/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepUncond-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 20:27:17,716 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:27:17,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:27:17,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 20:27:17,775 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:27:17,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:27:17,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:27:17,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:27:17,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:27:17,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:27:17,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:27:17,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:27:17,794 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:27:17,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:27:17,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:27:17,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:27:17,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 20:27:17,830 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepUncond-NoLbe.epf [2021-06-24 20:27:17,869 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:27:17,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:27:17,870 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:27:17,870 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:27:17,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:27:17,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:27:17,874 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:27:17,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:27:17,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:27:17,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:27:17,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:27:17,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:27:17,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:27:17,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:27:17,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:27:17,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:27:17,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:27:17,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:27:17,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:27:17,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:27:17,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:27:17,877 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:27:17,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:27:17,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:27:17,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:27:17,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:27:17,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:27:17,878 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:27:17,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:27:17,878 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:27:17,878 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:27:17,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:27:17,878 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-24 20:27:17,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-24 20:27:17,879 INFO L138 SettingsManager]: * Use conditional POR in concurrent analysis=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:27:18,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:27:18,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:27:18,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:27:18,184 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:27:18,185 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:27:18,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06.bpl [2021-06-24 20:27:18,186 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth06.bpl' [2021-06-24 20:27:18,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:27:18,204 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:27:18,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:27:18,205 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:27:18,205 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:27:18,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:27:18,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:27:18,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:27:18,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:27:18,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... [2021-06-24 20:27:18,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:27:18,251 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:27:18,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:27:18,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:27:18,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:27:18,306 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:27:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:27:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:27:18,307 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:27:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:27:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:27:18,307 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:27:18,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:27:18,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:27:18,308 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 20:27:18,514 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:27:18,514 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:27:18,515 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 20:27:18,516 INFO L202 PluginConnector]: Adding new model bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:27:18 BoogieIcfgContainer [2021-06-24 20:27:18,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:27:18,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:27:18,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:27:18,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:27:18,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:27:18" (1/2) ... [2021-06-24 20:27:18,521 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e053c25 and model type bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:27:18, skipping insertion in model container [2021-06-24 20:27:18,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth06.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:27:18" (2/2) ... [2021-06-24 20:27:18,522 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth06.bpl [2021-06-24 20:27:18,526 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:27:18,526 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:27:18,526 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:27:18,527 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:27:18,561 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:27:18,580 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 20:27:18,618 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:27:18,618 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:27:18,619 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:27:18,619 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:27:18,619 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:27:18,619 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:27:18,619 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:27:18,619 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork6======== [2021-06-24 20:27:18,683 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:18,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:18,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1027246442, now seen corresponding path program 1 times [2021-06-24 20:27:18,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:18,697 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853819320] [2021-06-24 20:27:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:18,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:18,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:18,845 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853819320] [2021-06-24 20:27:18,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853819320] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:18,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:18,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:27:18,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185134609] [2021-06-24 20:27:18,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:18,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:18,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:18,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:18,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:18,867 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:18,873 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:18,873 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,195 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:27:19,195 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1606196222, now seen corresponding path program 1 times [2021-06-24 20:27:19,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333864817] [2021-06-24 20:27:19,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:19,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,239 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333864817] [2021-06-24 20:27:19,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333864817] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,239 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:27:19,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168692417] [2021-06-24 20:27:19,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:27:19,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:27:19,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:27:19,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,241 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:19,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,241 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,313 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:27:19,313 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1197527606, now seen corresponding path program 1 times [2021-06-24 20:27:19,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,314 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908037060] [2021-06-24 20:27:19,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:27:19,386 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,386 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908037060] [2021-06-24 20:27:19,387 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908037060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,387 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,387 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 20:27:19,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317551009] [2021-06-24 20:27:19,387 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 20:27:19,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 20:27:19,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 20:27:19,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,388 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:19,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,388 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:19,490 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 20:27:19,490 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1203616782, now seen corresponding path program 1 times [2021-06-24 20:27:19,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065226050] [2021-06-24 20:27:19,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-24 20:27:19,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065226050] [2021-06-24 20:27:19,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065226050] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:27:19,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:27:19,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-24 20:27:19,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737421497] [2021-06-24 20:27:19,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 20:27:19,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:19,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 20:27:19,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 20:27:19,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,669 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:19,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:19,669 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,669 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:19,670 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:19,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-24 20:27:19,913 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:19,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:19,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2389890, now seen corresponding path program 1 times [2021-06-24 20:27:19,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:19,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073665654] [2021-06-24 20:27:19,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-24 20:27:19,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:19,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073665654] [2021-06-24 20:27:19,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073665654] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:19,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715513873] [2021-06-24 20:27:19,996 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 20:27:20,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:20,037 WARN L261 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 54 conjunts are in the unsatisfiable core [2021-06-24 20:27:20,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:20,230 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 2 proven. 29 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-24 20:27:20,230 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715513873] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:20,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:20,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:27:20,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659209321] [2021-06-24 20:27:20,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:27:20,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:20,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:27:20,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:27:20,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:20,232 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:20,232 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:20,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:20,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:20,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:20,232 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:21,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:21,431 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:21,431 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:21,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:21,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1219483433, now seen corresponding path program 1 times [2021-06-24 20:27:21,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:21,432 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845428640] [2021-06-24 20:27:21,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:21,715 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 168 proven. 29 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-06-24 20:27:21,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:21,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845428640] [2021-06-24 20:27:21,715 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845428640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:21,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125642337] [2021-06-24 20:27:21,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:21,774 WARN L261 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 129 conjunts are in the unsatisfiable core [2021-06-24 20:27:21,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 2 proven. 195 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-06-24 20:27:22,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125642337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:22,082 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:22,082 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:27:22,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093313708] [2021-06-24 20:27:22,082 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:27:22,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:22,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:27:22,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:27:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:22,083 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:22,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:22,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:22,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:22,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:22,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:22,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:30,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:27:30,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:30,375 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:27:30,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:27:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1274141795, now seen corresponding path program 1 times [2021-06-24 20:27:30,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:27:30,376 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065013642] [2021-06-24 20:27:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:27:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3277 backedges. 2156 proven. 140 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2021-06-24 20:27:31,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:27:31,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065013642] [2021-06-24 20:27:31,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065013642] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:31,103 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265685974] [2021-06-24 20:27:31,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:27:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:27:31,210 WARN L261 TraceCheckSpWp]: Trace formula consists of 618 conjuncts, 424 conjunts are in the unsatisfiable core [2021-06-24 20:27:31,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:27:31,854 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 19 [2021-06-24 20:27:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 3277 backedges. 2 proven. 2294 refuted. 0 times theorem prover too weak. 981 trivial. 0 not checked. [2021-06-24 20:27:32,021 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265685974] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:27:32,021 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:27:32,021 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-24 20:27:32,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608693577] [2021-06-24 20:27:32,021 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-24 20:27:32,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:27:32,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-24 20:27:32,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-06-24 20:27:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:27:32,022 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:27:32,022 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 8.058823529411764) internal successors, (137), 16 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:27:32,022 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:32,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:27:32,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:27:32,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:27:32,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:27:32,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:27:32,023 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:28:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:28:39,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:28:39,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:28:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:28:39,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:28:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:28:39,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:28:39,284 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:28:39,285 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:28:39,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:28:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash 68606271, now seen corresponding path program 1 times [2021-06-24 20:28:39,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:28:39,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316194323] [2021-06-24 20:28:39,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:28:40,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:28:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 19482 backedges. 11681 proven. 2352 refuted. 0 times theorem prover too weak. 5449 trivial. 0 not checked. [2021-06-24 20:28:42,825 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:28:42,825 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316194323] [2021-06-24 20:28:42,829 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316194323] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:28:42,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252577020] [2021-06-24 20:28:42,829 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 20:28:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:28:43,087 WARN L261 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 1034 conjunts are in the unsatisfiable core [2021-06-24 20:28:43,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:28:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 19482 backedges. 2 proven. 14031 refuted. 0 times theorem prover too weak. 5449 trivial. 0 not checked. [2021-06-24 20:28:44,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252577020] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:28:44,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:28:44,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-24 20:28:44,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873672502] [2021-06-24 20:28:44,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-24 20:28:44,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:28:44,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-24 20:28:44,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-06-24 20:28:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:28:44,310 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:28:44,310 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 9.210526315789474) internal successors, (175), 18 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:28:44,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:28:44,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:28:44,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:28:44,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 20:28:44,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:28:44,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:28:44,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:28:44,310 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.