/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_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:25:46,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:25:46,477 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:25:46,481 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:25:46,481 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:25:46,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:25:46,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:25:46,500 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:25:46,501 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:25:46,501 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:25:46,502 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:25:46,502 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:25:46,502 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:25:46,503 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:25:46,503 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:25:46,503 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:25:46,504 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:25:46,504 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:25:46,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:25:46,505 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:25:46,505 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:25:46,509 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:25:46,509 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:25:46,509 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:25:46,510 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:25:46,510 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:25:46,510 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:25:46,510 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:25:46,511 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:25:46,511 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:25:46,511 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:25:46,511 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:25:46,512 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:25:46,512 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:25:46,512 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:25:46,513 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:25:46,513 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:25:46,513 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:25:46,513 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:25:46,514 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:25:46,514 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:25:46,519 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:25:46,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:25:46,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:25:46,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:25:46,805 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:25:46,807 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:25:46,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:25:47,984 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:25:48,186 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:25:48,186 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:25:48,208 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fced580b3/c0addfcaf0ae4d46b5526e3aa38d2615/FLAGc920afe06 [2023-08-04 06:25:48,219 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fced580b3/c0addfcaf0ae4d46b5526e3aa38d2615 [2023-08-04 06:25:48,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:25:48,223 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:25:48,224 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:25:48,224 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:25:48,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:25:48,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,228 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7de686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48, skipping insertion in model container [2023-08-04 06:25:48,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,276 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:25:48,408 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_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-04 06:25:48,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:25:48,611 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:25:48,625 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_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-04 06:25:48,649 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:25:48,653 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 06:25:48,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:25:48,698 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:25:48,698 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:25:48,704 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:25:48,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48 WrapperNode [2023-08-04 06:25:48,705 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:25:48,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:25:48,706 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:25:48,706 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:25:48,711 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,741 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-04 06:25:48,741 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:25:48,742 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:25:48,742 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:25:48,742 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:25:48,751 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:25:48,778 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:25:48,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:25:48,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:25:48,779 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (1/1) ... [2023-08-04 06:25:48,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:25:48,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:25:48,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 06:25:48,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 06:25:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:25:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:25:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:25:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:25:48,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:25:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:25:48,847 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:25:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:25:48,847 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:25:48,847 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:25:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:25:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:25:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:25:48,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:25:48,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:25:48,849 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 06:25:48,957 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:25:48,959 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:25:49,119 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:25:49,125 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:25:49,125 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 06:25:49,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:25:49 BoogieIcfgContainer [2023-08-04 06:25:49,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:25:49,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:25:49,129 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:25:49,132 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:25:49,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:25:48" (1/3) ... [2023-08-04 06:25:49,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b93d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:25:49, skipping insertion in model container [2023-08-04 06:25:49,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:25:48" (2/3) ... [2023-08-04 06:25:49,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b93d026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:25:49, skipping insertion in model container [2023-08-04 06:25:49,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:25:49" (3/3) ... [2023-08-04 06:25:49,134 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe000_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 06:25:49,141 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:25:49,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:25:49,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 06:25:49,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:25:49,201 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:25:49,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 06:25:49,339 INFO L124 PetriNetUnfolderBase]: 30/414 cut-off events. [2023-08-04 06:25:49,339 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:25:49,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 414 events. 30/414 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1842 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 243. Up to 16 conditions per place. [2023-08-04 06:25:49,347 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 06:25:49,352 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 91 transitions, 191 flow [2023-08-04 06:25:49,355 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:25:49,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 91 transitions, 191 flow [2023-08-04 06:25:49,366 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 91 transitions, 191 flow [2023-08-04 06:25:49,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 91 transitions, 191 flow [2023-08-04 06:25:49,443 INFO L124 PetriNetUnfolderBase]: 22/311 cut-off events. [2023-08-04 06:25:49,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:25:49,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 311 events. 22/311 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1251 event pairs, 0 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 189. Up to 16 conditions per place. [2023-08-04 06:25:49,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 1620 [2023-08-04 06:25:51,458 INFO L134 LiptonReduction]: Checked pairs total: 2939 [2023-08-04 06:25:51,458 INFO L136 LiptonReduction]: Total number of compositions: 77 [2023-08-04 06:25:51,471 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:25:51,476 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;@12c85962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:25:51,476 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 06:25:51,480 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:25:51,480 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-04 06:25:51,480 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:25:51,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:51,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:25:51,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:51,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:51,485 INFO L85 PathProgramCache]: Analyzing trace with hash 357342394, now seen corresponding path program 1 times [2023-08-04 06:25:51,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:51,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044927615] [2023-08-04 06:25:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:51,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:25:51,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:51,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044927615] [2023-08-04 06:25:51,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044927615] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:25:51,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:25:51,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:25:51,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007300620] [2023-08-04 06:25:51,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:25:51,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:25:51,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:51,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:25:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:25:51,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 183 [2023-08-04 06:25:51,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:51,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:51,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 183 [2023-08-04 06:25:51,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:25:51,886 INFO L124 PetriNetUnfolderBase]: 400/751 cut-off events. [2023-08-04 06:25:51,887 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 06:25:51,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1460 conditions, 751 events. 400/751 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3807 event pairs, 222 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 06:25:51,893 INFO L140 encePairwiseOnDemand]: 179/183 looper letters, 20 selfloop transitions, 2 changer transitions 1/26 dead transitions. [2023-08-04 06:25:51,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 107 flow [2023-08-04 06:25:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:25:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:25:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-08-04 06:25:51,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5537340619307832 [2023-08-04 06:25:51,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-08-04 06:25:51,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-08-04 06:25:51,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:51,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-08-04 06:25:51,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:51,918 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 06:25:51,918 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 06:25:51,920 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 57 flow. Second operand 3 states and 304 transitions. [2023-08-04 06:25:51,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 107 flow [2023-08-04 06:25:51,923 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 06:25:51,924 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 63 flow [2023-08-04 06:25:51,925 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 06:25:51,928 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 06:25:51,928 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 63 flow [2023-08-04 06:25:51,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:51,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:51,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:25:51,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:25:51,930 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:51,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:51,930 INFO L85 PathProgramCache]: Analyzing trace with hash 646482320, now seen corresponding path program 1 times [2023-08-04 06:25:51,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:51,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485519837] [2023-08-04 06:25:51,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:51,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:25:52,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:52,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485519837] [2023-08-04 06:25:52,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485519837] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:25:52,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30392246] [2023-08-04 06:25:52,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:52,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:52,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:25:52,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:25:52,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 06:25:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:52,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:25:52,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:25:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:25:52,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:25:52,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30392246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:25:52,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:25:52,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:25:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797417837] [2023-08-04 06:25:52,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:25:52,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:25:52,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:52,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:25:52,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:25:52,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 183 [2023-08-04 06:25:52,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 63 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 06:25:52,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:52,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 183 [2023-08-04 06:25:52,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:25:52,248 INFO L124 PetriNetUnfolderBase]: 338/604 cut-off events. [2023-08-04 06:25:52,248 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 06:25:52,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 604 events. 338/604 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2739 event pairs, 262 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 06:25:52,252 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 22 selfloop transitions, 2 changer transitions 1/28 dead transitions. [2023-08-04 06:25:52,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 123 flow [2023-08-04 06:25:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:25:52,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:25:52,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-08-04 06:25:52,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2023-08-04 06:25:52,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-08-04 06:25:52,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-08-04 06:25:52,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:52,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-08-04 06:25:52,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:52,263 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 06:25:52,264 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 06:25:52,264 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 63 flow. Second operand 3 states and 305 transitions. [2023-08-04 06:25:52,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 123 flow [2023-08-04 06:25:52,265 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 06:25:52,265 INFO L231 Difference]: Finished difference. Result has 34 places, 23 transitions, 67 flow [2023-08-04 06:25:52,266 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 06:25:52,267 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2023-08-04 06:25:52,267 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 23 transitions, 67 flow [2023-08-04 06:25:52,267 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 06:25:52,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:52,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:25:52,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 06:25:52,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:52,474 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:52,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:52,474 INFO L85 PathProgramCache]: Analyzing trace with hash 538820375, now seen corresponding path program 1 times [2023-08-04 06:25:52,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:52,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136408116] [2023-08-04 06:25:52,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:52,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:52,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:25:52,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:52,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136408116] [2023-08-04 06:25:52,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136408116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:25:52,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346030945] [2023-08-04 06:25:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:52,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:52,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:25:52,590 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:25:52,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 06:25:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:52,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:25:52,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:25:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:25:52,676 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:25:52,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346030945] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:25:52,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:25:52,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:25:52,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345316649] [2023-08-04 06:25:52,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:25:52,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:25:52,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:25:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:25:52,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 183 [2023-08-04 06:25:52,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 23 transitions, 67 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 06:25:52,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:52,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 183 [2023-08-04 06:25:52,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:25:52,790 INFO L124 PetriNetUnfolderBase]: 314/532 cut-off events. [2023-08-04 06:25:52,790 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 06:25:52,791 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 2342 event pairs, 182 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 06:25:52,793 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 24 selfloop transitions, 2 changer transitions 1/30 dead transitions. [2023-08-04 06:25:52,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 135 flow [2023-08-04 06:25:52,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:25:52,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:25:52,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-08-04 06:25:52,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5591985428051002 [2023-08-04 06:25:52,796 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-08-04 06:25:52,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-08-04 06:25:52,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:52,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-08-04 06:25:52,798 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 06:25:52,799 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 06:25:52,799 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 06:25:52,800 INFO L175 Difference]: Start difference. First operand has 34 places, 23 transitions, 67 flow. Second operand 3 states and 307 transitions. [2023-08-04 06:25:52,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 135 flow [2023-08-04 06:25:52,801 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 06:25:52,801 INFO L231 Difference]: Finished difference. Result has 35 places, 23 transitions, 71 flow [2023-08-04 06:25:52,802 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 06:25:52,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 5 predicate places. [2023-08-04 06:25:52,803 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 23 transitions, 71 flow [2023-08-04 06:25:52,803 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 06:25:52,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:52,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:25:52,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:25:53,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 06:25:53,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:53,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:53,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1691162617, now seen corresponding path program 1 times [2023-08-04 06:25:53,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:53,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577314149] [2023-08-04 06:25:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:53,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:25:53,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:53,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577314149] [2023-08-04 06:25:53,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577314149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:25:53,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084873191] [2023-08-04 06:25:53,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:53,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:53,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:25:53,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:25:53,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 06:25:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:53,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:25:53,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:25:53,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:25:53,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:25:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:25:53,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084873191] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:25:53,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:25:53,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:25:53,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859006784] [2023-08-04 06:25:53,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:25:53,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:25:53,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:25:53,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:25:53,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 183 [2023-08-04 06:25:53,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 23 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:53,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:53,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 183 [2023-08-04 06:25:53,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:25:53,278 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:25:53,278 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:25:53,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 06:25:53,278 INFO L140 encePairwiseOnDemand]: 180/183 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:25:53,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 06:25:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:25:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:25:53,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 378 transitions. [2023-08-04 06:25:53,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163934426229508 [2023-08-04 06:25:53,286 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 378 transitions. [2023-08-04 06:25:53,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 378 transitions. [2023-08-04 06:25:53,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:53,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 378 transitions. [2023-08-04 06:25:53,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.5) internal successors, (378), 4 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 06:25:53,289 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 06:25:53,290 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 06:25:53,290 INFO L175 Difference]: Start difference. First operand has 35 places, 23 transitions, 71 flow. Second operand 4 states and 378 transitions. [2023-08-04 06:25:53,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 06:25:53,290 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 06:25:53,291 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 06:25:53,291 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 06:25:53,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -12 predicate places. [2023-08-04 06:25:53,292 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 06:25:53,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.6) internal successors, (478), 5 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:53,295 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 06:25:53,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 06:25:53,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:53,503 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:25:53,504 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 06:25:53,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 06:25:53,534 INFO L124 PetriNetUnfolderBase]: 30/414 cut-off events. [2023-08-04 06:25:53,534 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:25:53,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439 conditions, 414 events. 30/414 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1842 event pairs, 0 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 243. Up to 16 conditions per place. [2023-08-04 06:25:53,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 106 transitions, 227 flow [2023-08-04 06:25:53,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 78 transitions, 171 flow [2023-08-04 06:25:53,536 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:25:53,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 83 places, 78 transitions, 171 flow [2023-08-04 06:25:53,536 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 83 places, 78 transitions, 171 flow [2023-08-04 06:25:53,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 83 places, 78 transitions, 171 flow [2023-08-04 06:25:53,550 INFO L124 PetriNetUnfolderBase]: 6/190 cut-off events. [2023-08-04 06:25:53,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:25:53,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 190 events. 6/190 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 585 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-04 06:25:53,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2023-08-04 06:25:54,954 INFO L134 LiptonReduction]: Checked pairs total: 2194 [2023-08-04 06:25:54,954 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-04 06:25:54,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:25:54,957 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;@12c85962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:25:54,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:25:54,959 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:25:54,959 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-08-04 06:25:54,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:25:54,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:54,959 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:25:54,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:25:54,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -61867689, now seen corresponding path program 1 times [2023-08-04 06:25:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805154997] [2023-08-04 06:25:54,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:54,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:25:54,973 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:25:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:25:55,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:25:55,004 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:25:55,004 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 06:25:55,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 06:25:55,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 06:25:55,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:25:55,005 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:25:55,005 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:25:55,006 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:25:55,006 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:25:55,023 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:25:55,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 127 transitions, 290 flow [2023-08-04 06:25:55,132 INFO L124 PetriNetUnfolderBase]: 93/1304 cut-off events. [2023-08-04 06:25:55,132 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:25:55,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 1304 events. 93/1304 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8852 event pairs, 0 based on Foata normal form. 0/1145 useless extension candidates. Maximal degree in co-relation 945. Up to 54 conditions per place. [2023-08-04 06:25:55,136 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 127 transitions, 290 flow [2023-08-04 06:25:55,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 112 transitions, 248 flow [2023-08-04 06:25:55,139 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:25:55,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 112 transitions, 248 flow [2023-08-04 06:25:55,139 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 112 transitions, 248 flow [2023-08-04 06:25:55,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 112 transitions, 248 flow [2023-08-04 06:25:55,210 INFO L124 PetriNetUnfolderBase]: 66/967 cut-off events. [2023-08-04 06:25:55,210 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 06:25:55,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 967 events. 66/967 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5981 event pairs, 0 based on Foata normal form. 0/862 useless extension candidates. Maximal degree in co-relation 717. Up to 54 conditions per place. [2023-08-04 06:25:55,244 INFO L119 LiptonReduction]: Number of co-enabled transitions 3996 [2023-08-04 06:25:56,912 INFO L134 LiptonReduction]: Checked pairs total: 8213 [2023-08-04 06:25:56,912 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-04 06:25:56,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:25:56,915 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;@12c85962, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:25:56,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 06:25:56,917 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:25:56,917 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 06:25:56,917 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:25:56,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:56,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 06:25:56,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:56,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:56,918 INFO L85 PathProgramCache]: Analyzing trace with hash 635137405, now seen corresponding path program 1 times [2023-08-04 06:25:56,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:56,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010528562] [2023-08-04 06:25:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:56,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:25:56,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:56,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010528562] [2023-08-04 06:25:56,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010528562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:25:56,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:25:56,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:25:56,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394518990] [2023-08-04 06:25:56,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:25:56,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:25:56,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:25:56,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:25:56,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-04 06:25:56,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:56,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:56,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-04 06:25:56,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:00,727 INFO L124 PetriNetUnfolderBase]: 33046/47771 cut-off events. [2023-08-04 06:26:00,727 INFO L125 PetriNetUnfolderBase]: For 1425/1425 co-relation queries the response was YES. [2023-08-04 06:26:00,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93162 conditions, 47771 events. 33046/47771 cut-off events. For 1425/1425 co-relation queries the response was YES. Maximal size of possible extension queue 1625. Compared 334506 event pairs, 26064 based on Foata normal form. 0/45422 useless extension candidates. Maximal degree in co-relation 26554. Up to 43520 conditions per place. [2023-08-04 06:26:01,049 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 31 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-04 06:26:01,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 174 flow [2023-08-04 06:26:01,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:26:01,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:26:01,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-08-04 06:26:01,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5841269841269842 [2023-08-04 06:26:01,058 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-08-04 06:26:01,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-08-04 06:26:01,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:01,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-08-04 06:26:01,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:01,061 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 06:26:01,062 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 06:26:01,062 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 102 flow. Second operand 3 states and 368 transitions. [2023-08-04 06:26:01,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 174 flow [2023-08-04 06:26:01,064 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 06:26:01,065 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 112 flow [2023-08-04 06:26:01,065 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 06:26:01,067 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-04 06:26:01,068 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 112 flow [2023-08-04 06:26:01,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:01,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:01,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:26:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 06:26:01,068 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:01,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:01,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1304025778, now seen corresponding path program 1 times [2023-08-04 06:26:01,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:01,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102618134] [2023-08-04 06:26:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:01,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:01,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 06:26:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102618134] [2023-08-04 06:26:01,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102618134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:01,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205856385] [2023-08-04 06:26:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:01,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:01,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:01,121 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 06:26:01,123 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 06:26:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:01,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:26:01,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:26:01,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:26:01,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205856385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:26:01,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:26:01,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:26:01,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220538295] [2023-08-04 06:26:01,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:26:01,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:26:01,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:01,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:26:01,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:26:01,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-04 06:26:01,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 112 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 06:26:01,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:01,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-04 06:26:01,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:03,856 INFO L124 PetriNetUnfolderBase]: 31406/44873 cut-off events. [2023-08-04 06:26:03,856 INFO L125 PetriNetUnfolderBase]: For 1143/1143 co-relation queries the response was YES. [2023-08-04 06:26:03,944 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 1588. Compared 307341 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 06:26:04,113 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 36 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-04 06:26:04,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 204 flow [2023-08-04 06:26:04,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:26:04,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:26:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 371 transitions. [2023-08-04 06:26:04,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5888888888888889 [2023-08-04 06:26:04,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 371 transitions. [2023-08-04 06:26:04,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 371 transitions. [2023-08-04 06:26:04,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:04,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 371 transitions. [2023-08-04 06:26:04,117 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 06:26:04,118 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 06:26:04,119 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 06:26:04,119 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 112 flow. Second operand 3 states and 371 transitions. [2023-08-04 06:26:04,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 204 flow [2023-08-04 06:26:04,120 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 06:26:04,121 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 122 flow [2023-08-04 06:26:04,121 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 06:26:04,121 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-04 06:26:04,122 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 122 flow [2023-08-04 06:26:04,122 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 06:26:04,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:04,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:26:04,131 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 06:26:04,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:04,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:04,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash -226714101, now seen corresponding path program 1 times [2023-08-04 06:26:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361763627] [2023-08-04 06:26:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:04,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 06:26:04,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:04,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361763627] [2023-08-04 06:26:04,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361763627] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:04,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185548279] [2023-08-04 06:26:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:04,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:04,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:04,384 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 06:26:04,393 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 06:26:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:04,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:26:04,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:26:04,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:26:04,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185548279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:26:04,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:26:04,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:26:04,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151790614] [2023-08-04 06:26:04,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:26:04,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:26:04,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:04,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:26:04,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:26:04,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 210 [2023-08-04 06:26:04,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 122 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 06:26:04,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:04,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 210 [2023-08-04 06:26:04,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:07,038 INFO L124 PetriNetUnfolderBase]: 30734/43358 cut-off events. [2023-08-04 06:26:07,038 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-08-04 06:26:07,140 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 290758 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 06:26:07,311 INFO L140 encePairwiseOnDemand]: 207/210 looper letters, 41 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-04 06:26:07,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 232 flow [2023-08-04 06:26:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:26:07,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:26:07,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-04 06:26:07,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2023-08-04 06:26:07,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-04 06:26:07,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-04 06:26:07,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:07,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-04 06:26:07,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:07,323 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 06:26:07,323 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 06:26:07,323 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 122 flow. Second operand 3 states and 375 transitions. [2023-08-04 06:26:07,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 232 flow [2023-08-04 06:26:07,326 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 06:26:07,327 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 132 flow [2023-08-04 06:26:07,327 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 06:26:07,328 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-04 06:26:07,329 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 132 flow [2023-08-04 06:26:07,329 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 06:26:07,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:07,329 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 06:26:07,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 06:26:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:07,538 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:07,538 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -274389445, now seen corresponding path program 1 times [2023-08-04 06:26:07,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:07,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271650678] [2023-08-04 06:26:07,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:07,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:07,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:26:07,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:07,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271650678] [2023-08-04 06:26:07,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271650678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:07,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071227336] [2023-08-04 06:26:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:07,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:07,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:07,604 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 06:26:07,629 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 06:26:07,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:07,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:26:07,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:26:07,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:26:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:26:07,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071227336] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:26:07,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:26:07,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-04 06:26:07,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167012071] [2023-08-04 06:26:07,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:26:07,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:26:07,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:07,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:26:07,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:26:07,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-04 06:26:07,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:07,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:07,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-04 06:26:07,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:09,895 INFO L124 PetriNetUnfolderBase]: 24232/33893 cut-off events. [2023-08-04 06:26:09,896 INFO L125 PetriNetUnfolderBase]: For 3624/3624 co-relation queries the response was YES. [2023-08-04 06:26:09,994 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 214196 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 06:26:10,133 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 36 selfloop transitions, 3 changer transitions 1/49 dead transitions. [2023-08-04 06:26:10,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 228 flow [2023-08-04 06:26:10,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:26:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:26:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 479 transitions. [2023-08-04 06:26:10,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5702380952380952 [2023-08-04 06:26:10,136 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 479 transitions. [2023-08-04 06:26:10,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 479 transitions. [2023-08-04 06:26:10,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:10,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 479 transitions. [2023-08-04 06:26:10,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:10,139 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 06:26:10,139 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 06:26:10,139 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 132 flow. Second operand 4 states and 479 transitions. [2023-08-04 06:26:10,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 228 flow [2023-08-04 06:26:10,145 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 06:26:10,146 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 144 flow [2023-08-04 06:26:10,146 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 06:26:10,147 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-04 06:26:10,148 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 144 flow [2023-08-04 06:26:10,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:10,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:10,148 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 06:26:10,159 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 06:26:10,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:10,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:10,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:10,354 INFO L85 PathProgramCache]: Analyzing trace with hash -376891699, now seen corresponding path program 1 times [2023-08-04 06:26:10,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:10,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662000470] [2023-08-04 06:26:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:10,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:10,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:10,412 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 06:26:10,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662000470] [2023-08-04 06:26:10,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662000470] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:10,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832616977] [2023-08-04 06:26:10,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:10,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:10,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:10,415 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 06:26:10,417 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 06:26:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:10,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:26:10,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:10,513 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 06:26:10,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:26:10,531 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 06:26:10,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832616977] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:26:10,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:26:10,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:26:10,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593838436] [2023-08-04 06:26:10,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:26:10,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:26:10,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:10,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:26:10,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:26:10,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-04 06:26:10,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:10,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:10,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-04 06:26:10,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:12,218 INFO L124 PetriNetUnfolderBase]: 19198/26485 cut-off events. [2023-08-04 06:26:12,218 INFO L125 PetriNetUnfolderBase]: For 2439/2439 co-relation queries the response was YES. [2023-08-04 06:26:12,258 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 160124 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 06:26:12,341 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 44 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2023-08-04 06:26:12,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 272 flow [2023-08-04 06:26:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:26:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:26:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 487 transitions. [2023-08-04 06:26:12,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5797619047619048 [2023-08-04 06:26:12,344 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 487 transitions. [2023-08-04 06:26:12,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 487 transitions. [2023-08-04 06:26:12,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:12,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 487 transitions. [2023-08-04 06:26:12,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:12,347 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 06:26:12,347 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 06:26:12,347 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 144 flow. Second operand 4 states and 487 transitions. [2023-08-04 06:26:12,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 272 flow [2023-08-04 06:26:12,350 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 06:26:12,352 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 151 flow [2023-08-04 06:26:12,352 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 06:26:12,352 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-04 06:26:12,352 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 151 flow [2023-08-04 06:26:12,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.8) internal successors, (569), 5 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:12,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:12,353 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 06:26:12,363 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 06:26:12,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:12,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:12,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:12,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1490527575, now seen corresponding path program 1 times [2023-08-04 06:26:12,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:12,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430170605] [2023-08-04 06:26:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:12,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:12,612 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 06:26:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430170605] [2023-08-04 06:26:12,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430170605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093786317] [2023-08-04 06:26:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:12,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:12,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:12,614 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 06:26:12,617 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 06:26:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:12,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:26:12,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:12,724 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 06:26:12,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:26:12,737 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 06:26:12,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093786317] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:26:12,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:26:12,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:26:12,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945324731] [2023-08-04 06:26:12,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:26:12,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:26:12,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:12,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:26:12,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:26:12,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 210 [2023-08-04 06:26:12,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:12,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:12,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 210 [2023-08-04 06:26:12,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:14,186 INFO L124 PetriNetUnfolderBase]: 17362/23209 cut-off events. [2023-08-04 06:26:14,187 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-04 06:26:14,222 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 128303 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 06:26:14,304 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 52 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2023-08-04 06:26:14,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 311 flow [2023-08-04 06:26:14,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:26:14,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:26:14,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-08-04 06:26:14,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2023-08-04 06:26:14,307 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-08-04 06:26:14,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-08-04 06:26:14,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:14,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-08-04 06:26:14,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:14,310 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 06:26:14,311 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 06:26:14,311 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 151 flow. Second operand 4 states and 495 transitions. [2023-08-04 06:26:14,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 311 flow [2023-08-04 06:26:14,314 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 06:26:14,315 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 158 flow [2023-08-04 06:26:14,315 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 06:26:14,315 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-04 06:26:14,315 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 158 flow [2023-08-04 06:26:14,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:14,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:14,316 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 06:26:14,326 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 06:26:14,523 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,SelfDestructingSolverStorable10 [2023-08-04 06:26:14,523 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:14,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:14,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1194099878, now seen corresponding path program 1 times [2023-08-04 06:26:14,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:14,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291852276] [2023-08-04 06:26:14,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:14,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:14,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:14,713 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 06:26:14,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291852276] [2023-08-04 06:26:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291852276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:26:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:26:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:26:14,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118304797] [2023-08-04 06:26:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:26:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:26:14,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:14,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:26:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:26:14,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 210 [2023-08-04 06:26:14,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:14,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:14,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 210 [2023-08-04 06:26:14,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:21,318 INFO L124 PetriNetUnfolderBase]: 80743/103680 cut-off events. [2023-08-04 06:26:21,318 INFO L125 PetriNetUnfolderBase]: For 49807/49807 co-relation queries the response was YES. [2023-08-04 06:26:21,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235698 conditions, 103680 events. 80743/103680 cut-off events. For 49807/49807 co-relation queries the response was YES. Maximal size of possible extension queue 3790. Compared 609700 event pairs, 32704 based on Foata normal form. 1981/105586 useless extension candidates. Maximal degree in co-relation 235622. Up to 61002 conditions per place. [2023-08-04 06:26:21,991 INFO L140 encePairwiseOnDemand]: 198/210 looper letters, 58 selfloop transitions, 11 changer transitions 0/74 dead transitions. [2023-08-04 06:26:21,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 432 flow [2023-08-04 06:26:21,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:26:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:26:21,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-04 06:26:21,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5825396825396826 [2023-08-04 06:26:21,993 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-04 06:26:21,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-04 06:26:21,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:21,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-04 06:26:21,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:21,995 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 06:26:21,995 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 06:26:21,996 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 158 flow. Second operand 3 states and 367 transitions. [2023-08-04 06:26:21,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 432 flow [2023-08-04 06:26:22,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 418 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 06:26:22,114 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 237 flow [2023-08-04 06:26:22,114 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=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=237, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-08-04 06:26:22,115 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2023-08-04 06:26:22,115 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 237 flow [2023-08-04 06:26:22,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:22,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:22,115 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] [2023-08-04 06:26:22,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 06:26:22,116 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:22,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:22,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1637608683, now seen corresponding path program 1 times [2023-08-04 06:26:22,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:22,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298222907] [2023-08-04 06:26:22,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:22,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:22,253 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 06:26:22,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:22,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298222907] [2023-08-04 06:26:22,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298222907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:26:22,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:26:22,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:26:22,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767807313] [2023-08-04 06:26:22,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:26:22,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:26:22,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:22,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:26:22,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:26:22,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 210 [2023-08-04 06:26:22,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 237 flow. Second operand has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:22,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:22,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 210 [2023-08-04 06:26:22,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:28,783 INFO L124 PetriNetUnfolderBase]: 79216/101108 cut-off events. [2023-08-04 06:26:28,783 INFO L125 PetriNetUnfolderBase]: For 76986/76986 co-relation queries the response was YES. [2023-08-04 06:26:29,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300874 conditions, 101108 events. 79216/101108 cut-off events. For 76986/76986 co-relation queries the response was YES. Maximal size of possible extension queue 3678. Compared 588716 event pairs, 6699 based on Foata normal form. 140/101220 useless extension candidates. Maximal degree in co-relation 118122. Up to 56566 conditions per place. [2023-08-04 06:26:29,431 INFO L140 encePairwiseOnDemand]: 198/210 looper letters, 77 selfloop transitions, 19 changer transitions 0/101 dead transitions. [2023-08-04 06:26:29,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 101 transitions, 669 flow [2023-08-04 06:26:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:26:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:26:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 484 transitions. [2023-08-04 06:26:29,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5761904761904761 [2023-08-04 06:26:29,434 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 484 transitions. [2023-08-04 06:26:29,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 484 transitions. [2023-08-04 06:26:29,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:29,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 484 transitions. [2023-08-04 06:26:29,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:29,436 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 06:26:29,437 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 06:26:29,437 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 237 flow. Second operand 4 states and 484 transitions. [2023-08-04 06:26:29,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 101 transitions, 669 flow [2023-08-04 06:26:29,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 627 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:26:29,563 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 369 flow [2023-08-04 06:26:29,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=369, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-04 06:26:29,564 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2023-08-04 06:26:29,564 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 369 flow [2023-08-04 06:26:29,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:29,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:29,565 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] [2023-08-04 06:26:29,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 06:26:29,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:29,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2000990079, now seen corresponding path program 1 times [2023-08-04 06:26:29,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:29,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614177915] [2023-08-04 06:26:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:29,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:29,750 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 06:26:29,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:29,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614177915] [2023-08-04 06:26:29,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614177915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:26:29,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:26:29,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 06:26:29,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530409902] [2023-08-04 06:26:29,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:26:29,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:26:29,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:29,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:26:29,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:26:29,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 210 [2023-08-04 06:26:29,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:29,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:29,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 210 [2023-08-04 06:26:29,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:35,224 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([604] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= |v_P2Thread2of2ForFork2_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_82 1) v_~__unbuffered_cnt~0_81)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_82} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_81} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][100], [P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, 81#P2EXITtrue, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 119#P1EXITtrue, 94#L726true, Black: 448#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 614#true, 26#L744true, Black: 608#(= ~y~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, 117#L783-6true, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P0Thread1of2ForFork0InUse, 55#L759true]) [2023-08-04 06:26:35,224 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2023-08-04 06:26:35,225 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 06:26:35,225 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 06:26:35,225 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 06:26:36,055 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([604] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= |v_P2Thread2of2ForFork2_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_82 1) v_~__unbuffered_cnt~0_81)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_82} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_81} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][100], [P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, 81#P2EXITtrue, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 119#P1EXITtrue, Black: 448#true, Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 614#true, 26#L744true, Black: 608#(= ~y~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, 117#L783-6true, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 11#P0EXITtrue, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P0Thread1of2ForFork0InUse, 55#L759true]) [2023-08-04 06:26:36,056 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-08-04 06:26:36,056 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:36,057 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:36,057 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:36,060 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([604] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= |v_P2Thread2of2ForFork2_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_82 1) v_~__unbuffered_cnt~0_81)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_82} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_81} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][100], [P0Thread2of2ForFork0InUse, 614#true, P1Thread1of2ForFork1InUse, 26#L744true, Black: 608#(= ~y~0 0), P1Thread2of2ForFork1InUse, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, P2Thread1of2ForFork2InUse, 88#L783-11true, P2Thread2of2ForFork2InUse, 107#P0EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 81#P2EXITtrue, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 94#L726true, 119#P1EXITtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P0Thread1of2ForFork0InUse, 55#L759true]) [2023-08-04 06:26:36,061 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-08-04 06:26:36,061 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:36,061 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:36,061 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:36,221 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([604] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= |v_P2Thread2of2ForFork2_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_82 1) v_~__unbuffered_cnt~0_81)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_82} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_81} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][100], [P0Thread2of2ForFork0InUse, 614#true, P1Thread1of2ForFork1InUse, Black: 608#(= ~y~0 0), 26#L744true, P1Thread2of2ForFork1InUse, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 81#P2EXITtrue, 94#L726true, 119#P1EXITtrue, 124#L788true, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P0Thread1of2ForFork0InUse, 55#L759true]) [2023-08-04 06:26:36,221 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 06:26:36,221 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:36,222 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:36,222 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:36,222 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([632] L788-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= (ite (= (ite (not (and (= v_~__unbuffered_p2_EAX~0_48 1) (= v_~__unbuffered_p1_EAX~0_42 1) (= 2 v_~__unbuffered_p0_EAX~0_42) (= v_~y~0_55 2))) 1 0) 0) 0 1) v_~main$tmp_guard1~0_49) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_36|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26| (mod v_~main$tmp_guard1~0_49 256)) (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_36| 0)) InVars {~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_42, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_42, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_48, ~y~0=v_~y~0_55} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_36|, ~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_42, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26|, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_42, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_49, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_48, ~y~0=v_~y~0_55} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][103], [P0Thread2of2ForFork0InUse, 614#true, P1Thread1of2ForFork1InUse, Black: 608#(= ~y~0 0), 26#L744true, P1Thread2of2ForFork1InUse, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 94#L726true, 119#P1EXITtrue, 69#L759true, 112#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P0Thread1of2ForFork0InUse, 55#L759true]) [2023-08-04 06:26:36,222 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 06:26:36,222 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:36,222 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:36,222 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:36,308 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([604] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= |v_P2Thread2of2ForFork2_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_82 1) v_~__unbuffered_cnt~0_81)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_82} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_81} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][100], [P0Thread2of2ForFork0InUse, 614#true, P1Thread1of2ForFork1InUse, 26#L744true, Black: 608#(= ~y~0 0), P1Thread2of2ForFork1InUse, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, P2Thread1of2ForFork2InUse, 88#L783-11true, P2Thread2of2ForFork2InUse, 107#P0EXITtrue, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 81#P2EXITtrue, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 119#P1EXITtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 11#P0EXITtrue, Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P0Thread1of2ForFork0InUse, 55#L759true]) [2023-08-04 06:26:36,309 INFO L294 olderBase$Statistics]: this new event has 43 ancestors and is cut-off event [2023-08-04 06:26:36,309 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-04 06:26:36,309 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-04 06:26:36,309 INFO L297 olderBase$Statistics]: existing Event has 43 ancestors and is cut-off event [2023-08-04 06:26:36,348 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([604] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= |v_P2Thread2of2ForFork2_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_82 1) v_~__unbuffered_cnt~0_81)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_82} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_81} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][100], [P0Thread2of2ForFork0InUse, 614#true, P1Thread1of2ForFork1InUse, Black: 608#(= ~y~0 0), 26#L744true, P1Thread2of2ForFork1InUse, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 81#P2EXITtrue, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 119#P1EXITtrue, 124#L788true, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 11#P0EXITtrue, Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P0Thread1of2ForFork0InUse, 55#L759true]) [2023-08-04 06:26:36,348 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-04 06:26:36,348 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:36,349 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:36,349 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:36,349 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([632] L788-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= (ite (= (ite (not (and (= v_~__unbuffered_p2_EAX~0_48 1) (= v_~__unbuffered_p1_EAX~0_42 1) (= 2 v_~__unbuffered_p0_EAX~0_42) (= v_~y~0_55 2))) 1 0) 0) 0 1) v_~main$tmp_guard1~0_49) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_36|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26| (mod v_~main$tmp_guard1~0_49 256)) (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_36| 0)) InVars {~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_42, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_42, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_48, ~y~0=v_~y~0_55} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_36|, ~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_42, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26|, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_42, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_49, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_48, ~y~0=v_~y~0_55} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][103], [P0Thread2of2ForFork0InUse, 614#true, P1Thread1of2ForFork1InUse, 26#L744true, Black: 608#(= ~y~0 0), P1Thread2of2ForFork1InUse, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 119#P1EXITtrue, 69#L759true, 112#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 11#P0EXITtrue, Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P0Thread1of2ForFork0InUse, 55#L759true]) [2023-08-04 06:26:36,349 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-04 06:26:36,349 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:36,349 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:36,349 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:36,370 INFO L124 PetriNetUnfolderBase]: 67515/87777 cut-off events. [2023-08-04 06:26:36,370 INFO L125 PetriNetUnfolderBase]: For 119947/125103 co-relation queries the response was YES. [2023-08-04 06:26:36,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276168 conditions, 87777 events. 67515/87777 cut-off events. For 119947/125103 co-relation queries the response was YES. Maximal size of possible extension queue 3678. Compared 534689 event pairs, 24853 based on Foata normal form. 2750/84362 useless extension candidates. Maximal degree in co-relation 276081. Up to 72547 conditions per place. [2023-08-04 06:26:37,108 INFO L140 encePairwiseOnDemand]: 206/210 looper letters, 76 selfloop transitions, 7 changer transitions 0/104 dead transitions. [2023-08-04 06:26:37,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 104 transitions, 748 flow [2023-08-04 06:26:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:26:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:26:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 390 transitions. [2023-08-04 06:26:37,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2023-08-04 06:26:37,110 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 390 transitions. [2023-08-04 06:26:37,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 390 transitions. [2023-08-04 06:26:37,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:37,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 390 transitions. [2023-08-04 06:26:37,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:37,112 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 06:26:37,113 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 06:26:37,113 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 369 flow. Second operand 3 states and 390 transitions. [2023-08-04 06:26:37,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 104 transitions, 748 flow [2023-08-04 06:26:37,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 104 transitions, 748 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:26:37,408 INFO L231 Difference]: Finished difference. Result has 74 places, 71 transitions, 440 flow [2023-08-04 06:26:37,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=74, PETRI_TRANSITIONS=71} [2023-08-04 06:26:37,409 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2023-08-04 06:26:37,409 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 71 transitions, 440 flow [2023-08-04 06:26:37,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:37,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:37,409 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 06:26:37,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 06:26:37,409 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:37,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:37,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1901102708, now seen corresponding path program 1 times [2023-08-04 06:26:37,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:37,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433718829] [2023-08-04 06:26:37,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:37,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:37,527 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 06:26:37,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:37,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433718829] [2023-08-04 06:26:37,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433718829] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:37,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279092946] [2023-08-04 06:26:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:37,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:37,529 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 06:26:37,536 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 06:26:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:37,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 06:26:37,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:37,672 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 06:26:37,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:26:37,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279092946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:26:37,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:26:37,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-04 06:26:37,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683911373] [2023-08-04 06:26:37,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:26:37,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:26:37,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:37,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:26:37,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:26:37,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 210 [2023-08-04 06:26:37,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 71 transitions, 440 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:37,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:37,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 210 [2023-08-04 06:26:37,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:43,042 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([584] $Ultimate##0-->L756: Formula: (and (= v_P2Thread1of2ForFork2_~arg.base_5 |v_P2Thread1of2ForFork2_#in~arg.base_5|) (= |v_P2Thread1of2ForFork2_#in~arg.offset_5| v_P2Thread1of2ForFork2_~arg.offset_5) (= v_~y~0_39 v_~__unbuffered_p2_EAX~0_36)) InVars {P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~y~0=v_~y~0_39} OutVars{P2Thread1of2ForFork2_#in~arg.offset=|v_P2Thread1of2ForFork2_#in~arg.offset_5|, P2Thread1of2ForFork2_~arg.base=v_P2Thread1of2ForFork2_~arg.base_5, P2Thread1of2ForFork2_#in~arg.base=|v_P2Thread1of2ForFork2_#in~arg.base_5|, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_36, ~y~0=v_~y~0_39, P2Thread1of2ForFork2_~arg.offset=v_P2Thread1of2ForFork2_~arg.offset_5} AuxVars[] AssignedVars[P2Thread1of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread1of2ForFork2_~arg.offset][88], [P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, 619#true, 95#L756true, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 69#L759true, 124#L788true, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 600#true, 614#true, Black: 608#(= ~y~0 0), 26#L744true, Black: 606#true, 41#L744true, Black: 616#(= ~__unbuffered_p0_EAX~0 0), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 11#P0EXITtrue, P0Thread1of2ForFork0InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1)]) [2023-08-04 06:26:43,043 INFO L294 olderBase$Statistics]: this new event has 41 ancestors and is cut-off event [2023-08-04 06:26:43,043 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:43,043 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:43,043 INFO L297 olderBase$Statistics]: existing Event has 41 ancestors and is cut-off event [2023-08-04 06:26:43,589 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([604] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= |v_P2Thread2of2ForFork2_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_82 1) v_~__unbuffered_cnt~0_81)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_82} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_81} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][112], [P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, 619#true, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 81#P2EXITtrue, 94#L726true, 119#P1EXITtrue, 124#L788true, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 614#true, Black: 608#(= ~y~0 0), 26#L744true, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, Black: 616#(= ~__unbuffered_p0_EAX~0 0), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), P0Thread1of2ForFork0InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), 55#L759true]) [2023-08-04 06:26:43,589 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 06:26:43,589 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:43,589 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:43,601 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 06:26:43,682 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([632] L788-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= (ite (= (ite (not (and (= v_~__unbuffered_p2_EAX~0_48 1) (= v_~__unbuffered_p1_EAX~0_42 1) (= 2 v_~__unbuffered_p0_EAX~0_42) (= v_~y~0_55 2))) 1 0) 0) 0 1) v_~main$tmp_guard1~0_49) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_36|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26| (mod v_~main$tmp_guard1~0_49 256)) (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_36| 0)) InVars {~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_42, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_42, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_48, ~y~0=v_~y~0_55} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_36|, ~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_42, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26|, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_42, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_49, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_48, ~y~0=v_~y~0_55} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][114], [P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, 107#P0EXITtrue, 619#true, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 94#L726true, 119#P1EXITtrue, 69#L759true, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 614#true, Black: 608#(= ~y~0 0), 26#L744true, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, Black: 616#(= ~__unbuffered_p0_EAX~0 0), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 112#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), P0Thread1of2ForFork0InUse, Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), 55#L759true]) [2023-08-04 06:26:43,682 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is not cut-off event [2023-08-04 06:26:43,682 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is not cut-off event [2023-08-04 06:26:43,682 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is not cut-off event [2023-08-04 06:26:43,682 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is not cut-off event [2023-08-04 06:26:43,727 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([604] L759-->P2EXIT: Formula: (and (= |v_P2Thread2of2ForFork2_#res.offset_7| 0) (= |v_P2Thread2of2ForFork2_#res.base_7| 0) (= (+ v_~__unbuffered_cnt~0_82 1) v_~__unbuffered_cnt~0_81)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_82} OutVars{P2Thread2of2ForFork2_#res.base=|v_P2Thread2of2ForFork2_#res.base_7|, P2Thread2of2ForFork2_#res.offset=|v_P2Thread2of2ForFork2_#res.offset_7|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_81} AuxVars[] AssignedVars[P2Thread2of2ForFork2_#res.base, P2Thread2of2ForFork2_#res.offset, ~__unbuffered_cnt~0][112], [P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, 619#true, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 81#P2EXITtrue, 119#P1EXITtrue, 124#L788true, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 614#true, Black: 608#(= ~y~0 0), 26#L744true, Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, Black: 616#(= ~__unbuffered_p0_EAX~0 0), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 11#P0EXITtrue, P0Thread1of2ForFork0InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), 55#L759true]) [2023-08-04 06:26:43,727 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-04 06:26:43,727 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:43,727 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:43,727 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:43,727 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([632] L788-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= (ite (= (ite (not (and (= v_~__unbuffered_p2_EAX~0_48 1) (= v_~__unbuffered_p1_EAX~0_42 1) (= 2 v_~__unbuffered_p0_EAX~0_42) (= v_~y~0_55 2))) 1 0) 0) 0 1) v_~main$tmp_guard1~0_49) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_36|) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26| (mod v_~main$tmp_guard1~0_49 256)) (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_36| 0)) InVars {~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_42, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_42, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_48, ~y~0=v_~y~0_55} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_36|, ~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_42, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_26|, ~__unbuffered_p1_EAX~0=v_~__unbuffered_p1_EAX~0_42, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_49, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_48, ~y~0=v_~y~0_55} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][114], [P0Thread2of2ForFork0InUse, P1Thread1of2ForFork1InUse, P1Thread2of2ForFork1InUse, P2Thread1of2ForFork2InUse, 107#P0EXITtrue, P2Thread2of2ForFork2InUse, 619#true, Black: 140#(<= |ULTIMATE.start_main_~asdf~0#1| 0), 119#P1EXITtrue, 69#L759true, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 211#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 614#true, 26#L744true, Black: 608#(= ~y~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= ~__unbuffered_p2_EAX~0 1)) (not (= ~__unbuffered_p0_EAX~0 2)) (not (= ~__unbuffered_p1_EAX~0 1))), 606#true, Black: 616#(= ~__unbuffered_p0_EAX~0 0), Black: 165#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 112#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, 11#P0EXITtrue, P0Thread1of2ForFork0InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 220#(<= |ULTIMATE.start_main_~asdf~0#1| 1), 55#L759true]) [2023-08-04 06:26:43,727 INFO L294 olderBase$Statistics]: this new event has 44 ancestors and is cut-off event [2023-08-04 06:26:43,727 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:43,727 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:43,727 INFO L297 olderBase$Statistics]: existing Event has 44 ancestors and is cut-off event [2023-08-04 06:26:43,745 INFO L124 PetriNetUnfolderBase]: 62954/81318 cut-off events. [2023-08-04 06:26:43,745 INFO L125 PetriNetUnfolderBase]: For 168934/178697 co-relation queries the response was YES. [2023-08-04 06:26:44,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275306 conditions, 81318 events. 62954/81318 cut-off events. For 168934/178697 co-relation queries the response was YES. Maximal size of possible extension queue 3657. Compared 477454 event pairs, 10709 based on Foata normal form. 3212/79077 useless extension candidates. Maximal degree in co-relation 154171. Up to 69765 conditions per place. [2023-08-04 06:26:44,368 INFO L140 encePairwiseOnDemand]: 202/210 looper letters, 87 selfloop transitions, 7 changer transitions 0/115 dead transitions. [2023-08-04 06:26:44,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 115 transitions, 887 flow [2023-08-04 06:26:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:26:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:26:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 379 transitions. [2023-08-04 06:26:44,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015873015873016 [2023-08-04 06:26:44,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 379 transitions. [2023-08-04 06:26:44,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 379 transitions. [2023-08-04 06:26:44,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:44,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 379 transitions. [2023-08-04 06:26:44,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:44,372 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 06:26:44,373 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 06:26:44,373 INFO L175 Difference]: Start difference. First operand has 74 places, 71 transitions, 440 flow. Second operand 3 states and 379 transitions. [2023-08-04 06:26:44,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 115 transitions, 887 flow [2023-08-04 06:26:44,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 115 transitions, 876 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:26:44,574 INFO L231 Difference]: Finished difference. Result has 76 places, 77 transitions, 480 flow [2023-08-04 06:26:44,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=480, PETRI_PLACES=76, PETRI_TRANSITIONS=77} [2023-08-04 06:26:44,575 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 25 predicate places. [2023-08-04 06:26:44,575 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 77 transitions, 480 flow [2023-08-04 06:26:44,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:44,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:44,575 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] [2023-08-04 06:26:44,581 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 06:26:44,776 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,SelfDestructingSolverStorable14 [2023-08-04 06:26:44,776 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:44,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:44,777 INFO L85 PathProgramCache]: Analyzing trace with hash 973563503, now seen corresponding path program 1 times [2023-08-04 06:26:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:44,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088190131] [2023-08-04 06:26:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:44,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:44,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 06:26:44,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:44,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088190131] [2023-08-04 06:26:44,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088190131] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:44,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034615874] [2023-08-04 06:26:44,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:44,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:44,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:44,928 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 06:26:44,930 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 06:26:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:45,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 06:26:45,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:45,075 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 06:26:45,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:26:45,179 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 06:26:45,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034615874] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:26:45,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:26:45,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-04 06:26:45,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173129590] [2023-08-04 06:26:45,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:26:45,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 06:26:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:45,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 06:26:45,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-04 06:26:45,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 210 [2023-08-04 06:26:45,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 77 transitions, 480 flow. Second operand has 8 states, 8 states have (on average 101.875) internal successors, (815), 8 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:45,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:45,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 210 [2023-08-04 06:26:45,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:53,432 INFO L124 PetriNetUnfolderBase]: 83626/108516 cut-off events. [2023-08-04 06:26:53,433 INFO L125 PetriNetUnfolderBase]: For 242485/242485 co-relation queries the response was YES. [2023-08-04 06:26:53,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417823 conditions, 108516 events. 83626/108516 cut-off events. For 242485/242485 co-relation queries the response was YES. Maximal size of possible extension queue 4363. Compared 664260 event pairs, 1375 based on Foata normal form. 5242/113745 useless extension candidates. Maximal degree in co-relation 225723. Up to 40979 conditions per place. [2023-08-04 06:26:54,194 INFO L140 encePairwiseOnDemand]: 191/210 looper letters, 284 selfloop transitions, 145 changer transitions 42/476 dead transitions. [2023-08-04 06:26:54,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 476 transitions, 3806 flow [2023-08-04 06:26:54,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-04 06:26:54,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-04 06:26:54,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1868 transitions. [2023-08-04 06:26:54,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.555952380952381 [2023-08-04 06:26:54,200 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1868 transitions. [2023-08-04 06:26:54,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1868 transitions. [2023-08-04 06:26:54,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:54,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1868 transitions. [2023-08-04 06:26:54,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 116.75) internal successors, (1868), 16 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:54,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:54,210 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:54,210 INFO L175 Difference]: Start difference. First operand has 76 places, 77 transitions, 480 flow. Second operand 16 states and 1868 transitions. [2023-08-04 06:26:54,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 476 transitions, 3806 flow [2023-08-04 06:26:54,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 476 transitions, 3785 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:26:54,558 INFO L231 Difference]: Finished difference. Result has 104 places, 213 transitions, 2028 flow [2023-08-04 06:26:54,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2028, PETRI_PLACES=104, PETRI_TRANSITIONS=213} [2023-08-04 06:26:54,559 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 53 predicate places. [2023-08-04 06:26:54,559 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 213 transitions, 2028 flow [2023-08-04 06:26:54,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.875) internal successors, (815), 8 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:54,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:54,559 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 06:26:54,571 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 06:26:54,765 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 06:26:54,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:54,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1194453952, now seen corresponding path program 1 times [2023-08-04 06:26:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:54,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695203379] [2023-08-04 06:26:54,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:54,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:54,907 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 06:26:54,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:54,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695203379] [2023-08-04 06:26:54,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695203379] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:26:54,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:26:54,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 06:26:54,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62526306] [2023-08-04 06:26:54,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:26:54,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:26:54,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:54,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:26:54,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:26:54,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 210 [2023-08-04 06:26:54,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 213 transitions, 2028 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:54,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:54,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 210 [2023-08-04 06:26:54,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:27:08,352 INFO L124 PetriNetUnfolderBase]: 104363/136096 cut-off events. [2023-08-04 06:27:08,352 INFO L125 PetriNetUnfolderBase]: For 815761/815761 co-relation queries the response was YES. [2023-08-04 06:27:09,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743745 conditions, 136096 events. 104363/136096 cut-off events. For 815761/815761 co-relation queries the response was YES. Maximal size of possible extension queue 5838. Compared 867653 event pairs, 5452 based on Foata normal form. 438/136515 useless extension candidates. Maximal degree in co-relation 743629. Up to 76004 conditions per place. [2023-08-04 06:27:10,015 INFO L140 encePairwiseOnDemand]: 198/210 looper letters, 325 selfloop transitions, 97 changer transitions 2/429 dead transitions. [2023-08-04 06:27:10,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 429 transitions, 4881 flow [2023-08-04 06:27:10,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:27:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:27:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 493 transitions. [2023-08-04 06:27:10,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5869047619047619 [2023-08-04 06:27:10,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 493 transitions. [2023-08-04 06:27:10,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 493 transitions. [2023-08-04 06:27:10,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:27:10,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 493 transitions. [2023-08-04 06:27:10,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:27:10,019 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 06:27:10,019 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 06:27:10,019 INFO L175 Difference]: Start difference. First operand has 104 places, 213 transitions, 2028 flow. Second operand 4 states and 493 transitions. [2023-08-04 06:27:10,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 429 transitions, 4881 flow [2023-08-04 06:28:08,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 429 transitions, 4611 flow, removed 103 selfloop flow, removed 3 redundant places. [2023-08-04 06:28:08,082 INFO L231 Difference]: Finished difference. Result has 106 places, 281 transitions, 3262 flow [2023-08-04 06:28:08,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1900, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3262, PETRI_PLACES=106, PETRI_TRANSITIONS=281} [2023-08-04 06:28:08,083 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 55 predicate places. [2023-08-04 06:28:08,083 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 281 transitions, 3262 flow [2023-08-04 06:28:08,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:28:08,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:28:08,083 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 06:28:08,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-04 06:28:08,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:28:08,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:28:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1669569346, now seen corresponding path program 1 times [2023-08-04 06:28:08,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:28:08,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138904432] [2023-08-04 06:28:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:28:08,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:28:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:28:08,222 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 06:28:08,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:28:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138904432] [2023-08-04 06:28:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138904432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:28:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608487426] [2023-08-04 06:28:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:28:08,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:28:08,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:28:08,225 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:28:08,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 06:28:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:28:08,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-04 06:28:08,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:28:08,465 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 06:28:08,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:28:08,651 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 06:28:08,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608487426] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:28:08,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:28:08,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 5, 5] total 12 [2023-08-04 06:28:08,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567079555] [2023-08-04 06:28:08,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:28:08,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-04 06:28:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:28:08,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-04 06:28:08,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-08-04 06:28:08,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 210 [2023-08-04 06:28:08,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 281 transitions, 3262 flow. Second operand has 14 states, 14 states have (on average 99.14285714285714) internal successors, (1388), 14 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:28:08,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:28:08,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 210 [2023-08-04 06:28:08,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:28:32,206 INFO L124 PetriNetUnfolderBase]: 134618/177666 cut-off events. [2023-08-04 06:28:32,206 INFO L125 PetriNetUnfolderBase]: For 1362687/1362687 co-relation queries the response was YES. [2023-08-04 06:28:33,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012339 conditions, 177666 events. 134618/177666 cut-off events. For 1362687/1362687 co-relation queries the response was YES. Maximal size of possible extension queue 7780. Compared 1193904 event pairs, 700 based on Foata normal form. 38/177691 useless extension candidates. Maximal degree in co-relation 716190. Up to 65894 conditions per place. [2023-08-04 06:28:34,293 INFO L140 encePairwiseOnDemand]: 191/210 looper letters, 613 selfloop transitions, 870 changer transitions 135/1623 dead transitions. [2023-08-04 06:28:34,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 1623 transitions, 20990 flow [2023-08-04 06:28:34,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-04 06:28:34,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-04 06:28:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3113 transitions. [2023-08-04 06:28:34,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490299823633157 [2023-08-04 06:28:34,300 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3113 transitions. [2023-08-04 06:28:34,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3113 transitions. [2023-08-04 06:28:34,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:28:34,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3113 transitions. [2023-08-04 06:28:34,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 115.29629629629629) internal successors, (3113), 27 states have internal predecessors, (3113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:28:34,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:28:34,315 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:28:34,316 INFO L175 Difference]: Start difference. First operand has 106 places, 281 transitions, 3262 flow. Second operand 27 states and 3113 transitions. [2023-08-04 06:28:34,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 1623 transitions, 20990 flow [2023-08-04 06:30:42,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 1623 transitions, 20990 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:30:42,434 INFO L231 Difference]: Finished difference. Result has 137 places, 1102 transitions, 15630 flow [2023-08-04 06:30:42,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=15630, PETRI_PLACES=137, PETRI_TRANSITIONS=1102} [2023-08-04 06:30:42,435 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2023-08-04 06:30:42,435 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 1102 transitions, 15630 flow [2023-08-04 06:30:42,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 99.14285714285714) internal successors, (1388), 14 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:30:42,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:30:42,436 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 06:30:42,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 06:30:42,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-04 06:30:42,641 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:30:42,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:30:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash 2139620164, now seen corresponding path program 1 times [2023-08-04 06:30:42,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:30:42,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565875776] [2023-08-04 06:30:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:30:42,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:30:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:30:42,781 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 06:30:42,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:30:42,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565875776] [2023-08-04 06:30:42,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565875776] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:30:42,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741924689] [2023-08-04 06:30:42,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:30:42,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:30:42,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:30:42,783 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:30:42,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 06:30:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:30:42,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-04 06:30:42,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:30:43,024 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 06:30:43,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:30:43,231 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 06:30:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741924689] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:30:43,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:30:43,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 15 [2023-08-04 06:30:43,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363189408] [2023-08-04 06:30:43,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:30:43,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-04 06:30:43,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:30:43,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-04 06:30:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2023-08-04 06:30:43,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 210 [2023-08-04 06:30:43,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 1102 transitions, 15630 flow. Second operand has 17 states, 17 states have (on average 95.58823529411765) internal successors, (1625), 17 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:30:43,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:30:43,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 210 [2023-08-04 06:30:43,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:33:56,377 INFO L124 PetriNetUnfolderBase]: 656122/851742 cut-off events. [2023-08-04 06:33:56,377 INFO L125 PetriNetUnfolderBase]: For 6801417/6801417 co-relation queries the response was YES. [2023-08-04 06:34:05,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131335 conditions, 851742 events. 656122/851742 cut-off events. For 6801417/6801417 co-relation queries the response was YES. Maximal size of possible extension queue 35036. Compared 6226561 event pairs, 3552 based on Foata normal form. 1005/852661 useless extension candidates. Maximal degree in co-relation 5061545. Up to 227515 conditions per place. [2023-08-04 06:34:09,066 INFO L140 encePairwiseOnDemand]: 189/210 looper letters, 1368 selfloop transitions, 2361 changer transitions 1412/5144 dead transitions. [2023-08-04 06:34:09,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 5144 transitions, 78129 flow [2023-08-04 06:34:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-04 06:34:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-04 06:34:09,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 5282 transitions. [2023-08-04 06:34:09,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467908902691512 [2023-08-04 06:34:09,090 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 5282 transitions. [2023-08-04 06:34:09,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 5282 transitions. [2023-08-04 06:34:09,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:34:09,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 5282 transitions. [2023-08-04 06:34:09,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 114.82608695652173) internal successors, (5282), 46 states have internal predecessors, (5282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:34:09,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:34:09,153 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:34:09,153 INFO L175 Difference]: Start difference. First operand has 137 places, 1102 transitions, 15630 flow. Second operand 46 states and 5282 transitions. [2023-08-04 06:34:09,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 5144 transitions, 78129 flow