/root/.sdkman/candidates/java/current/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf --buchiautomizer.automaton.type.for.concurrent.programs BUCHI_PETRI_NET -tc ../../../trunk/examples/toolchains/BuchiAutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-atomic/lamport.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-?-9ecb849-m [2024-02-09 23:29:04,175 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-09 23:29:04,274 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Termination-32bit-Automizer_Default.epf [2024-02-09 23:29:04,279 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-09 23:29:04,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-09 23:29:04,284 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.Only consider context switches at boundaries of atomic blocks [2024-02-09 23:29:04,327 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-09 23:29:04,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-09 23:29:04,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-09 23:29:04,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-09 23:29:04,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-09 23:29:04,331 INFO L153 SettingsManager]: * Use SBE=true [2024-02-09 23:29:04,331 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-02-09 23:29:04,345 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-02-09 23:29:04,345 INFO L153 SettingsManager]: * Use old map elimination=false [2024-02-09 23:29:04,345 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-02-09 23:29:04,345 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-02-09 23:29:04,345 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-02-09 23:29:04,346 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-09 23:29:04,346 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-02-09 23:29:04,346 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-09 23:29:04,347 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-09 23:29:04,347 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-09 23:29:04,347 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-09 23:29:04,347 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-02-09 23:29:04,347 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-02-09 23:29:04,347 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-02-09 23:29:04,348 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-02-09 23:29:04,348 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-09 23:29:04,348 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-09 23:29:04,348 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-02-09 23:29:04,348 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-09 23:29:04,348 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-09 23:29:04,349 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-09 23:29:04,349 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-09 23:29:04,349 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-09 23:29:04,349 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-09 23:29:04,350 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-02-09 23:29:04,350 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer: Automaton type for concurrent programs -> BUCHI_PETRI_NET [2024-02-09 23:29:04,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-09 23:29:04,623 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-09 23:29:04,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-09 23:29:04,626 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-09 23:29:04,626 INFO L274 PluginConnector]: CDTParser initialized [2024-02-09 23:29:04,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-atomic/lamport.i [2024-02-09 23:29:05,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-09 23:29:06,102 INFO L384 CDTParser]: Found 1 translation units. [2024-02-09 23:29:06,103 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/lamport.i [2024-02-09 23:29:06,134 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603d2cfc9/437a8e8cebf1425c828fad52c6930b5d/FLAG4d15cc9b0 [2024-02-09 23:29:06,146 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603d2cfc9/437a8e8cebf1425c828fad52c6930b5d [2024-02-09 23:29:06,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-09 23:29:06,148 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-02-09 23:29:06,149 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-09 23:29:06,149 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-09 23:29:06,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-09 23:29:06,161 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628e23f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06, skipping insertion in model container [2024-02-09 23:29:06,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,220 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-09 23:29:06,372 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2024-02-09 23:29:06,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 23:29:06,494 INFO L202 MainTranslator]: Completed pre-run [2024-02-09 23:29:06,516 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2024-02-09 23:29:06,534 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-02-09 23:29:06,557 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2024-02-09 23:29:06,557 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2024-02-09 23:29:06,557 WARN L672 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2024-02-09 23:29:06,562 INFO L206 MainTranslator]: Completed translation [2024-02-09 23:29:06,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06 WrapperNode [2024-02-09 23:29:06,563 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-09 23:29:06,564 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-09 23:29:06,564 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-09 23:29:06,564 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-09 23:29:06,569 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,581 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,602 INFO L138 Inliner]: procedures = 171, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 207 [2024-02-09 23:29:06,603 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-09 23:29:06,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-09 23:29:06,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-09 23:29:06,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-09 23:29:06,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,611 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,624 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,632 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,637 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,639 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-09 23:29:06,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-09 23:29:06,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-09 23:29:06,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-09 23:29:06,640 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (1/1) ... [2024-02-09 23:29:06,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-02-09 23:29:06,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-09 23:29:06,670 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-02-09 23:29:06,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-02-09 23:29:06,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-02-09 23:29:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2024-02-09 23:29:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2024-02-09 23:29:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-02-09 23:29:06,704 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-02-09 23:29:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-02-09 23:29:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-02-09 23:29:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-09 23:29:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-09 23:29:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-09 23:29:06,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-02-09 23:29:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-02-09 23:29:06,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-09 23:29:06,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-09 23:29:06,706 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-09 23:29:06,791 INFO L236 CfgBuilder]: Building ICFG [2024-02-09 23:29:06,793 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-09 23:29:06,984 INFO L277 CfgBuilder]: Performing block encoding [2024-02-09 23:29:06,991 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-09 23:29:06,991 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2024-02-09 23:29:06,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:29:06 BoogieIcfgContainer [2024-02-09 23:29:06,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-09 23:29:06,995 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-02-09 23:29:06,995 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-02-09 23:29:06,999 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-02-09 23:29:06,999 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:29:07,000 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.02 11:29:06" (1/3) ... [2024-02-09 23:29:07,010 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b02f52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 11:29:07, skipping insertion in model container [2024-02-09 23:29:07,011 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:29:07,011 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.02 11:29:06" (2/3) ... [2024-02-09 23:29:07,011 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6b02f52f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.02 11:29:07, skipping insertion in model container [2024-02-09 23:29:07,011 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-02-09 23:29:07,011 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.02 11:29:06" (3/3) ... [2024-02-09 23:29:07,012 INFO L332 chiAutomizerObserver]: Analyzing ICFG lamport.i [2024-02-09 23:29:07,107 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-02-09 23:29:07,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 141 transitions, 296 flow [2024-02-09 23:29:07,184 INFO L124 PetriNetUnfolderBase]: 26/137 cut-off events. [2024-02-09 23:29:07,187 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-02-09 23:29:07,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 26/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 305 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 107. Up to 5 conditions per place. [2024-02-09 23:29:07,194 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 141 transitions, 296 flow [2024-02-09 23:29:07,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 137 transitions, 286 flow [2024-02-09 23:29:07,211 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2024-02-09 23:29:07,212 INFO L304 stractBuchiCegarLoop]: Hoare is false [2024-02-09 23:29:07,212 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-02-09 23:29:07,212 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-02-09 23:29:07,212 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-02-09 23:29:07,212 INFO L308 stractBuchiCegarLoop]: Difference is false [2024-02-09 23:29:07,212 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-02-09 23:29:07,212 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiPetriNetCegarLoop ======== [2024-02-09 23:29:07,213 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 118 places, 137 transitions, 286 flow [2024-02-09 23:29:07,240 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-09 23:29:07,241 INFO L124 PetriNetUnfolderBase]: 5/60 cut-off events. [2024-02-09 23:29:07,241 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-09 23:29:07,241 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2024-02-09 23:29:07,243 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-02-09 23:29:07,243 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 118 places, 137 transitions, 286 flow [2024-02-09 23:29:07,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-09 23:29:07,250 INFO L124 PetriNetUnfolderBase]: 5/60 cut-off events. [2024-02-09 23:29:07,250 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-02-09 23:29:07,251 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2024-02-09 23:29:07,259 INFO L748 eck$LassoCheckResult]: Stem: 124#[$Ultimate##0]true [273] $Ultimate##0-->L-1: Formula: (= (select |v_#valid_1| 0) 0) InVars {#valid=|v_#valid_1|} OutVars{#valid=|v_#valid_1|} AuxVars[] AssignedVars[] 126#[L-1]true [280] L-1-->L12: Formula: (< 0 |v_#StackHeapBarrier_1|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|} AuxVars[] AssignedVars[] 128#[L12]true [320] L12-->L12-1: Formula: (and (= (select |v_#valid_2| 1) 1) (= 2 (select |v_#length_1| 1))) InVars {#length=|v_#length_1|, #valid=|v_#valid_2|} OutVars{#length=|v_#length_1|, #valid=|v_#valid_2|} AuxVars[] AssignedVars[] 130#[L12-1]true [338] L12-1-->L12-2: Formula: (= 48 (select (select |v_#memory_int_1| 1) 0)) InVars {#memory_int=|v_#memory_int_1|} OutVars{#memory_int=|v_#memory_int_1|} AuxVars[] AssignedVars[] 132#[L12-2]true [336] L12-2-->L12-3: Formula: (= (select (select |v_#memory_int_2| 1) 1) 0) InVars {#memory_int=|v_#memory_int_2|} OutVars{#memory_int=|v_#memory_int_2|} AuxVars[] AssignedVars[] 134#[L12-3]true [361] L12-3-->L12-4: Formula: (and (= (select |v_#length_2| 2) 10) (= (select |v_#valid_3| 2) 1)) InVars {#length=|v_#length_2|, #valid=|v_#valid_3|} OutVars{#length=|v_#length_2|, #valid=|v_#valid_3|} AuxVars[] AssignedVars[] 136#[L12-4]true [354] L12-4-->L700: Formula: (= v_~x~0_5 0) InVars {} OutVars{~x~0=v_~x~0_5} AuxVars[] AssignedVars[~x~0] 138#[L700]true [296] L700-->L701: Formula: (= v_~y~0_17 0) InVars {} OutVars{~y~0=v_~y~0_17} AuxVars[] AssignedVars[~y~0] 140#[L701]true [366] L701-->L701-1: Formula: (= v_~b1~0_7 0) InVars {} OutVars{~b1~0=v_~b1~0_7} AuxVars[] AssignedVars[~b1~0] 142#[L701-1]true [261] L701-1-->L702: Formula: (= v_~b2~0_7 0) InVars {} OutVars{~b2~0=v_~b2~0_7} AuxVars[] AssignedVars[~b2~0] 144#[L702]true [266] L702-->L-1-1: Formula: (= v_~X~0_7 0) InVars {} OutVars{~X~0=v_~X~0_7} AuxVars[] AssignedVars[~X~0] 146#[L-1-1]true [371] L-1-1-->L-1-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 148#[L-1-2]true [373] L-1-2-->L844: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_1|, ULTIMATE.start_main_#t~mem8#1=|v_ULTIMATE.start_main_#t~mem8#1_1|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_1|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_1|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_1|, ULTIMATE.start_main_#t~mem9#1=|v_ULTIMATE.start_main_#t~mem9#1_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_1|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_#t~mem8#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet7#1, ULTIMATE.start_main_#t~mem9#1, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_#t~pre4#1, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_~#t2~0#1.base] 150#[L844]true [310] L844-->L844-1: Formula: (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_2| 0) (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) 0) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) (= |v_#length_3| (store |v_#length_4| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 4)) (not (= |v_ULTIMATE.start_main_~#t1~0#1.base_2| 0)) (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 1) |v_#valid_4|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_4|, #valid=|v_#valid_5|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_3|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_2|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[#valid, #length, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset] 152#[L844-1]true [294] L844-1-->L844-2: Formula: (and (= |v_#length_5| (store |v_#length_6| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 4)) (= (select |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2|) 0) (= (store |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 1) |v_#valid_6|) (not (= |v_ULTIMATE.start_main_~#t2~0#1.base_2| 0)) (= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_2|) (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_main_~#t2~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_6|, #valid=|v_#valid_7|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_5|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_2|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_2|, #valid=|v_#valid_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t2~0#1.offset, #valid, #length, ULTIMATE.start_main_~#t2~0#1.base] 154#[L844-2]true [330] L844-2-->L845: Formula: (= |v_ULTIMATE.start_main_#t~pre4#1_2| |v_#pthreadsForks_1|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 156#[L845]true [358] L845-->L845-1: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 158#[L845-1]true [258] L845-1-->L845-2: Formula: (and (<= 0 |v_ULTIMATE.start_main_~#t1~0#1.offset_3|) (= (select |v_#valid_8| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) 1) (= (store |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3| (store (select |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) |v_ULTIMATE.start_main_~#t1~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre4#1_3|)) |v_#memory_int_3|) (<= (+ |v_ULTIMATE.start_main_~#t1~0#1.offset_3| 4) (select |v_#length_7| |v_ULTIMATE.start_main_~#t1~0#1.base_3|))) InVars {#valid=|v_#valid_8|, #memory_int=|v_#memory_int_4|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} OutVars{#valid=|v_#valid_8|, #memory_int=|v_#memory_int_3|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} AuxVars[] AssignedVars[#memory_int] 160#[L845-2]true [485] L845-2-->$Ultimate##0: Formula: (and (= |v_thr1Thread1of1ForFork1_#in~_#1.offset_4| 0) (= v_thr1Thread1of1ForFork1_thidvar1_2 0) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_4| 0) (= |v_ULTIMATE.start_main_#t~pre4#1_7| v_thr1Thread1of1ForFork1_thidvar0_2)) InVars {ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_4|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset_8|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|, thr1Thread1of1ForFork1_thidvar1=v_thr1Thread1of1ForFork1_thidvar1_2, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_4|, thr1Thread1of1ForFork1_thidvar0=v_thr1Thread1of1ForFork1_thidvar0_2, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base_8|, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_12|, thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_4|, thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_8|, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_30|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#in~_#1.base, thr1Thread1of1ForFork1_#in~_#1.offset, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset, thr1Thread1of1ForFork1_thidvar1, thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_thidvar0, thr1Thread1of1ForFork1_#res#1.base, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base, thr1Thread1of1ForFork1_~b21~0#1, thr1Thread1of1ForFork1_#res#1.offset, thr1Thread1of1ForFork1_~x1~0#1, thr1Thread1of1ForFork1_~y1~0#1, thr1Thread1of1ForFork1_~_#1.base] 162#[$Ultimate##0, L845-3]true [432] $Ultimate##0-->$Ultimate##3: Formula: (and (= |v_thr1Thread1of1ForFork1_~_#1.offset_1| |v_thr1Thread1of1ForFork1_#in~_#1.offset_1|) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_1| |v_thr1Thread1of1ForFork1_~_#1.base_1|)) InVars {thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_1|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_1|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_1|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_1|, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_1|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_~_#1.base] 164#[$Ultimate##3, L845-3]true [434] $Ultimate##3-->L753-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 166#[L753-1, L845-3]true [2024-02-09 23:29:07,262 INFO L750 eck$LassoCheckResult]: Loop: 166#[L753-1, L845-3]true [436] L753-1-->L705: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 169#[L705, L845-3]true [440] L705-->L707: Formula: (= v_~b1~0_5 1) InVars {} OutVars{~b1~0=v_~b1~0_5} AuxVars[] AssignedVars[~b1~0] 171#[L707, L845-3]true [443] L707-->L710: Formula: (= v_~x~0_4 1) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] 173#[L710, L845-3]true [447] L710-->L713: Formula: (= v_~y~0_15 |v_thr1Thread1of1ForFork1_~y1~0#1_1|) InVars {~y~0=v_~y~0_15} OutVars{~y~0=v_~y~0_15, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~y1~0#1] 175#[L713, L845-3]true [451] L713-->L715: Formula: (not (= |v_thr1Thread1of1ForFork1_~y1~0#1_3| 0)) InVars {thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_3|} OutVars{thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_3|} AuxVars[] AssignedVars[] 177#[L715, L845-3]true [455] L715-->L717: Formula: (= v_~b1~0_6 0) InVars {} OutVars{~b1~0=v_~b1~0_6} AuxVars[] AssignedVars[~b1~0] 179#[L717, L845-3]true [457] L717-->L724: Formula: (= v_~y~0_16 |v_thr1Thread1of1ForFork1_~y1~0#1_7|) InVars {~y~0=v_~y~0_16} OutVars{~y~0=v_~y~0_16, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_7|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~y1~0#1] 181#[L724, L845-3]true [460] L724-->L753-1: Formula: (= |v_thr1Thread1of1ForFork1_~y1~0#1_11| 0) InVars {thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_11|} OutVars{thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_11|} AuxVars[] AssignedVars[] 166#[L753-1, L845-3]true [2024-02-09 23:29:07,266 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:07,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1185385107, now seen corresponding path program 1 times [2024-02-09 23:29:07,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:07,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090522499] [2024-02-09 23:29:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:07,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:07,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:07,432 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:07,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:07,435 INFO L85 PathProgramCache]: Analyzing trace with hash 2027716720, now seen corresponding path program 1 times [2024-02-09 23:29:07,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:07,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182435643] [2024-02-09 23:29:07,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:07,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 23:29:07,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 23:29:07,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-09 23:29:07,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182435643] [2024-02-09 23:29:07,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182435643] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-09 23:29:07,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-09 23:29:07,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-09 23:29:07,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229381838] [2024-02-09 23:29:07,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-09 23:29:07,681 INFO L765 eck$LassoCheckResult]: loop already infeasible [2024-02-09 23:29:07,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-09 23:29:07,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-09 23:29:07,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-09 23:29:08,041 INFO L175 Difference]: Start difference. First operand has 118 places, 137 transitions, 286 flow. Second operand 7 states and 987 transitions. [2024-02-09 23:29:08,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 137 transitions, 286 flow. Second operand 7 states and 987 transitions. [2024-02-09 23:29:08,046 INFO L120 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 141 [2024-02-09 23:29:08,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-09 23:29:08,177 INFO L124 PetriNetUnfolderBase]: 144/768 cut-off events. [2024-02-09 23:29:08,178 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-02-09 23:29:08,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918 conditions, 768 events. 144/768 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4891 event pairs, 0 based on Foata normal form. 189/833 useless extension candidates. Maximal degree in co-relation 861. Up to 37 conditions per place. [2024-02-09 23:29:08,190 INFO L140 encePairwiseOnDemand]: 110/141 looper letters, 32 selfloop transitions, 30 changer transitions 0/162 dead transitions. [2024-02-09 23:29:08,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 162 transitions, 460 flow [2024-02-09 23:29:08,193 INFO L231 Difference]: Finished difference. Result has 130 places, 151 transitions, 490 flow [2024-02-09 23:29:08,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-09 23:29:08,198 INFO L428 stractBuchiCegarLoop]: Abstraction has has 130 places, 151 transitions, 490 flow [2024-02-09 23:29:08,198 INFO L335 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-02-09 23:29:08,198 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 130 places, 151 transitions, 490 flow [2024-02-09 23:29:08,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-09 23:29:08,203 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2024-02-09 23:29:08,203 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-02-09 23:29:08,203 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2024-02-09 23:29:08,207 INFO L748 eck$LassoCheckResult]: Stem: 124#[$Ultimate##0]true [273] $Ultimate##0-->L-1: Formula: (= (select |v_#valid_1| 0) 0) InVars {#valid=|v_#valid_1|} OutVars{#valid=|v_#valid_1|} AuxVars[] AssignedVars[] 126#[L-1]true [280] L-1-->L12: Formula: (< 0 |v_#StackHeapBarrier_1|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|} AuxVars[] AssignedVars[] 128#[L12]true [320] L12-->L12-1: Formula: (and (= (select |v_#valid_2| 1) 1) (= 2 (select |v_#length_1| 1))) InVars {#length=|v_#length_1|, #valid=|v_#valid_2|} OutVars{#length=|v_#length_1|, #valid=|v_#valid_2|} AuxVars[] AssignedVars[] 130#[L12-1]true [338] L12-1-->L12-2: Formula: (= 48 (select (select |v_#memory_int_1| 1) 0)) InVars {#memory_int=|v_#memory_int_1|} OutVars{#memory_int=|v_#memory_int_1|} AuxVars[] AssignedVars[] 132#[L12-2]true [336] L12-2-->L12-3: Formula: (= (select (select |v_#memory_int_2| 1) 1) 0) InVars {#memory_int=|v_#memory_int_2|} OutVars{#memory_int=|v_#memory_int_2|} AuxVars[] AssignedVars[] 134#[L12-3]true [361] L12-3-->L12-4: Formula: (and (= (select |v_#length_2| 2) 10) (= (select |v_#valid_3| 2) 1)) InVars {#length=|v_#length_2|, #valid=|v_#valid_3|} OutVars{#length=|v_#length_2|, #valid=|v_#valid_3|} AuxVars[] AssignedVars[] 136#[L12-4]true [354] L12-4-->L700: Formula: (= v_~x~0_5 0) InVars {} OutVars{~x~0=v_~x~0_5} AuxVars[] AssignedVars[~x~0] 138#[L700]true [296] L700-->L701: Formula: (= v_~y~0_17 0) InVars {} OutVars{~y~0=v_~y~0_17} AuxVars[] AssignedVars[~y~0] 140#[L701]true [366] L701-->L701-1: Formula: (= v_~b1~0_7 0) InVars {} OutVars{~b1~0=v_~b1~0_7} AuxVars[] AssignedVars[~b1~0] 142#[L701-1]true [261] L701-1-->L702: Formula: (= v_~b2~0_7 0) InVars {} OutVars{~b2~0=v_~b2~0_7} AuxVars[] AssignedVars[~b2~0] 144#[L702]true [266] L702-->L-1-1: Formula: (= v_~X~0_7 0) InVars {} OutVars{~X~0=v_~X~0_7} AuxVars[] AssignedVars[~X~0] 146#[L-1-1]true [371] L-1-1-->L-1-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 148#[L-1-2]true [373] L-1-2-->L844: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_1|, ULTIMATE.start_main_#t~mem8#1=|v_ULTIMATE.start_main_#t~mem8#1_1|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_1|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_1|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_1|, ULTIMATE.start_main_#t~mem9#1=|v_ULTIMATE.start_main_#t~mem9#1_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_1|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_#t~mem8#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet7#1, ULTIMATE.start_main_#t~mem9#1, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_#t~pre4#1, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_~#t2~0#1.base] 150#[L844]true [310] L844-->L844-1: Formula: (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_2| 0) (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) 0) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) (= |v_#length_3| (store |v_#length_4| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 4)) (not (= |v_ULTIMATE.start_main_~#t1~0#1.base_2| 0)) (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 1) |v_#valid_4|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_4|, #valid=|v_#valid_5|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_3|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_2|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[#valid, #length, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset] 152#[L844-1]true [294] L844-1-->L844-2: Formula: (and (= |v_#length_5| (store |v_#length_6| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 4)) (= (select |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2|) 0) (= (store |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 1) |v_#valid_6|) (not (= |v_ULTIMATE.start_main_~#t2~0#1.base_2| 0)) (= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_2|) (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_main_~#t2~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_6|, #valid=|v_#valid_7|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_5|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_2|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_2|, #valid=|v_#valid_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t2~0#1.offset, #valid, #length, ULTIMATE.start_main_~#t2~0#1.base] 154#[L844-2]true [330] L844-2-->L845: Formula: (= |v_ULTIMATE.start_main_#t~pre4#1_2| |v_#pthreadsForks_1|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 156#[L845]true [358] L845-->L845-1: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 158#[L845-1]true [258] L845-1-->L845-2: Formula: (and (<= 0 |v_ULTIMATE.start_main_~#t1~0#1.offset_3|) (= (select |v_#valid_8| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) 1) (= (store |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3| (store (select |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) |v_ULTIMATE.start_main_~#t1~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre4#1_3|)) |v_#memory_int_3|) (<= (+ |v_ULTIMATE.start_main_~#t1~0#1.offset_3| 4) (select |v_#length_7| |v_ULTIMATE.start_main_~#t1~0#1.base_3|))) InVars {#valid=|v_#valid_8|, #memory_int=|v_#memory_int_4|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} OutVars{#valid=|v_#valid_8|, #memory_int=|v_#memory_int_3|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} AuxVars[] AssignedVars[#memory_int] 160#[L845-2]true [485] L845-2-->$Ultimate##0: Formula: (and (= |v_thr1Thread1of1ForFork1_#in~_#1.offset_4| 0) (= v_thr1Thread1of1ForFork1_thidvar1_2 0) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_4| 0) (= |v_ULTIMATE.start_main_#t~pre4#1_7| v_thr1Thread1of1ForFork1_thidvar0_2)) InVars {ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_4|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset_8|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|, thr1Thread1of1ForFork1_thidvar1=v_thr1Thread1of1ForFork1_thidvar1_2, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_4|, thr1Thread1of1ForFork1_thidvar0=v_thr1Thread1of1ForFork1_thidvar0_2, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base_8|, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_12|, thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_4|, thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_8|, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_30|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#in~_#1.base, thr1Thread1of1ForFork1_#in~_#1.offset, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset, thr1Thread1of1ForFork1_thidvar1, thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_thidvar0, thr1Thread1of1ForFork1_#res#1.base, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base, thr1Thread1of1ForFork1_~b21~0#1, thr1Thread1of1ForFork1_#res#1.offset, thr1Thread1of1ForFork1_~x1~0#1, thr1Thread1of1ForFork1_~y1~0#1, thr1Thread1of1ForFork1_~_#1.base] 162#[$Ultimate##0, L845-3]true [432] $Ultimate##0-->$Ultimate##3: Formula: (and (= |v_thr1Thread1of1ForFork1_~_#1.offset_1| |v_thr1Thread1of1ForFork1_#in~_#1.offset_1|) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_1| |v_thr1Thread1of1ForFork1_~_#1.base_1|)) InVars {thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_1|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_1|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_1|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_1|, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_1|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_~_#1.base] 164#[$Ultimate##3, L845-3]true [434] $Ultimate##3-->L753-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 166#[L753-1, L845-3]true [436] L753-1-->L705: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 169#[L705, L845-3]true [440] L705-->L707: Formula: (= v_~b1~0_5 1) InVars {} OutVars{~b1~0=v_~b1~0_5} AuxVars[] AssignedVars[~b1~0] 171#[L707, L845-3]true [443] L707-->L710: Formula: (= v_~x~0_4 1) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] 173#[L710, L845-3]true [447] L710-->L713: Formula: (= v_~y~0_15 |v_thr1Thread1of1ForFork1_~y1~0#1_1|) InVars {~y~0=v_~y~0_15} OutVars{~y~0=v_~y~0_15, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~y1~0#1] 175#[L713, L845-3]true [451] L713-->L715: Formula: (not (= |v_thr1Thread1of1ForFork1_~y1~0#1_3| 0)) InVars {thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_3|} OutVars{thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_3|} AuxVars[] AssignedVars[] 177#[L715, L845-3]true [455] L715-->L717: Formula: (= v_~b1~0_6 0) InVars {} OutVars{~b1~0=v_~b1~0_6} AuxVars[] AssignedVars[~b1~0] 179#[L717, L845-3]true [457] L717-->L724: Formula: (= v_~y~0_16 |v_thr1Thread1of1ForFork1_~y1~0#1_7|) InVars {~y~0=v_~y~0_16} OutVars{~y~0=v_~y~0_16, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_7|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~y1~0#1] 181#[L724, L845-3]true [2024-02-09 23:29:08,207 INFO L750 eck$LassoCheckResult]: Loop: 181#[L724, L845-3]true [459] L724-->L722: Formula: (not (= |v_thr1Thread1of1ForFork1_~y1~0#1_9| 0)) InVars {thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_9|} OutVars{thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_9|} AuxVars[] AssignedVars[] 265#[L722, L845-3]true [464] L722-->L724: Formula: (= |v_thr1Thread1of1ForFork1_~y1~0#1_13| v_~y~0_9) InVars {~y~0=v_~y~0_9} OutVars{~y~0=v_~y~0_9, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_13|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~y1~0#1] 181#[L724, L845-3]true [2024-02-09 23:29:08,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:08,209 INFO L85 PathProgramCache]: Analyzing trace with hash -667945488, now seen corresponding path program 1 times [2024-02-09 23:29:08,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:08,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032774003] [2024-02-09 23:29:08,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:08,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 23:29:08,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 23:29:08,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-09 23:29:08,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032774003] [2024-02-09 23:29:08,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032774003] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-09 23:29:08,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-09 23:29:08,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-09 23:29:08,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606047294] [2024-02-09 23:29:08,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-09 23:29:08,318 INFO L753 eck$LassoCheckResult]: stem already infeasible [2024-02-09 23:29:08,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:08,319 INFO L85 PathProgramCache]: Analyzing trace with hash 15654, now seen corresponding path program 1 times [2024-02-09 23:29:08,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:08,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709799307] [2024-02-09 23:29:08,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:08,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:08,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:08,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:08,336 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:08,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-09 23:29:08,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-09 23:29:08,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-09 23:29:08,470 INFO L175 Difference]: Start difference. First operand has 130 places, 151 transitions, 490 flow. Second operand 5 states and 705 transitions. [2024-02-09 23:29:08,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 151 transitions, 490 flow. Second operand 5 states and 705 transitions. [2024-02-09 23:29:08,472 INFO L120 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 141 [2024-02-09 23:29:08,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-09 23:29:08,518 INFO L124 PetriNetUnfolderBase]: 114/626 cut-off events. [2024-02-09 23:29:08,518 INFO L125 PetriNetUnfolderBase]: For 227/272 co-relation queries the response was YES. [2024-02-09 23:29:08,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 626 events. 114/626 cut-off events. For 227/272 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3678 event pairs, 5 based on Foata normal form. 25/554 useless extension candidates. Maximal degree in co-relation 909. Up to 54 conditions per place. [2024-02-09 23:29:08,524 INFO L140 encePairwiseOnDemand]: 126/141 looper letters, 34 selfloop transitions, 20 changer transitions 0/154 dead transitions. [2024-02-09 23:29:08,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 154 transitions, 612 flow [2024-02-09 23:29:08,525 INFO L231 Difference]: Finished difference. Result has 134 places, 147 transitions, 506 flow [2024-02-09 23:29:08,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-09 23:29:08,526 INFO L428 stractBuchiCegarLoop]: Abstraction has has 134 places, 147 transitions, 506 flow [2024-02-09 23:29:08,526 INFO L335 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-02-09 23:29:08,526 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 134 places, 147 transitions, 506 flow [2024-02-09 23:29:08,529 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-09 23:29:08,529 INFO L124 PetriNetUnfolderBase]: 0/51 cut-off events. [2024-02-09 23:29:08,529 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-02-09 23:29:08,530 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2024-02-09 23:29:08,530 INFO L748 eck$LassoCheckResult]: Stem: 124#[$Ultimate##0]true [273] $Ultimate##0-->L-1: Formula: (= (select |v_#valid_1| 0) 0) InVars {#valid=|v_#valid_1|} OutVars{#valid=|v_#valid_1|} AuxVars[] AssignedVars[] 126#[L-1]true [280] L-1-->L12: Formula: (< 0 |v_#StackHeapBarrier_1|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|} AuxVars[] AssignedVars[] 128#[L12]true [320] L12-->L12-1: Formula: (and (= (select |v_#valid_2| 1) 1) (= 2 (select |v_#length_1| 1))) InVars {#length=|v_#length_1|, #valid=|v_#valid_2|} OutVars{#length=|v_#length_1|, #valid=|v_#valid_2|} AuxVars[] AssignedVars[] 130#[L12-1]true [338] L12-1-->L12-2: Formula: (= 48 (select (select |v_#memory_int_1| 1) 0)) InVars {#memory_int=|v_#memory_int_1|} OutVars{#memory_int=|v_#memory_int_1|} AuxVars[] AssignedVars[] 132#[L12-2]true [336] L12-2-->L12-3: Formula: (= (select (select |v_#memory_int_2| 1) 1) 0) InVars {#memory_int=|v_#memory_int_2|} OutVars{#memory_int=|v_#memory_int_2|} AuxVars[] AssignedVars[] 134#[L12-3]true [361] L12-3-->L12-4: Formula: (and (= (select |v_#length_2| 2) 10) (= (select |v_#valid_3| 2) 1)) InVars {#length=|v_#length_2|, #valid=|v_#valid_3|} OutVars{#length=|v_#length_2|, #valid=|v_#valid_3|} AuxVars[] AssignedVars[] 136#[L12-4]true [354] L12-4-->L700: Formula: (= v_~x~0_5 0) InVars {} OutVars{~x~0=v_~x~0_5} AuxVars[] AssignedVars[~x~0] 138#[L700]true [296] L700-->L701: Formula: (= v_~y~0_17 0) InVars {} OutVars{~y~0=v_~y~0_17} AuxVars[] AssignedVars[~y~0] 140#[L701]true [366] L701-->L701-1: Formula: (= v_~b1~0_7 0) InVars {} OutVars{~b1~0=v_~b1~0_7} AuxVars[] AssignedVars[~b1~0] 142#[L701-1]true [261] L701-1-->L702: Formula: (= v_~b2~0_7 0) InVars {} OutVars{~b2~0=v_~b2~0_7} AuxVars[] AssignedVars[~b2~0] 144#[L702]true [266] L702-->L-1-1: Formula: (= v_~X~0_7 0) InVars {} OutVars{~X~0=v_~X~0_7} AuxVars[] AssignedVars[~X~0] 146#[L-1-1]true [371] L-1-1-->L-1-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 148#[L-1-2]true [373] L-1-2-->L844: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_1|, ULTIMATE.start_main_#t~mem8#1=|v_ULTIMATE.start_main_#t~mem8#1_1|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_1|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_1|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_1|, ULTIMATE.start_main_#t~mem9#1=|v_ULTIMATE.start_main_#t~mem9#1_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_1|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_#t~mem8#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet7#1, ULTIMATE.start_main_#t~mem9#1, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_#t~pre4#1, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_~#t2~0#1.base] 150#[L844]true [310] L844-->L844-1: Formula: (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_2| 0) (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) 0) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) (= |v_#length_3| (store |v_#length_4| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 4)) (not (= |v_ULTIMATE.start_main_~#t1~0#1.base_2| 0)) (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 1) |v_#valid_4|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_4|, #valid=|v_#valid_5|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_3|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_2|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[#valid, #length, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset] 152#[L844-1]true [294] L844-1-->L844-2: Formula: (and (= |v_#length_5| (store |v_#length_6| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 4)) (= (select |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2|) 0) (= (store |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 1) |v_#valid_6|) (not (= |v_ULTIMATE.start_main_~#t2~0#1.base_2| 0)) (= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_2|) (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_main_~#t2~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_6|, #valid=|v_#valid_7|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_5|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_2|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_2|, #valid=|v_#valid_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t2~0#1.offset, #valid, #length, ULTIMATE.start_main_~#t2~0#1.base] 154#[L844-2]true [330] L844-2-->L845: Formula: (= |v_ULTIMATE.start_main_#t~pre4#1_2| |v_#pthreadsForks_1|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 156#[L845]true [358] L845-->L845-1: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 158#[L845-1]true [258] L845-1-->L845-2: Formula: (and (<= 0 |v_ULTIMATE.start_main_~#t1~0#1.offset_3|) (= (select |v_#valid_8| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) 1) (= (store |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3| (store (select |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) |v_ULTIMATE.start_main_~#t1~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre4#1_3|)) |v_#memory_int_3|) (<= (+ |v_ULTIMATE.start_main_~#t1~0#1.offset_3| 4) (select |v_#length_7| |v_ULTIMATE.start_main_~#t1~0#1.base_3|))) InVars {#valid=|v_#valid_8|, #memory_int=|v_#memory_int_4|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} OutVars{#valid=|v_#valid_8|, #memory_int=|v_#memory_int_3|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} AuxVars[] AssignedVars[#memory_int] 160#[L845-2]true [485] L845-2-->$Ultimate##0: Formula: (and (= |v_thr1Thread1of1ForFork1_#in~_#1.offset_4| 0) (= v_thr1Thread1of1ForFork1_thidvar1_2 0) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_4| 0) (= |v_ULTIMATE.start_main_#t~pre4#1_7| v_thr1Thread1of1ForFork1_thidvar0_2)) InVars {ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_4|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset_8|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|, thr1Thread1of1ForFork1_thidvar1=v_thr1Thread1of1ForFork1_thidvar1_2, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_4|, thr1Thread1of1ForFork1_thidvar0=v_thr1Thread1of1ForFork1_thidvar0_2, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base_8|, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_12|, thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_4|, thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_8|, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_30|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#in~_#1.base, thr1Thread1of1ForFork1_#in~_#1.offset, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset, thr1Thread1of1ForFork1_thidvar1, thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_thidvar0, thr1Thread1of1ForFork1_#res#1.base, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base, thr1Thread1of1ForFork1_~b21~0#1, thr1Thread1of1ForFork1_#res#1.offset, thr1Thread1of1ForFork1_~x1~0#1, thr1Thread1of1ForFork1_~y1~0#1, thr1Thread1of1ForFork1_~_#1.base] 162#[$Ultimate##0, L845-3]true [432] $Ultimate##0-->$Ultimate##3: Formula: (and (= |v_thr1Thread1of1ForFork1_~_#1.offset_1| |v_thr1Thread1of1ForFork1_#in~_#1.offset_1|) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_1| |v_thr1Thread1of1ForFork1_~_#1.base_1|)) InVars {thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_1|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_1|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_1|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_1|, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_1|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_~_#1.base] 164#[$Ultimate##3, L845-3]true [434] $Ultimate##3-->L753-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 166#[L753-1, L845-3]true [436] L753-1-->L705: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 169#[L705, L845-3]true [440] L705-->L707: Formula: (= v_~b1~0_5 1) InVars {} OutVars{~b1~0=v_~b1~0_5} AuxVars[] AssignedVars[~b1~0] 171#[L707, L845-3]true [443] L707-->L710: Formula: (= v_~x~0_4 1) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] 173#[L710, L845-3]true [447] L710-->L713: Formula: (= v_~y~0_15 |v_thr1Thread1of1ForFork1_~y1~0#1_1|) InVars {~y~0=v_~y~0_15} OutVars{~y~0=v_~y~0_15, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~y1~0#1] 175#[L713, L845-3]true [452] L713-->L728: Formula: (= |v_thr1Thread1of1ForFork1_~y1~0#1_5| 0) InVars {thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_5|} OutVars{thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_5|} AuxVars[] AssignedVars[] 304#[L728, L845-3]true [456] L728-->L730: Formula: (= v_~y~0_10 1) InVars {} OutVars{~y~0=v_~y~0_10} AuxVars[] AssignedVars[~y~0] 306#[L845-3, L730]true [458] L730-->L733: Formula: (= |v_thr1Thread1of1ForFork1_~x1~0#1_1| v_~x~0_3) InVars {~x~0=v_~x~0_3} OutVars{thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_1|, ~x~0=v_~x~0_3} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~x1~0#1] 308#[L733, L845-3]true [462] L733-->L735: Formula: (not (= |v_thr1Thread1of1ForFork1_~x1~0#1_3| 1)) InVars {thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_3|} OutVars{thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_3|} AuxVars[] AssignedVars[] 310#[L735, L845-3]true [465] L735-->L737: Formula: (= v_~b1~0_4 0) InVars {} OutVars{~b1~0=v_~b1~0_4} AuxVars[] AssignedVars[~b1~0] 312#[L737, L845-3]true [466] L737-->L744: Formula: (= v_~b2~0_5 |v_thr1Thread1of1ForFork1_~b21~0#1_1|) InVars {~b2~0=v_~b2~0_5} OutVars{~b2~0=v_~b2~0_5, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~b21~0#1] 314#[L744, L845-3]true [2024-02-09 23:29:08,531 INFO L750 eck$LassoCheckResult]: Loop: 314#[L744, L845-3]true [467] L744-->L742: Formula: (<= 1 |v_thr1Thread1of1ForFork1_~b21~0#1_3|) InVars {thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_3|} OutVars{thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_3|} AuxVars[] AssignedVars[] 317#[L742, L845-3]true [470] L742-->L744: Formula: (= v_~b2~0_6 |v_thr1Thread1of1ForFork1_~b21~0#1_7|) InVars {~b2~0=v_~b2~0_6} OutVars{~b2~0=v_~b2~0_6, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_7|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~b21~0#1] 314#[L744, L845-3]true [2024-02-09 23:29:08,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash -150509314, now seen corresponding path program 1 times [2024-02-09 23:29:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762004599] [2024-02-09 23:29:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:08,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:08,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 23:29:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 23:29:08,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-09 23:29:08,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762004599] [2024-02-09 23:29:08,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762004599] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-09 23:29:08,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-09 23:29:08,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-09 23:29:08,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824612227] [2024-02-09 23:29:08,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-09 23:29:08,567 INFO L753 eck$LassoCheckResult]: stem already infeasible [2024-02-09 23:29:08,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:08,567 INFO L85 PathProgramCache]: Analyzing trace with hash 15908, now seen corresponding path program 1 times [2024-02-09 23:29:08,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:08,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938702435] [2024-02-09 23:29:08,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:08,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:08,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:08,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:08,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-09 23:29:08,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-09 23:29:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-09 23:29:08,626 INFO L175 Difference]: Start difference. First operand has 134 places, 147 transitions, 506 flow. Second operand 5 states and 705 transitions. [2024-02-09 23:29:08,627 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 147 transitions, 506 flow. Second operand 5 states and 705 transitions. [2024-02-09 23:29:08,627 INFO L120 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 141 [2024-02-09 23:29:08,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-09 23:29:08,701 INFO L124 PetriNetUnfolderBase]: 147/901 cut-off events. [2024-02-09 23:29:08,701 INFO L125 PetriNetUnfolderBase]: For 191/199 co-relation queries the response was YES. [2024-02-09 23:29:08,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 901 events. 147/901 cut-off events. For 191/199 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6146 event pairs, 5 based on Foata normal form. 1/770 useless extension candidates. Maximal degree in co-relation 1190. Up to 34 conditions per place. [2024-02-09 23:29:08,708 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 9 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-02-09 23:29:08,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 154 transitions, 548 flow [2024-02-09 23:29:08,709 INFO L231 Difference]: Finished difference. Result has 142 places, 152 transitions, 550 flow [2024-02-09 23:29:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-09 23:29:08,710 INFO L428 stractBuchiCegarLoop]: Abstraction has has 142 places, 152 transitions, 550 flow [2024-02-09 23:29:08,710 INFO L335 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-02-09 23:29:08,710 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 142 places, 152 transitions, 550 flow [2024-02-09 23:29:08,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-09 23:29:08,714 INFO L124 PetriNetUnfolderBase]: 0/57 cut-off events. [2024-02-09 23:29:08,714 INFO L125 PetriNetUnfolderBase]: For 21/23 co-relation queries the response was YES. [2024-02-09 23:29:08,714 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2024-02-09 23:29:08,715 INFO L748 eck$LassoCheckResult]: Stem: 124#[$Ultimate##0]true [273] $Ultimate##0-->L-1: Formula: (= (select |v_#valid_1| 0) 0) InVars {#valid=|v_#valid_1|} OutVars{#valid=|v_#valid_1|} AuxVars[] AssignedVars[] 126#[L-1]true [280] L-1-->L12: Formula: (< 0 |v_#StackHeapBarrier_1|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|} AuxVars[] AssignedVars[] 128#[L12]true [320] L12-->L12-1: Formula: (and (= (select |v_#valid_2| 1) 1) (= 2 (select |v_#length_1| 1))) InVars {#length=|v_#length_1|, #valid=|v_#valid_2|} OutVars{#length=|v_#length_1|, #valid=|v_#valid_2|} AuxVars[] AssignedVars[] 130#[L12-1]true [338] L12-1-->L12-2: Formula: (= 48 (select (select |v_#memory_int_1| 1) 0)) InVars {#memory_int=|v_#memory_int_1|} OutVars{#memory_int=|v_#memory_int_1|} AuxVars[] AssignedVars[] 132#[L12-2]true [336] L12-2-->L12-3: Formula: (= (select (select |v_#memory_int_2| 1) 1) 0) InVars {#memory_int=|v_#memory_int_2|} OutVars{#memory_int=|v_#memory_int_2|} AuxVars[] AssignedVars[] 134#[L12-3]true [361] L12-3-->L12-4: Formula: (and (= (select |v_#length_2| 2) 10) (= (select |v_#valid_3| 2) 1)) InVars {#length=|v_#length_2|, #valid=|v_#valid_3|} OutVars{#length=|v_#length_2|, #valid=|v_#valid_3|} AuxVars[] AssignedVars[] 136#[L12-4]true [354] L12-4-->L700: Formula: (= v_~x~0_5 0) InVars {} OutVars{~x~0=v_~x~0_5} AuxVars[] AssignedVars[~x~0] 138#[L700]true [296] L700-->L701: Formula: (= v_~y~0_17 0) InVars {} OutVars{~y~0=v_~y~0_17} AuxVars[] AssignedVars[~y~0] 140#[L701]true [366] L701-->L701-1: Formula: (= v_~b1~0_7 0) InVars {} OutVars{~b1~0=v_~b1~0_7} AuxVars[] AssignedVars[~b1~0] 142#[L701-1]true [261] L701-1-->L702: Formula: (= v_~b2~0_7 0) InVars {} OutVars{~b2~0=v_~b2~0_7} AuxVars[] AssignedVars[~b2~0] 144#[L702]true [266] L702-->L-1-1: Formula: (= v_~X~0_7 0) InVars {} OutVars{~X~0=v_~X~0_7} AuxVars[] AssignedVars[~X~0] 146#[L-1-1]true [371] L-1-1-->L-1-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 148#[L-1-2]true [373] L-1-2-->L844: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_1|, ULTIMATE.start_main_#t~mem8#1=|v_ULTIMATE.start_main_#t~mem8#1_1|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_1|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_1|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_1|, ULTIMATE.start_main_#t~mem9#1=|v_ULTIMATE.start_main_#t~mem9#1_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_1|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_#t~mem8#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet7#1, ULTIMATE.start_main_#t~mem9#1, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_#t~pre4#1, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_~#t2~0#1.base] 150#[L844]true [310] L844-->L844-1: Formula: (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_2| 0) (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) 0) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) (= |v_#length_3| (store |v_#length_4| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 4)) (not (= |v_ULTIMATE.start_main_~#t1~0#1.base_2| 0)) (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 1) |v_#valid_4|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_4|, #valid=|v_#valid_5|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_3|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_2|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[#valid, #length, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset] 152#[L844-1]true [294] L844-1-->L844-2: Formula: (and (= |v_#length_5| (store |v_#length_6| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 4)) (= (select |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2|) 0) (= (store |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 1) |v_#valid_6|) (not (= |v_ULTIMATE.start_main_~#t2~0#1.base_2| 0)) (= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_2|) (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_main_~#t2~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_6|, #valid=|v_#valid_7|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_5|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_2|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_2|, #valid=|v_#valid_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t2~0#1.offset, #valid, #length, ULTIMATE.start_main_~#t2~0#1.base] 154#[L844-2]true [330] L844-2-->L845: Formula: (= |v_ULTIMATE.start_main_#t~pre4#1_2| |v_#pthreadsForks_1|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 156#[L845]true [358] L845-->L845-1: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 158#[L845-1]true [258] L845-1-->L845-2: Formula: (and (<= 0 |v_ULTIMATE.start_main_~#t1~0#1.offset_3|) (= (select |v_#valid_8| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) 1) (= (store |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3| (store (select |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) |v_ULTIMATE.start_main_~#t1~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre4#1_3|)) |v_#memory_int_3|) (<= (+ |v_ULTIMATE.start_main_~#t1~0#1.offset_3| 4) (select |v_#length_7| |v_ULTIMATE.start_main_~#t1~0#1.base_3|))) InVars {#valid=|v_#valid_8|, #memory_int=|v_#memory_int_4|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} OutVars{#valid=|v_#valid_8|, #memory_int=|v_#memory_int_3|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} AuxVars[] AssignedVars[#memory_int] 160#[L845-2]true [485] L845-2-->$Ultimate##0: Formula: (and (= |v_thr1Thread1of1ForFork1_#in~_#1.offset_4| 0) (= v_thr1Thread1of1ForFork1_thidvar1_2 0) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_4| 0) (= |v_ULTIMATE.start_main_#t~pre4#1_7| v_thr1Thread1of1ForFork1_thidvar0_2)) InVars {ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_4|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset_8|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|, thr1Thread1of1ForFork1_thidvar1=v_thr1Thread1of1ForFork1_thidvar1_2, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_4|, thr1Thread1of1ForFork1_thidvar0=v_thr1Thread1of1ForFork1_thidvar0_2, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base_8|, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_12|, thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_4|, thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_8|, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_30|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#in~_#1.base, thr1Thread1of1ForFork1_#in~_#1.offset, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset, thr1Thread1of1ForFork1_thidvar1, thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_thidvar0, thr1Thread1of1ForFork1_#res#1.base, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base, thr1Thread1of1ForFork1_~b21~0#1, thr1Thread1of1ForFork1_#res#1.offset, thr1Thread1of1ForFork1_~x1~0#1, thr1Thread1of1ForFork1_~y1~0#1, thr1Thread1of1ForFork1_~_#1.base] 162#[$Ultimate##0, L845-3]true [346] L845-3-->L845-4: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 354#[L845-4, $Ultimate##0]true [272] L845-4-->L846: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5#1] 356#[$Ultimate##0, L846]true [257] L846-->L846-1: Formula: (= |v_ULTIMATE.start_main_#t~pre6#1_2| |v_#pthreadsForks_4|) InVars {#pthreadsForks=|v_#pthreadsForks_4|} OutVars{#pthreadsForks=|v_#pthreadsForks_4|, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1] 358#[$Ultimate##0, L846-1]true [250] L846-1-->L846-2: Formula: (= (+ 1 |v_#pthreadsForks_6|) |v_#pthreadsForks_5|) InVars {#pthreadsForks=|v_#pthreadsForks_6|} OutVars{#pthreadsForks=|v_#pthreadsForks_5|} AuxVars[] AssignedVars[#pthreadsForks] 360#[L846-2, $Ultimate##0]true [271] L846-2-->L846-3: Formula: (and (<= (+ 4 |v_ULTIMATE.start_main_~#t2~0#1.offset_3|) (select |v_#length_8| |v_ULTIMATE.start_main_~#t2~0#1.base_3|)) (= (select |v_#valid_9| |v_ULTIMATE.start_main_~#t2~0#1.base_3|) 1) (= (store |v_#memory_int_6| |v_ULTIMATE.start_main_~#t2~0#1.base_3| (store (select |v_#memory_int_6| |v_ULTIMATE.start_main_~#t2~0#1.base_3|) |v_ULTIMATE.start_main_~#t2~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre6#1_3|)) |v_#memory_int_5|) (<= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_3|)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_3|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_3|, #valid=|v_#valid_9|, #memory_int=|v_#memory_int_6|, #length=|v_#length_8|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_3|} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_3|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_3|, #valid=|v_#valid_9|, #memory_int=|v_#memory_int_5|, #length=|v_#length_8|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_3|} AuxVars[] AssignedVars[#memory_int] 362#[L846-3, $Ultimate##0]true [482] L846-3-->$Ultimate##0: Formula: (and (= v_thr2Thread1of1ForFork0_thidvar2_2 0) (= |v_thr2Thread1of1ForFork0_#in~_#1.offset_4| 0) (= |v_ULTIMATE.start_main_#t~pre6#1_7| v_thr2Thread1of1ForFork0_thidvar0_2) (= v_thr2Thread1of1ForFork0_thidvar1_2 0) (= |v_thr2Thread1of1ForFork0_#in~_#1.base_4| 0)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_7|} OutVars{thr2Thread1of1ForFork0_~b12~0#1=|v_thr2Thread1of1ForFork0_~b12~0#1_12|, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_7|, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset=|v_thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset_8|, thr2Thread1of1ForFork0_#res#1.offset=|v_thr2Thread1of1ForFork0_#res#1.offset_4|, thr2Thread1of1ForFork0_~_#1.base=|v_thr2Thread1of1ForFork0_~_#1.base_4|, thr2Thread1of1ForFork0_~x2~0#1=|v_thr2Thread1of1ForFork0_~x2~0#1_8|, thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_4|, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_30|, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base=|v_thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base_8|, thr2Thread1of1ForFork0_thidvar0=v_thr2Thread1of1ForFork0_thidvar0_2, thr2Thread1of1ForFork0_thidvar1=v_thr2Thread1of1ForFork0_thidvar1_2, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_4|, thr2Thread1of1ForFork0_thidvar2=v_thr2Thread1of1ForFork0_thidvar2_2, thr2Thread1of1ForFork0_~_#1.offset=|v_thr2Thread1of1ForFork0_~_#1.offset_4|, thr2Thread1of1ForFork0_#res#1.base=|v_thr2Thread1of1ForFork0_#res#1.base_4|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~b12~0#1, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset, thr2Thread1of1ForFork0_#res#1.offset, thr2Thread1of1ForFork0_~_#1.base, thr2Thread1of1ForFork0_~x2~0#1, thr2Thread1of1ForFork0_#in~_#1.offset, thr2Thread1of1ForFork0_~y2~0#1, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base, thr2Thread1of1ForFork0_thidvar0, thr2Thread1of1ForFork0_thidvar1, thr2Thread1of1ForFork0_#in~_#1.base, thr2Thread1of1ForFork0_thidvar2, thr2Thread1of1ForFork0_~_#1.offset, thr2Thread1of1ForFork0_#res#1.base] 364#[L846-4, $Ultimate##0, $Ultimate##0]true [384] $Ultimate##0-->$Ultimate##3: Formula: (and (= |v_thr2Thread1of1ForFork0_~_#1.base_1| |v_thr2Thread1of1ForFork0_#in~_#1.base_1|) (= |v_thr2Thread1of1ForFork0_~_#1.offset_1| |v_thr2Thread1of1ForFork0_#in~_#1.offset_1|)) InVars {thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_1|, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_1|} OutVars{thr2Thread1of1ForFork0_~_#1.offset=|v_thr2Thread1of1ForFork0_~_#1.offset_1|, thr2Thread1of1ForFork0_~_#1.base=|v_thr2Thread1of1ForFork0_~_#1.base_1|, thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_1|, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~_#1.base, thr2Thread1of1ForFork0_~_#1.offset] 366#[L846-4, $Ultimate##0, $Ultimate##3]true [386] $Ultimate##3-->L823-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 368#[L823-1, L846-4, $Ultimate##0]true [2024-02-09 23:29:08,715 INFO L750 eck$LassoCheckResult]: Loop: 368#[L823-1, L846-4, $Ultimate##0]true [388] L823-1-->L775: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 371#[L846-4, $Ultimate##0, L775]true [392] L775-->L777: Formula: (= v_~b2~0_1 1) InVars {} OutVars{~b2~0=v_~b2~0_1} AuxVars[] AssignedVars[~b2~0] 373#[L846-4, $Ultimate##0, L777]true [395] L777-->L780: Formula: (= 2 v_~x~0_1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] 375#[L846-4, $Ultimate##0, L780]true [399] L780-->L783: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_1| v_~y~0_2) InVars {~y~0=v_~y~0_2} OutVars{~y~0=v_~y~0_2, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 377#[L846-4, $Ultimate##0, L783]true [403] L783-->L785: Formula: (not (= |v_thr2Thread1of1ForFork0_~y2~0#1_3| 0)) InVars {thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_3|} OutVars{thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_3|} AuxVars[] AssignedVars[] 379#[L846-4, $Ultimate##0, L785]true [407] L785-->L787: Formula: (= v_~b2~0_2 0) InVars {} OutVars{~b2~0=v_~b2~0_2} AuxVars[] AssignedVars[~b2~0] 381#[L787, L846-4, $Ultimate##0]true [409] L787-->L794: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_7| v_~y~0_3) InVars {~y~0=v_~y~0_3} OutVars{~y~0=v_~y~0_3, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_7|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 383#[L794, L846-4, $Ultimate##0]true [412] L794-->L823-1: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_11| 0) InVars {thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_11|} OutVars{thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_11|} AuxVars[] AssignedVars[] 368#[L823-1, L846-4, $Ultimate##0]true [2024-02-09 23:29:08,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:08,715 INFO L85 PathProgramCache]: Analyzing trace with hash 2079341359, now seen corresponding path program 1 times [2024-02-09 23:29:08,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:08,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322230684] [2024-02-09 23:29:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:08,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:08,726 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:08,736 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:08,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:08,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1093310352, now seen corresponding path program 1 times [2024-02-09 23:29:08,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:08,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527770023] [2024-02-09 23:29:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:08,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:08,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 23:29:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 23:29:08,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-09 23:29:08,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527770023] [2024-02-09 23:29:08,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527770023] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-09 23:29:08,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-09 23:29:08,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-09 23:29:08,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547336886] [2024-02-09 23:29:08,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-09 23:29:08,758 INFO L765 eck$LassoCheckResult]: loop already infeasible [2024-02-09 23:29:08,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-09 23:29:08,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-09 23:29:08,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-02-09 23:29:08,947 INFO L175 Difference]: Start difference. First operand has 142 places, 152 transitions, 550 flow. Second operand 7 states and 987 transitions. [2024-02-09 23:29:08,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 152 transitions, 550 flow. Second operand 7 states and 987 transitions. [2024-02-09 23:29:08,948 INFO L120 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 141 [2024-02-09 23:29:08,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-09 23:29:09,050 INFO L124 PetriNetUnfolderBase]: 200/1498 cut-off events. [2024-02-09 23:29:09,050 INFO L125 PetriNetUnfolderBase]: For 1051/1098 co-relation queries the response was YES. [2024-02-09 23:29:09,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 1498 events. 200/1498 cut-off events. For 1051/1098 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13658 event pairs, 2 based on Foata normal form. 15/1383 useless extension candidates. Maximal degree in co-relation 2515. Up to 113 conditions per place. [2024-02-09 23:29:09,066 INFO L140 encePairwiseOnDemand]: 124/141 looper letters, 36 selfloop transitions, 51 changer transitions 0/201 dead transitions. [2024-02-09 23:29:09,066 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 201 transitions, 931 flow [2024-02-09 23:29:09,067 INFO L231 Difference]: Finished difference. Result has 152 places, 187 transitions, 933 flow [2024-02-09 23:29:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-09 23:29:09,069 INFO L428 stractBuchiCegarLoop]: Abstraction has has 152 places, 187 transitions, 933 flow [2024-02-09 23:29:09,069 INFO L335 stractBuchiCegarLoop]: ======== Iteration 5 ============ [2024-02-09 23:29:09,069 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 152 places, 187 transitions, 933 flow [2024-02-09 23:29:09,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-09 23:29:09,075 INFO L124 PetriNetUnfolderBase]: 0/63 cut-off events. [2024-02-09 23:29:09,075 INFO L125 PetriNetUnfolderBase]: For 35/37 co-relation queries the response was YES. [2024-02-09 23:29:09,075 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2024-02-09 23:29:09,078 INFO L748 eck$LassoCheckResult]: Stem: 124#[$Ultimate##0]true [273] $Ultimate##0-->L-1: Formula: (= (select |v_#valid_1| 0) 0) InVars {#valid=|v_#valid_1|} OutVars{#valid=|v_#valid_1|} AuxVars[] AssignedVars[] 126#[L-1]true [280] L-1-->L12: Formula: (< 0 |v_#StackHeapBarrier_1|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|} AuxVars[] AssignedVars[] 128#[L12]true [320] L12-->L12-1: Formula: (and (= (select |v_#valid_2| 1) 1) (= 2 (select |v_#length_1| 1))) InVars {#length=|v_#length_1|, #valid=|v_#valid_2|} OutVars{#length=|v_#length_1|, #valid=|v_#valid_2|} AuxVars[] AssignedVars[] 130#[L12-1]true [338] L12-1-->L12-2: Formula: (= 48 (select (select |v_#memory_int_1| 1) 0)) InVars {#memory_int=|v_#memory_int_1|} OutVars{#memory_int=|v_#memory_int_1|} AuxVars[] AssignedVars[] 132#[L12-2]true [336] L12-2-->L12-3: Formula: (= (select (select |v_#memory_int_2| 1) 1) 0) InVars {#memory_int=|v_#memory_int_2|} OutVars{#memory_int=|v_#memory_int_2|} AuxVars[] AssignedVars[] 134#[L12-3]true [361] L12-3-->L12-4: Formula: (and (= (select |v_#length_2| 2) 10) (= (select |v_#valid_3| 2) 1)) InVars {#length=|v_#length_2|, #valid=|v_#valid_3|} OutVars{#length=|v_#length_2|, #valid=|v_#valid_3|} AuxVars[] AssignedVars[] 136#[L12-4]true [354] L12-4-->L700: Formula: (= v_~x~0_5 0) InVars {} OutVars{~x~0=v_~x~0_5} AuxVars[] AssignedVars[~x~0] 138#[L700]true [296] L700-->L701: Formula: (= v_~y~0_17 0) InVars {} OutVars{~y~0=v_~y~0_17} AuxVars[] AssignedVars[~y~0] 140#[L701]true [366] L701-->L701-1: Formula: (= v_~b1~0_7 0) InVars {} OutVars{~b1~0=v_~b1~0_7} AuxVars[] AssignedVars[~b1~0] 142#[L701-1]true [261] L701-1-->L702: Formula: (= v_~b2~0_7 0) InVars {} OutVars{~b2~0=v_~b2~0_7} AuxVars[] AssignedVars[~b2~0] 144#[L702]true [266] L702-->L-1-1: Formula: (= v_~X~0_7 0) InVars {} OutVars{~X~0=v_~X~0_7} AuxVars[] AssignedVars[~X~0] 146#[L-1-1]true [371] L-1-1-->L-1-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 148#[L-1-2]true [373] L-1-2-->L844: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_1|, ULTIMATE.start_main_#t~mem8#1=|v_ULTIMATE.start_main_#t~mem8#1_1|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_1|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_1|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_1|, ULTIMATE.start_main_#t~mem9#1=|v_ULTIMATE.start_main_#t~mem9#1_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_1|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_#t~mem8#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet7#1, ULTIMATE.start_main_#t~mem9#1, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_#t~pre4#1, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_~#t2~0#1.base] 150#[L844]true [310] L844-->L844-1: Formula: (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_2| 0) (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) 0) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) (= |v_#length_3| (store |v_#length_4| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 4)) (not (= |v_ULTIMATE.start_main_~#t1~0#1.base_2| 0)) (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 1) |v_#valid_4|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_4|, #valid=|v_#valid_5|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_3|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_2|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[#valid, #length, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset] 152#[L844-1]true [294] L844-1-->L844-2: Formula: (and (= |v_#length_5| (store |v_#length_6| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 4)) (= (select |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2|) 0) (= (store |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 1) |v_#valid_6|) (not (= |v_ULTIMATE.start_main_~#t2~0#1.base_2| 0)) (= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_2|) (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_main_~#t2~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_6|, #valid=|v_#valid_7|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_5|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_2|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_2|, #valid=|v_#valid_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t2~0#1.offset, #valid, #length, ULTIMATE.start_main_~#t2~0#1.base] 154#[L844-2]true [330] L844-2-->L845: Formula: (= |v_ULTIMATE.start_main_#t~pre4#1_2| |v_#pthreadsForks_1|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 156#[L845]true [358] L845-->L845-1: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 158#[L845-1]true [258] L845-1-->L845-2: Formula: (and (<= 0 |v_ULTIMATE.start_main_~#t1~0#1.offset_3|) (= (select |v_#valid_8| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) 1) (= (store |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3| (store (select |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) |v_ULTIMATE.start_main_~#t1~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre4#1_3|)) |v_#memory_int_3|) (<= (+ |v_ULTIMATE.start_main_~#t1~0#1.offset_3| 4) (select |v_#length_7| |v_ULTIMATE.start_main_~#t1~0#1.base_3|))) InVars {#valid=|v_#valid_8|, #memory_int=|v_#memory_int_4|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} OutVars{#valid=|v_#valid_8|, #memory_int=|v_#memory_int_3|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} AuxVars[] AssignedVars[#memory_int] 160#[L845-2]true [485] L845-2-->$Ultimate##0: Formula: (and (= |v_thr1Thread1of1ForFork1_#in~_#1.offset_4| 0) (= v_thr1Thread1of1ForFork1_thidvar1_2 0) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_4| 0) (= |v_ULTIMATE.start_main_#t~pre4#1_7| v_thr1Thread1of1ForFork1_thidvar0_2)) InVars {ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_4|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset_8|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|, thr1Thread1of1ForFork1_thidvar1=v_thr1Thread1of1ForFork1_thidvar1_2, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_4|, thr1Thread1of1ForFork1_thidvar0=v_thr1Thread1of1ForFork1_thidvar0_2, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base_8|, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_12|, thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_4|, thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_8|, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_30|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#in~_#1.base, thr1Thread1of1ForFork1_#in~_#1.offset, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset, thr1Thread1of1ForFork1_thidvar1, thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_thidvar0, thr1Thread1of1ForFork1_#res#1.base, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base, thr1Thread1of1ForFork1_~b21~0#1, thr1Thread1of1ForFork1_#res#1.offset, thr1Thread1of1ForFork1_~x1~0#1, thr1Thread1of1ForFork1_~y1~0#1, thr1Thread1of1ForFork1_~_#1.base] 162#[$Ultimate##0, L845-3]true [346] L845-3-->L845-4: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 354#[L845-4, $Ultimate##0]true [272] L845-4-->L846: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5#1] 356#[$Ultimate##0, L846]true [257] L846-->L846-1: Formula: (= |v_ULTIMATE.start_main_#t~pre6#1_2| |v_#pthreadsForks_4|) InVars {#pthreadsForks=|v_#pthreadsForks_4|} OutVars{#pthreadsForks=|v_#pthreadsForks_4|, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1] 358#[$Ultimate##0, L846-1]true [250] L846-1-->L846-2: Formula: (= (+ 1 |v_#pthreadsForks_6|) |v_#pthreadsForks_5|) InVars {#pthreadsForks=|v_#pthreadsForks_6|} OutVars{#pthreadsForks=|v_#pthreadsForks_5|} AuxVars[] AssignedVars[#pthreadsForks] 360#[L846-2, $Ultimate##0]true [271] L846-2-->L846-3: Formula: (and (<= (+ 4 |v_ULTIMATE.start_main_~#t2~0#1.offset_3|) (select |v_#length_8| |v_ULTIMATE.start_main_~#t2~0#1.base_3|)) (= (select |v_#valid_9| |v_ULTIMATE.start_main_~#t2~0#1.base_3|) 1) (= (store |v_#memory_int_6| |v_ULTIMATE.start_main_~#t2~0#1.base_3| (store (select |v_#memory_int_6| |v_ULTIMATE.start_main_~#t2~0#1.base_3|) |v_ULTIMATE.start_main_~#t2~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre6#1_3|)) |v_#memory_int_5|) (<= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_3|)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_3|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_3|, #valid=|v_#valid_9|, #memory_int=|v_#memory_int_6|, #length=|v_#length_8|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_3|} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_3|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_3|, #valid=|v_#valid_9|, #memory_int=|v_#memory_int_5|, #length=|v_#length_8|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_3|} AuxVars[] AssignedVars[#memory_int] 362#[L846-3, $Ultimate##0]true [482] L846-3-->$Ultimate##0: Formula: (and (= v_thr2Thread1of1ForFork0_thidvar2_2 0) (= |v_thr2Thread1of1ForFork0_#in~_#1.offset_4| 0) (= |v_ULTIMATE.start_main_#t~pre6#1_7| v_thr2Thread1of1ForFork0_thidvar0_2) (= v_thr2Thread1of1ForFork0_thidvar1_2 0) (= |v_thr2Thread1of1ForFork0_#in~_#1.base_4| 0)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_7|} OutVars{thr2Thread1of1ForFork0_~b12~0#1=|v_thr2Thread1of1ForFork0_~b12~0#1_12|, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_7|, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset=|v_thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset_8|, thr2Thread1of1ForFork0_#res#1.offset=|v_thr2Thread1of1ForFork0_#res#1.offset_4|, thr2Thread1of1ForFork0_~_#1.base=|v_thr2Thread1of1ForFork0_~_#1.base_4|, thr2Thread1of1ForFork0_~x2~0#1=|v_thr2Thread1of1ForFork0_~x2~0#1_8|, thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_4|, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_30|, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base=|v_thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base_8|, thr2Thread1of1ForFork0_thidvar0=v_thr2Thread1of1ForFork0_thidvar0_2, thr2Thread1of1ForFork0_thidvar1=v_thr2Thread1of1ForFork0_thidvar1_2, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_4|, thr2Thread1of1ForFork0_thidvar2=v_thr2Thread1of1ForFork0_thidvar2_2, thr2Thread1of1ForFork0_~_#1.offset=|v_thr2Thread1of1ForFork0_~_#1.offset_4|, thr2Thread1of1ForFork0_#res#1.base=|v_thr2Thread1of1ForFork0_#res#1.base_4|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~b12~0#1, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset, thr2Thread1of1ForFork0_#res#1.offset, thr2Thread1of1ForFork0_~_#1.base, thr2Thread1of1ForFork0_~x2~0#1, thr2Thread1of1ForFork0_#in~_#1.offset, thr2Thread1of1ForFork0_~y2~0#1, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base, thr2Thread1of1ForFork0_thidvar0, thr2Thread1of1ForFork0_thidvar1, thr2Thread1of1ForFork0_#in~_#1.base, thr2Thread1of1ForFork0_thidvar2, thr2Thread1of1ForFork0_~_#1.offset, thr2Thread1of1ForFork0_#res#1.base] 364#[L846-4, $Ultimate##0, $Ultimate##0]true [384] $Ultimate##0-->$Ultimate##3: Formula: (and (= |v_thr2Thread1of1ForFork0_~_#1.base_1| |v_thr2Thread1of1ForFork0_#in~_#1.base_1|) (= |v_thr2Thread1of1ForFork0_~_#1.offset_1| |v_thr2Thread1of1ForFork0_#in~_#1.offset_1|)) InVars {thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_1|, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_1|} OutVars{thr2Thread1of1ForFork0_~_#1.offset=|v_thr2Thread1of1ForFork0_~_#1.offset_1|, thr2Thread1of1ForFork0_~_#1.base=|v_thr2Thread1of1ForFork0_~_#1.base_1|, thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_1|, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~_#1.base, thr2Thread1of1ForFork0_~_#1.offset] 366#[L846-4, $Ultimate##0, $Ultimate##3]true [386] $Ultimate##3-->L823-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 368#[L823-1, L846-4, $Ultimate##0]true [388] L823-1-->L775: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 371#[L846-4, $Ultimate##0, L775]true [392] L775-->L777: Formula: (= v_~b2~0_1 1) InVars {} OutVars{~b2~0=v_~b2~0_1} AuxVars[] AssignedVars[~b2~0] 373#[L846-4, $Ultimate##0, L777]true [395] L777-->L780: Formula: (= 2 v_~x~0_1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] 375#[L846-4, $Ultimate##0, L780]true [399] L780-->L783: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_1| v_~y~0_2) InVars {~y~0=v_~y~0_2} OutVars{~y~0=v_~y~0_2, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 377#[L846-4, $Ultimate##0, L783]true [403] L783-->L785: Formula: (not (= |v_thr2Thread1of1ForFork0_~y2~0#1_3| 0)) InVars {thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_3|} OutVars{thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_3|} AuxVars[] AssignedVars[] 379#[L846-4, $Ultimate##0, L785]true [407] L785-->L787: Formula: (= v_~b2~0_2 0) InVars {} OutVars{~b2~0=v_~b2~0_2} AuxVars[] AssignedVars[~b2~0] 381#[L787, L846-4, $Ultimate##0]true [409] L787-->L794: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_7| v_~y~0_3) InVars {~y~0=v_~y~0_3} OutVars{~y~0=v_~y~0_3, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_7|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 383#[L794, L846-4, $Ultimate##0]true [2024-02-09 23:29:09,078 INFO L750 eck$LassoCheckResult]: Loop: 383#[L794, L846-4, $Ultimate##0]true [411] L794-->L792: Formula: (not (= |v_thr2Thread1of1ForFork0_~y2~0#1_9| 0)) InVars {thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_9|} OutVars{thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_9|} AuxVars[] AssignedVars[] 440#[L792, L846-4, $Ultimate##0]true [416] L792-->L794: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_13| v_~y~0_4) InVars {~y~0=v_~y~0_4} OutVars{~y~0=v_~y~0_4, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_13|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 383#[L794, L846-4, $Ultimate##0]true [2024-02-09 23:29:09,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:09,078 INFO L85 PathProgramCache]: Analyzing trace with hash 236315582, now seen corresponding path program 1 times [2024-02-09 23:29:09,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:09,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751427344] [2024-02-09 23:29:09,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:09,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 23:29:09,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 23:29:09,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-09 23:29:09,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751427344] [2024-02-09 23:29:09,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751427344] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-09 23:29:09,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-09 23:29:09,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-09 23:29:09,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610016943] [2024-02-09 23:29:09,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-09 23:29:09,127 INFO L753 eck$LassoCheckResult]: stem already infeasible [2024-02-09 23:29:09,128 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:09,128 INFO L85 PathProgramCache]: Analyzing trace with hash 14118, now seen corresponding path program 1 times [2024-02-09 23:29:09,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:09,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259577637] [2024-02-09 23:29:09,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:09,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:09,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-09 23:29:09,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-09 23:29:09,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-09 23:29:09,264 INFO L175 Difference]: Start difference. First operand has 152 places, 187 transitions, 933 flow. Second operand 5 states and 705 transitions. [2024-02-09 23:29:09,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 187 transitions, 933 flow. Second operand 5 states and 705 transitions. [2024-02-09 23:29:09,268 INFO L120 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 141 [2024-02-09 23:29:09,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-09 23:29:09,359 INFO L124 PetriNetUnfolderBase]: 160/1303 cut-off events. [2024-02-09 23:29:09,359 INFO L125 PetriNetUnfolderBase]: For 1981/2079 co-relation queries the response was YES. [2024-02-09 23:29:09,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 1303 events. 160/1303 cut-off events. For 1981/2079 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11543 event pairs, 9 based on Foata normal form. 40/1246 useless extension candidates. Maximal degree in co-relation 2568. Up to 95 conditions per place. [2024-02-09 23:29:09,369 INFO L140 encePairwiseOnDemand]: 126/141 looper letters, 36 selfloop transitions, 39 changer transitions 0/189 dead transitions. [2024-02-09 23:29:09,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 189 transitions, 1088 flow [2024-02-09 23:29:09,370 INFO L231 Difference]: Finished difference. Result has 156 places, 179 transitions, 967 flow [2024-02-09 23:29:09,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-09 23:29:09,372 INFO L428 stractBuchiCegarLoop]: Abstraction has has 156 places, 179 transitions, 967 flow [2024-02-09 23:29:09,372 INFO L335 stractBuchiCegarLoop]: ======== Iteration 6 ============ [2024-02-09 23:29:09,372 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 156 places, 179 transitions, 967 flow [2024-02-09 23:29:09,377 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-09 23:29:09,377 INFO L124 PetriNetUnfolderBase]: 0/71 cut-off events. [2024-02-09 23:29:09,377 INFO L125 PetriNetUnfolderBase]: For 130/134 co-relation queries the response was YES. [2024-02-09 23:29:09,377 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2024-02-09 23:29:09,379 INFO L748 eck$LassoCheckResult]: Stem: 124#[$Ultimate##0]true [273] $Ultimate##0-->L-1: Formula: (= (select |v_#valid_1| 0) 0) InVars {#valid=|v_#valid_1|} OutVars{#valid=|v_#valid_1|} AuxVars[] AssignedVars[] 126#[L-1]true [280] L-1-->L12: Formula: (< 0 |v_#StackHeapBarrier_1|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|} AuxVars[] AssignedVars[] 128#[L12]true [320] L12-->L12-1: Formula: (and (= (select |v_#valid_2| 1) 1) (= 2 (select |v_#length_1| 1))) InVars {#length=|v_#length_1|, #valid=|v_#valid_2|} OutVars{#length=|v_#length_1|, #valid=|v_#valid_2|} AuxVars[] AssignedVars[] 130#[L12-1]true [338] L12-1-->L12-2: Formula: (= 48 (select (select |v_#memory_int_1| 1) 0)) InVars {#memory_int=|v_#memory_int_1|} OutVars{#memory_int=|v_#memory_int_1|} AuxVars[] AssignedVars[] 132#[L12-2]true [336] L12-2-->L12-3: Formula: (= (select (select |v_#memory_int_2| 1) 1) 0) InVars {#memory_int=|v_#memory_int_2|} OutVars{#memory_int=|v_#memory_int_2|} AuxVars[] AssignedVars[] 134#[L12-3]true [361] L12-3-->L12-4: Formula: (and (= (select |v_#length_2| 2) 10) (= (select |v_#valid_3| 2) 1)) InVars {#length=|v_#length_2|, #valid=|v_#valid_3|} OutVars{#length=|v_#length_2|, #valid=|v_#valid_3|} AuxVars[] AssignedVars[] 136#[L12-4]true [354] L12-4-->L700: Formula: (= v_~x~0_5 0) InVars {} OutVars{~x~0=v_~x~0_5} AuxVars[] AssignedVars[~x~0] 138#[L700]true [296] L700-->L701: Formula: (= v_~y~0_17 0) InVars {} OutVars{~y~0=v_~y~0_17} AuxVars[] AssignedVars[~y~0] 140#[L701]true [366] L701-->L701-1: Formula: (= v_~b1~0_7 0) InVars {} OutVars{~b1~0=v_~b1~0_7} AuxVars[] AssignedVars[~b1~0] 142#[L701-1]true [261] L701-1-->L702: Formula: (= v_~b2~0_7 0) InVars {} OutVars{~b2~0=v_~b2~0_7} AuxVars[] AssignedVars[~b2~0] 144#[L702]true [266] L702-->L-1-1: Formula: (= v_~X~0_7 0) InVars {} OutVars{~X~0=v_~X~0_7} AuxVars[] AssignedVars[~X~0] 146#[L-1-1]true [371] L-1-1-->L-1-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 148#[L-1-2]true [373] L-1-2-->L844: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_1|, ULTIMATE.start_main_#t~mem8#1=|v_ULTIMATE.start_main_#t~mem8#1_1|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_1|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_1|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_1|, ULTIMATE.start_main_#t~mem9#1=|v_ULTIMATE.start_main_#t~mem9#1_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_1|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_#t~mem8#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet7#1, ULTIMATE.start_main_#t~mem9#1, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_#t~pre4#1, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_~#t2~0#1.base] 150#[L844]true [310] L844-->L844-1: Formula: (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_2| 0) (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) 0) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) (= |v_#length_3| (store |v_#length_4| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 4)) (not (= |v_ULTIMATE.start_main_~#t1~0#1.base_2| 0)) (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 1) |v_#valid_4|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_4|, #valid=|v_#valid_5|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_3|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_2|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[#valid, #length, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset] 152#[L844-1]true [294] L844-1-->L844-2: Formula: (and (= |v_#length_5| (store |v_#length_6| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 4)) (= (select |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2|) 0) (= (store |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 1) |v_#valid_6|) (not (= |v_ULTIMATE.start_main_~#t2~0#1.base_2| 0)) (= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_2|) (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_main_~#t2~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_6|, #valid=|v_#valid_7|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_5|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_2|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_2|, #valid=|v_#valid_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t2~0#1.offset, #valid, #length, ULTIMATE.start_main_~#t2~0#1.base] 154#[L844-2]true [330] L844-2-->L845: Formula: (= |v_ULTIMATE.start_main_#t~pre4#1_2| |v_#pthreadsForks_1|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 156#[L845]true [358] L845-->L845-1: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 158#[L845-1]true [258] L845-1-->L845-2: Formula: (and (<= 0 |v_ULTIMATE.start_main_~#t1~0#1.offset_3|) (= (select |v_#valid_8| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) 1) (= (store |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3| (store (select |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) |v_ULTIMATE.start_main_~#t1~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre4#1_3|)) |v_#memory_int_3|) (<= (+ |v_ULTIMATE.start_main_~#t1~0#1.offset_3| 4) (select |v_#length_7| |v_ULTIMATE.start_main_~#t1~0#1.base_3|))) InVars {#valid=|v_#valid_8|, #memory_int=|v_#memory_int_4|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} OutVars{#valid=|v_#valid_8|, #memory_int=|v_#memory_int_3|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} AuxVars[] AssignedVars[#memory_int] 160#[L845-2]true [485] L845-2-->$Ultimate##0: Formula: (and (= |v_thr1Thread1of1ForFork1_#in~_#1.offset_4| 0) (= v_thr1Thread1of1ForFork1_thidvar1_2 0) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_4| 0) (= |v_ULTIMATE.start_main_#t~pre4#1_7| v_thr1Thread1of1ForFork1_thidvar0_2)) InVars {ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_4|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset_8|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|, thr1Thread1of1ForFork1_thidvar1=v_thr1Thread1of1ForFork1_thidvar1_2, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_4|, thr1Thread1of1ForFork1_thidvar0=v_thr1Thread1of1ForFork1_thidvar0_2, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base_8|, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_12|, thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_4|, thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_8|, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_30|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#in~_#1.base, thr1Thread1of1ForFork1_#in~_#1.offset, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset, thr1Thread1of1ForFork1_thidvar1, thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_thidvar0, thr1Thread1of1ForFork1_#res#1.base, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base, thr1Thread1of1ForFork1_~b21~0#1, thr1Thread1of1ForFork1_#res#1.offset, thr1Thread1of1ForFork1_~x1~0#1, thr1Thread1of1ForFork1_~y1~0#1, thr1Thread1of1ForFork1_~_#1.base] 162#[$Ultimate##0, L845-3]true [346] L845-3-->L845-4: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 354#[L845-4, $Ultimate##0]true [272] L845-4-->L846: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5#1] 356#[$Ultimate##0, L846]true [257] L846-->L846-1: Formula: (= |v_ULTIMATE.start_main_#t~pre6#1_2| |v_#pthreadsForks_4|) InVars {#pthreadsForks=|v_#pthreadsForks_4|} OutVars{#pthreadsForks=|v_#pthreadsForks_4|, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1] 358#[$Ultimate##0, L846-1]true [250] L846-1-->L846-2: Formula: (= (+ 1 |v_#pthreadsForks_6|) |v_#pthreadsForks_5|) InVars {#pthreadsForks=|v_#pthreadsForks_6|} OutVars{#pthreadsForks=|v_#pthreadsForks_5|} AuxVars[] AssignedVars[#pthreadsForks] 360#[L846-2, $Ultimate##0]true [271] L846-2-->L846-3: Formula: (and (<= (+ 4 |v_ULTIMATE.start_main_~#t2~0#1.offset_3|) (select |v_#length_8| |v_ULTIMATE.start_main_~#t2~0#1.base_3|)) (= (select |v_#valid_9| |v_ULTIMATE.start_main_~#t2~0#1.base_3|) 1) (= (store |v_#memory_int_6| |v_ULTIMATE.start_main_~#t2~0#1.base_3| (store (select |v_#memory_int_6| |v_ULTIMATE.start_main_~#t2~0#1.base_3|) |v_ULTIMATE.start_main_~#t2~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre6#1_3|)) |v_#memory_int_5|) (<= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_3|)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_3|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_3|, #valid=|v_#valid_9|, #memory_int=|v_#memory_int_6|, #length=|v_#length_8|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_3|} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_3|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_3|, #valid=|v_#valid_9|, #memory_int=|v_#memory_int_5|, #length=|v_#length_8|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_3|} AuxVars[] AssignedVars[#memory_int] 362#[L846-3, $Ultimate##0]true [482] L846-3-->$Ultimate##0: Formula: (and (= v_thr2Thread1of1ForFork0_thidvar2_2 0) (= |v_thr2Thread1of1ForFork0_#in~_#1.offset_4| 0) (= |v_ULTIMATE.start_main_#t~pre6#1_7| v_thr2Thread1of1ForFork0_thidvar0_2) (= v_thr2Thread1of1ForFork0_thidvar1_2 0) (= |v_thr2Thread1of1ForFork0_#in~_#1.base_4| 0)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_7|} OutVars{thr2Thread1of1ForFork0_~b12~0#1=|v_thr2Thread1of1ForFork0_~b12~0#1_12|, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_7|, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset=|v_thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset_8|, thr2Thread1of1ForFork0_#res#1.offset=|v_thr2Thread1of1ForFork0_#res#1.offset_4|, thr2Thread1of1ForFork0_~_#1.base=|v_thr2Thread1of1ForFork0_~_#1.base_4|, thr2Thread1of1ForFork0_~x2~0#1=|v_thr2Thread1of1ForFork0_~x2~0#1_8|, thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_4|, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_30|, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base=|v_thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base_8|, thr2Thread1of1ForFork0_thidvar0=v_thr2Thread1of1ForFork0_thidvar0_2, thr2Thread1of1ForFork0_thidvar1=v_thr2Thread1of1ForFork0_thidvar1_2, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_4|, thr2Thread1of1ForFork0_thidvar2=v_thr2Thread1of1ForFork0_thidvar2_2, thr2Thread1of1ForFork0_~_#1.offset=|v_thr2Thread1of1ForFork0_~_#1.offset_4|, thr2Thread1of1ForFork0_#res#1.base=|v_thr2Thread1of1ForFork0_#res#1.base_4|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~b12~0#1, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset, thr2Thread1of1ForFork0_#res#1.offset, thr2Thread1of1ForFork0_~_#1.base, thr2Thread1of1ForFork0_~x2~0#1, thr2Thread1of1ForFork0_#in~_#1.offset, thr2Thread1of1ForFork0_~y2~0#1, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base, thr2Thread1of1ForFork0_thidvar0, thr2Thread1of1ForFork0_thidvar1, thr2Thread1of1ForFork0_#in~_#1.base, thr2Thread1of1ForFork0_thidvar2, thr2Thread1of1ForFork0_~_#1.offset, thr2Thread1of1ForFork0_#res#1.base] 364#[L846-4, $Ultimate##0, $Ultimate##0]true [384] $Ultimate##0-->$Ultimate##3: Formula: (and (= |v_thr2Thread1of1ForFork0_~_#1.base_1| |v_thr2Thread1of1ForFork0_#in~_#1.base_1|) (= |v_thr2Thread1of1ForFork0_~_#1.offset_1| |v_thr2Thread1of1ForFork0_#in~_#1.offset_1|)) InVars {thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_1|, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_1|} OutVars{thr2Thread1of1ForFork0_~_#1.offset=|v_thr2Thread1of1ForFork0_~_#1.offset_1|, thr2Thread1of1ForFork0_~_#1.base=|v_thr2Thread1of1ForFork0_~_#1.base_1|, thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_1|, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~_#1.base, thr2Thread1of1ForFork0_~_#1.offset] 366#[L846-4, $Ultimate##0, $Ultimate##3]true [386] $Ultimate##3-->L823-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 368#[L823-1, L846-4, $Ultimate##0]true [388] L823-1-->L775: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 371#[L846-4, $Ultimate##0, L775]true [392] L775-->L777: Formula: (= v_~b2~0_1 1) InVars {} OutVars{~b2~0=v_~b2~0_1} AuxVars[] AssignedVars[~b2~0] 373#[L846-4, $Ultimate##0, L777]true [395] L777-->L780: Formula: (= 2 v_~x~0_1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] 375#[L846-4, $Ultimate##0, L780]true [399] L780-->L783: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_1| v_~y~0_2) InVars {~y~0=v_~y~0_2} OutVars{~y~0=v_~y~0_2, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 377#[L846-4, $Ultimate##0, L783]true [404] L783-->L798: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_5| 0) InVars {thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_5|} OutVars{thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_5|} AuxVars[] AssignedVars[] 485#[L846-4, $Ultimate##0, L798]true [408] L798-->L800: Formula: (= 2 v_~y~0_5) InVars {} OutVars{~y~0=v_~y~0_5} AuxVars[] AssignedVars[~y~0] 487#[L800, L846-4, $Ultimate##0]true [410] L800-->L803: Formula: (= |v_thr2Thread1of1ForFork0_~x2~0#1_1| v_~x~0_2) InVars {~x~0=v_~x~0_2} OutVars{thr2Thread1of1ForFork0_~x2~0#1=|v_thr2Thread1of1ForFork0_~x2~0#1_1|, ~x~0=v_~x~0_2} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~x2~0#1] 489#[L803, L846-4, $Ultimate##0]true [414] L803-->L805: Formula: (not (= |v_thr2Thread1of1ForFork0_~x2~0#1_3| 2)) InVars {thr2Thread1of1ForFork0_~x2~0#1=|v_thr2Thread1of1ForFork0_~x2~0#1_3|} OutVars{thr2Thread1of1ForFork0_~x2~0#1=|v_thr2Thread1of1ForFork0_~x2~0#1_3|} AuxVars[] AssignedVars[] 491#[L846-4, $Ultimate##0, L805]true [417] L805-->L807: Formula: (= v_~b2~0_4 0) InVars {} OutVars{~b2~0=v_~b2~0_4} AuxVars[] AssignedVars[~b2~0] 493#[L846-4, $Ultimate##0, L807]true [418] L807-->L814: Formula: (= v_~b1~0_1 |v_thr2Thread1of1ForFork0_~b12~0#1_1|) InVars {~b1~0=v_~b1~0_1} OutVars{~b1~0=v_~b1~0_1, thr2Thread1of1ForFork0_~b12~0#1=|v_thr2Thread1of1ForFork0_~b12~0#1_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~b12~0#1] 495#[L814, L846-4, $Ultimate##0]true [2024-02-09 23:29:09,379 INFO L750 eck$LassoCheckResult]: Loop: 495#[L814, L846-4, $Ultimate##0]true [419] L814-->L812: Formula: (<= 1 |v_thr2Thread1of1ForFork0_~b12~0#1_3|) InVars {thr2Thread1of1ForFork0_~b12~0#1=|v_thr2Thread1of1ForFork0_~b12~0#1_3|} OutVars{thr2Thread1of1ForFork0_~b12~0#1=|v_thr2Thread1of1ForFork0_~b12~0#1_3|} AuxVars[] AssignedVars[] 498#[L846-4, $Ultimate##0, L812]true [422] L812-->L814: Formula: (= v_~b1~0_2 |v_thr2Thread1of1ForFork0_~b12~0#1_7|) InVars {~b1~0=v_~b1~0_2} OutVars{~b1~0=v_~b1~0_2, thr2Thread1of1ForFork0_~b12~0#1=|v_thr2Thread1of1ForFork0_~b12~0#1_7|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~b12~0#1] 495#[L814, L846-4, $Ultimate##0]true [2024-02-09 23:29:09,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:09,379 INFO L85 PathProgramCache]: Analyzing trace with hash 656098880, now seen corresponding path program 1 times [2024-02-09 23:29:09,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:09,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126900796] [2024-02-09 23:29:09,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:09,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-09 23:29:09,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-09 23:29:09,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-09 23:29:09,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126900796] [2024-02-09 23:29:09,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126900796] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-09 23:29:09,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-09 23:29:09,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-09 23:29:09,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294125916] [2024-02-09 23:29:09,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-09 23:29:09,442 INFO L753 eck$LassoCheckResult]: stem already infeasible [2024-02-09 23:29:09,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:09,443 INFO L85 PathProgramCache]: Analyzing trace with hash 14372, now seen corresponding path program 1 times [2024-02-09 23:29:09,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:09,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016829090] [2024-02-09 23:29:09,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:09,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,449 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:09,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-09 23:29:09,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-09 23:29:09,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-09 23:29:09,506 INFO L175 Difference]: Start difference. First operand has 156 places, 179 transitions, 967 flow. Second operand 5 states and 705 transitions. [2024-02-09 23:29:09,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 179 transitions, 967 flow. Second operand 5 states and 705 transitions. [2024-02-09 23:29:09,507 INFO L120 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 141 [2024-02-09 23:29:09,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-09 23:29:09,559 INFO L124 PetriNetUnfolderBase]: 79/792 cut-off events. [2024-02-09 23:29:09,559 INFO L125 PetriNetUnfolderBase]: For 1055/1075 co-relation queries the response was YES. [2024-02-09 23:29:09,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1661 conditions, 792 events. 79/792 cut-off events. For 1055/1075 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6181 event pairs, 1 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 1522. Up to 49 conditions per place. [2024-02-09 23:29:09,564 INFO L140 encePairwiseOnDemand]: 136/141 looper letters, 10 selfloop transitions, 7 changer transitions 0/182 dead transitions. [2024-02-09 23:29:09,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 182 transitions, 973 flow [2024-02-09 23:29:09,565 INFO L231 Difference]: Finished difference. Result has 164 places, 180 transitions, 973 flow [2024-02-09 23:29:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-02-09 23:29:09,567 INFO L428 stractBuchiCegarLoop]: Abstraction has has 164 places, 180 transitions, 973 flow [2024-02-09 23:29:09,567 INFO L335 stractBuchiCegarLoop]: ======== Iteration 7 ============ [2024-02-09 23:29:09,567 INFO L84 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 164 places, 180 transitions, 973 flow [2024-02-09 23:29:09,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-09 23:29:09,580 INFO L124 PetriNetUnfolderBase]: 5/162 cut-off events. [2024-02-09 23:29:09,581 INFO L125 PetriNetUnfolderBase]: For 443/452 co-relation queries the response was YES. [2024-02-09 23:29:09,581 INFO L88 BuchiIsEmpty]: Finished buchiIsEmpty language is not empty [2024-02-09 23:29:09,583 INFO L748 eck$LassoCheckResult]: Stem: 124#[$Ultimate##0]true [273] $Ultimate##0-->L-1: Formula: (= (select |v_#valid_1| 0) 0) InVars {#valid=|v_#valid_1|} OutVars{#valid=|v_#valid_1|} AuxVars[] AssignedVars[] 126#[L-1]true [280] L-1-->L12: Formula: (< 0 |v_#StackHeapBarrier_1|) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|} AuxVars[] AssignedVars[] 128#[L12]true [320] L12-->L12-1: Formula: (and (= (select |v_#valid_2| 1) 1) (= 2 (select |v_#length_1| 1))) InVars {#length=|v_#length_1|, #valid=|v_#valid_2|} OutVars{#length=|v_#length_1|, #valid=|v_#valid_2|} AuxVars[] AssignedVars[] 130#[L12-1]true [338] L12-1-->L12-2: Formula: (= 48 (select (select |v_#memory_int_1| 1) 0)) InVars {#memory_int=|v_#memory_int_1|} OutVars{#memory_int=|v_#memory_int_1|} AuxVars[] AssignedVars[] 132#[L12-2]true [336] L12-2-->L12-3: Formula: (= (select (select |v_#memory_int_2| 1) 1) 0) InVars {#memory_int=|v_#memory_int_2|} OutVars{#memory_int=|v_#memory_int_2|} AuxVars[] AssignedVars[] 134#[L12-3]true [361] L12-3-->L12-4: Formula: (and (= (select |v_#length_2| 2) 10) (= (select |v_#valid_3| 2) 1)) InVars {#length=|v_#length_2|, #valid=|v_#valid_3|} OutVars{#length=|v_#length_2|, #valid=|v_#valid_3|} AuxVars[] AssignedVars[] 136#[L12-4]true [354] L12-4-->L700: Formula: (= v_~x~0_5 0) InVars {} OutVars{~x~0=v_~x~0_5} AuxVars[] AssignedVars[~x~0] 138#[L700]true [296] L700-->L701: Formula: (= v_~y~0_17 0) InVars {} OutVars{~y~0=v_~y~0_17} AuxVars[] AssignedVars[~y~0] 140#[L701]true [366] L701-->L701-1: Formula: (= v_~b1~0_7 0) InVars {} OutVars{~b1~0=v_~b1~0_7} AuxVars[] AssignedVars[~b1~0] 142#[L701-1]true [261] L701-1-->L702: Formula: (= v_~b2~0_7 0) InVars {} OutVars{~b2~0=v_~b2~0_7} AuxVars[] AssignedVars[~b2~0] 144#[L702]true [266] L702-->L-1-1: Formula: (= v_~X~0_7 0) InVars {} OutVars{~X~0=v_~X~0_7} AuxVars[] AssignedVars[~X~0] 146#[L-1-1]true [371] L-1-1-->L-1-2: Formula: true InVars {} OutVars{ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#res#1] 148#[L-1-2]true [373] L-1-2-->L844: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_1|, ULTIMATE.start_main_#t~mem8#1=|v_ULTIMATE.start_main_#t~mem8#1_1|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_1|, ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_1|, ULTIMATE.start_main_#t~nondet7#1=|v_ULTIMATE.start_main_#t~nondet7#1_1|, ULTIMATE.start_main_#t~mem9#1=|v_ULTIMATE.start_main_#t~mem9#1_1|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_1|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_1|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_1|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1, ULTIMATE.start_main_#t~mem8#1, ULTIMATE.start_main_~#t2~0#1.offset, ULTIMATE.start_main_#t~nondet5#1, ULTIMATE.start_main_#t~nondet7#1, ULTIMATE.start_main_#t~mem9#1, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_#t~pre4#1, ULTIMATE.start_main_~#t1~0#1.offset, ULTIMATE.start_main_~#t2~0#1.base] 150#[L844]true [310] L844-->L844-1: Formula: (and (= |v_ULTIMATE.start_main_~#t1~0#1.offset_2| 0) (= (select |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) 0) (< |v_#StackHeapBarrier_2| |v_ULTIMATE.start_main_~#t1~0#1.base_2|) (= |v_#length_3| (store |v_#length_4| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 4)) (not (= |v_ULTIMATE.start_main_~#t1~0#1.base_2| 0)) (= (store |v_#valid_5| |v_ULTIMATE.start_main_~#t1~0#1.base_2| 1) |v_#valid_4|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_4|, #valid=|v_#valid_5|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_2|, #length=|v_#length_3|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_2|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_2|, #valid=|v_#valid_4|} AuxVars[] AssignedVars[#valid, #length, ULTIMATE.start_main_~#t1~0#1.base, ULTIMATE.start_main_~#t1~0#1.offset] 152#[L844-1]true [294] L844-1-->L844-2: Formula: (and (= |v_#length_5| (store |v_#length_6| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 4)) (= (select |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2|) 0) (= (store |v_#valid_7| |v_ULTIMATE.start_main_~#t2~0#1.base_2| 1) |v_#valid_6|) (not (= |v_ULTIMATE.start_main_~#t2~0#1.base_2| 0)) (= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_2|) (< |v_#StackHeapBarrier_3| |v_ULTIMATE.start_main_~#t2~0#1.base_2|)) InVars {#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_6|, #valid=|v_#valid_7|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_3|, #length=|v_#length_5|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_2|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_2|, #valid=|v_#valid_6|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#t2~0#1.offset, #valid, #length, ULTIMATE.start_main_~#t2~0#1.base] 154#[L844-2]true [330] L844-2-->L845: Formula: (= |v_ULTIMATE.start_main_#t~pre4#1_2| |v_#pthreadsForks_1|) InVars {#pthreadsForks=|v_#pthreadsForks_1|} OutVars{#pthreadsForks=|v_#pthreadsForks_1|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 156#[L845]true [358] L845-->L845-1: Formula: (= (+ 1 |v_#pthreadsForks_3|) |v_#pthreadsForks_2|) InVars {#pthreadsForks=|v_#pthreadsForks_3|} OutVars{#pthreadsForks=|v_#pthreadsForks_2|} AuxVars[] AssignedVars[#pthreadsForks] 158#[L845-1]true [258] L845-1-->L845-2: Formula: (and (<= 0 |v_ULTIMATE.start_main_~#t1~0#1.offset_3|) (= (select |v_#valid_8| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) 1) (= (store |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3| (store (select |v_#memory_int_4| |v_ULTIMATE.start_main_~#t1~0#1.base_3|) |v_ULTIMATE.start_main_~#t1~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre4#1_3|)) |v_#memory_int_3|) (<= (+ |v_ULTIMATE.start_main_~#t1~0#1.offset_3| 4) (select |v_#length_7| |v_ULTIMATE.start_main_~#t1~0#1.base_3|))) InVars {#valid=|v_#valid_8|, #memory_int=|v_#memory_int_4|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} OutVars{#valid=|v_#valid_8|, #memory_int=|v_#memory_int_3|, #length=|v_#length_7|, ULTIMATE.start_main_~#t1~0#1.base=|v_ULTIMATE.start_main_~#t1~0#1.base_3|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_3|, ULTIMATE.start_main_~#t1~0#1.offset=|v_ULTIMATE.start_main_~#t1~0#1.offset_3|} AuxVars[] AssignedVars[#memory_int] 160#[L845-2]true [485] L845-2-->$Ultimate##0: Formula: (and (= |v_thr1Thread1of1ForFork1_#in~_#1.offset_4| 0) (= v_thr1Thread1of1ForFork1_thidvar1_2 0) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_4| 0) (= |v_ULTIMATE.start_main_#t~pre4#1_7| v_thr1Thread1of1ForFork1_thidvar0_2)) InVars {ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_4|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset_8|, ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_7|, thr1Thread1of1ForFork1_thidvar1=v_thr1Thread1of1ForFork1_thidvar1_2, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_4|, thr1Thread1of1ForFork1_thidvar0=v_thr1Thread1of1ForFork1_thidvar0_2, thr1Thread1of1ForFork1_#res#1.base=|v_thr1Thread1of1ForFork1_#res#1.base_4|, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base=|v_thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base_8|, thr1Thread1of1ForFork1_~b21~0#1=|v_thr1Thread1of1ForFork1_~b21~0#1_12|, thr1Thread1of1ForFork1_#res#1.offset=|v_thr1Thread1of1ForFork1_#res#1.offset_4|, thr1Thread1of1ForFork1_~x1~0#1=|v_thr1Thread1of1ForFork1_~x1~0#1_8|, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_30|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_4|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_#in~_#1.base, thr1Thread1of1ForFork1_#in~_#1.offset, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.offset, thr1Thread1of1ForFork1_thidvar1, thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_thidvar0, thr1Thread1of1ForFork1_#res#1.base, thr1Thread1of1ForFork1_reach_error_#t~nondet0#1.base, thr1Thread1of1ForFork1_~b21~0#1, thr1Thread1of1ForFork1_#res#1.offset, thr1Thread1of1ForFork1_~x1~0#1, thr1Thread1of1ForFork1_~y1~0#1, thr1Thread1of1ForFork1_~_#1.base] 162#[$Ultimate##0, L845-3]true [432] $Ultimate##0-->$Ultimate##3: Formula: (and (= |v_thr1Thread1of1ForFork1_~_#1.offset_1| |v_thr1Thread1of1ForFork1_#in~_#1.offset_1|) (= |v_thr1Thread1of1ForFork1_#in~_#1.base_1| |v_thr1Thread1of1ForFork1_~_#1.base_1|)) InVars {thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_1|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_1|} OutVars{thr1Thread1of1ForFork1_#in~_#1.base=|v_thr1Thread1of1ForFork1_#in~_#1.base_1|, thr1Thread1of1ForFork1_#in~_#1.offset=|v_thr1Thread1of1ForFork1_#in~_#1.offset_1|, thr1Thread1of1ForFork1_~_#1.offset=|v_thr1Thread1of1ForFork1_~_#1.offset_1|, thr1Thread1of1ForFork1_~_#1.base=|v_thr1Thread1of1ForFork1_~_#1.base_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~_#1.offset, thr1Thread1of1ForFork1_~_#1.base] 164#[$Ultimate##3, L845-3]true [346] L845-3-->L845-4: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~pre4#1=|v_ULTIMATE.start_main_#t~pre4#1_4|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre4#1] 536#[L845-4, $Ultimate##3]true [272] L845-4-->L846: Formula: true InVars {} OutVars{ULTIMATE.start_main_#t~nondet5#1=|v_ULTIMATE.start_main_#t~nondet5#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~nondet5#1] 538#[$Ultimate##3, L846]true [434] $Ultimate##3-->L753-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 540#[L753-1, L846]true [257] L846-->L846-1: Formula: (= |v_ULTIMATE.start_main_#t~pre6#1_2| |v_#pthreadsForks_4|) InVars {#pthreadsForks=|v_#pthreadsForks_4|} OutVars{#pthreadsForks=|v_#pthreadsForks_4|, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_2|} AuxVars[] AssignedVars[ULTIMATE.start_main_#t~pre6#1] 542#[L753-1, L846-1]true [436] L753-1-->L705: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 544#[L705, L846-1]true [250] L846-1-->L846-2: Formula: (= (+ 1 |v_#pthreadsForks_6|) |v_#pthreadsForks_5|) InVars {#pthreadsForks=|v_#pthreadsForks_6|} OutVars{#pthreadsForks=|v_#pthreadsForks_5|} AuxVars[] AssignedVars[#pthreadsForks] 546#[L846-2, L705]true [440] L705-->L707: Formula: (= v_~b1~0_5 1) InVars {} OutVars{~b1~0=v_~b1~0_5} AuxVars[] AssignedVars[~b1~0] 548#[L846-2, L707]true [271] L846-2-->L846-3: Formula: (and (<= (+ 4 |v_ULTIMATE.start_main_~#t2~0#1.offset_3|) (select |v_#length_8| |v_ULTIMATE.start_main_~#t2~0#1.base_3|)) (= (select |v_#valid_9| |v_ULTIMATE.start_main_~#t2~0#1.base_3|) 1) (= (store |v_#memory_int_6| |v_ULTIMATE.start_main_~#t2~0#1.base_3| (store (select |v_#memory_int_6| |v_ULTIMATE.start_main_~#t2~0#1.base_3|) |v_ULTIMATE.start_main_~#t2~0#1.offset_3| |v_ULTIMATE.start_main_#t~pre6#1_3|)) |v_#memory_int_5|) (<= 0 |v_ULTIMATE.start_main_~#t2~0#1.offset_3|)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_3|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_3|, #valid=|v_#valid_9|, #memory_int=|v_#memory_int_6|, #length=|v_#length_8|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_3|} OutVars{ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_3|, ULTIMATE.start_main_~#t2~0#1.offset=|v_ULTIMATE.start_main_~#t2~0#1.offset_3|, #valid=|v_#valid_9|, #memory_int=|v_#memory_int_5|, #length=|v_#length_8|, ULTIMATE.start_main_~#t2~0#1.base=|v_ULTIMATE.start_main_~#t2~0#1.base_3|} AuxVars[] AssignedVars[#memory_int] 550#[L846-3, L707]true [443] L707-->L710: Formula: (= v_~x~0_4 1) InVars {} OutVars{~x~0=v_~x~0_4} AuxVars[] AssignedVars[~x~0] 552#[L846-3, L710]true [482] L846-3-->$Ultimate##0: Formula: (and (= v_thr2Thread1of1ForFork0_thidvar2_2 0) (= |v_thr2Thread1of1ForFork0_#in~_#1.offset_4| 0) (= |v_ULTIMATE.start_main_#t~pre6#1_7| v_thr2Thread1of1ForFork0_thidvar0_2) (= v_thr2Thread1of1ForFork0_thidvar1_2 0) (= |v_thr2Thread1of1ForFork0_#in~_#1.base_4| 0)) InVars {ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_7|} OutVars{thr2Thread1of1ForFork0_~b12~0#1=|v_thr2Thread1of1ForFork0_~b12~0#1_12|, ULTIMATE.start_main_#t~pre6#1=|v_ULTIMATE.start_main_#t~pre6#1_7|, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset=|v_thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset_8|, thr2Thread1of1ForFork0_#res#1.offset=|v_thr2Thread1of1ForFork0_#res#1.offset_4|, thr2Thread1of1ForFork0_~_#1.base=|v_thr2Thread1of1ForFork0_~_#1.base_4|, thr2Thread1of1ForFork0_~x2~0#1=|v_thr2Thread1of1ForFork0_~x2~0#1_8|, thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_4|, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_30|, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base=|v_thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base_8|, thr2Thread1of1ForFork0_thidvar0=v_thr2Thread1of1ForFork0_thidvar0_2, thr2Thread1of1ForFork0_thidvar1=v_thr2Thread1of1ForFork0_thidvar1_2, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_4|, thr2Thread1of1ForFork0_thidvar2=v_thr2Thread1of1ForFork0_thidvar2_2, thr2Thread1of1ForFork0_~_#1.offset=|v_thr2Thread1of1ForFork0_~_#1.offset_4|, thr2Thread1of1ForFork0_#res#1.base=|v_thr2Thread1of1ForFork0_#res#1.base_4|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~b12~0#1, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.offset, thr2Thread1of1ForFork0_#res#1.offset, thr2Thread1of1ForFork0_~_#1.base, thr2Thread1of1ForFork0_~x2~0#1, thr2Thread1of1ForFork0_#in~_#1.offset, thr2Thread1of1ForFork0_~y2~0#1, thr2Thread1of1ForFork0_reach_error_#t~nondet0#1.base, thr2Thread1of1ForFork0_thidvar0, thr2Thread1of1ForFork0_thidvar1, thr2Thread1of1ForFork0_#in~_#1.base, thr2Thread1of1ForFork0_thidvar2, thr2Thread1of1ForFork0_~_#1.offset, thr2Thread1of1ForFork0_#res#1.base] 554#[L846-4, L710, $Ultimate##0]true [447] L710-->L713: Formula: (= v_~y~0_15 |v_thr1Thread1of1ForFork1_~y1~0#1_1|) InVars {~y~0=v_~y~0_15} OutVars{~y~0=v_~y~0_15, thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_1|} AuxVars[] AssignedVars[thr1Thread1of1ForFork1_~y1~0#1] 556#[L846-4, $Ultimate##0, L713]true [384] $Ultimate##0-->$Ultimate##3: Formula: (and (= |v_thr2Thread1of1ForFork0_~_#1.base_1| |v_thr2Thread1of1ForFork0_#in~_#1.base_1|) (= |v_thr2Thread1of1ForFork0_~_#1.offset_1| |v_thr2Thread1of1ForFork0_#in~_#1.offset_1|)) InVars {thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_1|, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_1|} OutVars{thr2Thread1of1ForFork0_~_#1.offset=|v_thr2Thread1of1ForFork0_~_#1.offset_1|, thr2Thread1of1ForFork0_~_#1.base=|v_thr2Thread1of1ForFork0_~_#1.base_1|, thr2Thread1of1ForFork0_#in~_#1.offset=|v_thr2Thread1of1ForFork0_#in~_#1.offset_1|, thr2Thread1of1ForFork0_#in~_#1.base=|v_thr2Thread1of1ForFork0_#in~_#1.base_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~_#1.base, thr2Thread1of1ForFork0_~_#1.offset] 558#[L846-4, $Ultimate##3, L713]true [452] L713-->L728: Formula: (= |v_thr1Thread1of1ForFork1_~y1~0#1_5| 0) InVars {thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_5|} OutVars{thr1Thread1of1ForFork1_~y1~0#1=|v_thr1Thread1of1ForFork1_~y1~0#1_5|} AuxVars[] AssignedVars[] 560#[L728, L846-4, $Ultimate##3]true [456] L728-->L730: Formula: (= v_~y~0_10 1) InVars {} OutVars{~y~0=v_~y~0_10} AuxVars[] AssignedVars[~y~0] 562#[L846-4, $Ultimate##3, L730]true [386] $Ultimate##3-->L823-1: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 564#[L823-1, L846-4, L730]true [388] L823-1-->L775: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] 566#[L846-4, L775, L730]true [392] L775-->L777: Formula: (= v_~b2~0_1 1) InVars {} OutVars{~b2~0=v_~b2~0_1} AuxVars[] AssignedVars[~b2~0] 568#[L846-4, L730, L777]true [395] L777-->L780: Formula: (= 2 v_~x~0_1) InVars {} OutVars{~x~0=v_~x~0_1} AuxVars[] AssignedVars[~x~0] 570#[L846-4, L780, L730]true [399] L780-->L783: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_1| v_~y~0_2) InVars {~y~0=v_~y~0_2} OutVars{~y~0=v_~y~0_2, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_1|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 572#[L846-4, L783, L730]true [403] L783-->L785: Formula: (not (= |v_thr2Thread1of1ForFork0_~y2~0#1_3| 0)) InVars {thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_3|} OutVars{thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_3|} AuxVars[] AssignedVars[] 574#[L846-4, L785, L730]true [407] L785-->L787: Formula: (= v_~b2~0_2 0) InVars {} OutVars{~b2~0=v_~b2~0_2} AuxVars[] AssignedVars[~b2~0] 576#[L787, L846-4, L730]true [409] L787-->L794: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_7| v_~y~0_3) InVars {~y~0=v_~y~0_3} OutVars{~y~0=v_~y~0_3, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_7|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 578#[L794, L846-4, L730]true [2024-02-09 23:29:09,583 INFO L750 eck$LassoCheckResult]: Loop: 578#[L794, L846-4, L730]true [411] L794-->L792: Formula: (not (= |v_thr2Thread1of1ForFork0_~y2~0#1_9| 0)) InVars {thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_9|} OutVars{thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_9|} AuxVars[] AssignedVars[] 581#[L792, L846-4, L730]true [416] L792-->L794: Formula: (= |v_thr2Thread1of1ForFork0_~y2~0#1_13| v_~y~0_4) InVars {~y~0=v_~y~0_4} OutVars{~y~0=v_~y~0_4, thr2Thread1of1ForFork0_~y2~0#1=|v_thr2Thread1of1ForFork0_~y2~0#1_13|} AuxVars[] AssignedVars[thr2Thread1of1ForFork0_~y2~0#1] 578#[L794, L846-4, L730]true [2024-02-09 23:29:09,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1051425602, now seen corresponding path program 1 times [2024-02-09 23:29:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055207341] [2024-02-09 23:29:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,604 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:09,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash 14118, now seen corresponding path program 2 times [2024-02-09 23:29:09,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:09,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203382084] [2024-02-09 23:29:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:09,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,627 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:09,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2024-02-09 23:29:09,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1102675805, now seen corresponding path program 1 times [2024-02-09 23:29:09,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-09 23:29:09,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654953987] [2024-02-09 23:29:09,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-09 23:29:09,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-09 23:29:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:09,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:09,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-02-09 23:29:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:10,488 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-02-09 23:29:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-02-09 23:29:10,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.02 11:29:10 BoogieIcfgContainer [2024-02-09 23:29:10,553 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-02-09 23:29:10,554 INFO L158 Benchmark]: Toolchain (without parser) took 4405.48ms. Allocated memory was 179.3MB in the beginning and 349.2MB in the end (delta: 169.9MB). Free memory was 104.1MB in the beginning and 183.5MB in the end (delta: -79.4MB). Peak memory consumption was 91.5MB. Max. memory is 8.0GB. [2024-02-09 23:29:10,554 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 8.0GB. [2024-02-09 23:29:10,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 414.14ms. Allocated memory is still 179.3MB. Free memory was 103.9MB in the beginning and 132.4MB in the end (delta: -28.5MB). Peak memory consumption was 16.4MB. Max. memory is 8.0GB. [2024-02-09 23:29:10,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.04ms. Allocated memory is still 179.3MB. Free memory was 132.4MB in the beginning and 130.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-02-09 23:29:10,555 INFO L158 Benchmark]: Boogie Preprocessor took 35.69ms. Allocated memory is still 179.3MB. Free memory was 130.4MB in the beginning and 128.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2024-02-09 23:29:10,555 INFO L158 Benchmark]: RCFGBuilder took 354.77ms. Allocated memory is still 179.3MB. Free memory was 128.3MB in the beginning and 112.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2024-02-09 23:29:10,555 INFO L158 Benchmark]: BuchiAutomizer took 3558.46ms. Allocated memory was 179.3MB in the beginning and 349.2MB in the end (delta: 169.9MB). Free memory was 112.6MB in the beginning and 183.5MB in the end (delta: -71.0MB). Peak memory consumption was 99.3MB. Max. memory is 8.0GB. [2024-02-09 23:29:10,557 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 179.3MB. Free memory is still 116.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 414.14ms. Allocated memory is still 179.3MB. Free memory was 103.9MB in the beginning and 132.4MB in the end (delta: -28.5MB). Peak memory consumption was 16.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 39.04ms. Allocated memory is still 179.3MB. Free memory was 132.4MB in the beginning and 130.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.69ms. Allocated memory is still 179.3MB. Free memory was 130.4MB in the beginning and 128.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 354.77ms. Allocated memory is still 179.3MB. Free memory was 128.3MB in the beginning and 112.6MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * BuchiAutomizer took 3558.46ms. Allocated memory was 179.3MB in the beginning and 349.2MB in the end (delta: 169.9MB). Free memory was 112.6MB in the beginning and 183.5MB in the end (delta: -71.0MB). Peak memory consumption was 99.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (6 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.6 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 973 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.3s and 7 iterations. TraceHistogramMax:0. Analysis of lassos took 1.7s. Construction of modules took 0.5s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1618 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1618 mSDsluCounter, 6778 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3796 mSDsCounter, 70 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 964 IncrementalHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 70 mSolverCounterUnsat, 2982 mSDtfsCounter, 964 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN4 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 791]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L700] 0 int x, y; VAL [x=0, y=0] [L701] 0 int b1, b2; VAL [b1=0, b2=0, x=0, y=0] [L702] 0 int X; VAL [X=0, b1=0, b2=0, x=0, y=0] [L844] 0 pthread_t t1, t2; VAL [X=0, b1=0, b2=0, t1={28245:0}, t2={28244:0}, x=0, y=0] [L845] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [X=0, b1=0, b2=0, pthread_create(&t1, 0, thr1, 0)=31299, t1={28245:0}, t2={28244:0}, x=0, y=0] [L704] COND TRUE 1 1 VAL [X=0, _={0:0}, _={0:0}, b1=0, b2=0, x=0, y=0] [L706] 1 b1 = 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=0, y=0] [L709] 1 x = 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y=0] [L846] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [X=0, b1=1, b2=0, pthread_create(&t2, 0, thr2, 0)=31300, t1={28245:0}, t2={28244:0}, x=1, y=0] [L712] 1 int y1 = y; VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y1=0, y=0] [L714] COND FALSE 1 !(y1 != 0) VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y1=0, y=0] [L729] 1 y = 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y1=0, y=1] [L774] COND TRUE 2 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y=1] [L776] 2 b2 = 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=1, x=1, y=1] [L779] 2 x = 2 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=1, x=2, y=1] [L782] 2 int y2 = y; VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=1, x=2, y2=1, y=1] [L784] COND TRUE 2 y2 != 0 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=1, x=2, y2=1, y=1] [L786] 2 b2 = 0 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=2, y2=1, y=1] [L789] 2 y2 = y VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=2, y2=1, y=1] Loop: [L791] COND TRUE y2 != 0 [L793] y2 = y End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 791]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L700] 0 int x, y; VAL [x=0, y=0] [L701] 0 int b1, b2; VAL [b1=0, b2=0, x=0, y=0] [L702] 0 int X; VAL [X=0, b1=0, b2=0, x=0, y=0] [L844] 0 pthread_t t1, t2; VAL [X=0, b1=0, b2=0, t1={28245:0}, t2={28244:0}, x=0, y=0] [L845] FCALL, FORK 0 pthread_create(&t1, 0, thr1, 0) VAL [X=0, b1=0, b2=0, pthread_create(&t1, 0, thr1, 0)=31299, t1={28245:0}, t2={28244:0}, x=0, y=0] [L704] COND TRUE 1 1 VAL [X=0, _={0:0}, _={0:0}, b1=0, b2=0, x=0, y=0] [L706] 1 b1 = 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=0, y=0] [L709] 1 x = 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y=0] [L846] FCALL, FORK 0 pthread_create(&t2, 0, thr2, 0) VAL [X=0, b1=1, b2=0, pthread_create(&t2, 0, thr2, 0)=31300, t1={28245:0}, t2={28244:0}, x=1, y=0] [L712] 1 int y1 = y; VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y1=0, y=0] [L714] COND FALSE 1 !(y1 != 0) VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y1=0, y=0] [L729] 1 y = 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y1=0, y=1] [L774] COND TRUE 2 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=1, y=1] [L776] 2 b2 = 1 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=1, x=1, y=1] [L779] 2 x = 2 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=1, x=2, y=1] [L782] 2 int y2 = y; VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=1, x=2, y2=1, y=1] [L784] COND TRUE 2 y2 != 0 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=1, x=2, y2=1, y=1] [L786] 2 b2 = 0 VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=2, y2=1, y=1] [L789] 2 y2 = y VAL [X=0, _={0:0}, _={0:0}, b1=1, b2=0, x=2, y2=1, y=1] Loop: [L791] COND TRUE y2 != 0 [L793] y2 = y End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-02-09 23:29:10,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...