/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 19:01:03,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 19:01:03,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 19:01:03,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 19:01:03,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Lockstep.epf [2021-06-24 19:01:03,865 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 19:01:03,865 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 19:01:03,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 19:01:03,866 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 19:01:03,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 19:01:03,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 19:01:03,868 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 19:01:03,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 19:01:03,868 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 19:01:03,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 19:01:03,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 19:01:03,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 19:01:03,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 19:01:03,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 19:01:03,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 19:01:03,869 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 19:01:03,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 19:01:03,870 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 19:01:03,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 19:01:03,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 19:01:03,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 19:01:03,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 19:01:03,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 19:01:03,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:01:03,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 19:01:03,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-24 19:01:03,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 19:01:04,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 19:01:04,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 19:01:04,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 19:01:04,139 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 19:01:04,141 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 19:01:04,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl [2021-06-24 19:01:04,141 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth08.bpl' [2021-06-24 19:01:04,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 19:01:04,164 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 19:01:04,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 19:01:04,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 19:01:04,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 19:01:04,172 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 07:01:04" (1/1) ... [2021-06-24 19:01:04,177 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 07:01:04" (1/1) ... [2021-06-24 19:01:04,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 19:01:04,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 19:01:04,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 19:01:04,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 19:01:04,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/1) ... [2021-06-24 19:01:04,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/1) ... [2021-06-24 19:01:04,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/1) ... [2021-06-24 19:01:04,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/1) ... [2021-06-24 19:01:04,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/1) ... [2021-06-24 19:01:04,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/1) ... [2021-06-24 19:01:04,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/1) ... [2021-06-24 19:01:04,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 19:01:04,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 19:01:04,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 19:01:04,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 19:01:04,197 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 19:01:04,265 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 19:01:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 19:01:04,266 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 19:01:04,266 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 19:01:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 19:01:04,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 19:01:04,266 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 19:01:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 19:01:04,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 19:01:04,267 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 19:01:04,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 19:01:04,417 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 19:01:04,418 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 19:01:04,419 INFO L202 PluginConnector]: Adding new model bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:01:04 BoogieIcfgContainer [2021-06-24 19:01:04,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 19:01:04,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 19:01:04,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 19:01:04,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 19:01:04,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 07:01:04" (1/2) ... [2021-06-24 19:01:04,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7910f703 and model type bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 07:01:04, skipping insertion in model container [2021-06-24 19:01:04,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 07:01:04" (2/2) ... [2021-06-24 19:01:04,424 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth08.bpl [2021-06-24 19:01:04,427 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 19:01:04,427 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 19:01:04,428 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 19:01:04,428 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 19:01:04,483 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 19:01:04,499 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 19:01:04,608 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 19:01:04,608 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 19:01:04,608 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 19:01:04,608 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 19:01:04,608 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 19:01:04,608 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 19:01:04,609 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 19:01:04,609 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork8======== [2021-06-24 19:01:04,707 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:04,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:04,713 INFO L82 PathProgramCache]: Analyzing trace with hash 364642290, now seen corresponding path program 1 times [2021-06-24 19:01:04,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:04,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825679060] [2021-06-24 19:01:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:01:04,834 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:04,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825679060] [2021-06-24 19:01:04,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825679060] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:04,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:04,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 19:01:04,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819861302] [2021-06-24 19:01:04,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:01:04,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:04,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:01:04,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:01:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:04,861 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:04,863 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:04,863 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:05,366 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 19:01:05,366 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:05,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:05,369 INFO L82 PathProgramCache]: Analyzing trace with hash 319244458, now seen corresponding path program 1 times [2021-06-24 19:01:05,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:05,369 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062844177] [2021-06-24 19:01:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:05,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:01:05,402 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:05,402 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062844177] [2021-06-24 19:01:05,402 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062844177] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:05,402 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:05,402 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 19:01:05,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195324428] [2021-06-24 19:01:05,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 19:01:05,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:05,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 19:01:05,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 19:01:05,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:05,407 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:05,407 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:05,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:05,407 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:05,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:05,602 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 19:01:05,602 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:05,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:05,602 INFO L82 PathProgramCache]: Analyzing trace with hash -49364598, now seen corresponding path program 1 times [2021-06-24 19:01:05,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:05,603 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90051067] [2021-06-24 19:01:05,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:01:05,663 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:05,664 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90051067] [2021-06-24 19:01:05,664 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90051067] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 19:01:05,664 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 19:01:05,664 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 19:01:05,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918800625] [2021-06-24 19:01:05,665 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 19:01:05,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:05,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 19:01:05,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 19:01:05,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:05,667 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:05,667 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:05,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:05,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:05,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:05,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:05,975 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 19:01:05,976 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:05,976 INFO L82 PathProgramCache]: Analyzing trace with hash 220259772, now seen corresponding path program 1 times [2021-06-24 19:01:05,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:05,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803360121] [2021-06-24 19:01:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:01:06,056 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:06,056 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803360121] [2021-06-24 19:01:06,057 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803360121] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:06,057 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307263290] [2021-06-24 19:01:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:06,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-24 19:01:06,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:01:06,288 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307263290] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:06,288 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:06,288 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-06-24 19:01:06,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632185514] [2021-06-24 19:01:06,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-24 19:01:06,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:06,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-24 19:01:06,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-06-24 19:01:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:06,292 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:06,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:06,292 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:06,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:06,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:06,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:06,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:06,904 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:06,905 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:06,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:06,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1915606240, now seen corresponding path program 1 times [2021-06-24 19:01:06,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:06,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058150370] [2021-06-24 19:01:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:01:07,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:07,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058150370] [2021-06-24 19:01:07,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058150370] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:07,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107096464] [2021-06-24 19:01:07,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:07,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 29 conjunts are in the unsatisfiable core [2021-06-24 19:01:07,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:07,185 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 19:01:07,185 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107096464] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:07,185 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:07,185 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 19:01:07,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483492432] [2021-06-24 19:01:07,186 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 19:01:07,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:07,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 19:01:07,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 19:01:07,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:07,187 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:07,187 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.769230769230769) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:07,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:07,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:07,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:07,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:07,187 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:08,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:08,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:08,359 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:08,363 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:08,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:08,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1601265340, now seen corresponding path program 1 times [2021-06-24 19:01:08,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:08,364 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002517945] [2021-06-24 19:01:08,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:01:08,475 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:08,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002517945] [2021-06-24 19:01:08,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002517945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:08,475 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635191611] [2021-06-24 19:01:08,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:08,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 39 conjunts are in the unsatisfiable core [2021-06-24 19:01:08,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:08,728 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-24 19:01:08,729 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635191611] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:08,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:08,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 19:01:08,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168702091] [2021-06-24 19:01:08,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 19:01:08,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:08,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 19:01:08,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 19:01:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:08,733 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:08,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.8) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:08,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:08,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:08,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:08,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:08,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:08,733 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:13,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:13,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 19:01:13,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:13,531 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:13,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1760104720, now seen corresponding path program 1 times [2021-06-24 19:01:13,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:13,531 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175379976] [2021-06-24 19:01:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:13,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-24 19:01:13,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:13,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175379976] [2021-06-24 19:01:13,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175379976] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:13,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784602953] [2021-06-24 19:01:13,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:13,725 WARN L261 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 79 conjunts are in the unsatisfiable core [2021-06-24 19:01:13,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-06-24 19:01:13,925 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784602953] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:13,925 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:13,925 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-24 19:01:13,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473040882] [2021-06-24 19:01:13,925 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-24 19:01:13,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:13,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-24 19:01:13,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-06-24 19:01:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:13,926 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:13,926 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 16 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:13,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:13,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:13,926 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:13,927 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:13,927 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:13,927 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 19:01:13,927 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:43,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 19:01:43,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 19:01:44,069 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 19:01:44,069 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 19:01:44,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 19:01:44,070 INFO L82 PathProgramCache]: Analyzing trace with hash -746315725, now seen corresponding path program 1 times [2021-06-24 19:01:44,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 19:01:44,071 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523956533] [2021-06-24 19:01:44,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 19:01:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:44,252 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-06-24 19:01:44,252 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 19:01:44,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523956533] [2021-06-24 19:01:44,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523956533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:44,252 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38517836] [2021-06-24 19:01:44,252 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 19:01:44,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 19:01:44,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 81 conjunts are in the unsatisfiable core [2021-06-24 19:01:44,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 19:01:44,544 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 76 proven. 44 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-06-24 19:01:44,544 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38517836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 19:01:44,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 19:01:44,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-06-24 19:01:44,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473223295] [2021-06-24 19:01:44,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 19:01:44,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 19:01:44,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 19:01:44,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110 [2021-06-24 19:01:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 19:01:44,545 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 19:01:44,545 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 10 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 19:01:44,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:44,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 19:01:44,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 19:01:44,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-24 19:01:44,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 19:01:44,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 19:01:44,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-24 19:01:44,546 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.