04 07:31:58,714 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 67 flow [2023-08-04 07:31:58,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:58,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:31:58,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:31:58,734 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 07:31:58,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:31:58,920 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:31:58,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:31:58,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1462691474, now seen corresponding path program 1 times [2023-08-04 07:31:58,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:31:58,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056785786] [2023-08-04 07:31:58,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:31:58,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:31:58,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:31:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:31:59,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:31:59,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056785786] [2023-08-04 07:31:59,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056785786] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:31:59,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57610667] [2023-08-04 07:31:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:31:59,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:31:59,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:31:59,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:31:59,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 07:31:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:31:59,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:31:59,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:31:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:31:59,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:31:59,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57610667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:31:59,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:31:59,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:31:59,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438232140] [2023-08-04 07:31:59,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:31:59,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:31:59,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:31:59,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:31:59,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:31:59,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 183 [2023-08-04 07:31:59,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:59,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:31:59,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 183 [2023-08-04 07:31:59,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:31:59,239 INFO L124 PetriNetUnfolderBase]: 314/532 cut-off events. [2023-08-04 07:31:59,240 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 07:31:59,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1113 conditions, 532 events. 314/532 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2187 event pairs, 209 based on Foata normal form. 0/504 useless extension candidates. Maximal degree in co-relation 1097. Up to 407 conditions per place. [2023-08-04 07:31:59,244 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 24 selfloop transitions, 2 changer transitions 1/30 dead transitions. [2023-08-04 07:31:59,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 135 flow [2023-08-04 07:31:59,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:31:59,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:31:59,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 310 transitions. [2023-08-04 07:31:59,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646630236794171 [2023-08-04 07:31:59,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 310 transitions. [2023-08-04 07:31:59,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 310 transitions. [2023-08-04 07:31:59,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:31:59,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 310 transitions. [2023-08-04 07:31:59,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:59,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 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) [2023-08-04 07:31:59,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 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) [2023-08-04 07:31:59,252 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 67 flow. Second operand 3 states and 310 transitions. [2023-08-04 07:31:59,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 135 flow [2023-08-04 07:31:59,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 131 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:31:59,253 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 71 flow [2023-08-04 07:31:59,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=35, PETRI_TRANSITIONS=23} [2023-08-04 07:31:59,255 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-04 07:31:59,255 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 71 flow [2023-08-04 07:31:59,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:59,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:31:59,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:31:59,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 07:31:59,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 07:31:59,472 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:31:59,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:31:59,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1684421926, now seen corresponding path program 1 times [2023-08-04 07:31:59,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:31:59,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464667184] [2023-08-04 07:31:59,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:31:59,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:31:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:31:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:31:59,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:31:59,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464667184] [2023-08-04 07:31:59,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464667184] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:31:59,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942012698] [2023-08-04 07:31:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:31:59,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:31:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:31:59,521 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:31:59,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 07:31:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:31:59,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:31:59,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:31:59,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:31:59,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:31:59,622 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:31:59,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942012698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:31:59,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:31:59,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:31:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034146310] [2023-08-04 07:31:59,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:31:59,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:31:59,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:31:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:31:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:31:59,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 183 [2023-08-04 07:31:59,636 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:59,636 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:31:59,636 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 183 [2023-08-04 07:31:59,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:31:59,647 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 07:31:59,647 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 07:31:59,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 07:31:59,648 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 07:31:59,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 07:31:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:31:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:31:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 382 transitions. [2023-08-04 07:31:59,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5218579234972678 [2023-08-04 07:31:59,649 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 382 transitions. [2023-08-04 07:31:59,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 382 transitions. [2023-08-04 07:31:59,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:31:59,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 382 transitions. [2023-08-04 07:31:59,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:59,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:59,651 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 183.0) internal successors, (915), 5 states have internal predecessors, (915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:59,651 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 71 flow. Second operand 4 states and 382 transitions. [2023-08-04 07:31:59,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 07:31:59,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:31:59,652 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 07:31:59,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 07:31:59,653 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -12 predicate places. [2023-08-04 07:31:59,653 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 07:31:59,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:31:59,656 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 07:31:59,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 07:31:59,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:31:59,861 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 07:31:59,863 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 07:31:59,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 107 transitions, 229 flow [2023-08-04 07:31:59,903 INFO L124 PetriNetUnfolderBase]: 30/415 cut-off events. [2023-08-04 07:31:59,904 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:31:59,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 415 events. 30/415 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1843 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 244. Up to 16 conditions per place. [2023-08-04 07:31:59,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 107 transitions, 229 flow [2023-08-04 07:31:59,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 79 transitions, 173 flow [2023-08-04 07:31:59,905 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:31:59,905 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 79 transitions, 173 flow [2023-08-04 07:31:59,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 79 transitions, 173 flow [2023-08-04 07:31:59,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 79 transitions, 173 flow [2023-08-04 07:31:59,915 INFO L124 PetriNetUnfolderBase]: 6/191 cut-off events. [2023-08-04 07:31:59,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:31:59,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 191 events. 6/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 576 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-04 07:31:59,917 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2023-08-04 07:32:01,172 INFO L134 LiptonReduction]: Checked pairs total: 2133 [2023-08-04 07:32:01,172 INFO L136 LiptonReduction]: Total number of compositions: 61 [2023-08-04 07:32:01,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 07:32:01,174 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;@2d9197ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:32:01,174 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 07:32:01,176 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:32:01,176 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-04 07:32:01,176 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:32:01,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:01,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 07:32:01,177 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 07:32:01,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:01,177 INFO L85 PathProgramCache]: Analyzing trace with hash 31761055, now seen corresponding path program 1 times [2023-08-04 07:32:01,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:01,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862287185] [2023-08-04 07:32:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:01,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:01,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:32:01,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:01,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862287185] [2023-08-04 07:32:01,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862287185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:32:01,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:32:01,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:32:01,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505723528] [2023-08-04 07:32:01,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:32:01,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:32:01,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:01,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:32:01,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:32:01,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 168 [2023-08-04 07:32:01,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:01,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:01,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 168 [2023-08-04 07:32:01,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:01,241 INFO L124 PetriNetUnfolderBase]: 160/345 cut-off events. [2023-08-04 07:32:01,241 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:32:01,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 687 conditions, 345 events. 160/345 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1600 event pairs, 118 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 670. Up to 284 conditions per place. [2023-08-04 07:32:01,242 INFO L140 encePairwiseOnDemand]: 165/168 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-04 07:32:01,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 107 flow [2023-08-04 07:32:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:32:01,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:32:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 303 transitions. [2023-08-04 07:32:01,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2023-08-04 07:32:01,244 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 303 transitions. [2023-08-04 07:32:01,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 303 transitions. [2023-08-04 07:32:01,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:01,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 303 transitions. [2023-08-04 07:32:01,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:01,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:01,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:01,245 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 61 flow. Second operand 3 states and 303 transitions. [2023-08-04 07:32:01,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 107 flow [2023-08-04 07:32:01,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:32:01,246 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 69 flow [2023-08-04 07:32:01,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=168, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-04 07:32:01,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 07:32:01,247 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 69 flow [2023-08-04 07:32:01,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:01,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:01,247 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 07:32:01,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 07:32:01,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 07:32:01,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash 25991802, now seen corresponding path program 1 times [2023-08-04 07:32:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:01,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7362845] [2023-08-04 07:32:01,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:01,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:32:01,256 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:32:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:32:01,269 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:32:01,269 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:32:01,269 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 07:32:01,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 07:32:01,269 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 07:32:01,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 07:32:01,269 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 07:32:01,270 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 07:32:01,270 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 07:32:01,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 07:32:01,282 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:32:01,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 128 transitions, 292 flow [2023-08-04 07:32:01,350 INFO L124 PetriNetUnfolderBase]: 93/1305 cut-off events. [2023-08-04 07:32:01,351 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 07:32:01,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 1305 events. 93/1305 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8845 event pairs, 0 based on Foata normal form. 0/1146 useless extension candidates. Maximal degree in co-relation 946. Up to 54 conditions per place. [2023-08-04 07:32:01,352 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 128 transitions, 292 flow [2023-08-04 07:32:01,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 113 transitions, 250 flow [2023-08-04 07:32:01,354 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:32:01,354 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 113 transitions, 250 flow [2023-08-04 07:32:01,354 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 113 transitions, 250 flow [2023-08-04 07:32:01,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 113 transitions, 250 flow [2023-08-04 07:32:01,432 INFO L124 PetriNetUnfolderBase]: 66/968 cut-off events. [2023-08-04 07:32:01,432 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 07:32:01,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1040 conditions, 968 events. 66/968 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5930 event pairs, 0 based on Foata normal form. 0/863 useless extension candidates. Maximal degree in co-relation 718. Up to 54 conditions per place. [2023-08-04 07:32:01,442 INFO L119 LiptonReduction]: Number of co-enabled transitions 3996 [2023-08-04 07:32:03,001 INFO L134 LiptonReduction]: Checked pairs total: 8202 [2023-08-04 07:32:03,001 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-08-04 07:32:03,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:32:03,003 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;@2d9197ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:32:03,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 07:32:03,005 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:32:03,005 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 07:32:03,005 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:32:03,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:03,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 07:32:03,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:03,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:03,006 INFO L85 PathProgramCache]: Analyzing trace with hash 636030050, now seen corresponding path program 1 times [2023-08-04 07:32:03,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:03,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650220851] [2023-08-04 07:32:03,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:03,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:32:03,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:03,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650220851] [2023-08-04 07:32:03,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650220851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:32:03,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:32:03,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:32:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12246559] [2023-08-04 07:32:03,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:32:03,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:32:03,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:03,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:32:03,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:32:03,035 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 210 [2023-08-04 07:32:03,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:03,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:03,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 210 [2023-08-04 07:32:03,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:06,094 INFO L124 PetriNetUnfolderBase]: 33046/47789 cut-off events. [2023-08-04 07:32:06,095 INFO L125 PetriNetUnfolderBase]: For 1449/1449 co-relation queries the response was YES. [2023-08-04 07:32:06,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93180 conditions, 47789 events. 33046/47789 cut-off events. For 1449/1449 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 334725 event pairs, 26064 based on Foata normal form. 0/45422 useless extension candidates. Maximal degree in co-relation 26572. Up to 43520 conditions per place. [2023-08-04 07:32:06,378 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 31 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-04 07:32:06,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 174 flow [2023-08-04 07:32:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:32:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:32:06,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-04 07:32:06,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2023-08-04 07:32:06,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-04 07:32:06,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-04 07:32:06,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:06,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-04 07:32:06,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:06,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:06,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:06,384 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 102 flow. Second operand 3 states and 371 transitions. [2023-08-04 07:32:06,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 174 flow [2023-08-04 07:32:06,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:32:06,386 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 112 flow [2023-08-04 07:32:06,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-08-04 07:32:06,387 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-04 07:32:06,387 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 112 flow [2023-08-04 07:32:06,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:06,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:06,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:32:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 07:32:06,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:06,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:06,388 INFO L85 PathProgramCache]: Analyzing trace with hash -806073826, now seen corresponding path program 1 times [2023-08-04 07:32:06,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:06,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42603066] [2023-08-04 07:32:06,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:06,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:06,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:06,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 07:32:06,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42603066] [2023-08-04 07:32:06,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42603066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:32:06,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774997084] [2023-08-04 07:32:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:06,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:06,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:32:06,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:32:06,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 07:32:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:06,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:32:06,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:32:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:32:06,494 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:32:06,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774997084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:32:06,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:32:06,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:32:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791950899] [2023-08-04 07:32:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:32:06,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:32:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:06,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:32:06,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:32:06,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 210 [2023-08-04 07:32:06,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:06,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:06,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 210 [2023-08-04 07:32:06,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:09,367 INFO L124 PetriNetUnfolderBase]: 31406/44873 cut-off events. [2023-08-04 07:32:09,367 INFO L125 PetriNetUnfolderBase]: For 1143/1143 co-relation queries the response was YES. [2023-08-04 07:32:09,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87754 conditions, 44873 events. 31406/44873 cut-off events. For 1143/1143 co-relation queries the response was YES. Maximal size of possible extension queue 1586. Compared 307151 event pairs, 24928 based on Foata normal form. 0/42773 useless extension candidates. Maximal degree in co-relation 87717. Up to 40987 conditions per place. [2023-08-04 07:32:09,580 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 36 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-04 07:32:09,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 204 flow [2023-08-04 07:32:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:32:09,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:32:09,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-04 07:32:09,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5936507936507937 [2023-08-04 07:32:09,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-04 07:32:09,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-04 07:32:09,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:09,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-04 07:32:09,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:09,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:09,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:09,588 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 112 flow. Second operand 3 states and 374 transitions. [2023-08-04 07:32:09,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 204 flow [2023-08-04 07:32:09,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:32:09,591 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 122 flow [2023-08-04 07:32:09,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-04 07:32:09,592 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-04 07:32:09,592 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 122 flow [2023-08-04 07:32:09,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:09,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:09,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:32:09,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 07:32:09,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:09,799 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:09,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:09,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1167765264, now seen corresponding path program 1 times [2023-08-04 07:32:09,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:09,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789304812] [2023-08-04 07:32:09,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:09,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 07:32:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:09,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789304812] [2023-08-04 07:32:09,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789304812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:32:09,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60508708] [2023-08-04 07:32:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:09,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:32:09,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:32:09,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 07:32:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:09,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:32:09,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:32:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:32:09,891 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:32:09,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60508708] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:32:09,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:32:09,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:32:09,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144573060] [2023-08-04 07:32:09,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:32:09,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:32:09,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:09,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:32:09,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:32:09,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 210 [2023-08-04 07:32:09,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:09,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:09,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 210 [2023-08-04 07:32:09,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:12,533 INFO L124 PetriNetUnfolderBase]: 30734/43358 cut-off events. [2023-08-04 07:32:12,533 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-08-04 07:32:12,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85613 conditions, 43358 events. 30734/43358 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 290196 event pairs, 23582 based on Foata normal form. 0/41615 useless extension candidates. Maximal degree in co-relation 24344. Up to 37757 conditions per place. [2023-08-04 07:32:12,718 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 41 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-04 07:32:12,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 232 flow [2023-08-04 07:32:12,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:32:12,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:32:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-08-04 07:32:12,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-08-04 07:32:12,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-08-04 07:32:12,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-08-04 07:32:12,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:12,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-08-04 07:32:12,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:12,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:12,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:12,722 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 122 flow. Second operand 3 states and 378 transitions. [2023-08-04 07:32:12,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 232 flow [2023-08-04 07:32:12,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:32:12,723 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 132 flow [2023-08-04 07:32:12,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-04 07:32:12,724 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-04 07:32:12,724 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 132 flow [2023-08-04 07:32:12,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:12,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:12,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:32:12,729 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 07:32:12,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:12,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:12,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:12,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1489260247, now seen corresponding path program 1 times [2023-08-04 07:32:12,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:12,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050551244] [2023-08-04 07:32:12,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:12,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:32:12,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:12,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050551244] [2023-08-04 07:32:12,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050551244] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:32:12,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780099740] [2023-08-04 07:32:12,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:12,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:12,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:32:12,985 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:32:12,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 07:32:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:13,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:32:13,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:32:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:32:13,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:32:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 07:32:13,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780099740] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:32:13,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:32:13,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:32:13,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419254216] [2023-08-04 07:32:13,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:32:13,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:32:13,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:13,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:32:13,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:32:13,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-04 07:32:13,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:13,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:13,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-04 07:32:13,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:15,169 INFO L124 PetriNetUnfolderBase]: 24232/33893 cut-off events. [2023-08-04 07:32:15,169 INFO L125 PetriNetUnfolderBase]: For 3624/3624 co-relation queries the response was YES. [2023-08-04 07:32:15,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69782 conditions, 33893 events. 24232/33893 cut-off events. For 3624/3624 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 213778 event pairs, 14820 based on Foata normal form. 3/33860 useless extension candidates. Maximal degree in co-relation 24810. Up to 31258 conditions per place. [2023-08-04 07:32:15,332 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 36 selfloop transitions, 3 changer transitions 1/49 dead transitions. [2023-08-04 07:32:15,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 228 flow [2023-08-04 07:32:15,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:32:15,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:32:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-08-04 07:32:15,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2023-08-04 07:32:15,334 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-08-04 07:32:15,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-08-04 07:32:15,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:15,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-08-04 07:32:15,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:15,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:15,339 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:15,339 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 132 flow. Second operand 4 states and 483 transitions. [2023-08-04 07:32:15,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 228 flow [2023-08-04 07:32:15,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:32:15,343 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 144 flow [2023-08-04 07:32:15,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-04 07:32:15,344 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-04 07:32:15,344 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 144 flow [2023-08-04 07:32:15,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:15,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:15,345 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:32:15,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 07:32:15,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:15,568 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:15,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:15,569 INFO L85 PathProgramCache]: Analyzing trace with hash 82853076, now seen corresponding path program 1 times [2023-08-04 07:32:15,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:15,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499129891] [2023-08-04 07:32:15,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:15,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 07:32:15,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499129891] [2023-08-04 07:32:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499129891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:32:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226364098] [2023-08-04 07:32:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:15,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:15,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:32:15,764 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:32:15,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 07:32:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:15,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:32:15,846 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:32:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 07:32:15,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:32:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 07:32:15,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226364098] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:32:15,880 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:32:15,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 07:32:15,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860835402] [2023-08-04 07:32:15,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:32:15,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:32:15,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:32:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:32:15,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-04 07:32:15,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:15,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:15,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-04 07:32:15,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:17,798 INFO L124 PetriNetUnfolderBase]: 19198/26485 cut-off events. [2023-08-04 07:32:17,798 INFO L125 PetriNetUnfolderBase]: For 2439/2439 co-relation queries the response was YES. [2023-08-04 07:32:17,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54371 conditions, 26485 events. 19198/26485 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 160016 event pairs, 11902 based on Foata normal form. 27/26503 useless extension candidates. Maximal degree in co-relation 19295. Up to 23785 conditions per place. [2023-08-04 07:32:17,911 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 44 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2023-08-04 07:32:17,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 272 flow [2023-08-04 07:32:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:32:17,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:32:17,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2023-08-04 07:32:17,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5845238095238096 [2023-08-04 07:32:17,913 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 491 transitions. [2023-08-04 07:32:17,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 491 transitions. [2023-08-04 07:32:17,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:17,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 491 transitions. [2023-08-04 07:32:17,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:17,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:17,915 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:17,915 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 144 flow. Second operand 4 states and 491 transitions. [2023-08-04 07:32:17,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 272 flow [2023-08-04 07:32:17,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 265 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 07:32:17,919 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 151 flow [2023-08-04 07:32:17,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-04 07:32:17,919 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-04 07:32:17,919 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 151 flow [2023-08-04 07:32:17,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:17,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:17,920 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:32:17,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-04 07:32:18,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:18,124 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:18,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:18,125 INFO L85 PathProgramCache]: Analyzing trace with hash 697728069, now seen corresponding path program 1 times [2023-08-04 07:32:18,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:18,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157220092] [2023-08-04 07:32:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:32:18,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157220092] [2023-08-04 07:32:18,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157220092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:32:18,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119417756] [2023-08-04 07:32:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:18,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:18,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:32:18,168 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:32:18,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 07:32:18,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:18,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:32:18,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:32:18,256 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:32:18,256 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:32:18,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:32:18,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119417756] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:32:18,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:32:18,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 07:32:18,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927294506] [2023-08-04 07:32:18,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:32:18,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:32:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:18,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:32:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:32:18,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-04 07:32:18,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:18,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:18,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-04 07:32:18,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:19,729 INFO L124 PetriNetUnfolderBase]: 17362/23209 cut-off events. [2023-08-04 07:32:19,730 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-04 07:32:19,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48754 conditions, 23209 events. 17362/23209 cut-off events. For 2377/2377 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 127861 event pairs, 6886 based on Foata normal form. 243/23443 useless extension candidates. Maximal degree in co-relation 17297. Up to 11794 conditions per place. [2023-08-04 07:32:19,842 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 52 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2023-08-04 07:32:19,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 311 flow [2023-08-04 07:32:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:32:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:32:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 499 transitions. [2023-08-04 07:32:19,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.594047619047619 [2023-08-04 07:32:19,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 499 transitions. [2023-08-04 07:32:19,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 499 transitions. [2023-08-04 07:32:19,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:19,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 499 transitions. [2023-08-04 07:32:19,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:19,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:19,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:19,846 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 151 flow. Second operand 4 states and 499 transitions. [2023-08-04 07:32:19,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 311 flow [2023-08-04 07:32:19,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 304 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 07:32:19,849 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 158 flow [2023-08-04 07:32:19,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2023-08-04 07:32:19,850 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-04 07:32:19,850 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 158 flow [2023-08-04 07:32:19,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 115.0) internal successors, (575), 5 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:19,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:19,850 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:32:19,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 07:32:20,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-04 07:32:20,055 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:20,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash 706993965, now seen corresponding path program 1 times [2023-08-04 07:32:20,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:20,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434203761] [2023-08-04 07:32:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:20,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:20,198 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 07:32:20,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:20,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434203761] [2023-08-04 07:32:20,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434203761] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:32:20,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:32:20,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:32:20,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630525545] [2023-08-04 07:32:20,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:32:20,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 07:32:20,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 07:32:20,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 07:32:20,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 210 [2023-08-04 07:32:20,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:20,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:20,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 210 [2023-08-04 07:32:20,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:21,525 INFO L124 PetriNetUnfolderBase]: 15929/20837 cut-off events. [2023-08-04 07:32:21,525 INFO L125 PetriNetUnfolderBase]: For 10195/10195 co-relation queries the response was YES. [2023-08-04 07:32:21,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47566 conditions, 20837 events. 15929/20837 cut-off events. For 10195/10195 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 100149 event pairs, 3522 based on Foata normal form. 729/21562 useless extension candidates. Maximal degree in co-relation 30834. Up to 16568 conditions per place. [2023-08-04 07:32:21,612 INFO L140 encePairwiseOnDemand]: 201/210 looper letters, 53 selfloop transitions, 7 changer transitions 25/94 dead transitions. [2023-08-04 07:32:21,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 94 transitions, 504 flow [2023-08-04 07:32:21,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 07:32:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 07:32:21,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2023-08-04 07:32:21,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5771428571428572 [2023-08-04 07:32:21,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 606 transitions. [2023-08-04 07:32:21,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 606 transitions. [2023-08-04 07:32:21,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:21,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 606 transitions. [2023-08-04 07:32:21,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:21,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:21,617 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:21,617 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 158 flow. Second operand 5 states and 606 transitions. [2023-08-04 07:32:21,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 94 transitions, 504 flow [2023-08-04 07:32:21,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 490 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 07:32:21,622 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 214 flow [2023-08-04 07:32:21,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=214, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-08-04 07:32:21,623 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 19 predicate places. [2023-08-04 07:32:21,623 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 214 flow [2023-08-04 07:32:21,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:21,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:21,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:32:21,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 07:32:21,624 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:21,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:21,624 INFO L85 PathProgramCache]: Analyzing trace with hash 865084266, now seen corresponding path program 1 times [2023-08-04 07:32:21,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:21,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135004322] [2023-08-04 07:32:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:21,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:32:21,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135004322] [2023-08-04 07:32:21,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135004322] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:32:21,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315492435] [2023-08-04 07:32:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:32:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:32:21,716 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:32:21,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 07:32:21,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:21,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-04 07:32:21,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:32:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:32:21,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:32:22,279 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:32:22,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315492435] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:32:22,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:32:22,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 11 [2023-08-04 07:32:22,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773143484] [2023-08-04 07:32:22,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:32:22,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-04 07:32:22,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:22,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-04 07:32:22,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-04 07:32:22,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 210 [2023-08-04 07:32:22,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 214 flow. Second operand has 13 states, 13 states have (on average 97.61538461538461) internal successors, (1269), 13 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:22,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:22,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 210 [2023-08-04 07:32:22,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:32:36,846 INFO L124 PetriNetUnfolderBase]: 155115/198587 cut-off events. [2023-08-04 07:32:36,846 INFO L125 PetriNetUnfolderBase]: For 163230/163230 co-relation queries the response was YES. [2023-08-04 07:32:37,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 567493 conditions, 198587 events. 155115/198587 cut-off events. For 163230/163230 co-relation queries the response was YES. Maximal size of possible extension queue 6120. Compared 1168083 event pairs, 2904 based on Foata normal form. 10855/209410 useless extension candidates. Maximal degree in co-relation 514682. Up to 69481 conditions per place. [2023-08-04 07:32:38,272 INFO L140 encePairwiseOnDemand]: 193/210 looper letters, 266 selfloop transitions, 177 changer transitions 178/624 dead transitions. [2023-08-04 07:32:38,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 624 transitions, 3636 flow [2023-08-04 07:32:38,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-04 07:32:38,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-04 07:32:38,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3310 transitions. [2023-08-04 07:32:38,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5435139573070608 [2023-08-04 07:32:38,289 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3310 transitions. [2023-08-04 07:32:38,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3310 transitions. [2023-08-04 07:32:38,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:32:38,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3310 transitions. [2023-08-04 07:32:38,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 114.13793103448276) internal successors, (3310), 29 states have internal predecessors, (3310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:38,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:38,320 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:38,321 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 214 flow. Second operand 29 states and 3310 transitions. [2023-08-04 07:32:38,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 624 transitions, 3636 flow [2023-08-04 07:32:45,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 624 transitions, 3615 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-04 07:32:45,600 INFO L231 Difference]: Finished difference. Result has 104 places, 243 transitions, 1603 flow [2023-08-04 07:32:45,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1603, PETRI_PLACES=104, PETRI_TRANSITIONS=243} [2023-08-04 07:32:45,601 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 53 predicate places. [2023-08-04 07:32:45,601 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 243 transitions, 1603 flow [2023-08-04 07:32:45,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 97.61538461538461) internal successors, (1269), 13 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:32:45,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:32:45,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:32:45,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 07:32:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-04 07:32:45,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:32:45,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:32:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1682104004, now seen corresponding path program 1 times [2023-08-04 07:32:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:32:45,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185655270] [2023-08-04 07:32:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:32:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:32:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:32:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:32:45,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:32:45,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185655270] [2023-08-04 07:32:45,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185655270] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:32:45,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:32:45,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 07:32:45,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866890985] [2023-08-04 07:32:45,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:32:45,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 07:32:45,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:32:45,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 07:32:45,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 07:32:45,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-04 07:32:45,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 243 transitions, 1603 flow. Second operand has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 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) [2023-08-04 07:32:45,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:32:45,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-04 07:32:45,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:33:05,106 INFO L124 PetriNetUnfolderBase]: 175842/229690 cut-off events. [2023-08-04 07:33:05,107 INFO L125 PetriNetUnfolderBase]: For 670456/671612 co-relation queries the response was YES. [2023-08-04 07:33:06,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888254 conditions, 229690 events. 175842/229690 cut-off events. For 670456/671612 co-relation queries the response was YES. Maximal size of possible extension queue 7508. Compared 1460961 event pairs, 5495 based on Foata normal form. 2835/231501 useless extension candidates. Maximal degree in co-relation 313439. Up to 96450 conditions per place. [2023-08-04 07:33:07,528 INFO L140 encePairwiseOnDemand]: 205/210 looper letters, 231 selfloop transitions, 18 changer transitions 123/437 dead transitions. [2023-08-04 07:33:07,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 437 transitions, 3751 flow [2023-08-04 07:33:07,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:33:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:33:07,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 517 transitions. [2023-08-04 07:33:07,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6154761904761905 [2023-08-04 07:33:07,545 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 517 transitions. [2023-08-04 07:33:07,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 517 transitions. [2023-08-04 07:33:07,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:33:07,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 517 transitions. [2023-08-04 07:33:07,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.25) internal successors, (517), 4 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:33:07,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:33:07,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 210.0) internal successors, (1050), 5 states have internal predecessors, (1050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:33:07,563 INFO L175 Difference]: Start difference. First operand has 104 places, 243 transitions, 1603 flow. Second operand 4 states and 517 transitions. [2023-08-04 07:33:07,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 437 transitions, 3751 flow [2023-08-04 07:37:13,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 437 transitions, 2945 flow, removed 382 selfloop flow, removed 7 redundant places. [2023-08-04 07:37:13,826 INFO L231 Difference]: Finished difference. Result has 92 places, 231 transitions, 1311 flow [2023-08-04 07:37:13,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1311, PETRI_PLACES=92, PETRI_TRANSITIONS=231} [2023-08-04 07:37:13,826 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2023-08-04 07:37:13,826 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 231 transitions, 1311 flow [2023-08-04 07:37:13,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.5) internal successors, (462), 4 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) [2023-08-04 07:37:13,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:37:13,827 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:37:13,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 07:37:13,827 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:37:13,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:37:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1098203511, now seen corresponding path program 1 times [2023-08-04 07:37:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:37:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582866400] [2023-08-04 07:37:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:37:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:37:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:37:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:37:13,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:37:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582866400] [2023-08-04 07:37:13,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582866400] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:37:13,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217896052] [2023-08-04 07:37:13,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:37:13,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:37:13,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:37:13,987 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:37:13,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 07:37:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:37:14,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-04 07:37:14,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:37:14,249 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:37:14,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:37:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 07:37:14,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217896052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:37:14,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:37:14,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 14 [2023-08-04 07:37:14,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619683759] [2023-08-04 07:37:14,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:37:14,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-04 07:37:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:37:14,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-04 07:37:14,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-08-04 07:37:14,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 210 [2023-08-04 07:37:14,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 231 transitions, 1311 flow. Second operand has 16 states, 16 states have (on average 97.3125) internal successors, (1557), 16 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:37:14,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:37:14,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 210 [2023-08-04 07:37:14,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:37:34,698 INFO L124 PetriNetUnfolderBase]: 187303/247995 cut-off events. [2023-08-04 07:37:34,698 INFO L125 PetriNetUnfolderBase]: For 417199/417199 co-relation queries the response was YES. [2023-08-04 07:37:35,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853135 conditions, 247995 events. 187303/247995 cut-off events. For 417199/417199 co-relation queries the response was YES. Maximal size of possible extension queue 9236. Compared 1673001 event pairs, 2873 based on Foata normal form. 5677/253660 useless extension candidates. Maximal degree in co-relation 687708. Up to 118278 conditions per place. [2023-08-04 07:37:36,624 INFO L140 encePairwiseOnDemand]: 193/210 looper letters, 562 selfloop transitions, 696 changer transitions 902/2163 dead transitions. [2023-08-04 07:37:36,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 2163 transitions, 16109 flow [2023-08-04 07:37:36,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-08-04 07:37:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-08-04 07:37:36,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 5490 transitions. [2023-08-04 07:37:36,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335276967930029 [2023-08-04 07:37:36,658 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 5490 transitions. [2023-08-04 07:37:36,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 5490 transitions. [2023-08-04 07:37:36,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:37:36,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 5490 transitions. [2023-08-04 07:37:36,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 112.04081632653062) internal successors, (5490), 49 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:37:36,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 210.0) internal successors, (10500), 50 states have internal predecessors, (10500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:37:36,726 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 210.0) internal successors, (10500), 50 states have internal predecessors, (10500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:37:36,726 INFO L175 Difference]: Start difference. First operand has 92 places, 231 transitions, 1311 flow. Second operand 49 states and 5490 transitions. [2023-08-04 07:37:36,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 2163 transitions, 16109 flow [2023-08-04 07:38:02,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 2163 transitions, 16029 flow, removed 40 selfloop flow, removed 0 redundant places. [2023-08-04 07:38:02,821 INFO L231 Difference]: Finished difference. Result has 168 places, 912 transitions, 7322 flow [2023-08-04 07:38:02,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=7322, PETRI_PLACES=168, PETRI_TRANSITIONS=912} [2023-08-04 07:38:02,822 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 117 predicate places. [2023-08-04 07:38:02,822 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 912 transitions, 7322 flow [2023-08-04 07:38:02,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 97.3125) internal successors, (1557), 16 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:38:02,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:38:02,823 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:38:02,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 07:38:03,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-04 07:38:03,028 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:38:03,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:38:03,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1208544781, now seen corresponding path program 1 times [2023-08-04 07:38:03,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:38:03,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877042533] [2023-08-04 07:38:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:38:03,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:38:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:38:03,082 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:38:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:38:03,129 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:38:03,129 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:38:03,129 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 07:38:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-04 07:38:03,130 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:38:03,131 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2023-08-04 07:38:03,133 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 07:38:03,133 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 07:38:03,220 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 07:38:03 BasicIcfg [2023-08-04 07:38:03,223 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 07:38:03,224 INFO L158 Benchmark]: Toolchain (without parser) took 367543.84ms. Allocated memory was 490.7MB in the beginning and 15.2GB in the end (delta: 14.7GB). Free memory was 444.3MB in the beginning and 8.3GB in the end (delta: -7.9GB). Peak memory consumption was 6.8GB. Max. memory is 16.0GB. [2023-08-04 07:38:03,224 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 341.8MB. Free memory is still 294.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 07:38:03,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.29ms. Allocated memory is still 490.7MB. Free memory was 444.0MB in the beginning and 422.5MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 07:38:03,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.59ms. Allocated memory is still 490.7MB. Free memory was 422.5MB in the beginning and 420.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 07:38:03,225 INFO L158 Benchmark]: Boogie Preprocessor took 29.88ms. Allocated memory is still 490.7MB. Free memory was 420.4MB in the beginning and 418.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 07:38:03,225 INFO L158 Benchmark]: RCFGBuilder took 298.14ms. Allocated memory is still 490.7MB. Free memory was 418.6MB in the beginning and 452.1MB in the end (delta: -33.4MB). Peak memory consumption was 13.9MB. Max. memory is 16.0GB. [2023-08-04 07:38:03,225 INFO L158 Benchmark]: TraceAbstraction took 366735.93ms. Allocated memory was 490.7MB in the beginning and 15.2GB in the end (delta: 14.7GB). Free memory was 451.4MB in the beginning and 8.3GB in the end (delta: -7.9GB). Peak memory consumption was 6.9GB. Max. memory is 16.0GB. [2023-08-04 07:38:03,227 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 341.8MB. Free memory is still 294.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 426.29ms. Allocated memory is still 490.7MB. Free memory was 444.0MB in the beginning and 422.5MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.59ms. Allocated memory is still 490.7MB. Free memory was 422.5MB in the beginning and 420.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.88ms. Allocated memory is still 490.7MB. Free memory was 420.4MB in the beginning and 418.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 298.14ms. Allocated memory is still 490.7MB. Free memory was 418.6MB in the beginning and 452.1MB in the end (delta: -33.4MB). Peak memory consumption was 13.9MB. Max. memory is 16.0GB. * TraceAbstraction took 366735.93ms. Allocated memory was 490.7MB in the beginning and 15.2GB in the end (delta: 14.7GB). Free memory was 451.4MB in the beginning and 8.3GB in the end (delta: -7.9GB). Peak memory consumption was 6.9GB. 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: 1.5s, 95 PlacesBefore, 30 PlacesAfterwards, 92 TransitionsBefore, 24 TransitionsAfterwards, 1620 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 76 TotalNumberOfCompositions, 2828 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1626, independent: 1546, independent conditional: 0, independent unconditional: 1546, dependent: 80, dependent conditional: 0, dependent unconditional: 80, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 862, independent: 841, independent conditional: 0, independent unconditional: 841, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1626, independent: 705, independent conditional: 0, independent unconditional: 705, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 862, unknown conditional: 0, unknown unconditional: 862] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 63, Positive conditional cache size: 0, Positive unconditional cache size: 63, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 84 PlacesBefore, 30 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1116 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 61 TotalNumberOfCompositions, 2133 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1468, independent: 1398, independent conditional: 0, independent unconditional: 1398, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 589, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1468, independent: 820, independent conditional: 0, independent unconditional: 820, dependent: 59, dependent conditional: 0, dependent unconditional: 59, unknown: 589, unknown conditional: 0, unknown unconditional: 589] , Statistics on independence cache: Total cache size (in pairs): 69, Positive cache size: 64, Positive conditional cache size: 0, Positive unconditional cache size: 64, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 122 PlacesBefore, 51 PlacesAfterwards, 113 TransitionsBefore, 39 TransitionsAfterwards, 3996 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 47 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 82 TotalNumberOfCompositions, 8202 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3688, independent: 3539, independent conditional: 0, independent unconditional: 3539, dependent: 149, dependent conditional: 0, dependent unconditional: 149, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1952, independent: 1913, independent conditional: 0, independent unconditional: 1913, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3688, independent: 1626, independent conditional: 0, independent unconditional: 1626, dependent: 110, dependent conditional: 0, dependent unconditional: 110, unknown: 1952, unknown conditional: 0, unknown unconditional: 1952] , Statistics on independence cache: Total cache size (in pairs): 197, Positive cache size: 181, Positive conditional cache size: 0, Positive unconditional cache size: 181, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p1_EAX = 0; [L715] 0 int __unbuffered_p2_EAX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L723] 0 int z = 0; [L786] 0 pthread_t t2641[2]; [L787] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, x=0, y=0, z=0] [L787] COND TRUE 0 asdf<2 [L787] FCALL, FORK 0 pthread_create(&t2641[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2641[asdf], ((void *)0), P0, ((void *)0))=-3, t2641={5:0}, x=0, y=0, z=0] [L787] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, x=0, y=0, z=0] [L787] COND TRUE 0 asdf<2 [L727] 1 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=1] [L787] FCALL, FORK 0 pthread_create(&t2641[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2641[asdf], ((void *)0), P0, ((void *)0))=-2, t2641={5:0}, x=0, y=0, z=1] [L787] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, x=0, y=0, z=1] [L727] 2 z = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=1] [L787] COND FALSE 0 !(asdf<2) [L788] 0 pthread_t t2642[2]; [L789] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, t2642={6:0}, x=0, y=0, z=1] [L789] COND TRUE 0 asdf<2 [L789] FCALL, FORK 0 pthread_create(&t2642[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2642[asdf], ((void *)0), P1, ((void *)0))=-1, t2641={5:0}, t2642={6:0}, x=0, y=0, z=1] [L789] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, t2642={6:0}, x=0, y=0, z=1] [L789] COND TRUE 0 asdf<2 [L789] FCALL, FORK 0 pthread_create(&t2642[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2642[asdf], ((void *)0), P1, ((void *)0))=0, t2641={5:0}, t2642={6:0}, x=0, y=0, z=1] [L789] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, t2642={6:0}, x=0, y=0, z=1] [L789] COND FALSE 0 !(asdf<2) [L790] 0 pthread_t t2643[2]; [L791] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, t2642={6:0}, t2643={3:0}, x=0, y=0, z=1] [L791] COND TRUE 0 asdf<2 [L791] FCALL, FORK 0 pthread_create(&t2643[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2643[asdf], ((void *)0), P2, ((void *)0))=1, t2641={5:0}, t2642={6:0}, t2643={3:0}, x=0, y=0, z=1] [L791] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, t2642={6:0}, t2643={3:0}, x=0, y=0, z=1] [L791] COND TRUE 0 asdf<2 [L791] FCALL, FORK 0 pthread_create(&t2643[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2643[asdf], ((void *)0), P2, ((void *)0))=2, t2641={5:0}, t2642={6:0}, t2643={3:0}, x=0, y=0, z=1] [L791] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2641={5:0}, t2642={6:0}, t2643={3:0}, x=0, y=0, z=1] [L732] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=0, z=1] [L737] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L739] 1 return 0; [L744] 3 x = 1 VAL [\result={0:0}, __unbuffered_cnt=1, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0, z=1] [L737] 2 __unbuffered_cnt = __unbuffered_cnt + 1 [L739] 2 return 0; [L749] 3 __unbuffered_p1_EAX = y VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0, z=1] [L754] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L756] 3 return 0; [L791] COND FALSE 0 !(asdf<2) [L793] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L795] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L795] RET 0 assume_abort_if_not(main$tmp_guard0) [L799] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 0 && __unbuffered_p1_EAX == 0 && __unbuffered_p2_EAX == 0) [L801] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=0, z=1] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 124 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 184 IncrementalHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 22 mSDtfsCounter, 184 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=3, 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, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 77 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 10/15 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 145 locations, 4 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: 361.8s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 356.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1163 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1063 mSDsluCounter, 273 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 210 mSDsCounter, 231 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3603 IncrementalHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 231 mSolverCounterUnsat, 63 mSDtfsCounter, 3603 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 251 SyntacticMatches, 6 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1168 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7322occurred in iteration=10, InterpolantAutomatonStates: 108, 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, 1.8s InterpolantComputationTime, 411 NumberOfCodeBlocks, 411 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 481 ConstructedInterpolants, 0 QuantifiedInterpolants, 2581 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1214 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 199/222 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 1 thread instances CFG has 7 procedures, 124 locations, 4 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: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 07:38:03,259 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...