/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 17:31:10,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 17:31:10,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 17:31:10,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 17:31:10,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 17:31:10,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 17:31:10,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 17:31:10,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 17:31:10,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 17:31:10,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 17:31:10,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 17:31:10,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 17:31:10,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 17:31:10,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 17:31:10,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 17:31:10,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 17:31:10,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-06 17:31:10,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random42.epf [2021-06-06 17:31:10,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 17:31:10,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 17:31:10,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 17:31:10,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 17:31:10,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 17:31:10,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 17:31:10,824 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 17:31:10,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 17:31:10,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 17:31:10,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 17:31:10,825 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 17:31:10,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 17:31:10,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 17:31:10,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 17:31:10,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 17:31:10,826 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 17:31:10,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 17:31:10,826 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 17:31:10,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 17:31:10,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 17:31:10,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 17:31:10,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 17:31:10,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 17:31:10,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 17:31:10,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 17:31:10,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 17:31:10,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 17:31:10,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 17:31:10,828 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 17:31:10,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 17:31:10,828 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 17:31:10,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 17:31:10,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 17:31:10,829 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 17:31:10,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 17:31:10,829 INFO L138 SettingsManager]: * Random seed used by POR DFS order=42 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 17:31:11,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 17:31:11,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 17:31:11,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 17:31:11,161 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 17:31:11,162 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 17:31:11,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl [2021-06-06 17:31:11,163 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl' [2021-06-06 17:31:11,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 17:31:11,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 17:31:11,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 17:31:11,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 17:31:11,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 17:31:11,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 17:31:11,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 17:31:11,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 17:31:11,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 17:31:11,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,241 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/1) ... [2021-06-06 17:31:11,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 17:31:11,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 17:31:11,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 17:31:11,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 17:31:11,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (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 [2021-06-06 17:31:11,323 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 17:31:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 17:31:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 17:31:11,324 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 17:31:11,324 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 17:31:11,324 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 17:31:11,324 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 17:31:11,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 17:31:11,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 17:31:11,325 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 17:31:11,515 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 17:31:11,515 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 17:31:11,516 INFO L202 PluginConnector]: Adding new model nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 05:31:11 BoogieIcfgContainer [2021-06-06 17:31:11,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 17:31:11,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 17:31:11,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 17:31:11,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 17:31:11,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 05:31:11" (1/2) ... [2021-06-06 17:31:11,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6762ca78 and model type nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 05:31:11, skipping insertion in model container [2021-06-06 17:31:11,522 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 05:31:11" (2/2) ... [2021-06-06 17:31:11,523 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-counter-alt2.wvr.bpl [2021-06-06 17:31:11,528 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 17:31:11,528 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 17:31:11,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 17:31:11,541 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 17:31:11,590 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-06 17:31:11,628 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 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 [2021-06-06 17:31:11,715 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 17:31:11,716 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 17:31:11,716 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 17:31:11,716 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 17:31:11,716 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 17:31:11,716 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 17:31:11,716 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 17:31:11,716 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 17:31:11,754 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 17:31:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 17:31:11,763 INFO L82 PathProgramCache]: Analyzing trace with hash -164187069, now seen corresponding path program 1 times [2021-06-06 17:31:11,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 17:31:11,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342321047] [2021-06-06 17:31:11,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 17:31:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 17:31:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 17:31:11,932 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 17:31:11,932 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342321047] [2021-06-06 17:31:11,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342321047] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 17:31:11,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 17:31:11,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-06 17:31:11,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498088220] [2021-06-06 17:31:11,937 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 17:31:11,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 17:31:11,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 17:31:11,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 17:31:11,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:11,957 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 17:31:11,962 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-06-06 17:31:11,963 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:12,064 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 17:31:12,064 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 17:31:12,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 17:31:12,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1642661567, now seen corresponding path program 1 times [2021-06-06 17:31:12,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 17:31:12,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751286030] [2021-06-06 17:31:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 17:31:12,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 17:31:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 17:31:12,157 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 17:31:12,157 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751286030] [2021-06-06 17:31:12,158 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751286030] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:12,158 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364252669] [2021-06-06 17:31:12,158 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 [2021-06-06 17:31:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 17:31:12,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-06 17:31:12,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 17:31:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 17:31:12,385 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364252669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:12,385 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 17:31:12,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-06 17:31:12,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528335134] [2021-06-06 17:31:12,388 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-06 17:31:12,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 17:31:12,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-06 17:31:12,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-06-06 17:31:12,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:12,390 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 17:31:12,391 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 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) [2021-06-06 17:31:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:12,391 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:12,680 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 17:31:12,681 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 17:31:12,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 17:31:12,682 INFO L82 PathProgramCache]: Analyzing trace with hash -524669891, now seen corresponding path program 2 times [2021-06-06 17:31:12,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 17:31:12,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98035382] [2021-06-06 17:31:12,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 17:31:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 17:31:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 17:31:12,790 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 17:31:12,790 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98035382] [2021-06-06 17:31:12,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98035382] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:12,791 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089646822] [2021-06-06 17:31:12,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2021-06-06 17:31:12,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-06 17:31:12,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 17:31:12,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-06 17:31:12,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 17:31:13,078 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 17:31:13,078 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089646822] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:13,079 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 17:31:13,079 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 17 [2021-06-06 17:31:13,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164548154] [2021-06-06 17:31:13,079 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 17:31:13,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 17:31:13,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 17:31:13,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-06-06 17:31:13,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:13,083 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 17:31:13,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 17 states have internal predecessors, (37), 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) [2021-06-06 17:31:13,084 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:13,085 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:13,085 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:13,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:13,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 17:31:13,572 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 17:31:13,573 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 17:31:13,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 17:31:13,573 INFO L82 PathProgramCache]: Analyzing trace with hash -174302533, now seen corresponding path program 3 times [2021-06-06 17:31:13,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 17:31:13,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429128518] [2021-06-06 17:31:13,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 17:31:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 17:31:13,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 17:31:13,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 17:31:13,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429128518] [2021-06-06 17:31:13,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429128518] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:13,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135376610] [2021-06-06 17:31:13,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2021-06-06 17:31:13,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-06 17:31:13,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 17:31:13,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-06 17:31:13,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 17:31:14,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 17:31:14,086 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135376610] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:14,086 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 17:31:14,086 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2021-06-06 17:31:14,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033542567] [2021-06-06 17:31:14,087 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-06 17:31:14,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 17:31:14,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-06 17:31:14,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-06-06 17:31:14,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:14,088 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 17:31:14,088 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 17 states have internal predecessors, (39), 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) [2021-06-06 17:31:14,088 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:14,088 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:14,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 17:31:14,089 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 17:31:14,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 17:31:14,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 17:31:14,889 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 17:31:14,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 17:31:14,889 INFO L82 PathProgramCache]: Analyzing trace with hash -507178321, now seen corresponding path program 4 times [2021-06-06 17:31:14,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 17:31:14,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074875252] [2021-06-06 17:31:14,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 17:31:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 17:31:15,050 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-06 17:31:15,050 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 17:31:15,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074875252] [2021-06-06 17:31:15,051 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074875252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:15,051 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722814506] [2021-06-06 17:31:15,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST 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 [2021-06-06 17:31:15,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-06 17:31:15,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 17:31:15,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-06 17:31:15,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 17:31:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 48 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-06-06 17:31:15,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [722814506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:15,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 17:31:15,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2021-06-06 17:31:15,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425436636] [2021-06-06 17:31:15,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-06-06 17:31:15,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 17:31:15,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-06-06 17:31:15,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-06-06 17:31:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:15,729 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 17:31:15,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 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) [2021-06-06 17:31:15,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:15,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:15,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 17:31:15,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-06 17:31:15,730 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 17:31:16,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 17:31:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 17:31:17,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 17:31:17,003 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 17:31:17,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 17:31:17,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1234250153, now seen corresponding path program 5 times [2021-06-06 17:31:17,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 17:31:17,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384728342] [2021-06-06 17:31:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 17:31:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 17:31:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 17 proven. 72 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-06-06 17:31:17,377 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 17:31:17,377 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384728342] [2021-06-06 17:31:17,378 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384728342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:17,378 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423668570] [2021-06-06 17:31:17,378 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 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 [2021-06-06 17:31:17,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-06 17:31:17,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 17:31:17,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-06 17:31:17,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-06 17:31:17,788 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 46 proven. 50 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-06 17:31:17,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423668570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:17,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-06 17:31:17,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-06-06 17:31:17,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271674677] [2021-06-06 17:31:17,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-06-06 17:31:17,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 17:31:17,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-06-06 17:31:17,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2021-06-06 17:31:17,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:17,790 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 17:31:17,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 27 states have internal predecessors, (68), 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) [2021-06-06 17:31:17,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:17,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:17,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-06 17:31:17,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-06 17:31:17,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 30 states. [2021-06-06 17:31:17,791 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 17:31:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 17:31:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-06 17:31:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-06 17:31:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-06 17:31:19,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-06 17:31:19,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-06-06 17:31:19,216 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-06-06 17:31:19,217 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 17:31:19,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 17:31:19,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1231426187, now seen corresponding path program 6 times [2021-06-06 17:31:19,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 17:31:19,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469701283] [2021-06-06 17:31:19,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 17:31:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 17:31:19,614 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-06 17:31:19,614 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 17:31:19,614 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469701283] [2021-06-06 17:31:19,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469701283] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 17:31:19,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816677805] [2021-06-06 17:31:19,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 17:31:19,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-06 17:31:19,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-06 17:31:19,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 30 conjunts are in the unsatisfiable core [2021-06-06 17:31:19,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown