/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-NewStatesSleepPersistent-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 14:21:05,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 14:21:05,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 14:21:05,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 14:21:05,534 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-NewStatesSleepPersistent-NoLbe-Lockstep.epf [2021-07-14 14:21:05,560 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 14:21:05,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 14:21:05,561 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 14:21:05,561 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 14:21:05,563 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 14:21:05,563 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 14:21:05,563 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 14:21:05,563 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 14:21:05,564 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 14:21:05,564 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 14:21:05,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 14:21:05,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 14:21:05,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 14:21:05,565 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 14:21:05,565 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 14:21:05,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 14:21:05,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 14:21:05,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 14:21:05,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 14:21:05,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 14:21:05,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 14:21:05,566 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 14:21:05,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 14:21:05,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 14:21:05,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 14:21:05,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 14:21:05,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 14:21:05,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 14:21:05,567 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 14:21:05,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 14:21:05,567 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 14:21:05,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 14:21:05,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 14:21:05,567 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-14 14:21:05,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 14:21:05,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 14:21:05,864 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 14:21:05,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 14:21:05,867 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 14:21:05,868 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 14:21:05,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl [2021-07-14 14:21:05,868 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl' [2021-07-14 14:21:05,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 14:21:05,903 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 14:21:05,903 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 14:21:05,903 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 14:21:05,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 14:21:05,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,920 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 14:21:05,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 14:21:05,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 14:21:05,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 14:21:05,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... [2021-07-14 14:21:05,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 14:21:05,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 14:21:05,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 14:21:05,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 14:21:05,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 14:21:06,001 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration [2021-07-14 14:21:06,001 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert [2021-07-14 14:21:06,002 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert [2021-07-14 14:21:06,002 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-07-14 14:21:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-07-14 14:21:06,002 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-07-14 14:21:06,002 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-07-14 14:21:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-07-14 14:21:06,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-07-14 14:21:06,002 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 14:21:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 14:21:06,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 14:21:06,003 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 14:21:06,249 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 14:21:06,249 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-07-14 14:21:06,250 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location. [2021-07-14 14:21:06,250 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-07-14 14:21:06,251 INFO L202 PluginConnector]: Adding new model bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:21:06 BoogieIcfgContainer [2021-07-14 14:21:06,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 14:21:06,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 14:21:06,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 14:21:06,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 14:21:06,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:05" (1/2) ... [2021-07-14 14:21:06,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@559b680 and model type bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:21:06, skipping insertion in model container [2021-07-14 14:21:06,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:21:06" (2/2) ... [2021-07-14 14:21:06,256 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth-correct10.bpl [2021-07-14 14:21:06,260 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 14:21:06,260 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 14:21:06,260 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 14:21:06,267 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 14:21:06,328 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-14 14:21:06,345 INFO L255 AbstractCegarLoop]: Starting to check reachability of 11 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 14:21:06,441 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 14:21:06,441 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 14:21:06,441 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 14:21:06,441 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 14:21:06,441 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 14:21:06,442 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 14:21:06,442 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 14:21:06,442 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 14:21:06,803 INFO L301 ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2) [2021-07-14 14:21:06,804 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 14:21:06,832 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 14:21:06,833 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 14:21:06,833 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 14:21:06,833 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 14:21:06,833 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 14:21:06,833 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 14:21:06,833 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 14:21:06,833 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1======== [2021-07-14 14:21:07,077 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:21:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:21:07,080 INFO L82 PathProgramCache]: Analyzing trace with hash 882416455, now seen corresponding path program 1 times [2021-07-14 14:21:07,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:21:07,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527435787] [2021-07-14 14:21:07,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:21:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:21:07,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:21:07,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527435787] [2021-07-14 14:21:07,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527435787] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 14:21:07,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 14:21:07,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-14 14:21:07,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619844799] [2021-07-14 14:21:07,167 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 14:21:07,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:21:07,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 14:21:07,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 14:21:07,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:07,177 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:21:07,178 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:21:07,178 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:07,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:07,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 14:21:07,258 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:21:07,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:21:07,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1854474538, now seen corresponding path program 1 times [2021-07-14 14:21:07,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:21:07,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063533088] [2021-07-14 14:21:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:21:07,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 14:21:07,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:21:07,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063533088] [2021-07-14 14:21:07,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063533088] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 14:21:07,350 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 14:21:07,350 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 14:21:07,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787126702] [2021-07-14 14:21:07,351 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 14:21:07,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:21:07,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 14:21:07,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 14:21:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:07,352 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:21:07,352 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:21:07,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:07,352 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:08,058 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 14:21:08,059 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:21:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:21:08,059 INFO L82 PathProgramCache]: Analyzing trace with hash 481547112, now seen corresponding path program 1 times [2021-07-14 14:21:08,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:21:08,059 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712403545] [2021-07-14 14:21:08,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:21:08,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 14:21:08,092 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:21:08,093 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712403545] [2021-07-14 14:21:08,093 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712403545] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 14:21:08,093 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 14:21:08,093 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-14 14:21:08,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474729980] [2021-07-14 14:21:08,093 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 14:21:08,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:21:08,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 14:21:08,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-07-14 14:21:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:08,094 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:21:08,094 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 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) [2021-07-14 14:21:08,094 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:08,094 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:08,094 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:09,615 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-14 14:21:09,616 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:21:09,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:21:09,616 INFO L82 PathProgramCache]: Analyzing trace with hash 472861982, now seen corresponding path program 1 times [2021-07-14 14:21:09,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:21:09,617 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933688726] [2021-07-14 14:21:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:21:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-07-14 14:21:09,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:21:09,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933688726] [2021-07-14 14:21:09,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933688726] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:09,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906347017] [2021-07-14 14:21:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:21:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:09,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-14 14:21:09,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:21:09,972 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-07-14 14:21:09,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906347017] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:09,973 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:21:09,973 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-14 14:21:09,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505666184] [2021-07-14 14:21:09,973 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 14:21:09,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:21:09,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 14:21:09,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-07-14 14:21:09,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:09,974 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:21:09,974 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:21:09,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:09,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:09,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:09,974 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:10,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:10,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 14:21:10,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:21:10,869 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:21:10,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:21:10,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1367435695, now seen corresponding path program 1 times [2021-07-14 14:21:10,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:21:10,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386540600] [2021-07-14 14:21:10,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:21:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:10,965 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-07-14 14:21:10,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:21:10,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386540600] [2021-07-14 14:21:10,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386540600] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:10,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577578604] [2021-07-14 14:21:10,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:21:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:11,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 44 conjunts are in the unsatisfiable core [2021-07-14 14:21:11,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:21:11,135 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-07-14 14:21:11,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577578604] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:11,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:21:11,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-07-14 14:21:11,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547350063] [2021-07-14 14:21:11,136 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-14 14:21:11,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:21:11,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-14 14:21:11,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-07-14 14:21:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:11,137 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:21:11,137 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:21:11,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:11,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:11,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:11,137 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 14:21:11,138 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 14:21:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:21:12,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:21:12,572 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:21:12,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:21:12,572 INFO L82 PathProgramCache]: Analyzing trace with hash 426255821, now seen corresponding path program 1 times [2021-07-14 14:21:12,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:21:12,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707594476] [2021-07-14 14:21:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:21:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-14 14:21:12,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:21:12,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707594476] [2021-07-14 14:21:12,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707594476] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:12,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970971544] [2021-07-14 14:21:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:21:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:12,733 WARN L261 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 64 conjunts are in the unsatisfiable core [2021-07-14 14:21:12,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:21:12,867 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-14 14:21:12,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970971544] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:12,868 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:21:12,868 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-07-14 14:21:12,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897791928] [2021-07-14 14:21:12,868 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-14 14:21:12,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:21:12,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-14 14:21:12,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-07-14 14:21:12,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:12,869 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:21:12,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.0) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:21:12,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:12,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:12,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:12,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 14:21:12,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:21:12,869 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 14:21:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:21:17,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:21:17,651 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 14:21:17,652 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:21:17,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:21:17,652 INFO L82 PathProgramCache]: Analyzing trace with hash -672974952, now seen corresponding path program 1 times [2021-07-14 14:21:17,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:21:17,653 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004144333] [2021-07-14 14:21:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:21:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:17,966 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 33 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-07-14 14:21:17,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:21:17,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004144333] [2021-07-14 14:21:17,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004144333] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:17,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421330585] [2021-07-14 14:21:17,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:21:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:18,017 WARN L261 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 79 conjunts are in the unsatisfiable core [2021-07-14 14:21:18,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:21:18,253 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-07-14 14:21:18,253 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421330585] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:18,253 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:21:18,254 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-07-14 14:21:18,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749689966] [2021-07-14 14:21:18,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 14:21:18,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:21:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 14:21:18,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-07-14 14:21:18,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:18,255 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:21:18,255 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.294117647058823) internal successors, (107), 16 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:21:18,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:18,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:18,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:18,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 14:21:18,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:21:18,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:21:18,255 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 14:21:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:21:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:21:53,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 14:21:54,175 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:21:54,176 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 14:21:54,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 14:21:54,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1518787450, now seen corresponding path program 1 times [2021-07-14 14:21:54,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 14:21:54,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497701098] [2021-07-14 14:21:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 14:21:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:54,306 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-14 14:21:54,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 14:21:54,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497701098] [2021-07-14 14:21:54,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497701098] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:54,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398737253] [2021-07-14 14:21:54,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 14:21:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 14:21:54,389 WARN L261 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 129 conjunts are in the unsatisfiable core [2021-07-14 14:21:54,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 14:21:54,606 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-07-14 14:21:54,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398737253] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 14:21:54,606 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 14:21:54,606 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-07-14 14:21:54,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319730022] [2021-07-14 14:21:54,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-07-14 14:21:54,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 14:21:54,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-07-14 14:21:54,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-07-14 14:21:54,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 14:21:54,608 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 14:21:54,608 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.894736842105263) internal successors, (131), 18 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 14:21:54,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:54,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 14:21:54,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 14:21:54,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 14:21:54,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 14:21:54,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 14:21:54,608 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 14:21:54,609 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.