/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57 [2021-07-01 13:46:08,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-01 13:46:08,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-01 13:46:08,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-01 13:46:08,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-01 13:46:08,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-01 13:46:08,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-01 13:46:08,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-01 13:46:09,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-01 13:46:09,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-01 13:46:09,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-01 13:46:09,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-01 13:46:09,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-01 13:46:09,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-01 13:46:09,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-01 13:46:09,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-01 13:46:09,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-01 13:46:09,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-01 13:46:09,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-01 13:46:09,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-01 13:46:09,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-01 13:46:09,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-01 13:46:09,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-01 13:46:09,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-01 13:46:09,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-01 13:46:09,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-01 13:46:09,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-01 13:46:09,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-01 13:46:09,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-01 13:46:09,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-01 13:46:09,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-01 13:46:09,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-01 13:46:09,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-01 13:46:09,027 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Random7777.epf [2021-07-01 13:46:09,072 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-01 13:46:09,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-01 13:46:09,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-01 13:46:09,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-01 13:46:09,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-01 13:46:09,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-01 13:46:09,075 INFO L138 SettingsManager]: * Use SBE=true [2021-07-01 13:46:09,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-01 13:46:09,075 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-01 13:46:09,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-01 13:46:09,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-01 13:46:09,076 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-01 13:46:09,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-01 13:46:09,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-01 13:46:09,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-01 13:46:09,076 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-01 13:46:09,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-01 13:46:09,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-01 13:46:09,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-01 13:46:09,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-01 13:46:09,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-01 13:46:09,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-01 13:46:09,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-01 13:46:09,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 13:46:09,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-01 13:46:09,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-01 13:46:09,078 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-01 13:46:09,079 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-01 13:46:09,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-01 13:46:09,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-01 13:46:09,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-01 13:46:09,355 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-01 13:46:09,356 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-01 13:46:09,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized06.bpl [2021-07-01 13:46:09,356 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized06.bpl' [2021-07-01 13:46:09,386 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-01 13:46:09,388 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-01 13:46:09,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-01 13:46:09,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-01 13:46:09,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-01 13:46:09,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-01 13:46:09,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-01 13:46:09,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-01 13:46:09,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-01 13:46:09,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... [2021-07-01 13:46:09,427 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-01 13:46:09,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-01 13:46:09,428 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-01 13:46:09,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-01 13:46:09,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-01 13:46:09,501 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-01 13:46:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-01 13:46:09,501 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-01 13:46:09,501 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-01 13:46:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-01 13:46:09,501 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-01 13:46:09,501 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-01 13:46:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-01 13:46:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-01 13:46:09,502 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-01 13:46:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-01 13:46:09,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-01 13:46:09,502 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-01 13:46:09,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-01 13:46:09,748 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-01 13:46:09,748 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-01 13:46:09,749 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-01 13:46:09,750 INFO L202 PluginConnector]: Adding new model bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:46:09 BoogieIcfgContainer [2021-07-01 13:46:09,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-01 13:46:09,751 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-01 13:46:09,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-01 13:46:09,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-01 13:46:09,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:46:09" (1/2) ... [2021-07-01 13:46:09,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dc05251 and model type bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:46:09, skipping insertion in model container [2021-07-01 13:46:09,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:46:09" (2/2) ... [2021-07-01 13:46:09,755 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-customized06.bpl [2021-07-01 13:46:09,758 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-01 13:46:09,758 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-01 13:46:09,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-01 13:46:09,759 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-01 13:46:09,815 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-01 13:46:09,832 INFO L255 AbstractCegarLoop]: Starting to check reachability of 7 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-01 13:46:09,968 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 13:46:09,968 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 13:46:09,968 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 13:46:09,968 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 13:46:09,968 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 13:46:09,968 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 13:46:09,968 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 13:46:09,969 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-01 13:46:29,332 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-01 13:46:29,333 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-01 13:46:29,349 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-01 13:46:29,349 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-01 13:46:29,349 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-01 13:46:29,349 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-01 13:46:29,349 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-01 13:46:29,349 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-01 13:46:29,349 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-01 13:46:29,349 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-01 13:46:29,453 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 13:46:29,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 13:46:29,456 INFO L82 PathProgramCache]: Analyzing trace with hash 107812247, now seen corresponding path program 1 times [2021-07-01 13:46:29,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 13:46:29,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147480842] [2021-07-01 13:46:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 13:46:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-01 13:46:29,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 13:46:29,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147480842] [2021-07-01 13:46:29,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147480842] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 13:46:29,531 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 13:46:29,531 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-01 13:46:29,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711830791] [2021-07-01 13:46:29,535 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-01 13:46:29,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 13:46:29,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-01 13:46:29,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-01 13:46:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:29,544 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 13:46:29,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-07-01 13:46:29,544 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:29,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-01 13:46:29,735 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 13:46:29,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 13:46:29,736 INFO L82 PathProgramCache]: Analyzing trace with hash 431249258, now seen corresponding path program 1 times [2021-07-01 13:46:29,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 13:46:29,736 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495266389] [2021-07-01 13:46:29,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 13:46:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:29,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-01 13:46:29,913 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 13:46:29,914 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495266389] [2021-07-01 13:46:29,914 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495266389] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 13:46:29,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 13:46:29,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-01 13:46:29,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151800556] [2021-07-01 13:46:29,915 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-01 13:46:29,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 13:46:29,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-01 13:46:29,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-07-01 13:46:29,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:29,917 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 13:46:29,917 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 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) [2021-07-01 13:46:29,917 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:29,917 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:30,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 13:46:30,148 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-01 13:46:30,149 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 13:46:30,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 13:46:30,149 INFO L82 PathProgramCache]: Analyzing trace with hash 518024142, now seen corresponding path program 1 times [2021-07-01 13:46:30,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 13:46:30,149 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411560232] [2021-07-01 13:46:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 13:46:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 13:46:30,210 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 13:46:30,210 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411560232] [2021-07-01 13:46:30,211 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411560232] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-01 13:46:30,211 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-01 13:46:30,211 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-01 13:46:30,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196573349] [2021-07-01 13:46:30,211 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 13:46:30,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 13:46:30,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 13:46:30,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-07-01 13:46:30,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:30,212 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 13:46:30,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 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) [2021-07-01 13:46:30,212 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:30,212 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 13:46:30,212 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:30,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 13:46:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 13:46:30,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-01 13:46:30,706 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 13:46:30,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 13:46:30,706 INFO L82 PathProgramCache]: Analyzing trace with hash -29673247, now seen corresponding path program 1 times [2021-07-01 13:46:30,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 13:46:30,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004221088] [2021-07-01 13:46:30,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 13:46:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 13:46:30,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 13:46:30,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004221088] [2021-07-01 13:46:30,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004221088] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 13:46:30,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730481083] [2021-07-01 13:46:30,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-07-01 13:46:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:30,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-01 13:46:30,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 13:46:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 13:46:30,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730481083] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 13:46:30,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 13:46:30,876 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-07-01 13:46:30,876 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007312843] [2021-07-01 13:46:30,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-01 13:46:30,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 13:46:30,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-01 13:46:30,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-01 13:46:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:30,877 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 13:46:30,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 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) [2021-07-01 13:46:30,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:30,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 13:46:30,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 13:46:30,877 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 13:46:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 13:46:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 13:46:33,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 13:46:33,633 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 13:46:33,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 13:46:33,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1916942390, now seen corresponding path program 1 times [2021-07-01 13:46:33,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 13:46:33,633 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604182611] [2021-07-01 13:46:33,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 13:46:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:33,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 13:46:33,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 13:46:33,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604182611] [2021-07-01 13:46:33,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604182611] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 13:46:33,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253710506] [2021-07-01 13:46:33,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 13:46:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:33,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-01 13:46:33,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 13:46:33,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-01 13:46:33,821 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253710506] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 13:46:33,821 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 13:46:33,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-07-01 13:46:33,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249121540] [2021-07-01 13:46:33,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-01 13:46:33,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 13:46:33,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-01 13:46:33,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-07-01 13:46:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:33,826 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 13:46:33,826 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 6 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) [2021-07-01 13:46:33,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:33,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 13:46:33,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 13:46:33,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 13:46:33,826 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-01 13:46:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 13:46:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-01 13:46:47,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-01 13:46:47,897 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 13:46:47,898 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-01 13:46:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-01 13:46:47,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1219725752, now seen corresponding path program 1 times [2021-07-01 13:46:47,898 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-01 13:46:47,898 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717725949] [2021-07-01 13:46:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-01 13:46:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-01 13:46:47,972 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-01 13:46:47,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717725949] [2021-07-01 13:46:47,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717725949] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 13:46:47,972 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636039980] [2021-07-01 13:46:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-01 13:46:48,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-01 13:46:48,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 22 conjunts are in the unsatisfiable core [2021-07-01 13:46:48,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-01 13:46:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-01 13:46:48,148 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636039980] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-01 13:46:48,148 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-01 13:46:48,148 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 14 [2021-07-01 13:46:48,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422383293] [2021-07-01 13:46:48,149 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-01 13:46:48,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-01 13:46:48,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-01 13:46:48,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2021-07-01 13:46:48,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-01 13:46:48,151 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-01 13:46:48,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.266666666666667) internal successors, (79), 14 states have internal predecessors, (79), 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) [2021-07-01 13:46:48,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-01 13:46:48,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-01 13:46:48,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 13:46:48,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-01 13:46:48,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-01 13:46:48,151 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.