/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 21:13:17,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 21:13:17,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 21:13:17,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 21:13:17,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 21:13:17,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 21:13:17,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 21:13:17,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 21:13:17,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 21:13:17,534 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 21:13:17,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 21:13:17,540 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 21:13:17,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 21:13:17,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 21:13:17,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 21:13:17,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 21:13:17,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 21:13:17,556 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-24 21:13:17,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 21:13:17,585 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 21:13:17,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 21:13:17,586 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 21:13:17,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 21:13:17,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 21:13:17,588 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 21:13:17,588 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 21:13:17,588 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 21:13:17,588 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 21:13:17,589 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 21:13:17,589 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 21:13:17,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 21:13:17,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 21:13:17,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 21:13:17,589 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 21:13:17,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 21:13:17,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 21:13:17,590 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 21:13:17,590 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 21:13:17,591 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-24 21:13:17,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 21:13:17,591 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 21:13:17,591 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 21:13:17,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 21:13:17,591 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-24 21:13:17,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 21:13:17,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 21:13:17,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 21:13:17,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 21:13:17,881 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 21:13:17,882 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 21:13:17,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth10.bpl [2021-06-24 21:13:17,883 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth10.bpl' [2021-06-24 21:13:17,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 21:13:17,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 21:13:17,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 21:13:17,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 21:13:17,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 21:13:17,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,942 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 21:13:17,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 21:13:17,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 21:13:17,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 21:13:17,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... [2021-06-24 21:13:17,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 21:13:17,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 21:13:17,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 21:13:17,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 21:13:17,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 21:13:18,019 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 21:13:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 21:13:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 21:13:18,019 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 21:13:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 21:13:18,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 21:13:18,019 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 21:13:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 21:13:18,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 21:13:18,020 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 21:13:18,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 21:13:18,179 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 21:13:18,180 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 21:13:18,181 INFO L202 PluginConnector]: Adding new model bluetooth10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:18 BoogieIcfgContainer [2021-06-24 21:13:18,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 21:13:18,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 21:13:18,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 21:13:18,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 21:13:18,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 09:13:17" (1/2) ... [2021-06-24 21:13:18,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@511f61c5 and model type bluetooth10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 09:13:18, skipping insertion in model container [2021-06-24 21:13:18,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 09:13:18" (2/2) ... [2021-06-24 21:13:18,187 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth10.bpl [2021-06-24 21:13:18,191 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 21:13:18,192 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 21:13:18,192 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 21:13:18,192 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 21:13:18,237 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 21:13:18,254 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 21:13:18,340 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 21:13:18,340 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 21:13:18,340 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 21:13:18,340 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 21:13:18,340 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 21:13:18,341 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 21:13:18,341 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 21:13:18,341 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork8======== [2021-06-24 21:13:19,076 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:19,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:19,082 INFO L82 PathProgramCache]: Analyzing trace with hash 315409317, now seen corresponding path program 1 times [2021-06-24 21:13:19,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:19,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802876014] [2021-06-24 21:13:19,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:19,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:19,191 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:19,192 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802876014] [2021-06-24 21:13:19,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802876014] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 21:13:19,193 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 21:13:19,193 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 21:13:19,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295760083] [2021-06-24 21:13:19,196 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 21:13:19,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:19,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 21:13:19,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 21:13:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:19,212 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:19,214 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:13:19,214 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:22,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:22,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 21:13:22,624 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:22,625 INFO L82 PathProgramCache]: Analyzing trace with hash -191187527, now seen corresponding path program 1 times [2021-06-24 21:13:22,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:22,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22166827] [2021-06-24 21:13:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:22,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:22,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22166827] [2021-06-24 21:13:22,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22166827] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 21:13:22,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 21:13:22,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 21:13:22,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216182907] [2021-06-24 21:13:22,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 21:13:22,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:22,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 21:13:22,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 21:13:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:22,642 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:22,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:13:22,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:22,642 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:25,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:25,176 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 21:13:25,176 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:25,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1385129894, now seen corresponding path program 1 times [2021-06-24 21:13:25,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:25,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880108496] [2021-06-24 21:13:25,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:25,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:25,258 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:25,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880108496] [2021-06-24 21:13:25,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880108496] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 21:13:25,259 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 21:13:25,259 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 21:13:25,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160884771] [2021-06-24 21:13:25,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 21:13:25,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:25,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 21:13:25,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 21:13:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:25,262 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:25,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 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 21:13:25,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:25,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:25,262 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:27,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:27,577 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 21:13:27,577 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:27,577 INFO L82 PathProgramCache]: Analyzing trace with hash -35095303, now seen corresponding path program 1 times [2021-06-24 21:13:27,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:27,577 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530233185] [2021-06-24 21:13:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:27,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:27,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:27,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530233185] [2021-06-24 21:13:27,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530233185] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:27,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35743059] [2021-06-24 21:13:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:27,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2021-06-24 21:13:27,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:13:27,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 21:13:27,955 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35743059] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:27,955 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:13:27,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-24 21:13:27,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034501370] [2021-06-24 21:13:27,955 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 21:13:27,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 21:13:27,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-24 21:13:27,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:27,956 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:27,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:13:27,956 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:27,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:27,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:27,957 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:31,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:13:31,844 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:31,847 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:31,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:31,847 INFO L82 PathProgramCache]: Analyzing trace with hash -496622522, now seen corresponding path program 1 times [2021-06-24 21:13:31,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:31,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491180845] [2021-06-24 21:13:31,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 21:13:31,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:31,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491180845] [2021-06-24 21:13:31,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491180845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:31,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832215958] [2021-06-24 21:13:31,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:31,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-24 21:13:31,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:13:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 21:13:32,095 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832215958] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:32,095 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:13:32,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 21:13:32,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019686130] [2021-06-24 21:13:32,096 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 21:13:32,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:32,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 21:13:32,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 21:13:32,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:32,098 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:32,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:13:32,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:32,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:32,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:32,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:13:32,098 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:13:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:13:37,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:37,199 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:13:37,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:13:37,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2108219476, now seen corresponding path program 1 times [2021-06-24 21:13:37,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:13:37,199 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848350199] [2021-06-24 21:13:37,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:13:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-24 21:13:37,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:13:37,284 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848350199] [2021-06-24 21:13:37,284 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848350199] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:37,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123867901] [2021-06-24 21:13:37,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:13:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:13:37,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-24 21:13:37,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:13:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-24 21:13:37,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123867901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:13:37,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:13:37,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 21:13:37,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901657795] [2021-06-24 21:13:37,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 21:13:37,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:13:37,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 21:13:37,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 21:13:37,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:13:37,461 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:13:37,462 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.666666666666667) internal successors, (85), 14 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:13:37,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:37,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:13:37,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:13:37,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:13:37,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:13:37,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:14:07,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:14:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:14:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:14:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:14:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:14:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 21:14:07,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:14:07,317 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:14:07,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:14:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1737734434, now seen corresponding path program 1 times [2021-06-24 21:14:07,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:14:07,318 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249404953] [2021-06-24 21:14:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:14:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:14:07,396 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 21:14:07,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:14:07,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249404953] [2021-06-24 21:14:07,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249404953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:14:07,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217592954] [2021-06-24 21:14:07,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:14:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:14:07,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 44 conjunts are in the unsatisfiable core [2021-06-24 21:14:07,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:14:07,589 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 21:14:07,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217592954] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:14:07,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:14:07,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-24 21:14:07,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184828701] [2021-06-24 21:14:07,591 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-24 21:14:07,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:14:07,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-24 21:14:07,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-06-24 21:14:07,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:14:07,592 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:14:07,592 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 16 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:14:07,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:14:07,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:14:07,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:14:07,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:14:07,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:14:07,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 21:14:07,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:19:46,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:19:47,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:19:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:19:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:19:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:19:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 21:19:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 21:19:47,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-24 21:19:47,264 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 21:19:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 21:19:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash 452073871, now seen corresponding path program 1 times [2021-06-24 21:19:47,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 21:19:47,265 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86089632] [2021-06-24 21:19:47,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 21:19:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:19:47,406 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 33 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-24 21:19:47,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 21:19:47,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86089632] [2021-06-24 21:19:47,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86089632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:19:47,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938170103] [2021-06-24 21:19:47,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 21:19:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 21:19:47,449 WARN L261 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 94 conjunts are in the unsatisfiable core [2021-06-24 21:19:47,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 21:19:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 3 proven. 49 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-24 21:19:47,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938170103] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 21:19:47,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 21:19:47,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-24 21:19:47,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391651260] [2021-06-24 21:19:47,676 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-24 21:19:47,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 21:19:47,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-24 21:19:47,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-06-24 21:19:47,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 21:19:47,677 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 21:19:47,677 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 18 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 21:19:47,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:19:47,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 21:19:47,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 21:19:47,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 21:19:47,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 21:19:47,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 21:19:47,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-24 21:19:47,677 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.