/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-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 09:11:19,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 09:11:19,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 09:11:19,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 09:11:19,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 09:11:19,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 09:11:19,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 09:11:19,380 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-Persistent-NoLbe.epf [2021-07-14 09:11:19,396 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 09:11:19,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 09:11:19,397 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 09:11:19,397 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 09:11:19,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 09:11:19,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 09:11:19,398 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 09:11:19,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 09:11:19,398 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 09:11:19,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 09:11:19,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 09:11:19,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 09:11:19,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 09:11:19,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 09:11:19,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 09:11:19,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 09:11:19,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 09:11:19,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 09:11:19,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 09:11:19,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 09:11:19,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 09:11:19,400 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 09:11:19,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 09:11:19,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 09:11:19,400 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-07-14 09:11:19,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 09:11:19,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 09:11:19,675 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 09:11:19,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 09:11:19,677 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 09:11:19,678 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 09:11:19,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl [2021-07-14 09:11:19,679 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl' [2021-07-14 09:11:19,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 09:11:19,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 09:11:19,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 09:11:19,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 09:11:19,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 09:11:19,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 09:11:19,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 09:11:19,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 09:11:19,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 09:11:19,740 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... [2021-07-14 09:11:19,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 09:11:19,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 09:11:19,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 09:11:19,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 09:11:19,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 09:11:19,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-14 09:11:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-14 09:11:19,800 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-14 09:11:19,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-14 09:11:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-14 09:11:19,800 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-14 09:11:19,800 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-14 09:11:19,800 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-14 09:11:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-14 09:11:19,801 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 09:11:19,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 09:11:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 09:11:19,801 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 09:11:19,961 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 09:11:19,962 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-14 09:11:19,962 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-14 09:11:19,962 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-14 09:11:19,963 INFO L202 PluginConnector]: Adding new model bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:11:19 BoogieIcfgContainer [2021-07-14 09:11:19,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 09:11:19,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 09:11:19,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 09:11:19,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 09:11:19,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 09:11:19" (1/2) ... [2021-07-14 09:11:19,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b283eea and model type bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 09:11:19, skipping insertion in model container [2021-07-14 09:11:19,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 09:11:19" (2/2) ... [2021-07-14 09:11:19,976 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct10.bpl [2021-07-14 09:11:19,980 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 09:11:19,980 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 09:11:19,980 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 09:11:19,981 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 09:11:20,039 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-14 09:11:20,057 INFO L255 AbstractCegarLoop]: Starting to check reachability of 11 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 09:11:20,100 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 09:11:20,100 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 09:11:20,100 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 09:11:20,100 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 09:11:20,101 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 09:11:20,101 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 09:11:20,101 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 09:11:20,101 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 09:11:20,643 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-14 09:11:20,645 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 09:11:20,658 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 09:11:20,658 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 09:11:20,658 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 09:11:20,658 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 09:11:20,658 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 09:11:20,658 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 09:11:20,658 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 09:11:20,658 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-14 09:11:20,932 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:20,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:20,936 INFO L82 PathProgramCache]: Analyzing trace with hash 882416455, now seen corresponding path program 1 times [2021-07-14 09:11:20,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:20,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222920208] [2021-07-14 09:11:20,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:21,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 09:11:21,021 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:21,021 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222920208] [2021-07-14 09:11:21,022 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222920208] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:11:21,022 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:11:21,022 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-14 09:11:21,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613974117] [2021-07-14 09:11:21,026 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 09:11:21,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:21,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 09:11:21,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 09:11:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:21,036 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:21,037 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:21,037 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:21,138 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 09:11:21,138 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:21,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:21,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1580197711, now seen corresponding path program 1 times [2021-07-14 09:11:21,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:21,139 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20495819] [2021-07-14 09:11:21,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:21,162 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-07-14 09:11:21,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:21,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20495819] [2021-07-14 09:11:21,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20495819] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:11:21,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:11:21,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 09:11:21,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043223431] [2021-07-14 09:11:21,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 09:11:21,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:21,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 09:11:21,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 09:11:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:21,164 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:21,164 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:21,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:21,165 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:22,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:22,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:22,053 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 09:11:22,053 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:22,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:22,053 INFO L82 PathProgramCache]: Analyzing trace with hash -169333089, now seen corresponding path program 1 times [2021-07-14 09:11:22,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:22,054 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847749480] [2021-07-14 09:11:22,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:22,160 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-07-14 09:11:22,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:22,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847749480] [2021-07-14 09:11:22,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847749480] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 09:11:22,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 09:11:22,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 09:11:22,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785765446] [2021-07-14 09:11:22,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 09:11:22,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:22,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 09:11:22,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-14 09:11:22,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:22,163 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:22,163 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 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) [2021-07-14 09:11:22,163 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:22,163 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:22,164 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:22,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 09:11:22,524 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:22,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:22,525 INFO L82 PathProgramCache]: Analyzing trace with hash 606870947, now seen corresponding path program 1 times [2021-07-14 09:11:22,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:22,526 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091026851] [2021-07-14 09:11:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:22,804 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 51 proven. 4 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-07-14 09:11:22,804 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:22,804 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091026851] [2021-07-14 09:11:22,804 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091026851] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:22,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551641337] [2021-07-14 09:11:22,805 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 [2021-07-14 09:11:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:22,892 WARN L261 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 84 conjunts are in the unsatisfiable core [2021-07-14 09:11:22,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 14 proven. 41 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2021-07-14 09:11:23,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551641337] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:23,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:23,111 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-14 09:11:23,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789715955] [2021-07-14 09:11:23,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 09:11:23,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:23,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 09:11:23,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-14 09:11:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:23,113 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:23,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:23,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:23,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:23,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:23,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:23,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:23,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:23,511 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:23,511 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:23,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:23,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1152344107, now seen corresponding path program 1 times [2021-07-14 09:11:23,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:23,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676871569] [2021-07-14 09:11:23,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:23,713 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 197 proven. 36 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-07-14 09:11:23,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:23,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676871569] [2021-07-14 09:11:23,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676871569] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:23,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70822160] [2021-07-14 09:11:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:23,789 WARN L261 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 124 conjunts are in the unsatisfiable core [2021-07-14 09:11:23,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 19 proven. 214 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2021-07-14 09:11:24,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70822160] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:24,013 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:24,013 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-14 09:11:24,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193331961] [2021-07-14 09:11:24,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 09:11:24,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:24,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 09:11:24,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-07-14 09:11:24,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:24,014 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:24,014 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:24,015 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:24,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:24,557 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:24,557 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:24,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:24,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1690495510, now seen corresponding path program 1 times [2021-07-14 09:11:24,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:24,558 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267901872] [2021-07-14 09:11:24,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 565 proven. 121 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-07-14 09:11:24,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:24,768 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267901872] [2021-07-14 09:11:24,768 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267901872] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:24,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613774984] [2021-07-14 09:11:24,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:24,853 WARN L261 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 189 conjunts are in the unsatisfiable core [2021-07-14 09:11:24,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 26 proven. 660 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2021-07-14 09:11:25,125 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613774984] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:25,125 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:25,125 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-07-14 09:11:25,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132981520] [2021-07-14 09:11:25,126 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-14 09:11:25,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:25,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-14 09:11:25,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-07-14 09:11:25,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:25,126 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:25,127 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.733333333333333) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:25,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:25,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:25,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:25,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:25,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:25,127 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:25,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:26,113 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 09:11:26,113 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash -586790499, now seen corresponding path program 1 times [2021-07-14 09:11:26,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:26,114 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737282819] [2021-07-14 09:11:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 1546 proven. 482 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2021-07-14 09:11:26,447 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:26,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737282819] [2021-07-14 09:11:26,447 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737282819] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:26,447 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881649211] [2021-07-14 09:11:26,447 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 [2021-07-14 09:11:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:26,544 WARN L261 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 314 conjunts are in the unsatisfiable core [2021-07-14 09:11:26,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2684 backedges. 41 proven. 1987 refuted. 0 times theorem prover too weak. 656 trivial. 0 not checked. [2021-07-14 09:11:26,884 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881649211] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:26,884 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:26,884 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-07-14 09:11:26,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676718572] [2021-07-14 09:11:26,884 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 09:11:26,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:26,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 09:11:26,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-07-14 09:11:26,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:26,885 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:26,885 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 7.352941176470588) internal successors, (125), 16 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:26,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:26,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:26,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:26,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:26,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:26,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:26,885 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:29,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:29,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:11:29,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:29,409 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:29,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:29,409 INFO L82 PathProgramCache]: Analyzing trace with hash 978842486, now seen corresponding path program 1 times [2021-07-14 09:11:29,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:29,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702760072] [2021-07-14 09:11:29,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:30,298 INFO L134 CoverageAnalysis]: Checked inductivity of 8581 backedges. 4798 proven. 1906 refuted. 0 times theorem prover too weak. 1877 trivial. 0 not checked. [2021-07-14 09:11:30,298 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:30,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702760072] [2021-07-14 09:11:30,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702760072] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:30,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277472858] [2021-07-14 09:11:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:30,452 WARN L261 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 589 conjunts are in the unsatisfiable core [2021-07-14 09:11:30,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:30,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8581 backedges. 73 proven. 6631 refuted. 0 times theorem prover too weak. 1877 trivial. 0 not checked. [2021-07-14 09:11:30,983 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277472858] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:30,983 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:30,983 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-07-14 09:11:30,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041572267] [2021-07-14 09:11:30,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 09:11:30,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:30,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 09:11:30,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-07-14 09:11:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:30,985 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:30,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 7.842105263157895) internal successors, (149), 18 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:30,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:30,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:30,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:30,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:30,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:30,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:30,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:11:30,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:41,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:11:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 09:11:42,152 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:42,153 INFO L430 AbstractCegarLoop]: === Iteration 9 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:11:42,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:11:42,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1659366436, now seen corresponding path program 1 times [2021-07-14 09:11:42,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:11:42,153 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365599099] [2021-07-14 09:11:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:11:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 27914 backedges. 15152 proven. 7001 refuted. 0 times theorem prover too weak. 5761 trivial. 0 not checked. [2021-07-14 09:11:45,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:11:45,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365599099] [2021-07-14 09:11:45,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365599099] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:45,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241726230] [2021-07-14 09:11:45,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:11:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:11:45,715 WARN L261 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 1099 conjunts are in the unsatisfiable core [2021-07-14 09:11:45,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:11:46,589 INFO L134 CoverageAnalysis]: Checked inductivity of 27914 backedges. 131 proven. 22022 refuted. 0 times theorem prover too weak. 5761 trivial. 0 not checked. [2021-07-14 09:11:46,589 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241726230] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:11:46,589 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:11:46,589 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-07-14 09:11:46,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024115298] [2021-07-14 09:11:46,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-07-14 09:11:46,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:11:46,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-07-14 09:11:46,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2021-07-14 09:11:46,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:11:46,591 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:11:46,591 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 8.619047619047619) internal successors, (181), 20 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:11:46,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:46,591 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:11:46,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:11:46,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:11:46,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:11:46,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:11:46,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:11:46,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 09:11:46,592 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:12:50,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:12:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:12:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:12:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:12:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:12:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:12:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:12:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 09:12:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-07-14 09:12:50,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-14 09:12:50,285 INFO L430 AbstractCegarLoop]: === Iteration 10 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 09:12:50,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 09:12:50,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1877015289, now seen corresponding path program 1 times [2021-07-14 09:12:50,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 09:12:50,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082683796] [2021-07-14 09:12:50,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 09:12:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:13:10,345 INFO L134 CoverageAnalysis]: Checked inductivity of 104392 backedges. 55917 proven. 27792 refuted. 0 times theorem prover too weak. 20683 trivial. 0 not checked. [2021-07-14 09:13:10,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 09:13:10,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082683796] [2021-07-14 09:13:10,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082683796] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:13:10,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045191543] [2021-07-14 09:13:10,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 09:13:11,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 09:13:11,797 WARN L261 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 2164 conjunts are in the unsatisfiable core [2021-07-14 09:13:11,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 09:13:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 104392 backedges. 253 proven. 83456 refuted. 0 times theorem prover too weak. 20683 trivial. 0 not checked. [2021-07-14 09:13:13,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045191543] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 09:13:13,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 09:13:13,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-07-14 09:13:13,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246418829] [2021-07-14 09:13:13,406 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-14 09:13:13,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 09:13:13,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-14 09:13:13,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2021-07-14 09:13:13,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 09:13:13,407 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 09:13:13,408 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 9.608695652173912) internal successors, (221), 22 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-07-14 09:13:13,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.