./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6568ba33 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/GemCutterReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i -s /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3aaecf4b84c8f01be47d1e624871b73f33541df72e3693614a0a3bb5cc7a97b5 --- Real Ultimate output --- This is Ultimate 0.2.3-?-6568ba3-m [2023-11-23 21:54:25,325 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:54:25,392 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/config/svcomp-Reach-32bit-GemCutter_Default.epf [2023-11-23 21:54:25,409 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:54:25,409 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:54:25,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:54:25,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:54:25,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:54:25,460 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:54:25,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:54:25,461 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:54:25,461 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:54:25,461 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:54:25,462 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:54:25,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:54:25,464 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:54:25,464 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:54:25,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:54:25,465 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:54:25,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:54:25,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:54:25,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:54:25,469 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:54:25,469 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:54:25,469 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:54:25,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:54:25,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:54:25,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:54:25,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:54:25,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:54:25,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:54:25,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:54:25,472 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:54:25,472 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:54:25,473 INFO L153 SettingsManager]: * DFS Order used in POR=LOOP_LOCKSTEP [2023-11-23 21:54:25,473 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:54:25,473 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:54:25,474 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-23 21:54:25,474 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:54:25,474 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-23 21:54:25,475 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-23 21:54:25,475 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/UGemCutter-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aaecf4b84c8f01be47d1e624871b73f33541df72e3693614a0a3bb5cc7a97b5 [2023-11-23 21:54:25,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:54:25,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:54:25,729 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:54:25,730 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:54:25,730 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:54:25,731 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2023-11-23 21:54:26,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:54:26,960 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:54:26,961 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2023-11-23 21:54:26,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a0997aa70/f19430fbca0046cf979922dc1941d81f/FLAGeccd3ea8f [2023-11-23 21:54:26,990 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/data/a0997aa70/f19430fbca0046cf979922dc1941d81f [2023-11-23 21:54:26,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:54:26,993 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:54:26,995 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:54:26,995 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:54:26,999 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:54:26,999 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:54:26" (1/1) ... [2023-11-23 21:54:27,000 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40c4603b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27, skipping insertion in model container [2023-11-23 21:54:27,000 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:54:26" (1/1) ... [2023-11-23 21:54:27,042 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:54:27,265 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-ext/11_fmaxsymopt.i[30570,30583] [2023-11-23 21:54:27,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:54:27,285 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:54:27,326 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-ext/11_fmaxsymopt.i[30570,30583] [2023-11-23 21:54:27,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:54:27,361 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:54:27,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27 WrapperNode [2023-11-23 21:54:27,361 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:54:27,362 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:54:27,362 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:54:27,362 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:54:27,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,376 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,394 INFO L138 Inliner]: procedures = 171, calls = 26, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 96 [2023-11-23 21:54:27,395 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:54:27,395 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:54:27,396 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:54:27,396 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:54:27,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,406 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,410 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,412 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:54:27,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:54:27,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:54:27,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:54:27,417 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (1/1) ... [2023-11-23 21:54:27,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:54:27,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:27,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:54:27,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:54:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:54:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-23 21:54:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-23 21:54:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:54:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:54:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:54:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:54:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:54:27,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:54:27,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:54:27,505 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:54:27,609 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:54:27,611 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:54:27,768 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:54:27,915 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:54:27,915 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:54:27,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:54:27 BoogieIcfgContainer [2023-11-23 21:54:27,916 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:54:27,917 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:54:27,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:54:27,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:54:27,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:54:26" (1/3) ... [2023-11-23 21:54:27,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610770c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:54:27, skipping insertion in model container [2023-11-23 21:54:27,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:54:27" (2/3) ... [2023-11-23 21:54:27,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610770c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:54:27, skipping insertion in model container [2023-11-23 21:54:27,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:54:27" (3/3) ... [2023-11-23 21:54:27,924 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2023-11-23 21:54:27,931 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:54:27,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:54:27,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:54:27,941 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:54:27,983 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:54:28,020 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:28,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 21:54:28,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:28,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-23 21:54:28,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-23 21:54:28,064 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 21:54:28,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread1of1ForFork0 ======== [2023-11-23 21:54:28,079 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=LoopHeads, 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;@79e5a431, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:28,080 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:54:28,178 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:28,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:28,182 INFO L85 PathProgramCache]: Analyzing trace with hash 603976861, now seen corresponding path program 1 times [2023-11-23 21:54:28,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:28,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282364175] [2023-11-23 21:54:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:28,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:28,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:28,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282364175] [2023-11-23 21:54:28,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282364175] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:28,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:28,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:28,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152729323] [2023-11-23 21:54:28,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:28,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:28,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:28,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:28,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:28,498 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:28,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) [2023-11-23 21:54:28,499 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:28,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:28,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:54:28,540 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:28,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:28,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1501182978, now seen corresponding path program 1 times [2023-11-23 21:54:28,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:28,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758179239] [2023-11-23 21:54:28,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:28,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:28,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:28,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:28,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:28,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758179239] [2023-11-23 21:54:28,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758179239] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:28,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:28,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:28,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607260267] [2023-11-23 21:54:28,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:28,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:28,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:28,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:28,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:28,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:28,669 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:28,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-23 21:54:28,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:28,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:28,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:54:28,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:28,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:28,725 INFO L85 PathProgramCache]: Analyzing trace with hash -504559361, now seen corresponding path program 1 times [2023-11-23 21:54:28,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:28,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098643961] [2023-11-23 21:54:28,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:28,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:28,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098643961] [2023-11-23 21:54:28,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098643961] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:54:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145280456] [2023-11-23 21:54:28,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:28,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:28,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:28,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:54:28,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:54:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:28,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:54:28,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:54:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:28,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:54:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:28,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145280456] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:54:28,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:54:28,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-23 21:54:28,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234790594] [2023-11-23 21:54:28,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:54:28,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:54:28,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:28,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:54:28,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:54:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:28,982 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:28,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-11-23 21:54:28,982 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:28,982 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:28,983 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:29,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:54:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 21:54:29,241 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:29,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1808875772, now seen corresponding path program 2 times [2023-11-23 21:54:29,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583971714] [2023-11-23 21:54:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:29,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:54:29,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:29,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583971714] [2023-11-23 21:54:29,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583971714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:29,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:29,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:29,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159158865] [2023-11-23 21:54:29,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:29,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:29,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:29,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:29,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,304 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:29,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-11-23 21:54:29,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,304 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:29,305 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:29,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,381 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:54:29,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:54:29,390 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-11-23 21:54:29,391 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread1of1ForFork0 was SAFE (1/2) [2023-11-23 21:54:29,394 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:29,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 21:54:29,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:29,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-23 21:54:29,401 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 21:54:29,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-23 21:54:29,402 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=LoopHeads, 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;@79e5a431, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:29,402 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:54:29,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process [2023-11-23 21:54:29,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:29,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:29,460 INFO L85 PathProgramCache]: Analyzing trace with hash 601187672, now seen corresponding path program 1 times [2023-11-23 21:54:29,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:29,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564918079] [2023-11-23 21:54:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:29,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:29,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:29,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:29,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564918079] [2023-11-23 21:54:29,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564918079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:29,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:29,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:29,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26371943] [2023-11-23 21:54:29,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:29,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:29,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:29,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:29,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,516 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:29,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-23 21:54:29,516 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:54:29,544 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:29,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:29,544 INFO L85 PathProgramCache]: Analyzing trace with hash -472160387, now seen corresponding path program 1 times [2023-11-23 21:54:29,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:29,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563020264] [2023-11-23 21:54:29,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:29,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:29,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:29,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563020264] [2023-11-23 21:54:29,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563020264] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:29,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:29,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:29,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115162588] [2023-11-23 21:54:29,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:29,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:29,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:29,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,613 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:29,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-23 21:54:29,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,614 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:54:29,635 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:29,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash -707967252, now seen corresponding path program 1 times [2023-11-23 21:54:29,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:29,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932976370] [2023-11-23 21:54:29,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:29,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:54:29,649 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:54:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:54:29,674 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:54:29,675 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:54:29,675 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-11-23 21:54:29,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:54:29,676 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-23 21:54:29,676 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/2) [2023-11-23 21:54:29,677 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:54:29,677 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 21:54:29,689 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:54:29,690 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:29,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 21:54:29,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:29,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-23 21:54:29,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process [2023-11-23 21:54:29,696 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 21:54:29,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-23 21:54:29,697 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=LoopHeads, 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;@79e5a431, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:29,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:54:29,767 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:29,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash -224952395, now seen corresponding path program 1 times [2023-11-23 21:54:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811598801] [2023-11-23 21:54:29,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:54:29,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:29,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811598801] [2023-11-23 21:54:29,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811598801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:29,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:29,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:29,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037910569] [2023-11-23 21:54:29,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:29,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:29,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,805 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:29,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:54:29,805 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:54:29,830 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:29,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1508360688, now seen corresponding path program 1 times [2023-11-23 21:54:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:29,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018936787] [2023-11-23 21:54:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:29,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:54:29,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:29,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018936787] [2023-11-23 21:54:29,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018936787] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:29,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:29,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:29,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572984306] [2023-11-23 21:54:29,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:29,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:29,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:29,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:29,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:29,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,870 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:29,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-23 21:54:29,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,870 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:54:29,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:29,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1306038443, now seen corresponding path program 1 times [2023-11-23 21:54:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269406599] [2023-11-23 21:54:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:54:29,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:29,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269406599] [2023-11-23 21:54:29,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269406599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:29,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:29,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:29,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658529923] [2023-11-23 21:54:29,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:29,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:29,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:29,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:29,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:29,976 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:29,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-23 21:54:29,976 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,976 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:29,976 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:54:30,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:30,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1599760271, now seen corresponding path program 1 times [2023-11-23 21:54:30,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:30,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244138430] [2023-11-23 21:54:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:30,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:30,081 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:30,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244138430] [2023-11-23 21:54:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244138430] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:54:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079132289] [2023-11-23 21:54:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:30,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:30,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:30,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:54:30,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:54:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:30,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:54:30,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:54:30,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:30,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:54:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:54:30,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079132289] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:54:30,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:54:30,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-23 21:54:30,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852573506] [2023-11-23 21:54:30,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:54:30,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:54:30,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:30,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:54:30,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:54:30,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,235 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:30,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2023-11-23 21:54:30,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,236 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,236 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,236 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:30,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:54:30,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 21:54:30,496 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:30,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:30,497 INFO L85 PathProgramCache]: Analyzing trace with hash 560850829, now seen corresponding path program 1 times [2023-11-23 21:54:30,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:30,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429643978] [2023-11-23 21:54:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:30,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:54:30,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:30,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429643978] [2023-11-23 21:54:30,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429643978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:30,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:30,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:30,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507051129] [2023-11-23 21:54:30,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:30,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:30,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:30,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:30,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,549 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:30,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-23 21:54:30,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,550 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:30,550 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:54:30,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:30,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:30,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1505928289, now seen corresponding path program 1 times [2023-11-23 21:54:30,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:30,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061020294] [2023-11-23 21:54:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:30,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:54:30,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:54:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:54:30,664 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:54:30,665 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:54:30,665 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-11-23 21:54:30,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:54:30,666 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-23 21:54:30,666 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (1/3) [2023-11-23 21:54:30,667 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:54:30,667 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-23 21:54:30,685 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:54:30,686 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:30,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 21:54:30,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:30,687 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-23 21:54:30,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2023-11-23 21:54:30,702 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 21:54:30,702 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of3ForFork0 ======== [2023-11-23 21:54:30,703 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=LoopHeads, 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;@79e5a431, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:30,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:54:30,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:30,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:30,818 INFO L85 PathProgramCache]: Analyzing trace with hash 2040927744, now seen corresponding path program 1 times [2023-11-23 21:54:30,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:30,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971754927] [2023-11-23 21:54:30,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:30,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:30,858 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:30,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:30,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971754927] [2023-11-23 21:54:30,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971754927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:30,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:30,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:30,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163104697] [2023-11-23 21:54:30,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:30,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:30,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:30,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:30,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,861 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:30,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-11-23 21:54:30,862 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:54:30,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:30,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:30,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1852612965, now seen corresponding path program 1 times [2023-11-23 21:54:30,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:30,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61183574] [2023-11-23 21:54:30,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:30,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:30,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:54:30,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:30,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61183574] [2023-11-23 21:54:30,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61183574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:30,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:30,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:30,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574434175] [2023-11-23 21:54:30,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:30,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:30,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:30,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:30,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:30,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,933 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:30,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-23 21:54:30,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,934 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:30,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:54:30,965 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:30,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:30,965 INFO L85 PathProgramCache]: Analyzing trace with hash 4708832, now seen corresponding path program 1 times [2023-11-23 21:54:30,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:30,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116493066] [2023-11-23 21:54:30,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:30,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:54:31,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:31,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116493066] [2023-11-23 21:54:31,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116493066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:31,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:31,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:31,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399732392] [2023-11-23 21:54:31,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:31,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:31,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:31,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:31,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:31,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,017 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:31,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-23 21:54:31,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:54:31,052 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:31,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:31,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1285311419, now seen corresponding path program 1 times [2023-11-23 21:54:31,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:31,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56854394] [2023-11-23 21:54:31,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:31,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:31,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:31,093 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:31,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:31,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56854394] [2023-11-23 21:54:31,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56854394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:31,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:31,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131486742] [2023-11-23 21:54:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:31,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:31,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:31,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,097 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:31,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-23 21:54:31,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:54:31,162 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:31,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:31,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1629345001, now seen corresponding path program 1 times [2023-11-23 21:54:31,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:31,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79692219] [2023-11-23 21:54:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:31,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:54:31,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:31,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79692219] [2023-11-23 21:54:31,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79692219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:31,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:31,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:31,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672491203] [2023-11-23 21:54:31,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:31,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:31,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:31,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,237 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:31,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:54:31,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,237 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 21:54:31,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:31,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:31,304 INFO L85 PathProgramCache]: Analyzing trace with hash -424576509, now seen corresponding path program 1 times [2023-11-23 21:54:31,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:31,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051509959] [2023-11-23 21:54:31,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:31,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:31,344 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:54:31,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:31,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051509959] [2023-11-23 21:54:31,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051509959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:31,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:31,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927604727] [2023-11-23 21:54:31,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:31,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:31,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:31,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,345 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:31,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-11-23 21:54:31,345 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,345 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 21:54:31,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:31,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:31,373 INFO L85 PathProgramCache]: Analyzing trace with hash 643886754, now seen corresponding path program 1 times [2023-11-23 21:54:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:31,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640114670] [2023-11-23 21:54:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:31,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:54:31,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:31,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640114670] [2023-11-23 21:54:31,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640114670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:31,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:31,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:31,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21442129] [2023-11-23 21:54:31,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:31,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:31,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:31,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:31,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,417 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:31,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:54:31,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,417 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 21:54:31,695 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:31,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:31,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1040761403, now seen corresponding path program 1 times [2023-11-23 21:54:31,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:31,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063361160] [2023-11-23 21:54:31,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:31,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:54:31,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:31,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063361160] [2023-11-23 21:54:31,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063361160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:54:31,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125670507] [2023-11-23 21:54:31,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:31,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:31,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:31,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:54:31,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 21:54:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:31,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:54:31,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:54:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:54:31,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:54:31,891 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:54:31,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125670507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:54:31,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:54:31,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-23 21:54:31,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048366217] [2023-11-23 21:54:31,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:54:31,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:54:31,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:54:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:54:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:31,894 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:31,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2023-11-23 21:54:31,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:31,895 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:32,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:54:32,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-23 21:54:32,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:32,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:32,218 INFO L85 PathProgramCache]: Analyzing trace with hash 386835682, now seen corresponding path program 2 times [2023-11-23 21:54:32,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:32,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728616261] [2023-11-23 21:54:32,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:32,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:32,284 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:32,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728616261] [2023-11-23 21:54:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728616261] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:54:32,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767473677] [2023-11-23 21:54:32,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:54:32,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:32,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:32,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:54:32,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:54:32,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 21:54:32,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:54:32,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:54:32,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:54:32,381 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 21:54:32,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:54:32,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767473677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:32,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:54:32,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 21:54:32,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157410187] [2023-11-23 21:54:32,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:32,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:32,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:54:32,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:32,384 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:32,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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) [2023-11-23 21:54:32,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:32,384 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:32,385 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,376 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:54:34,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:54:34,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:34,589 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:54:34,589 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread3of3ForFork0 was SAFE (1/4) [2023-11-23 21:54:34,591 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:34,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 21:54:34,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:34,592 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-23 21:54:34,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (10)] Waiting until timeout for monitored process [2023-11-23 21:54:34,595 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 21:54:34,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2023-11-23 21:54:34,596 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=LoopHeads, 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;@79e5a431, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:34,596 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:54:34,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:34,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:34,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1468480167, now seen corresponding path program 1 times [2023-11-23 21:54:34,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:34,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802679509] [2023-11-23 21:54:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:54:34,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:34,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802679509] [2023-11-23 21:54:34,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802679509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:34,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:34,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:34,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930365325] [2023-11-23 21:54:34,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:34,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:34,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:34,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:34,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:34,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,711 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:34,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2023-11-23 21:54:34,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 21:54:34,734 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:34,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:34,734 INFO L85 PathProgramCache]: Analyzing trace with hash -2050356354, now seen corresponding path program 1 times [2023-11-23 21:54:34,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:34,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003590635] [2023-11-23 21:54:34,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:34,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:54:34,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:34,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003590635] [2023-11-23 21:54:34,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003590635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:34,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:34,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:34,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949949362] [2023-11-23 21:54:34,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:34,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:34,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:34,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,759 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:34,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2023-11-23 21:54:34,759 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,760 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 21:54:34,782 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:34,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:34,782 INFO L85 PathProgramCache]: Analyzing trace with hash 230232377, now seen corresponding path program 1 times [2023-11-23 21:54:34,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:34,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067066995] [2023-11-23 21:54:34,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:34,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:54:34,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:34,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067066995] [2023-11-23 21:54:34,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067066995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:34,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:34,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:34,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748622606] [2023-11-23 21:54:34,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:34,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:34,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:34,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:34,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,813 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:34,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 21:54:34,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,813 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 21:54:34,837 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:34,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:34,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1766319710, now seen corresponding path program 1 times [2023-11-23 21:54:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:34,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393647087] [2023-11-23 21:54:34,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:34,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:54:34,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:34,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393647087] [2023-11-23 21:54:34,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393647087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:34,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:34,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:34,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237144823] [2023-11-23 21:54:34,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:34,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:34,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:34,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:34,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:34,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,875 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:34,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-23 21:54:34,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:34,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 21:54:34,927 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:34,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:34,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1862504958, now seen corresponding path program 1 times [2023-11-23 21:54:34,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:34,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286711094] [2023-11-23 21:54:34,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:34,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:54:35,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:35,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286711094] [2023-11-23 21:54:35,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286711094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:35,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:35,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:35,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114515607] [2023-11-23 21:54:35,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:35,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:35,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:35,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:35,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:35,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,004 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:35,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2023-11-23 21:54:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,004 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 21:54:35,055 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:35,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:35,055 INFO L85 PathProgramCache]: Analyzing trace with hash 3880092, now seen corresponding path program 1 times [2023-11-23 21:54:35,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:35,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817603177] [2023-11-23 21:54:35,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:35,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:54:35,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:35,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817603177] [2023-11-23 21:54:35,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817603177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:35,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:35,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:35,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527867524] [2023-11-23 21:54:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:35,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:35,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:35,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:35,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,097 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:35,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-11-23 21:54:35,097 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-23 21:54:35,122 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:35,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash 299892091, now seen corresponding path program 1 times [2023-11-23 21:54:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123273034] [2023-11-23 21:54:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:54:35,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:35,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123273034] [2023-11-23 21:54:35,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123273034] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:35,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:35,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:35,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767965550] [2023-11-23 21:54:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:35,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:35,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:35,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,157 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:35,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:54:35,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-23 21:54:35,189 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:35,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:35,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1514346300, now seen corresponding path program 1 times [2023-11-23 21:54:35,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:35,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108232560] [2023-11-23 21:54:35,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:35,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:54:35,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:35,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108232560] [2023-11-23 21:54:35,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108232560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:35,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:35,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506903877] [2023-11-23 21:54:35,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:35,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:35,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:35,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:35,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:35,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,224 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:35,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2023-11-23 21:54:35,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,224 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,225 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-23 21:54:35,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:35,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:35,297 INFO L85 PathProgramCache]: Analyzing trace with hash 2116321573, now seen corresponding path program 1 times [2023-11-23 21:54:35,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:35,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635402447] [2023-11-23 21:54:35,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:35,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635402447] [2023-11-23 21:54:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635402447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:54:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072608128] [2023-11-23 21:54:35,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:35,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:35,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:35,332 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:54:35,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 21:54:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:35,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:54:35,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:54:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:35,428 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:54:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:35,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072608128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:54:35,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:54:35,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-23 21:54:35,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645854843] [2023-11-23 21:54:35,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:54:35,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:54:35,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:35,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:54:35,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:54:35,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,447 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:35,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2023-11-23 21:54:35,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,447 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,448 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:35,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 21:54:35,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-23 21:54:35,729 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:35,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:35,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1703892290, now seen corresponding path program 2 times [2023-11-23 21:54:35,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:35,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570416699] [2023-11-23 21:54:35,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:35,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:54:35,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570416699] [2023-11-23 21:54:35,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570416699] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:54:35,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901863295] [2023-11-23 21:54:35,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:54:35,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:35,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:35,769 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:54:35,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 21:54:35,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:54:35,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:54:35,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:54:35,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:54:35,882 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:54:35,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:54:35,904 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:54:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901863295] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:54:35,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:54:35,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-23 21:54:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186244026] [2023-11-23 21:54:35,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:54:35,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:54:35,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:35,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:54:35,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:54:35,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,906 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:35,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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) [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,906 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:35,907 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:35,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:35,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 21:54:36,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,12 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:36,167 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-23 21:54:36,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:36,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1033058724, now seen corresponding path program 1 times [2023-11-23 21:54:36,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:36,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026232265] [2023-11-23 21:54:36,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:36,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:36,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:54:36,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:54:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:54:36,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 21:54:36,334 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:54:36,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-11-23 21:54:36,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-23 21:54:36,336 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:54:36,336 INFO L307 ceAbstractionStarter]: Result for error location ULTIMATE.start was UNSAFE (2/4) [2023-11-23 21:54:36,337 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 21:54:36,337 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-23 21:54:36,372 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 21:54:36,373 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:36,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 21:54:36,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:36,375 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-23 21:54:36,383 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 21:54:36,384 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread3of4ForFork0 ======== [2023-11-23 21:54:36,384 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=LoopHeads, 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;@79e5a431, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:54:36,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:54:36,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (13)] Waiting until timeout for monitored process [2023-11-23 21:54:36,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:36,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash 735468753, now seen corresponding path program 1 times [2023-11-23 21:54:36,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:36,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538814756] [2023-11-23 21:54:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:36,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:36,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:36,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538814756] [2023-11-23 21:54:36,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538814756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:36,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:36,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335883903] [2023-11-23 21:54:36,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:36,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:36,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:36,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:36,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,525 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:36,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2023-11-23 21:54:36,525 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-23 21:54:36,550 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:36,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:36,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1471778122, now seen corresponding path program 1 times [2023-11-23 21:54:36,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:36,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466429611] [2023-11-23 21:54:36,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:36,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:54:36,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:36,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466429611] [2023-11-23 21:54:36,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466429611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:36,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:36,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:36,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185499435] [2023-11-23 21:54:36,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:36,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:36,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:36,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:36,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:36,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,578 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:36,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-23 21:54:36,578 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,578 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-11-23 21:54:36,604 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:36,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:36,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1684101711, now seen corresponding path program 1 times [2023-11-23 21:54:36,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:36,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232786144] [2023-11-23 21:54:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:36,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:36,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:54:36,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:36,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232786144] [2023-11-23 21:54:36,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232786144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:36,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:36,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:36,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462312233] [2023-11-23 21:54:36,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:36,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:36,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:36,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:36,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:36,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,633 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2023-11-23 21:54:36,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,633 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-23 21:54:36,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:36,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:36,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1342965590, now seen corresponding path program 1 times [2023-11-23 21:54:36,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:36,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552970095] [2023-11-23 21:54:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:36,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:36,692 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:36,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:36,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552970095] [2023-11-23 21:54:36,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552970095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:36,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:36,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:36,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730513320] [2023-11-23 21:54:36,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:36,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:36,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:36,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:36,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:36,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,694 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:36,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-23 21:54:36,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,694 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-23 21:54:36,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:36,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:36,747 INFO L85 PathProgramCache]: Analyzing trace with hash -149125010, now seen corresponding path program 1 times [2023-11-23 21:54:36,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:36,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545081667] [2023-11-23 21:54:36,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:36,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:36,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:36,784 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:54:36,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:36,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545081667] [2023-11-23 21:54:36,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545081667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:36,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:36,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:36,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160695579] [2023-11-23 21:54:36,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:36,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:36,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:36,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:36,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:36,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,786 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:36,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2023-11-23 21:54:36,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,786 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,787 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-23 21:54:36,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:36,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:36,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1900134108, now seen corresponding path program 1 times [2023-11-23 21:54:36,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:36,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993884333] [2023-11-23 21:54:36,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:36,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:54:36,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:36,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993884333] [2023-11-23 21:54:36,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993884333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:36,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:54:36,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:54:36,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740570429] [2023-11-23 21:54:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:36,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:36,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:36,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:54:36,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:36,893 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:36,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-11-23 21:54:36,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:36,894 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-23 21:54:37,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:37,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:37,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1768550403, now seen corresponding path program 1 times [2023-11-23 21:54:37,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:37,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285868095] [2023-11-23 21:54:37,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:37,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:37,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285868095] [2023-11-23 21:54:37,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285868095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:54:37,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555835966] [2023-11-23 21:54:37,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:37,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:37,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:37,065 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:54:37,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 21:54:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:37,168 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:54:37,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:54:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:37,180 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:54:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:54:37,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555835966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:54:37,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:54:37,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-23 21:54:37,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564697980] [2023-11-23 21:54:37,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:54:37,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:54:37,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:37,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:54:37,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:54:37,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:37,196 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:37,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2023-11-23 21:54:37,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:37,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 21:54:37,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-23 21:54:37,503 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:54:37,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:54:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1338116166, now seen corresponding path program 2 times [2023-11-23 21:54:37,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:54:37,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018711559] [2023-11-23 21:54:37,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:54:37,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:54:37,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:54:37,543 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:54:37,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:54:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018711559] [2023-11-23 21:54:37,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018711559] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:54:37,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716589361] [2023-11-23 21:54:37,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:54:37,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:54:37,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:54:37,545 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:54:37,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 21:54:37,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 21:54:37,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:54:37,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:54:37,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:54:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 21:54:37,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:54:37,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716589361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:54:37,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:54:37,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 21:54:37,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581012250] [2023-11-23 21:54:37,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:54:37,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:54:37,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:54:37,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:54:37,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:54:37,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:54:37,679 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:54:37,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2023-11-23 21:54:37,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,679 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:54:37,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:54:37,680 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:55:11,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:55:11,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 21:55:11,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,15 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:55:11,547 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-11-23 21:55:11,548 INFO L307 ceAbstractionStarter]: Result for error location thr1Thread3of4ForFork0 was SAFE (1/5) [2023-11-23 21:55:11,552 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:55:11,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-23 21:55:11,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:55:11,553 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-23 21:55:11,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (16)] Waiting until timeout for monitored process [2023-11-23 21:55:11,573 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-23 21:55:11,573 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == thr1Thread4of4ForFork0 ======== [2023-11-23 21:55:11,574 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=LoopHeads, 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;@79e5a431, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:55:11,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:55:11,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:11,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:11,681 INFO L85 PathProgramCache]: Analyzing trace with hash 628240414, now seen corresponding path program 1 times [2023-11-23 21:55:11,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:11,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492359530] [2023-11-23 21:55:11,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:11,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 21:55:11,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:11,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492359530] [2023-11-23 21:55:11,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492359530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:11,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:55:11,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:55:11,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952637088] [2023-11-23 21:55:11,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:11,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:11,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:11,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:11,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:55:11,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,707 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:11,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2023-11-23 21:55:11,708 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-23 21:55:11,739 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:11,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:11,739 INFO L85 PathProgramCache]: Analyzing trace with hash -142874343, now seen corresponding path program 1 times [2023-11-23 21:55:11,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:11,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116833944] [2023-11-23 21:55:11,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:11,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:11,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:11,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:55:11,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:11,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116833944] [2023-11-23 21:55:11,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116833944] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:11,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:55:11,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:55:11,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840252129] [2023-11-23 21:55:11,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:11,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:11,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:11,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:11,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:55:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,768 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:11,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2023-11-23 21:55:11,768 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,768 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-23 21:55:11,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:11,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:11,798 INFO L85 PathProgramCache]: Analyzing trace with hash 983407422, now seen corresponding path program 1 times [2023-11-23 21:55:11,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:11,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480271123] [2023-11-23 21:55:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:11,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:11,826 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:55:11,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:11,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480271123] [2023-11-23 21:55:11,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480271123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:11,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:55:11,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:55:11,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026938604] [2023-11-23 21:55:11,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:11,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:11,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:11,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:11,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:55:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,829 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:11,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2023-11-23 21:55:11,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,830 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-11-23 21:55:11,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:11,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:11,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1254543239, now seen corresponding path program 1 times [2023-11-23 21:55:11,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:11,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409093738] [2023-11-23 21:55:11,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:11,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 21:55:11,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:11,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409093738] [2023-11-23 21:55:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409093738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:11,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:55:11,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:55:11,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714907282] [2023-11-23 21:55:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:11,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:11,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:11,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:55:11,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,887 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:11,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-11-23 21:55:11,887 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,887 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,887 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,887 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-11-23 21:55:11,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:11,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1761064354, now seen corresponding path program 1 times [2023-11-23 21:55:11,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:11,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725250543] [2023-11-23 21:55:11,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:11,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:11,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:55:11,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:11,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725250543] [2023-11-23 21:55:11,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725250543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:11,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:55:11,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:55:11,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744724507] [2023-11-23 21:55:11,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:11,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:11,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:11,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:11,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:55:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:11,947 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:11,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-23 21:55:11,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,947 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:11,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-11-23 21:55:12,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:12,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:12,006 INFO L85 PathProgramCache]: Analyzing trace with hash 313581126, now seen corresponding path program 1 times [2023-11-23 21:55:12,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:12,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864840329] [2023-11-23 21:55:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:12,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:12,039 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:55:12,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:12,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864840329] [2023-11-23 21:55:12,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864840329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:12,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:55:12,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:55:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536416952] [2023-11-23 21:55:12,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:12,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:12,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:12,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:55:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,041 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:12,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-23 21:55:12,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,041 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-23 21:55:12,098 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:12,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:12,098 INFO L85 PathProgramCache]: Analyzing trace with hash -773278110, now seen corresponding path program 1 times [2023-11-23 21:55:12,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:12,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472870913] [2023-11-23 21:55:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:12,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:55:12,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:12,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472870913] [2023-11-23 21:55:12,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472870913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:12,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:55:12,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:55:12,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829843788] [2023-11-23 21:55:12,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:12,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:12,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:12,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:12,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:55:12,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,132 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:12,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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) [2023-11-23 21:55:12,132 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,132 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,132 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,133 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-23 21:55:12,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:12,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1344606689, now seen corresponding path program 1 times [2023-11-23 21:55:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:12,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300782318] [2023-11-23 21:55:12,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:12,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 21:55:12,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:12,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300782318] [2023-11-23 21:55:12,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300782318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:12,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:55:12,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:55:12,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722457032] [2023-11-23 21:55:12,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:12,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:12,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:12,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:12,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:55:12,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,198 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:12,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-23 21:55:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-11-23 21:55:12,359 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:12,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:12,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1205767721, now seen corresponding path program 1 times [2023-11-23 21:55:12,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122967035] [2023-11-23 21:55:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:12,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:12,600 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:55:12,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122967035] [2023-11-23 21:55:12,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122967035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:55:12,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403182456] [2023-11-23 21:55:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:12,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:55:12,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:55:12,603 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:55:12,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 21:55:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:12,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:55:12,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:55:12,728 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:55:12,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:55:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 21:55:12,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403182456] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:55:12,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:55:12,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-23 21:55:12,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624160361] [2023-11-23 21:55:12,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:55:12,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:55:12,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:12,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:55:12,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:55:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,746 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:12,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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) [2023-11-23 21:55:12,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,746 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,747 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:55:12,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 21:55:13,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-23 21:55:13,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:55:13,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:55:13,061 INFO L85 PathProgramCache]: Analyzing trace with hash -522017260, now seen corresponding path program 2 times [2023-11-23 21:55:13,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:55:13,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625768683] [2023-11-23 21:55:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:55:13,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:55:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:55:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:55:13,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:55:13,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625768683] [2023-11-23 21:55:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625768683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:55:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972636047] [2023-11-23 21:55:13,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:55:13,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:55:13,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 [2023-11-23 21:55:13,119 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:55:13,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UGemCutter-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 21:55:13,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 21:55:13,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:55:13,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 21:55:13,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:55:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 21:55:13,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:55:13,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972636047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:55:13,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:55:13,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-23 21:55:13,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471445257] [2023-11-23 21:55:13,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:55:13,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:55:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:55:13,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:55:13,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:55:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:55:13,231 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-23 21:55:13,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 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) [2023-11-23 21:55:13,231 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:55:13,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.