/usr/bin/java -Xmx7000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --traceabstraction.prune.known.deadend.states.from.previous.iterations false -s ../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf --traceabstraction.cegar.restart.behaviour ONE_CEGAR_PER_ERROR_LOCATION --traceabstraction.number.of.independence.relations.to.use.for.por 2 --traceabstraction.abstraction.used.for.commutativity.in.por VARIABLES_GLOBAL '--traceabstraction.abstraction.used.for.commutativity.in.por.#2' NONE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_safe-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.dynamic-abstractions-e2ee32c-m [2023-09-07 14:38:51,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-09-07 14:38:51,451 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep.epf [2023-09-07 14:38:51,457 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-09-07 14:38:51,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-09-07 14:38:51,458 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-09-07 14:38:51,484 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-07 14:38:51,484 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-07 14:38:51,484 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-07 14:38:51,485 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-07 14:38:51,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-07 14:38:51,485 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-07 14:38:51,486 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-09-07 14:38:51,486 INFO L153 SettingsManager]: * Use SBE=true [2023-09-07 14:38:51,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-07 14:38:51,486 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-07 14:38:51,487 INFO L153 SettingsManager]: * sizeof long=4 [2023-09-07 14:38:51,487 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-07 14:38:51,487 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-09-07 14:38:51,487 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-09-07 14:38:51,487 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-07 14:38:51,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-07 14:38:51,491 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-07 14:38:51,492 INFO L153 SettingsManager]: * sizeof long double=12 [2023-09-07 14:38:51,494 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-09-07 14:38:51,495 INFO L153 SettingsManager]: * Use constant arrays=true [2023-09-07 14:38:51,495 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-07 14:38:51,495 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-07 14:38:51,495 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-09-07 14:38:51,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-07 14:38:51,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-07 14:38:51,496 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-07 14:38:51,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-07 14:38:51,496 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-07 14:38:51,497 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-07 14:38:51,497 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-07 14:38:51,497 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-09-07 14:38:51,497 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-09-07 14:38:51,497 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-07 14:38:51,497 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2023-09-07 14:38:51,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Prune known deadend states from previous iterations -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: CEGAR restart behaviour -> ONE_CEGAR_PER_ERROR_LOCATION Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Number of independence relations to use for POR -> 2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstraction used for commutativity in POR -> VARIABLES_GLOBAL Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstraction used for commutativity in POR #2 -> NONE [2023-09-07 14:38:51,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-07 14:38:51,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-07 14:38:51,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-07 14:38:51,675 INFO L270 PluginConnector]: Initializing CDTParser... [2023-09-07 14:38:51,675 INFO L274 PluginConnector]: CDTParser initialized [2023-09-07 14:38:51,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-6.i [2023-09-07 14:38:52,609 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-09-07 14:38:52,811 INFO L384 CDTParser]: Found 1 translation units. [2023-09-07 14:38:52,811 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i [2023-09-07 14:38:52,827 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36addeeb7/4c99c54604c94d5f983633f8ee2ddf35/FLAG6b91a2589 [2023-09-07 14:38:52,837 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36addeeb7/4c99c54604c94d5f983633f8ee2ddf35 [2023-09-07 14:38:52,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-07 14:38:52,841 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-09-07 14:38:52,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-07 14:38:52,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-07 14:38:52,846 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-07 14:38:52,846 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:38:52" (1/1) ... [2023-09-07 14:38:52,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b850a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:52, skipping insertion in model container [2023-09-07 14:38:52,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 02:38:52" (1/1) ... [2023-09-07 14:38:52,880 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-09-07 14:38:53,062 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30241,30254] [2023-09-07 14:38:53,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-07 14:38:53,089 INFO L202 MainTranslator]: Completed pre-run [2023-09-07 14:38:53,114 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [229] [2023-09-07 14:38:53,115 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [230] [2023-09-07 14:38:53,133 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30241,30254] [2023-09-07 14:38:53,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-07 14:38:53,161 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-07 14:38:53,161 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-07 14:38:53,166 INFO L206 MainTranslator]: Completed translation [2023-09-07 14:38:53,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53 WrapperNode [2023-09-07 14:38:53,167 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-07 14:38:53,167 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-07 14:38:53,168 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-07 14:38:53,168 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-07 14:38:53,172 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,197 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,216 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2023-09-07 14:38:53,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-07 14:38:53,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-07 14:38:53,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-07 14:38:53,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-09-07 14:38:53,222 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,227 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,241 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,243 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,244 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-07 14:38:53,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-07 14:38:53,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-09-07 14:38:53,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-09-07 14:38:53,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (1/1) ... [2023-09-07 14:38:53,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-07 14:38:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:38:53,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-07 14:38:53,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-07 14:38:53,301 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-09-07 14:38:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-09-07 14:38:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-09-07 14:38:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-09-07 14:38:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-07 14:38:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-07 14:38:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-07 14:38:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-07 14:38:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-07 14:38:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-07 14:38:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-07 14:38:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-07 14:38:53,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-07 14:38:53,305 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-07 14:38:53,392 INFO L236 CfgBuilder]: Building ICFG [2023-09-07 14:38:53,393 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-07 14:38:53,499 INFO L277 CfgBuilder]: Performing block encoding [2023-09-07 14:38:53,504 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-07 14:38:53,504 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-07 14:38:53,505 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:38:53 BoogieIcfgContainer [2023-09-07 14:38:53,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-07 14:38:53,507 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-07 14:38:53,507 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-09-07 14:38:53,509 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-09-07 14:38:53,509 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 02:38:52" (1/3) ... [2023-09-07 14:38:53,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10edbe31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:38:53, skipping insertion in model container [2023-09-07 14:38:53,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 02:38:53" (2/3) ... [2023-09-07 14:38:53,510 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10edbe31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 02:38:53, skipping insertion in model container [2023-09-07 14:38:53,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 02:38:53" (3/3) ... [2023-09-07 14:38:53,511 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2023-09-07 14:38:53,517 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-07 14:38:53,523 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-07 14:38:53,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-07 14:38:53,524 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-07 14:38:53,562 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-07 14:38:53,591 INFO L103 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-09-07 14:38:53,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-09-07 14:38:53,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:38:53,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-09-07 14:38:53,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-09-07 14:38:53,636 INFO L103 denceProviderFactory]: Independence Relation #2: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-09-07 14:38:53,650 INFO L166 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 2 independence relations. [2023-09-07 14:38:53,652 WARN L169 artialOrderCegarLoop]: Attention: Unsuitable combinations of independence relations may be unsound! [2023-09-07 14:38:53,652 WARN L170 artialOrderCegarLoop]: Only combine independence relations if you are sure the combination is sound. [2023-09-07 14:38:53,659 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION ======== [2023-09-07 14:38:53,668 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@460ca3dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-09-07 14:38:53,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-07 14:38:54,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 14:38:54,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 14:38:54,212 INFO L85 PathProgramCache]: Analyzing trace with hash 95801150, now seen corresponding path program 1 times [2023-09-07 14:38:54,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 14:38:54,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017111350] [2023-09-07 14:38:54,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:38:54,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 14:38:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:38:54,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:54,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 14:38:54,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017111350] [2023-09-07 14:38:54,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017111350] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-07 14:38:54,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-07 14:38:54,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-07 14:38:54,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827118610] [2023-09-07 14:38:54,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-07 14:38:54,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-07 14:38:54,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 14:38:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-07 14:38:54,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-07 14:38:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:38:54,527 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 14:38:54,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 14:38:54,527 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:38:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:38:54,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-07 14:38:54,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 14:38:54,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 14:38:54,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1875915451, now seen corresponding path program 1 times [2023-09-07 14:38:54,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 14:38:54,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181140436] [2023-09-07 14:38:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:38:54,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 14:38:54,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:38:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 14:38:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181140436] [2023-09-07 14:38:54,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181140436] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-07 14:38:54,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769995483] [2023-09-07 14:38:54,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:38:54,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:38:54,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:38:54,903 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-07 14:38:54,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-07 14:38:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:38:54,999 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-07 14:38:55,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-09-07 14:38:55,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:55,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-09-07 14:38:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:55,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769995483] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-07 14:38:55,093 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-07 14:38:55,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-09-07 14:38:55,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519550743] [2023-09-07 14:38:55,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-07 14:38:55,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-07 14:38:55,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 14:38:55,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-07 14:38:55,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-07 14:38:55,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:38:55,098 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 14:38:55,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 14:38:55,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:38:55,099 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:38:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:38:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:38:55,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-07 14:38:55,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-09-07 14:38:55,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 14:38:55,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 14:38:55,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1869128357, now seen corresponding path program 2 times [2023-09-07 14:38:55,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 14:38:55,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832567051] [2023-09-07 14:38:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:38:55,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 14:38:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:38:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 14:38:55,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832567051] [2023-09-07 14:38:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832567051] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-07 14:38:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053104552] [2023-09-07 14:38:55,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-07 14:38:55,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:38:55,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:38:55,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-07 14:38:55,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-07 14:38:55,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-07 14:38:55,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-07 14:38:55,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-07 14:38:55,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-09-07 14:38:55,718 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:55,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-09-07 14:38:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:55,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053104552] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-07 14:38:55,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-07 14:38:55,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-09-07 14:38:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513523639] [2023-09-07 14:38:55,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-07 14:38:55,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-07 14:38:55,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 14:38:55,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-07 14:38:55,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-09-07 14:38:55,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:38:55,817 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 14:38:55,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 14:38:55,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:38:55,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:38:55,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:38:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:38:55,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:38:55,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:38:55,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-07 14:38:56,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:38:56,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 14:38:56,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 14:38:56,180 INFO L85 PathProgramCache]: Analyzing trace with hash 526543515, now seen corresponding path program 3 times [2023-09-07 14:38:56,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 14:38:56,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994886853] [2023-09-07 14:38:56,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:38:56,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 14:38:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:38:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:56,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 14:38:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994886853] [2023-09-07 14:38:56,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994886853] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-07 14:38:56,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488207005] [2023-09-07 14:38:56,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-07 14:38:56,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:38:56,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:38:56,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-07 14:38:56,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-07 14:38:56,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-09-07 14:38:56,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-07 14:38:56,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-07 14:38:56,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-09-07 14:38:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:56,635 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-09-07 14:38:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 154 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:56,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488207005] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-07 14:38:56,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-07 14:38:56,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 31 [2023-09-07 14:38:56,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76096214] [2023-09-07 14:38:56,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-07 14:38:56,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-07 14:38:56,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 14:38:56,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-07 14:38:56,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2023-09-07 14:38:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:38:56,872 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 14:38:56,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.870967741935484) internal successors, (151), 31 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 14:38:56,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:38:56,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:38:56,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:38:56,872 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:38:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:38:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:38:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:38:57,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-09-07 14:38:57,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-07 14:38:57,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:38:57,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 14:38:57,474 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 14:38:57,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1164740830, now seen corresponding path program 4 times [2023-09-07 14:38:57,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 14:38:57,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842443389] [2023-09-07 14:38:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:38:57,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 14:38:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:38:59,487 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:38:59,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 14:38:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842443389] [2023-09-07 14:38:59,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842443389] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-07 14:38:59,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768097870] [2023-09-07 14:38:59,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-07 14:38:59,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:38:59,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:38:59,489 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-07 14:38:59,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-07 14:38:59,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-07 14:38:59,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-07 14:38:59,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 51 conjunts are in the unsatisfiable core [2023-09-07 14:38:59,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-09-07 14:39:02,846 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 486 proven. 165 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:39:02,846 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-09-07 14:39:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 0 proven. 651 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:39:06,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768097870] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-07 14:39:06,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-07 14:39:06,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 145 [2023-09-07 14:39:06,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920725918] [2023-09-07 14:39:06,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-07 14:39:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 145 states [2023-09-07 14:39:06,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 14:39:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 145 interpolants. [2023-09-07 14:39:06,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1256, Invalid=19624, Unknown=0, NotChecked=0, Total=20880 [2023-09-07 14:39:06,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:39:06,489 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 14:39:06,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 145 states, 145 states have (on average 2.882758620689655) internal successors, (418), 145 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 14:39:06,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:39:06,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:39:06,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:39:06,489 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2023-09-07 14:39:06,490 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:41:02,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:41:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:41:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:41:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-09-07 14:41:02,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 626 states. [2023-09-07 14:41:02,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-07 14:41:02,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:41:02,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 14:41:02,243 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 14:41:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash 2039891197, now seen corresponding path program 1 times [2023-09-07 14:41:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 14:41:02,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087959792] [2023-09-07 14:41:02,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:41:02,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 14:41:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:41:04,265 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:41:04,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 14:41:04,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087959792] [2023-09-07 14:41:04,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087959792] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-07 14:41:04,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948703119] [2023-09-07 14:41:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:41:04,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:41:04,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:41:04,269 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-07 14:41:04,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-07 14:41:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:41:04,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 56 conjunts are in the unsatisfiable core [2023-09-07 14:41:04,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-09-07 14:41:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 486 proven. 167 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:41:07,509 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-09-07 14:41:11,672 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:41:11,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948703119] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-07 14:41:11,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-07 14:41:11,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 154 [2023-09-07 14:41:11,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161995913] [2023-09-07 14:41:11,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-07 14:41:11,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 154 states [2023-09-07 14:41:11,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 14:41:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants. [2023-09-07 14:41:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1265, Invalid=22297, Unknown=0, NotChecked=0, Total=23562 [2023-09-07 14:41:11,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:41:11,680 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 14:41:11,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 154 states, 154 states have (on average 2.9155844155844157) internal successors, (449), 154 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 14:41:11,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:41:11,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:41:11,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:41:11,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2023-09-07 14:41:11,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 626 states. [2023-09-07 14:41:11,681 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:43:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:43:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:43:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:43:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-09-07 14:43:32,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 626 states. [2023-09-07 14:43:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 666 states. [2023-09-07 14:43:32,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-07 14:43:32,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:43:32,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 14:43:32,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 14:43:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1667235011, now seen corresponding path program 2 times [2023-09-07 14:43:32,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 14:43:32,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007409666] [2023-09-07 14:43:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:43:32,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 14:43:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:43:35,098 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 0 proven. 711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:43:35,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 14:43:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007409666] [2023-09-07 14:43:35,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007409666] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-07 14:43:35,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077618504] [2023-09-07 14:43:35,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-07 14:43:35,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:43:35,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:43:35,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-07 14:43:35,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-07 14:43:35,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-07 14:43:35,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-07 14:43:35,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 57 conjunts are in the unsatisfiable core [2023-09-07 14:43:35,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-09-07 14:43:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 486 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:43:38,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-09-07 14:43:43,465 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 0 proven. 711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-07 14:43:43,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077618504] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-07 14:43:43,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-07 14:43:43,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 164 [2023-09-07 14:43:43,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644567838] [2023-09-07 14:43:43,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-07 14:43:43,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 164 states [2023-09-07 14:43:43,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 14:43:43,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants. [2023-09-07 14:43:43,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1342, Invalid=25390, Unknown=0, NotChecked=0, Total=26732 [2023-09-07 14:43:43,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:43:43,472 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 14:43:43,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 164 states, 164 states have (on average 3.0853658536585367) internal successors, (506), 164 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 14:43:43,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:43:43,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:43:43,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:43:43,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2023-09-07 14:43:43,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 626 states. [2023-09-07 14:43:43,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 666 states. [2023-09-07 14:43:43,473 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:46:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:46:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:46:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:46:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-09-07 14:46:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 626 states. [2023-09-07 14:46:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 667 states. [2023-09-07 14:46:24,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 726 states. [2023-09-07 14:46:24,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-09-07 14:46:24,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:46:24,952 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-09-07 14:46:24,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-07 14:46:24,953 INFO L85 PathProgramCache]: Analyzing trace with hash 999989181, now seen corresponding path program 3 times [2023-09-07 14:46:24,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-07 14:46:24,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370049520] [2023-09-07 14:46:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-07 14:46:24,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-07 14:46:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-07 14:46:25,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 367 proven. 49 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2023-09-07 14:46:25,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-07 14:46:25,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370049520] [2023-09-07 14:46:25,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370049520] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-07 14:46:25,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734994263] [2023-09-07 14:46:25,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-07 14:46:25,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-07 14:46:25,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-07 14:46:25,756 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-07 14:46:25,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-07 14:46:25,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2023-09-07 14:46:25,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-07 14:46:25,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-07 14:46:25,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-09-07 14:46:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 409 proven. 0 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2023-09-07 14:46:25,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-07 14:46:25,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734994263] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-07 14:46:25,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-07 14:46:25,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [29] total 31 [2023-09-07 14:46:25,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802081101] [2023-09-07 14:46:25,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-07 14:46:25,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-07 14:46:25,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-07 14:46:25,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-07 14:46:25,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=700, Unknown=0, NotChecked=0, Total=930 [2023-09-07 14:46:25,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-07 14:46:25,933 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-09-07 14:46:25,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.84) internal successors, (121), 25 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-07 14:46:25,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-09-07 14:46:25,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-09-07 14:46:25,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-09-07 14:46:25,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2023-09-07 14:46:25,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 626 states. [2023-09-07 14:46:25,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 667 states. [2023-09-07 14:46:25,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 726 states. [2023-09-07 14:46:25,933 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.