/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-NewStatesSleepUncond-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 20:27:17,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:27:17,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:27:17,516 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 20:27:17,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:27:17,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:27:17,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:27:17,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:27:17,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:27:17,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:27:17,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:27:17,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:27:17,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:27:17,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:27:17,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:27:17,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:27:17,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 20:27:17,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-24 20:27:17,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-24 20:27:17,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-24 20:27:17,580 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-NewStatesSleepUncond-NoLbe.epf [2021-06-24 20:27:17,636 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:27:17,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:27:17,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:27:17,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:27:17,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:27:17,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:27:17,640 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:27:17,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:27:17,641 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:27:17,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:27:17,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:27:17,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:27:17,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:27:17,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:27:17,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:27:17,642 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:27:17,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:27:17,643 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:27:17,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:27:17,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:27:17,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:27:17,643 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:27:17,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:27:17,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:27:17,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:27:17,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:27:17,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:27:17,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:27:17,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:27:17,644 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:27:17,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:27:17,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:27:17,645 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 20:27:17,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 20:27:17,645 INFO L138 SettingsManager]: * Use conditional POR in concurrent analysis=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:27:17,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:27:18,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:27:18,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:27:18,005 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:27:18,006 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:27:18,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04.bpl [2021-06-24 20:27:18,007 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth04.bpl' [2021-06-24 20:27:18,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:27:18,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:27:18,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:27:18,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:27:18,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:27:18,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:27:18,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:27:18,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:27:18,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:27:18,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:27:18,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:27:18,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:27:18,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:27:18,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (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 [2021-06-24 20:27:18,154 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:27:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:27:18,154 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:27:18,154 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:27:18,154 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:27:18,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:27:18,155 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:27:18,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:27:18,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:27:18,156 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 20:27:18,479 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:27:18,479 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:27:18,480 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 20:27:18,481 INFO L202 PluginConnector]: Adding new model bluetooth04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:27:18 BoogieIcfgContainer [2021-06-24 20:27:18,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:27:18,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:27:18,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:27:18,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:27:18,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/2) ... [2021-06-24 20:27:18,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ef8d6ae and model type bluetooth04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:27:18, skipping insertion in model container [2021-06-24 20:27:18,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:27:18" (2/2) ... [2021-06-24 20:27:18,488 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth04.bpl [2021-06-24 20:27:18,493 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:27:18,493 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:27:18,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:27:18,494 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:27:18,570 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:27:18,592 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 [2021-06-24 20:27:18,656 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:18,656 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:18,656 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:18,657 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:18,657 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:18,657 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:18,658 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:18,658 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-24 20:27:19,196 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/5) [2021-06-24 20:27:19,198 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 [2021-06-24 20:27:19,209 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:19,209 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:19,209 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:19,209 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:19,209 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:19,209 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:19,209 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:19,210 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork4======== [2021-06-24 20:27:19,217 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,223 INFO L82 PathProgramCache]: Analyzing trace with hash 267465660, now seen corresponding path program 1 times [2021-06-24 20:27:19,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,230 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984790936] [2021-06-24 20:27:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:19,327 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984790936] [2021-06-24 20:27:19,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984790936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:27:19,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221874196] [2021-06-24 20:27:19,332 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:19,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:19,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,344 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,344 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-06-24 20:27:19,344 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,434 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:27:19,434 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1113816432, now seen corresponding path program 1 times [2021-06-24 20:27:19,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,435 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041503247] [2021-06-24 20:27:19,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:19,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041503247] [2021-06-24 20:27:19,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041503247] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:27:19,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438134930] [2021-06-24 20:27:19,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:19,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:19,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,453 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.0) 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) [2021-06-24 20:27:19,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,489 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:27:19,489 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,490 INFO L82 PathProgramCache]: Analyzing trace with hash 739787481, now seen corresponding path program 1 times [2021-06-24 20:27:19,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,490 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148006592] [2021-06-24 20:27:19,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:19,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148006592] [2021-06-24 20:27:19,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148006592] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 20:27:19,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61233417] [2021-06-24 20:27:19,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 20:27:19,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 20:27:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 20:27:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,549 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,549 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2021-06-24 20:27:19,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,549 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:19,632 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 20:27:19,633 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,634 INFO L82 PathProgramCache]: Analyzing trace with hash -353376291, now seen corresponding path program 1 times [2021-06-24 20:27:19,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437072136] [2021-06-24 20:27:19,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,742 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-24 20:27:19,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437072136] [2021-06-24 20:27:19,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437072136] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,743 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,743 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:27:19,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161382416] [2021-06-24 20:27:19,743 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:27:19,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:27:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:27:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,744 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) [2021-06-24 20:27:19,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:19,745 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:19,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:19,923 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 20:27:19,923 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1160624329, now seen corresponding path program 1 times [2021-06-24 20:27:19,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697260430] [2021-06-24 20:27:19,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:20,100 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-24 20:27:20,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:20,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697260430] [2021-06-24 20:27:20,101 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697260430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:20,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392407286] [2021-06-24 20:27:20,101 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:20,193 WARN L261 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 54 conjunts are in the unsatisfiable core [2021-06-24 20:27:20,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-24 20:27:20,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392407286] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:20,411 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:20,411 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:27:20,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664702328] [2021-06-24 20:27:20,411 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:27:20,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:20,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:27:20,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:27:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,413 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:20,413 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.461538461538462) internal successors, (71), 12 states have internal predecessors, (71), 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) [2021-06-24 20:27:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:20,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:21,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:21,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:21,616 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:21,616 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:21,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:21,617 INFO L82 PathProgramCache]: Analyzing trace with hash -148536587, now seen corresponding path program 1 times [2021-06-24 20:27:21,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:21,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101917706] [2021-06-24 20:27:21,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 168 proven. 29 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-06-24 20:27:21,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:21,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101917706] [2021-06-24 20:27:21,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101917706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:21,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184164540] [2021-06-24 20:27:21,901 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 [2021-06-24 20:27:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:22,000 WARN L261 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 129 conjunts are in the unsatisfiable core [2021-06-24 20:27:22,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:22,306 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 2 proven. 195 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-06-24 20:27:22,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184164540] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:22,307 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:22,307 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:27:22,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583293846] [2021-06-24 20:27:22,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:27:22,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:22,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:27:22,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:27:22,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,310 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:22,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 14 states have internal predecessors, (97), 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) [2021-06-24 20:27:22,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:22,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:22,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:22,311 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:24,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:24,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-24 20:27:24,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:24,405 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork4 was SAFE (2/5) [2021-06-24 20:27:24,406 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:27:24,414 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:24,414 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:24,414 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:24,414 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:24,414 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:24,414 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:24,414 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:24,414 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork2======== [2021-06-24 20:27:24,417 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:24,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:24,417 INFO L82 PathProgramCache]: Analyzing trace with hash 968380617, now seen corresponding path program 1 times [2021-06-24 20:27:24,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:24,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333047243] [2021-06-24 20:27:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:24,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:24,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:24,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333047243] [2021-06-24 20:27:24,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333047243] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:24,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:24,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:27:24,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289044878] [2021-06-24 20:27:24,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:24,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:24,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:24,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:24,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:24,437 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:24,437 INFO L483 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) [2021-06-24 20:27:24,437 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:24,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-24 20:27:24,497 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:24,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:24,498 INFO L82 PathProgramCache]: Analyzing trace with hash -983291491, now seen corresponding path program 1 times [2021-06-24 20:27:24,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:24,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740513155] [2021-06-24 20:27:24,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:24,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:24,511 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:24,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740513155] [2021-06-24 20:27:24,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740513155] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:24,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:24,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:27:24,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426649118] [2021-06-24 20:27:24,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:24,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:24,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:24,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:24,514 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:24,514 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 5.0) 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) [2021-06-24 20:27:24,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,514 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,546 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-24 20:27:24,547 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:24,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:24,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1999027116, now seen corresponding path program 1 times [2021-06-24 20:27:24,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:24,548 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312720026] [2021-06-24 20:27:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:24,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-24 20:27:24,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:24,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312720026] [2021-06-24 20:27:24,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312720026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:24,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:24,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:27:24,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061900361] [2021-06-24 20:27:24,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:27:24,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:24,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:27:24,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:27:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:24,630 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:24,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) [2021-06-24 20:27:24,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:24,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:24,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-24 20:27:24,725 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:24,725 INFO L82 PathProgramCache]: Analyzing trace with hash -605822038, now seen corresponding path program 1 times [2021-06-24 20:27:24,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:24,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179723125] [2021-06-24 20:27:24,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:24,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:24,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179723125] [2021-06-24 20:27:24,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179723125] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:24,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910033291] [2021-06-24 20:27:24,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:24,874 WARN L261 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-24 20:27:24,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:25,003 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:25,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910033291] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:25,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:25,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:27:25,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129987118] [2021-06-24 20:27:25,004 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:27:25,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:25,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:27:25,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:27:25,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:25,005 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:25,005 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 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) [2021-06-24 20:27:25,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:25,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:25,005 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:25,006 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:25,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:25,710 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:25,711 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:25,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:25,711 INFO L82 PathProgramCache]: Analyzing trace with hash 29551937, now seen corresponding path program 1 times [2021-06-24 20:27:25,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:25,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919448643] [2021-06-24 20:27:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 82 proven. 10 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-06-24 20:27:25,853 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:25,853 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919448643] [2021-06-24 20:27:25,853 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919448643] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:25,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311969931] [2021-06-24 20:27:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:25,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:25,924 WARN L261 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 109 conjunts are in the unsatisfiable core [2021-06-24 20:27:25,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-06-24 20:27:26,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311969931] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:26,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:26,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:27:26,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846269038] [2021-06-24 20:27:26,205 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:27:26,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:26,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:27:26,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:27:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:26,206 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:26,206 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 14 states have internal predecessors, (85), 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) [2021-06-24 20:27:26,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:26,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:26,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:26,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:26,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:27,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:27,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-24 20:27:27,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:27,674 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork2 was SAFE (3/5) [2021-06-24 20:27:27,675 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-06-24 20:27:27,688 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:27,688 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:27,688 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:27,688 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:27,688 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:27,688 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:27,688 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:27,688 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork3======== [2021-06-24 20:27:27,690 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:27,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:27,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1394133532, now seen corresponding path program 1 times [2021-06-24 20:27:27,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:27,691 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653033296] [2021-06-24 20:27:27,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:27:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:27,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:27,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653033296] [2021-06-24 20:27:27,705 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653033296] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:27,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:27,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:27:27,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952543344] [2021-06-24 20:27:27,706 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:27,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:27,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:27,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:27,707 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:27,707 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-06-24 20:27:27,707 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:27,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-24 20:27:27,768 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:27,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:27,768 INFO L82 PathProgramCache]: Analyzing trace with hash -50320968, now seen corresponding path program 1 times [2021-06-24 20:27:27,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:27,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385279398] [2021-06-24 20:27:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:27,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:27,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:27,789 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:27,789 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385279398] [2021-06-24 20:27:27,789 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385279398] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:27,789 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:27,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:27:27,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067328648] [2021-06-24 20:27:27,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:27,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:27,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:27,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:27,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:27,791 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:27,791 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 6.0) 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) [2021-06-24 20:27:27,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-24 20:27:27,818 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:27,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:27,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1943432953, now seen corresponding path program 1 times [2021-06-24 20:27:27,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:27,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105703152] [2021-06-24 20:27:27,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-24 20:27:27,865 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:27,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105703152] [2021-06-24 20:27:27,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105703152] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:27,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:27,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:27:27,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686134521] [2021-06-24 20:27:27,866 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:27:27,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:27,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:27:27,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:27:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:27,866 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:27,866 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) [2021-06-24 20:27:27,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,867 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:27,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:27,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-24 20:27:27,968 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:27,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:27,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1042073418, now seen corresponding path program 1 times [2021-06-24 20:27:27,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:27,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98521724] [2021-06-24 20:27:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:28,029 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:28,030 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:28,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98521724] [2021-06-24 20:27:28,030 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98521724] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:28,030 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970256662] [2021-06-24 20:27:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:28,060 WARN L261 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-24 20:27:28,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:28,197 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970256662] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:28,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:28,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:27:28,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886949555] [2021-06-24 20:27:28,198 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:27:28,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:28,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:27:28,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:27:28,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:28,198 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:28,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 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) [2021-06-24 20:27:28,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:28,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:28,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:28,199 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:28,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:28,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:28,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:28,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-24 20:27:28,998 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:28,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:28,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1827455281, now seen corresponding path program 1 times [2021-06-24 20:27:28,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:28,999 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190241689] [2021-06-24 20:27:28,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 133 proven. 6 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-06-24 20:27:29,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:29,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190241689] [2021-06-24 20:27:29,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190241689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:29,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510334457] [2021-06-24 20:27:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:29,182 WARN L261 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 119 conjunts are in the unsatisfiable core [2021-06-24 20:27:29,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 2 proven. 137 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-06-24 20:27:29,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510334457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:29,408 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:29,408 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:27:29,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274451980] [2021-06-24 20:27:29,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:27:29,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:29,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:27:29,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:27:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:29,409 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:29,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.066666666666666) internal successors, (91), 14 states have internal predecessors, (91), 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) [2021-06-24 20:27:29,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:29,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:29,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:29,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:29,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-24 20:27:30,526 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-06-24 20:27:30,527 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork3 was SAFE (4/5) [2021-06-24 20:27:30,528 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:27:30,531 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:30,531 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:30,531 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:30,531 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:30,531 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:30,532 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:30,532 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:30,532 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork1======== [2021-06-24 20:27:30,534 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:30,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:30,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1800107622, now seen corresponding path program 1 times [2021-06-24 20:27:30,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:30,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499146486] [2021-06-24 20:27:30,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:30,546 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:30,546 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499146486] [2021-06-24 20:27:30,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499146486] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:30,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:30,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:27:30,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466678222] [2021-06-24 20:27:30,546 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:30,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:30,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:30,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:30,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:30,547 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:30,547 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2021-06-24 20:27:30,547 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:30,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-24 20:27:30,609 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:30,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:30,609 INFO L82 PathProgramCache]: Analyzing trace with hash 2104002414, now seen corresponding path program 1 times [2021-06-24 20:27:30,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:30,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440064524] [2021-06-24 20:27:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:30,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:30,616 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:30,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440064524] [2021-06-24 20:27:30,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440064524] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:30,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:30,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:27:30,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901864137] [2021-06-24 20:27:30,616 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:30,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:30,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:30,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:30,617 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:30,617 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) 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) [2021-06-24 20:27:30,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,617 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,647 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-24 20:27:30,647 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:30,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1378833118, now seen corresponding path program 1 times [2021-06-24 20:27:30,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:30,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725057730] [2021-06-24 20:27:30,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:30,696 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-24 20:27:30,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:30,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725057730] [2021-06-24 20:27:30,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725057730] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:30,697 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:30,697 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:27:30,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892043126] [2021-06-24 20:27:30,697 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:27:30,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:30,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:27:30,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:27:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:30,698 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:30,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 6 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) [2021-06-24 20:27:30,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,698 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:30,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-24 20:27:30,783 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:30,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:30,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1479666380, now seen corresponding path program 1 times [2021-06-24 20:27:30,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:30,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720046340] [2021-06-24 20:27:30,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:30,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:30,839 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:30,839 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:30,839 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720046340] [2021-06-24 20:27:30,839 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720046340] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:30,840 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796382324] [2021-06-24 20:27:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:30,878 WARN L261 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-24 20:27:30,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-24 20:27:31,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796382324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:31,011 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:31,011 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:27:31,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286360726] [2021-06-24 20:27:31,011 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:27:31,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:31,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:27:31,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:27:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:31,012 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:31,012 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 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) [2021-06-24 20:27:31,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:31,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:31,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:31,012 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:31,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:31,583 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:31,584 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:31,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:31,584 INFO L82 PathProgramCache]: Analyzing trace with hash -2069170533, now seen corresponding path program 1 times [2021-06-24 20:27:31,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:31,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206757880] [2021-06-24 20:27:31,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 80 proven. 5 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-24 20:27:31,687 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:31,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206757880] [2021-06-24 20:27:31,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206757880] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:31,687 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436151056] [2021-06-24 20:27:31,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:31,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:31,735 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 99 conjunts are in the unsatisfiable core [2021-06-24 20:27:31,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 2 proven. 83 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-24 20:27:31,946 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436151056] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:31,946 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:31,946 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:27:31,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830519257] [2021-06-24 20:27:31,947 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:27:31,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:31,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:27:31,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:27:31,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:31,947 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:31,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 14 states have internal predecessors, (85), 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) [2021-06-24 20:27:31,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:31,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:31,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:31,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:31,948 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:32,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:32,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-24 20:27:33,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-06-24 20:27:33,079 INFO L301 ceAbstractionStarter]: Result for error location DeviceThreadThread1of1ForFork1 was SAFE (5/5) [2021-06-24 20:27:33,079 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-24 20:27:33,082 INFO L202 PluginConnector]: Adding new model bluetooth04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.06 08:27:33 BasicIcfg [2021-06-24 20:27:33,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-24 20:27:33,083 INFO L168 Benchmark]: Toolchain (without parser) took 15052.19 ms. Allocated memory was 201.3 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 182.1 MB in the beginning and 1.2 GB in the end (delta: -969.7 MB). Peak memory consumption was 916.1 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:33,083 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 201.3 MB. Free memory is still 183.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-24 20:27:33,083 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.64 ms. Allocated memory is still 201.3 MB. Free memory was 182.0 MB in the beginning and 180.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:33,083 INFO L168 Benchmark]: Boogie Preprocessor took 13.58 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 179.4 MB in the end (delta: 880.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:33,083 INFO L168 Benchmark]: RCFGBuilder took 407.34 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 166.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:33,083 INFO L168 Benchmark]: TraceAbstraction took 14599.01 ms. Allocated memory was 201.3 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 165.9 MB in the beginning and 1.2 GB in the end (delta: -985.9 MB). Peak memory consumption was 899.4 MB. Max. memory is 8.0 GB. [2021-06-24 20:27:33,083 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 201.3 MB. Free memory is still 183.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.64 ms. Allocated memory is still 201.3 MB. Free memory was 182.0 MB in the beginning and 180.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.58 ms. Allocated memory is still 201.3 MB. Free memory was 180.3 MB in the beginning and 179.4 MB in the end (delta: 880.0 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 407.34 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 166.4 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 14599.01 ms. Allocated memory was 201.3 MB in the beginning and 1.4 GB in the end (delta: 1.2 GB). Free memory was 165.9 MB in the beginning and 1.2 GB in the end (delta: -985.9 MB). Peak memory consumption was 899.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 7942, positive: 6736, positive conditional: 6736, positive unconditional: 0, negative: 1206, negative conditional: 1206, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 7113, positive: 6736, positive conditional: 0, positive unconditional: 6736, negative: 377, negative conditional: 0, negative unconditional: 377, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 235, positive: 219, positive conditional: 0, positive unconditional: 219, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 235, positive: 201, positive conditional: 0, positive unconditional: 201, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 34, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 16, negative conditional: 0, negative unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 226, positive: 154, positive conditional: 0, positive unconditional: 154, negative: 73, negative conditional: 0, negative unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 7113, positive: 6517, positive conditional: 0, positive unconditional: 6517, negative: 361, negative conditional: 0, negative unconditional: 361, unknown: 235, unknown conditional: 0, unknown unconditional: 235] , Statistics on independence cache: Total cache size (in pairs): 235, Positive cache size: 219, Positive conditional cache size: 0, Positive unconditional cache size: 219, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Independence queries for same thread: 829 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 396027, positive: 347722, positive conditional: 347722, positive unconditional: 0, negative: 48305, negative conditional: 48305, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 370279, positive: 347722, positive conditional: 0, positive unconditional: 347722, negative: 22557, negative conditional: 0, negative unconditional: 22557, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 460, positive: 422, positive conditional: 0, positive unconditional: 422, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 460, positive: 391, positive conditional: 0, positive unconditional: 391, negative: 69, negative conditional: 0, negative unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 69, positive: 31, positive conditional: 0, positive unconditional: 31, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 164, positive: 96, positive conditional: 0, positive unconditional: 96, negative: 67, negative conditional: 0, negative unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 370279, positive: 347300, positive conditional: 0, positive unconditional: 347300, negative: 22519, negative conditional: 0, negative unconditional: 22519, unknown: 460, unknown conditional: 0, unknown unconditional: 460] , Statistics on independence cache: Total cache size (in pairs): 460, Positive cache size: 422, Positive conditional cache size: 0, Positive unconditional cache size: 422, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Independence queries for same thread: 25748 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 249030, positive: 217501, positive conditional: 217501, positive unconditional: 0, negative: 31529, negative conditional: 31529, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 231780, positive: 217501, positive conditional: 0, positive unconditional: 217501, negative: 14279, negative conditional: 0, negative unconditional: 14279, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 447, positive: 410, positive conditional: 0, positive unconditional: 410, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 447, positive: 381, positive conditional: 0, positive unconditional: 381, negative: 66, negative conditional: 0, negative unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 66, positive: 29, positive conditional: 0, positive unconditional: 29, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 132, positive: 83, positive conditional: 0, positive unconditional: 83, negative: 48, negative conditional: 0, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 231780, positive: 217091, positive conditional: 0, positive unconditional: 217091, negative: 14242, negative conditional: 0, negative unconditional: 14242, unknown: 447, unknown conditional: 0, unknown unconditional: 447] , Statistics on independence cache: Total cache size (in pairs): 447, Positive cache size: 410, Positive conditional cache size: 0, Positive unconditional cache size: 410, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Independence queries for same thread: 17250 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 291438, positive: 255283, positive conditional: 255283, positive unconditional: 0, negative: 36155, negative conditional: 36155, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 271731, positive: 255283, positive conditional: 0, positive unconditional: 255283, negative: 16448, negative conditional: 0, negative unconditional: 16448, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 459, positive: 420, positive conditional: 0, positive unconditional: 420, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 459, positive: 388, positive conditional: 0, positive unconditional: 388, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 71, positive: 32, positive conditional: 0, positive unconditional: 32, negative: 39, negative conditional: 0, negative unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 119, positive: 68, positive conditional: 0, positive unconditional: 68, negative: 51, negative conditional: 0, negative unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 271731, positive: 254863, positive conditional: 0, positive unconditional: 254863, negative: 16409, negative conditional: 0, negative unconditional: 16409, unknown: 459, unknown conditional: 0, unknown unconditional: 459] , Statistics on independence cache: Total cache size (in pairs): 459, Positive cache size: 420, Positive conditional cache size: 0, Positive unconditional cache size: 420, Negative cache size: 39, Negative conditional cache size: 0, Negative unconditional cache size: 39, Independence queries for same thread: 19707 - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 243898, positive: 212800, positive conditional: 212800, positive unconditional: 0, negative: 31098, negative conditional: 31098, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 226920, positive: 212800, positive conditional: 0, positive unconditional: 212800, negative: 14120, negative conditional: 0, negative unconditional: 14120, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 438, positive: 401, positive conditional: 0, positive unconditional: 401, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 438, positive: 374, positive conditional: 0, positive unconditional: 374, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 64, positive: 27, positive conditional: 0, positive unconditional: 27, negative: 37, negative conditional: 0, negative unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, positive: 75, positive conditional: 0, positive unconditional: 75, negative: 41, negative conditional: 0, negative unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 226920, positive: 212399, positive conditional: 0, positive unconditional: 212399, negative: 14083, negative conditional: 0, negative unconditional: 14083, unknown: 438, unknown conditional: 0, unknown unconditional: 438] , Statistics on independence cache: Total cache size (in pairs): 438, Positive cache size: 401, Positive conditional cache size: 0, Positive unconditional cache size: 401, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Independence queries for same thread: 16978 - PositiveResult [Line: 35]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 8 procedures, 53 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 575.5ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.1ms, PartialOrderReductionTime: 510.6ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork4 with 1 thread instances CFG has 8 procedures, 53 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5201.6ms, OverallIterations: 6, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.2ms, PartialOrderReductionTime: 3258.4ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.4ms SsaConstructionTime, 189.5ms SatisfiabilityAnalysisTime, 1113.6ms InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 349 ConstructedInterpolants, 0 QuantifiedInterpolants, 1831 SizeOfPredicates, 2 NumberOfNonLiveVariables, 293 ConjunctsInSsa, 183 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 378/632 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork2 with 1 thread instances CFG has 8 procedures, 53 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3268.0ms, OverallIterations: 5, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 1936.8ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 26.8ms SsaConstructionTime, 92.5ms SatisfiabilityAnalysisTime, 694.8ms InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 1515 SizeOfPredicates, 2 NumberOfNonLiveVariables, 251 ConjunctsInSsa, 153 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 270/386 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork3 with 1 thread instances CFG has 8 procedures, 53 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2851.3ms, OverallIterations: 5, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.9ms, PartialOrderReductionTime: 1705.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 16.9ms SsaConstructionTime, 48.1ms SatisfiabilityAnalysisTime, 605.9ms InterpolantComputationTime, 310 NumberOfCodeBlocks, 310 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 303 ConstructedInterpolants, 0 QuantifiedInterpolants, 1593 SizeOfPredicates, 2 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 321/480 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: DeviceThreadThread1of1ForFork1 with 1 thread instances CFG has 8 procedures, 53 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2551.0ms, OverallIterations: 5, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.9ms, PartialOrderReductionTime: 1449.9ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.3ms SsaConstructionTime, 45.5ms SatisfiabilityAnalysisTime, 545.2ms InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 271 ConstructedInterpolants, 0 QuantifiedInterpolants, 1437 SizeOfPredicates, 2 NumberOfNonLiveVariables, 237 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 236/340 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...