/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 21:13:15,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 21:13:15,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 21:13:15,190 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 21:13:15,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 21:13:15,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 21:13:15,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 21:13:15,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 21:13:15,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 21:13:15,201 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 21:13:15,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 21:13:15,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 21:13:15,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 21:13:15,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 21:13:15,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 21:13:15,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 21:13:15,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 21:13:15,236 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-24 21:13:15,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 21:13:15,265 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 21:13:15,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 21:13:15,266 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 21:13:15,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 21:13:15,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 21:13:15,268 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 21:13:15,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 21:13:15,268 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 21:13:15,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 21:13:15,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 21:13:15,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 21:13:15,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 21:13:15,269 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 21:13:15,269 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 21:13:15,270 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 21:13:15,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 21:13:15,270 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 21:13:15,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 21:13:15,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 21:13:15,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 21:13:15,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 21:13:15,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 21:13:15,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 21:13:15,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 21:13:15,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 21:13:15,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 21:13:15,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 21:13:15,279 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-24 21:13:15,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 21:13:15,279 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 21:13:15,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 21:13:15,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 21:13:15,280 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-24 21:13:15,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 21:13:15,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 21:13:15,555 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 21:13:15,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 21:13:15,557 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 21:13:15,558 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 21:13:15,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl [2021-06-24 21:13:15,559 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl' [2021-06-24 21:13:15,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 21:13:15,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 21:13:15,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 21:13:15,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 21:13:15,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 21:13:15,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,591 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 21:13:15,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 21:13:15,604 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 21:13:15,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 21:13:15,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/1) ... [2021-06-24 21:13:15,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 21:13:15,616 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 21:13:15,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 21:13:15,617 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 21:13:15,618 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (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 21:13:15,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 21:13:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 21:13:15,684 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 21:13:15,684 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 21:13:15,684 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 21:13:15,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 21:13:15,685 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 21:13:15,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 21:13:15,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 21:13:15,685 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 21:13:15,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 21:13:15,841 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 21:13:15,842 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 21:13:15,843 INFO L202 PluginConnector]: Adding new model bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:15 BoogieIcfgContainer [2021-06-24 21:13:15,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 21:13:15,844 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 21:13:15,844 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 21:13:15,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 21:13:15,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:15" (1/2) ... [2021-06-24 21:13:15,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@356c2122 and model type bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:13:15, skipping insertion in model container [2021-06-24 21:13:15,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:15" (2/2) ... [2021-06-24 21:13:15,848 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth08.bpl [2021-06-24 21:13:15,851 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 21:13:15,851 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 21:13:15,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 21:13:15,852 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 21:13:15,939 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 21:13:15,954 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 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 21:13:15,998 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 21:13:15,998 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 21:13:15,998 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 21:13:15,998 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 21:13:15,998 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 21:13:15,998 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 21:13:15,998 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 21:13:15,998 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork8======== [2021-06-24 21:13:16,555 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:16,563 INFO L82 PathProgramCache]: Analyzing trace with hash 364642290, now seen corresponding path program 1 times [2021-06-24 21:13:16,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:16,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122670461] [2021-06-24 21:13:16,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:16,669 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 21:13:16,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:16,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122670461] [2021-06-24 21:13:16,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122670461] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 21:13:16,671 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 21:13:16,671 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 21:13:16,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412340679] [2021-06-24 21:13:16,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 21:13:16,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:16,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 21:13:16,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 21:13:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:16,688 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:16,690 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:13:16,690 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:18,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:18,037 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 21:13:18,037 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:18,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:18,039 INFO L82 PathProgramCache]: Analyzing trace with hash 319244458, now seen corresponding path program 1 times [2021-06-24 21:13:18,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:18,040 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645025723] [2021-06-24 21:13:18,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:18,072 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 21:13:18,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:18,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645025723] [2021-06-24 21:13:18,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645025723] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 21:13:18,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 21:13:18,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 21:13:18,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498956180] [2021-06-24 21:13:18,074 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 21:13:18,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:18,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 21:13:18,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 21:13:18,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:18,077 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:18,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 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 21:13:18,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:18,077 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:18,920 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 21:13:18,920 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:18,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:18,921 INFO L82 PathProgramCache]: Analyzing trace with hash -49364598, now seen corresponding path program 1 times [2021-06-24 21:13:18,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:18,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378739640] [2021-06-24 21:13:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:19,031 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 21:13:19,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:19,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378739640] [2021-06-24 21:13:19,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378739640] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 21:13:19,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 21:13:19,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 21:13:19,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151101938] [2021-06-24 21:13:19,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 21:13:19,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:19,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 21:13:19,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 21:13:19,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:19,033 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:19,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:13:19,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:19,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:19,033 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:19,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:19,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:19,830 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 21:13:19,830 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash 220259772, now seen corresponding path program 1 times [2021-06-24 21:13:19,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:19,832 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73877358] [2021-06-24 21:13:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:19,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:19,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73877358] [2021-06-24 21:13:19,902 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73877358] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:19,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508511374] [2021-06-24 21:13:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:20,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-24 21:13:20,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:13:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:20,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508511374] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:20,167 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:13:20,167 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-06-24 21:13:20,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67920063] [2021-06-24 21:13:20,168 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 21:13:20,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:20,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 21:13:20,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 21:13:20,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:20,171 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:20,171 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:13:20,171 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:20,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:20,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:20,172 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:21,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:21,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 21:13:22,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:22,001 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:22,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1915606240, now seen corresponding path program 1 times [2021-06-24 21:13:22,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:22,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44596462] [2021-06-24 21:13:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:22,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:22,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:22,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44596462] [2021-06-24 21:13:22,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44596462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:22,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627447412] [2021-06-24 21:13:22,091 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 21:13:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:22,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-24 21:13:22,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:13:22,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:22,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627447412] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:22,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:13:22,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 21:13:22,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502398398] [2021-06-24 21:13:22,286 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 21:13:22,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:22,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 21:13:22,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 21:13:22,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:22,287 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:22,287 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 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 21:13:22,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:22,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:22,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:22,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 21:13:22,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:25,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 21:13:25,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:13:26,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:26,105 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:26,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1601265340, now seen corresponding path program 1 times [2021-06-24 21:13:26,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:26,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122726238] [2021-06-24 21:13:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 21:13:26,174 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:26,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122726238] [2021-06-24 21:13:26,174 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122726238] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:26,174 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344075142] [2021-06-24 21:13:26,175 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 21:13:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:26,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-24 21:13:26,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:13:26,318 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 21:13:26,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344075142] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:26,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:13:26,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 21:13:26,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259343526] [2021-06-24 21:13:26,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 21:13:26,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:26,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 21:13:26,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 21:13:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:26,323 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:26,323 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 14 states have internal predecessors, (87), 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 21:13:26,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:26,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:26,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:26,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 21:13:26,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:13:26,323 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 21:13:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:13:52,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 21:13:52,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:52,797 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:52,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1486522236, now seen corresponding path program 1 times [2021-06-24 21:13:52,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:52,798 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46921619] [2021-06-24 21:13:52,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-24 21:13:52,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:52,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46921619] [2021-06-24 21:13:52,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46921619] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:52,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991660252] [2021-06-24 21:13:52,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:52,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 45 conjunts are in the unsatisfiable core [2021-06-24 21:13:52,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:13:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 25 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-24 21:13:53,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991660252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:53,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:13:53,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-24 21:13:53,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850279002] [2021-06-24 21:13:53,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-24 21:13:53,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:53,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-24 21:13:53,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-06-24 21:13:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:53,162 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:53,165 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 9 states have internal predecessors, (58), 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 21:13:53,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:53,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:53,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:53,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 21:13:53,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:13:53,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 21:13:53,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:19:19,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:19:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:19:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:19:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 21:19:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:19:19,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 21:19:19,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:19:19,308 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:19:19,309 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:19:19,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:19:19,309 INFO L82 PathProgramCache]: Analyzing trace with hash -387593901, now seen corresponding path program 1 times [2021-06-24 21:19:19,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:19:19,311 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742907062] [2021-06-24 21:19:19,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:19:19,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:19:19,490 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 49 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-06-24 21:19:19,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:19:19,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742907062] [2021-06-24 21:19:19,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742907062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:19:19,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342308713] [2021-06-24 21:19:19,491 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 21:19:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:19:19,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 66 conjunts are in the unsatisfiable core [2021-06-24 21:19:19,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:19:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 49 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-06-24 21:19:19,723 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342308713] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:19:19,723 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:19:19,723 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-06-24 21:19:19,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928388014] [2021-06-24 21:19:19,724 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 21:19:19,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:19:19,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 21:19:19,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-06-24 21:19:19,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:19:19,724 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:19:19,724 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 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 21:19:19,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:19:19,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:19:19,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:19:19,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 21:19:19,724 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:19:19,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 21:19:19,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:19:19,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.