/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 20:31:16,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:31:16,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:31:16,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 20:31:16,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:31:16,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:31:16,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:31:16,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:31:16,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:31:16,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:31:16,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:31:16,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:31:16,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:31:16,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:31:16,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:31:16,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:31:16,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 20:31:16,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf [2021-06-24 20:31:16,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:31:16,232 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:31:16,232 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:31:16,232 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:31:16,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:31:16,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:31:16,234 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:31:16,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:31:16,234 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:31:16,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:31:16,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:31:16,234 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:31:16,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:31:16,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:31:16,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:31:16,235 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:31:16,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:31:16,235 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:31:16,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:31:16,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:31:16,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:31:16,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:31:16,236 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:31:16,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:31:16,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:31:16,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:31:16,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:31:16,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:31:16,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:31:16,237 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:31:16,237 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:31:16,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:31:16,237 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-06-24 20:31:16,237 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:31:16,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:31:16,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:31:16,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:31:16,488 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:31:16,489 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:31:16,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl [2021-06-24 20:31:16,490 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl' [2021-06-24 20:31:16,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:31:16,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:31:16,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:31:16,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:31:16,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:31:16,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:31:16,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:31:16,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:31:16,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:31:16,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/1) ... [2021-06-24 20:31:16,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:31:16,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:31:16,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:31:16,553 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:31:16,554 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (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 20:31:16,615 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:31:16,615 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:31:16,615 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:31:16,615 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:31:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:31:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:31:16,616 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:31:16,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:31:16,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:31:16,616 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 20:31:16,774 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:31:16,775 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:31:16,775 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 20:31:16,776 INFO L202 PluginConnector]: Adding new model bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:31:16 BoogieIcfgContainer [2021-06-24 20:31:16,776 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:31:16,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:31:16,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:31:16,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:31:16,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:16" (1/2) ... [2021-06-24 20:31:16,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd8f26d and model type bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:31:16, skipping insertion in model container [2021-06-24 20:31:16,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:31:16" (2/2) ... [2021-06-24 20:31:16,781 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth08.bpl [2021-06-24 20:31:16,784 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:31:16,785 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:31:16,785 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:31:16,785 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:31:16,870 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:31:16,893 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 20:31:16,947 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:31:16,947 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:31:16,947 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:31:16,947 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:31:16,947 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:31:16,948 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:31:16,948 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:31:16,948 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork8======== [2021-06-24 20:31:17,392 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:17,396 INFO L82 PathProgramCache]: Analyzing trace with hash 374923896, now seen corresponding path program 1 times [2021-06-24 20:31:17,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:17,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282186281] [2021-06-24 20:31:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:17,477 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 20:31:17,478 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:17,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282186281] [2021-06-24 20:31:17,479 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282186281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:17,479 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:17,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:31:17,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968198324] [2021-06-24 20:31:17,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:31:17,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:17,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:31:17,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:31:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:17,495 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:17,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 20:31:17,497 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:31:17,617 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:17,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:17,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1181640124, now seen corresponding path program 1 times [2021-06-24 20:31:17,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:17,618 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602717713] [2021-06-24 20:31:17,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:17,649 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-24 20:31:17,649 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:17,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602717713] [2021-06-24 20:31:17,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602717713] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:17,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:17,650 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:31:17,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075801746] [2021-06-24 20:31:17,651 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:31:17,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:17,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:31:17,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:31:17,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:17,652 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:17,652 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 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 20:31:17,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,652 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,679 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:31:17,679 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:17,679 INFO L82 PathProgramCache]: Analyzing trace with hash -830299192, now seen corresponding path program 2 times [2021-06-24 20:31:17,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:17,680 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364730141] [2021-06-24 20:31:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:17,785 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-24 20:31:17,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:17,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364730141] [2021-06-24 20:31:17,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364730141] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:17,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:17,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 20:31:17,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978581180] [2021-06-24 20:31:17,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 20:31:17,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:17,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 20:31:17,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 20:31:17,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:17,788 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:17,788 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:17,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,788 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:17,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:17,848 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 20:31:17,848 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:17,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:17,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1760056761, now seen corresponding path program 1 times [2021-06-24 20:31:17,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:17,849 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248791502] [2021-06-24 20:31:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:17,975 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-06-24 20:31:17,975 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:17,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248791502] [2021-06-24 20:31:17,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248791502] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:17,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652105021] [2021-06-24 20:31:17,976 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 20:31:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:18,026 WARN L261 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 49 conjunts are in the unsatisfiable core [2021-06-24 20:31:18,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:18,271 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-06-24 20:31:18,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652105021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:18,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:18,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-24 20:31:18,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644781680] [2021-06-24 20:31:18,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 20:31:18,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:18,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 20:31:18,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-24 20:31:18,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:18,273 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:18,273 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 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 20:31:18,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:18,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:18,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:18,273 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:18,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:18,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:18,749 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:18,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:18,749 INFO L82 PathProgramCache]: Analyzing trace with hash -971587863, now seen corresponding path program 1 times [2021-06-24 20:31:18,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:18,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812044671] [2021-06-24 20:31:18,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 110 proven. 35 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-06-24 20:31:18,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:18,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812044671] [2021-06-24 20:31:18,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812044671] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:18,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190452814] [2021-06-24 20:31:18,942 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 20:31:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:18,996 WARN L261 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 84 conjunts are in the unsatisfiable core [2021-06-24 20:31:19,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:19,212 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 12 proven. 133 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-06-24 20:31:19,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190452814] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:19,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:19,213 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:31:19,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918452223] [2021-06-24 20:31:19,214 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:31:19,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:19,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:31:19,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:31:19,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:19,216 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:19,216 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 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 20:31:19,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:19,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:19,216 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:19,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:19,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:19,937 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:19,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:19,938 INFO L82 PathProgramCache]: Analyzing trace with hash -507876175, now seen corresponding path program 1 times [2021-06-24 20:31:19,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:19,938 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101254750] [2021-06-24 20:31:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 493 proven. 237 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-06-24 20:31:20,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:20,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101254750] [2021-06-24 20:31:20,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101254750] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:20,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479220175] [2021-06-24 20:31:20,179 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 20:31:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:20,259 WARN L261 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 179 conjunts are in the unsatisfiable core [2021-06-24 20:31:20,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:20,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 25 proven. 705 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-06-24 20:31:20,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479220175] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:20,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:20,550 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:31:20,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459507748] [2021-06-24 20:31:20,551 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:31:20,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:20,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:31:20,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:31:20,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:20,552 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:20,552 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 20:31:20,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,552 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:20,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:20,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:20,553 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:22,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:22,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:22,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:22,911 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:22,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:22,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1453404691, now seen corresponding path program 1 times [2021-06-24 20:31:22,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:22,912 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131542358] [2021-06-24 20:31:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5733 backedges. 2805 proven. 1373 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2021-06-24 20:31:23,498 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:23,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131542358] [2021-06-24 20:31:23,498 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131542358] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:23,498 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486041997] [2021-06-24 20:31:23,499 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 20:31:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:23,637 WARN L261 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 434 conjunts are in the unsatisfiable core [2021-06-24 20:31:23,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5733 backedges. 59 proven. 4119 refuted. 0 times theorem prover too weak. 1555 trivial. 0 not checked. [2021-06-24 20:31:24,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486041997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:24,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:24,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-24 20:31:24,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685791317] [2021-06-24 20:31:24,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-24 20:31:24,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:24,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-24 20:31:24,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-06-24 20:31:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:24,265 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:24,265 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 7.588235294117647) internal successors, (129), 16 states have internal predecessors, (129), 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 20:31:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:34,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:34,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:31:35,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-24 20:31:35,158 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:35,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:35,158 INFO L82 PathProgramCache]: Analyzing trace with hash -690060310, now seen corresponding path program 1 times [2021-06-24 20:31:35,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:35,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534799316] [2021-06-24 20:31:35,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:35,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 43805 backedges. 22198 proven. 10587 refuted. 0 times theorem prover too weak. 11020 trivial. 0 not checked. [2021-06-24 20:31:39,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:39,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534799316] [2021-06-24 20:31:39,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534799316] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:39,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686207162] [2021-06-24 20:31:39,399 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 20:31:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:39,953 WARN L261 TraceCheckSpWp]: Trace formula consists of 1715 conjuncts, 1204 conjunts are in the unsatisfiable core [2021-06-24 20:31:39,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 43805 backedges. 162 proven. 32623 refuted. 0 times theorem prover too weak. 11020 trivial. 0 not checked. [2021-06-24 20:31:41,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686207162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:41,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:41,005 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-24 20:31:41,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701301950] [2021-06-24 20:31:41,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-24 20:31:41,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:41,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-24 20:31:41,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-06-24 20:31:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:41,006 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:41,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 9.31578947368421) internal successors, (177), 18 states have internal predecessors, (177), 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 20:31:41,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:41,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:41,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:41,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:41,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:41,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:41,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:31:41,007 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:33:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:33:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:33:19,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:33:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:33:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:33:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:33:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:33:19,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-24 20:33:20,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:33:20,189 INFO L430 AbstractCegarLoop]: === Iteration 9 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:33:20,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:33:20,190 INFO L82 PathProgramCache]: Analyzing trace with hash 28985644, now seen corresponding path program 1 times [2021-06-24 20:33:20,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:33:20,190 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961097757] [2021-06-24 20:33:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:33:22,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:34:58,692 INFO L134 CoverageAnalysis]: Checked inductivity of 364905 backedges. 185040 proven. 92437 refuted. 0 times theorem prover too weak. 87428 trivial. 0 not checked. [2021-06-24 20:34:58,692 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:34:58,692 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961097757] [2021-06-24 20:34:58,692 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961097757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:34:58,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566828685] [2021-06-24 20:34:58,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:35:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:35:02,725 WARN L261 TraceCheckSpWp]: Trace formula consists of 4907 conjuncts, 3484 conjunts are in the unsatisfiable core [2021-06-24 20:35:02,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:35:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 364905 backedges. 466 proven. 277011 refuted. 0 times theorem prover too weak. 87428 trivial. 0 not checked. [2021-06-24 20:35:05,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566828685] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:35:05,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:35:05,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-24 20:35:05,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318352183] [2021-06-24 20:35:05,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-24 20:35:05,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:35:05,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-24 20:35:05,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420 [2021-06-24 20:35:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:35:05,432 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:35:05,432 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 10.523809523809524) internal successors, (221), 20 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-24 20:35:05,432 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.