/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth09.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-d310483fe8b4879eee5de19363f50e4b839cc4ec-d310483 [2021-06-24 20:31:17,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-24 20:31:17,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-24 20:31:17,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-24 20:31:17,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-24 20:31:17,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-24 20:31:17,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-24 20:31:17,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-24 20:31:17,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-24 20:31:17,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-24 20:31:17,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-24 20:31:17,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-24 20:31:17,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-24 20:31:17,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-24 20:31:17,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-24 20:31:17,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-24 20:31:17,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-24 20:31:17,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-Persistent-NoLbe.epf [2021-06-24 20:31:17,776 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-24 20:31:17,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-24 20:31:17,776 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-24 20:31:17,776 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-24 20:31:17,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-24 20:31:17,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-24 20:31:17,777 INFO L138 SettingsManager]: * Use SBE=true [2021-06-24 20:31:17,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-24 20:31:17,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-24 20:31:17,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-24 20:31:17,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:31:17,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-24 20:31:17,779 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-24 20:31:17,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-24 20:31:17,780 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS [2021-06-24 20:31:17,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-24 20:31:18,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-24 20:31:18,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-24 20:31:18,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-24 20:31:18,025 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-24 20:31:18,026 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-24 20:31:18,027 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth09.bpl [2021-06-24 20:31:18,027 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth09.bpl' [2021-06-24 20:31:18,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-24 20:31:18,044 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-24 20:31:18,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-24 20:31:18,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-24 20:31:18,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-24 20:31:18,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,060 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-24 20:31:18,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-24 20:31:18,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-24 20:31:18,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-24 20:31:18,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... [2021-06-24 20:31:18,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-24 20:31:18,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-24 20:31:18,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-24 20:31:18,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-24 20:31:18,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-24 20:31:18,131 INFO L124 BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration [2021-06-24 20:31:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure DeviceThread [2021-06-24 20:31:18,131 INFO L138 BoogieDeclarations]: Found implementation of procedure DeviceThread [2021-06-24 20:31:18,131 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration [2021-06-24 20:31:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure ServerThread [2021-06-24 20:31:18,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ServerThread [2021-06-24 20:31:18,131 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-24 20:31:18,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-24 20:31:18,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-24 20:31:18,132 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-24 20:31:18,323 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-24 20:31:18,323 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-06-24 20:31:18,323 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location. [2021-06-24 20:31:18,325 INFO L202 PluginConnector]: Adding new model bluetooth09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:31:18 BoogieIcfgContainer [2021-06-24 20:31:18,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-24 20:31:18,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-24 20:31:18,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-24 20:31:18,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-24 20:31:18,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 24.06 08:31:18" (1/2) ... [2021-06-24 20:31:18,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@552c03db and model type bluetooth09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.06 08:31:18, skipping insertion in model container [2021-06-24 20:31:18,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.06 08:31:18" (2/2) ... [2021-06-24 20:31:18,330 INFO L111 eAbstractionObserver]: Analyzing ICFG bluetooth09.bpl [2021-06-24 20:31:18,333 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-24 20:31:18,333 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-24 20:31:18,333 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-24 20:31:18,334 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-24 20:31:18,373 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-24 20:31:18,389 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-24 20:31:18,426 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-24 20:31:18,426 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-24 20:31:18,426 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-24 20:31:18,426 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-24 20:31:18,426 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-24 20:31:18,426 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-24 20:31:18,426 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-24 20:31:18,427 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadThread1of1ForFork8======== [2021-06-24 20:31:19,016 INFO L430 AbstractCegarLoop]: === Iteration 1 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:19,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:19,020 INFO L82 PathProgramCache]: Analyzing trace with hash 806628926, now seen corresponding path program 1 times [2021-06-24 20:31:19,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:19,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137268292] [2021-06-24 20:31:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:19,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-24 20:31:19,101 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:19,101 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137268292] [2021-06-24 20:31:19,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137268292] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:19,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:19,103 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-24 20:31:19,103 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476811768] [2021-06-24 20:31:19,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:31:19,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:19,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:31:19,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:31:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:19,118 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:19,120 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:19,120 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-24 20:31:19,247 INFO L430 AbstractCegarLoop]: === Iteration 2 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:19,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:19,249 INFO L82 PathProgramCache]: Analyzing trace with hash 187681957, now seen corresponding path program 1 times [2021-06-24 20:31:19,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:19,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334879056] [2021-06-24 20:31:19,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:19,315 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-06-24 20:31:19,315 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:19,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334879056] [2021-06-24 20:31:19,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334879056] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:19,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:19,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-24 20:31:19,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063646401] [2021-06-24 20:31:19,317 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-24 20:31:19,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:19,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-24 20:31:19,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-24 20:31:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:19,319 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:19,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:19,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,320 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:19,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-24 20:31:19,381 INFO L430 AbstractCegarLoop]: === Iteration 3 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:19,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:19,381 INFO L82 PathProgramCache]: Analyzing trace with hash -620328951, now seen corresponding path program 1 times [2021-06-24 20:31:19,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:19,382 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255449716] [2021-06-24 20:31:19,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:19,506 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-06-24 20:31:19,506 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:19,506 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255449716] [2021-06-24 20:31:19,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255449716] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-24 20:31:19,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-24 20:31:19,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-24 20:31:19,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073724080] [2021-06-24 20:31:19,507 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-24 20:31:19,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:19,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-24 20:31:19,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-06-24 20:31:19,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:19,509 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:19,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:19,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,509 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:19,638 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-24 20:31:19,639 INFO L430 AbstractCegarLoop]: === Iteration 4 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:19,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:19,639 INFO L82 PathProgramCache]: Analyzing trace with hash 951284488, now seen corresponding path program 1 times [2021-06-24 20:31:19,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:19,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698826247] [2021-06-24 20:31:19,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:19,760 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-06-24 20:31:19,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:19,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698826247] [2021-06-24 20:31:19,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698826247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:19,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856924113] [2021-06-24 20:31:19,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:19,829 WARN L261 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 59 conjunts are in the unsatisfiable core [2021-06-24 20:31:19,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:20,077 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 39 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-06-24 20:31:20,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856924113] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:20,078 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:20,078 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-24 20:31:20,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677552302] [2021-06-24 20:31:20,078 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-24 20:31:20,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:20,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-24 20:31:20,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-24 20:31:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:20,079 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:20,079 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 10 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:20,079 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:20,080 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:20,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:20,517 INFO L430 AbstractCegarLoop]: === Iteration 5 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:20,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1324929812, now seen corresponding path program 1 times [2021-06-24 20:31:20,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:20,518 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782469695] [2021-06-24 20:31:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:20,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 120 proven. 43 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-06-24 20:31:20,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:20,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782469695] [2021-06-24 20:31:20,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782469695] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:20,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710433827] [2021-06-24 20:31:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:20,671 WARN L261 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 89 conjunts are in the unsatisfiable core [2021-06-24 20:31:20,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:20,874 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 13 proven. 150 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2021-06-24 20:31:20,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710433827] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:20,875 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:20,875 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-24 20:31:20,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40294439] [2021-06-24 20:31:20,875 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-24 20:31:20,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:20,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-24 20:31:20,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-06-24 20:31:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:20,876 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:20,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:20,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:20,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:20,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:20,876 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:21,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:21,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:21,723 INFO L430 AbstractCegarLoop]: === Iteration 6 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1710179552, now seen corresponding path program 1 times [2021-06-24 20:31:21,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:21,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714802912] [2021-06-24 20:31:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 585 proven. 249 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-06-24 20:31:21,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:21,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714802912] [2021-06-24 20:31:21,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714802912] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:21,957 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454885836] [2021-06-24 20:31:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:22,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:22,030 WARN L261 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 189 conjunts are in the unsatisfiable core [2021-06-24 20:31:22,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:22,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1164 backedges. 27 proven. 807 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-06-24 20:31:22,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454885836] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:22,321 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:22,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-06-24 20:31:22,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882763466] [2021-06-24 20:31:22,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-24 20:31:22,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:22,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-24 20:31:22,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-06-24 20:31:22,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:22,323 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:22,324 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 7.0) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:22,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:22,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:22,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:22,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:22,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:22,324 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:25,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:25,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:25,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:25,473 INFO L430 AbstractCegarLoop]: === Iteration 7 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:25,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:25,473 INFO L82 PathProgramCache]: Analyzing trace with hash -774010474, now seen corresponding path program 1 times [2021-06-24 20:31:25,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:25,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055584570] [2021-06-24 20:31:25,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:26,114 INFO L134 CoverageAnalysis]: Checked inductivity of 6669 backedges. 3400 proven. 1491 refuted. 0 times theorem prover too weak. 1778 trivial. 0 not checked. [2021-06-24 20:31:26,115 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:26,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055584570] [2021-06-24 20:31:26,115 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055584570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:26,115 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489026936] [2021-06-24 20:31:26,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:26,250 WARN L261 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 469 conjunts are in the unsatisfiable core [2021-06-24 20:31:26,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:26,815 INFO L134 CoverageAnalysis]: Checked inductivity of 6669 backedges. 64 proven. 4827 refuted. 0 times theorem prover too weak. 1778 trivial. 0 not checked. [2021-06-24 20:31:26,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489026936] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:26,816 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:26,816 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-06-24 20:31:26,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314124121] [2021-06-24 20:31:26,816 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-24 20:31:26,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:26,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-24 20:31:26,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272 [2021-06-24 20:31:26,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:26,817 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:26,817 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 8.411764705882353) internal successors, (143), 16 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:26,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:26,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:26,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:26,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:26,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:26,817 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:26,818 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:45,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:31:45,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-24 20:31:45,485 INFO L430 AbstractCegarLoop]: === Iteration 8 === [DeviceThreadErr0ASSERT_VIOLATIONASSERT]=== [2021-06-24 20:31:45,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-24 20:31:45,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1497870325, now seen corresponding path program 1 times [2021-06-24 20:31:45,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-24 20:31:45,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942253360] [2021-06-24 20:31:45,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-24 20:31:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 50452 backedges. 25396 proven. 12176 refuted. 0 times theorem prover too weak. 12880 trivial. 0 not checked. [2021-06-24 20:31:50,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-24 20:31:50,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942253360] [2021-06-24 20:31:50,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942253360] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:50,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421589031] [2021-06-24 20:31:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-24 20:31:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-24 20:31:51,149 WARN L261 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 1299 conjunts are in the unsatisfiable core [2021-06-24 20:31:51,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-24 20:31:52,293 INFO L134 CoverageAnalysis]: Checked inductivity of 50452 backedges. 175 proven. 37397 refuted. 0 times theorem prover too weak. 12880 trivial. 0 not checked. [2021-06-24 20:31:52,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421589031] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-24 20:31:52,293 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-24 20:31:52,293 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-24 20:31:52,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639746258] [2021-06-24 20:31:52,294 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-24 20:31:52,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-24 20:31:52,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-24 20:31:52,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-06-24 20:31:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-24 20:31:52,294 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-24 20:31:52,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 9.526315789473685) internal successors, (181), 18 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-24 20:31:52,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:52,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-24 20:31:52,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-24 20:31:52,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-24 20:31:52,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-24 20:31:52,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-24 20:31:52,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-24 20:31:52,295 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.