/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-DelaySleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 19:01:00,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:01:00,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:01:00,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 19:01:00,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 19:01:00,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 19:01:00,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 19:01:00,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 19:01:00,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 19:01:00,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 19:01:00,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 19:01:00,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 19:01:00,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 19:01:00,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 19:01:00,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 19:01:00,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 19:01:00,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 19:01:00,641 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-DelaySleep-NoLbe-Lockstep.epf [2021-06-24 19:01:00,668 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:01:00,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:01:00,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:01:00,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:01:00,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:01:00,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:01:00,670 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:01:00,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:01:00,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:01:00,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:01:00,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:01:00,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:01:00,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:01:00,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:01:00,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:01:00,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:01:00,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:01:00,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:01:00,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:01:00,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:01:00,672 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-24 19:01:00,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:01:00,673 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:01:00,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:01:00,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:01:00,673 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:01:00,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:01:00,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:01:01,004 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:01:01,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:01:01,007 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:01:01,007 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:01:01,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07.bpl [2021-06-24 19:01:01,008 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth07.bpl' [2021-06-24 19:01:01,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:01:01,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:01:01,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:01:01,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:01:01,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:01:01,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:01:01,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:01:01,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:01:01,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:01:01,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/1) ... [2021-06-24 19:01:01,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:01:01,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:01:01,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:01:01,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:01:01,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (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 19:01:01,132 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:01:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:01:01,132 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:01:01,132 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:01:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:01:01,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:01:01,132 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:01:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:01:01,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:01:01,133 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 19:01:01,292 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:01:01,292 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:01:01,293 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 19:01:01,294 INFO L202 PluginConnector]: Adding new model bluetooth07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:01:01 BoogieIcfgContainer [2021-06-24 19:01:01,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:01:01,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:01:01,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:01:01,298 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:01:01,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:01" (1/2) ... [2021-06-24 19:01:01,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11bf0866 and model type bluetooth07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:01:01, skipping insertion in model container [2021-06-24 19:01:01,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:01:01" (2/2) ... [2021-06-24 19:01:01,300 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth07.bpl [2021-06-24 19:01:01,304 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:01:01,304 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:01:01,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:01:01,304 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:01:01,338 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:01:01,354 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 19:01:01,449 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:01:01,450 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:01:01,450 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:01:01,450 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:01:01,450 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:01:01,450 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:01:01,450 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:01:01,450 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork6======== [2021-06-24 19:01:01,562 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:01,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:01,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1011923164, now seen corresponding path program 1 times [2021-06-24 19:01:01,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:01,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780840666] [2021-06-24 19:01:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:01,717 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 19:01:01,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:01,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780840666] [2021-06-24 19:01:01,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780840666] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:01,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:01,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:01:01,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614328423] [2021-06-24 19:01:01,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:01:01,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:01,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:01:01,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:01:01,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:01,737 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:01,739 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:01,739 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:02,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,002 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:01:02,002 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:02,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1444286883, now seen corresponding path program 1 times [2021-06-24 19:01:02,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:02,005 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210208013] [2021-06-24 19:01:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:02,039 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 19:01:02,039 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:02,040 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210208013] [2021-06-24 19:01:02,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210208013] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:02,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:02,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 19:01:02,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605563431] [2021-06-24 19:01:02,042 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:01:02,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:02,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:01:02,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:01:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:02,044 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:02,044 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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 19:01:02,044 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,044 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:01:02,179 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:02,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:02,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1988655212, now seen corresponding path program 1 times [2021-06-24 19:01:02,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:02,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969021979] [2021-06-24 19:01:02,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:02,263 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 19:01:02,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:02,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969021979] [2021-06-24 19:01:02,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969021979] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:02,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:02,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 19:01:02,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22925766] [2021-06-24 19:01:02,265 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 19:01:02,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:02,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 19:01:02,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 19:01:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:02,266 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:02,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:02,266 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:02,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 19:01:02,505 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:02,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:02,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1052242133, now seen corresponding path program 1 times [2021-06-24 19:01:02,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:02,506 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373474489] [2021-06-24 19:01:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:02,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:01:02,589 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:02,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373474489] [2021-06-24 19:01:02,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373474489] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:02,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:02,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 19:01:02,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842759744] [2021-06-24 19:01:02,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 19:01:02,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:02,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 19:01:02,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 19:01:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:02,592 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:02,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:02,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:02,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:02,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:02,916 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 19:01:02,916 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:02,917 INFO L82 PathProgramCache]: Analyzing trace with hash -58865037, now seen corresponding path program 1 times [2021-06-24 19:01:02,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:02,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177457118] [2021-06-24 19:01:02,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-24 19:01:03,034 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:03,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177457118] [2021-06-24 19:01:03,034 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177457118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:03,034 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582891109] [2021-06-24 19:01:03,034 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 19:01:03,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:03,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-24 19:01:03,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-24 19:01:03,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582891109] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:03,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:03,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 19:01:03,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213235384] [2021-06-24 19:01:03,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 19:01:03,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:03,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 19:01:03,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 19:01:03,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:03,299 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:03,299 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 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 19:01:03,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:03,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:03,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:03,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:03,299 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:04,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:04,336 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:04,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:04,337 INFO L82 PathProgramCache]: Analyzing trace with hash 249887199, now seen corresponding path program 1 times [2021-06-24 19:01:04,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:04,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702864803] [2021-06-24 19:01:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:04,403 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 19:01:04,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:04,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702864803] [2021-06-24 19:01:04,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702864803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:04,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068792534] [2021-06-24 19:01:04,404 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 19:01:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:04,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-24 19:01:04,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:04,659 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 19:01:04,660 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068792534] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:04,660 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:04,660 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 19:01:04,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778238303] [2021-06-24 19:01:04,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 19:01:04,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:04,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 19:01:04,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 19:01:04,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:04,661 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:04,661 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 14 states have internal predecessors, (82), 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 19:01:04,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:04,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:04,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:04,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:04,661 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:04,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:09,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:09,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 19:01:09,457 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:09,458 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:09,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:09,458 INFO L82 PathProgramCache]: Analyzing trace with hash 930356018, now seen corresponding path program 1 times [2021-06-24 19:01:09,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:09,458 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957092103] [2021-06-24 19:01:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-24 19:01:09,579 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:09,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957092103] [2021-06-24 19:01:09,579 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957092103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:09,579 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759208907] [2021-06-24 19:01:09,579 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 19:01:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:09,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-24 19:01:09,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:09,809 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-24 19:01:09,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759208907] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:09,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:09,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-06-24 19:01:09,810 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061670073] [2021-06-24 19:01:09,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-06-24 19:01:09,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:09,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-06-24 19:01:09,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=46, Unknown=0, NotChecked=0, Total=90 [2021-06-24 19:01:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:09,811 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:09,811 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 9 states have internal predecessors, (59), 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 19:01:09,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:09,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:09,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:09,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:09,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:09,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 19:01:09,811 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 19:01:41,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 19:01:41,941 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:41,942 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:41,942 INFO L82 PathProgramCache]: Analyzing trace with hash -235407503, now seen corresponding path program 1 times [2021-06-24 19:01:41,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:41,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810488267] [2021-06-24 19:01:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:42,190 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 75 proven. 43 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-24 19:01:42,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:42,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810488267] [2021-06-24 19:01:42,191 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810488267] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:42,191 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108230595] [2021-06-24 19:01:42,191 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 19:01:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:42,260 WARN L261 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 134 conjunts are in the unsatisfiable core [2021-06-24 19:01:42,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 3 proven. 115 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-24 19:01:42,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108230595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:42,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:42,484 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-24 19:01:42,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762253219] [2021-06-24 19:01:42,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-24 19:01:42,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:42,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-24 19:01:42,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-06-24 19:01:42,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:42,485 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:42,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 7.578947368421052) internal successors, (144), 18 states have internal predecessors, (144), 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 19:01:42,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:42,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:42,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:42,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:42,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:42,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 19:01:42,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 19:01:42,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.