/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-NewStatesSleepPersistentFixedOrder-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 16:53:56,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 16:53:56,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 16:53:56,127 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 16:53:56,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 16:53:56,151 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 16:53:56,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 16:53:56,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 16:53:56,153 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 16:53:56,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 16:53:56,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 16:53:56,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 16:53:56,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 16:53:56,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 16:53:56,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 16:53:56,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 16:53:56,160 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 16:53:56,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 16:53:56,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 16:53:56,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 16:53:56,331 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-NewStatesSleepPersistentFixedOrder-NoLbe.epf [2021-07-14 16:53:56,347 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 16:53:56,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 16:53:56,348 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 16:53:56,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 16:53:56,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 16:53:56,349 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 16:53:56,349 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 16:53:56,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 16:53:56,349 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 16:53:56,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 16:53:56,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 16:53:56,350 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 16:53:56,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 16:53:56,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 16:53:56,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 16:53:56,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 16:53:56,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 16:53:56,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 16:53:56,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 16:53:56,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 16:53:56,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 16:53:56,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 16:53:56,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 16:53:56,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 16:53:56,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 16:53:56,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 16:53:56,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 16:53:56,351 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 16:53:56,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 16:53:56,352 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 16:53:56,352 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 16:53:56,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 16:53:56,352 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-14 16:53:56,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 16:53:56,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 16:53:56,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 16:53:56,624 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 16:53:56,625 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 16:53:56,628 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 16:53:56,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array.wvr.bpl [2021-07-14 16:53:56,629 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array.wvr.bpl' [2021-07-14 16:53:56,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 16:53:56,660 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 16:53:56,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 16:53:56,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 16:53:56,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 16:53:56,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 16:53:56,686 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 16:53:56,686 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 16:53:56,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 16:53:56,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... [2021-07-14 16:53:56,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 16:53:56,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 16:53:56,698 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 16:53:56,698 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 16:53:56,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 16:53:56,791 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 16:53:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 16:53:56,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 16:53:56,792 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 16:53:56,792 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 16:53:56,792 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 16:53:56,793 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 16:53:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 16:53:56,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 16:53:56,794 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 16:53:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 16:53:56,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 16:53:56,795 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 16:53:56,966 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 16:53:56,966 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 16:53:56,968 INFO L202 PluginConnector]: Adding new model sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:53:56 BoogieIcfgContainer [2021-07-14 16:53:56,968 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 16:53:56,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 16:53:56,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 16:53:56,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 16:53:56,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:53:56" (1/2) ... [2021-07-14 16:53:56,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5faf0e5c and model type sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 04:53:56, skipping insertion in model container [2021-07-14 16:53:56,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:53:56" (2/2) ... [2021-07-14 16:53:56,973 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-array.wvr.bpl [2021-07-14 16:53:56,976 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 16:53:56,976 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 16:53:56,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 16:53:56,977 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 16:53:57,033 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 16:53:57,048 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 16:53:57,170 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 16:53:57,171 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 16:53:57,171 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 16:53:57,171 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 16:53:57,171 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 16:53:57,171 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 16:53:57,171 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 16:53:57,171 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 16:53:57,292 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:53:57,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:53:57,295 INFO L82 PathProgramCache]: Analyzing trace with hash -2048413527, now seen corresponding path program 1 times [2021-07-14 16:53:57,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:53:57,306 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077804745] [2021-07-14 16:53:57,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:53:57,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:53:57,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:53:57,450 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:53:57,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077804745] [2021-07-14 16:53:57,452 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077804745] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 16:53:57,452 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 16:53:57,452 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 16:53:57,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204056942] [2021-07-14 16:53:57,455 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 16:53:57,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:53:57,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 16:53:57,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 16:53:57,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:57,470 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:53:57,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 16:53:57,472 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:57,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:57,501 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 16:53:57,501 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:53:57,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:53:57,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1251079929, now seen corresponding path program 1 times [2021-07-14 16:53:57,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:53:57,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014928779] [2021-07-14 16:53:57,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:53:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:53:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 16:53:57,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:53:57,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014928779] [2021-07-14 16:53:57,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014928779] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 16:53:57,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 16:53:57,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 16:53:57,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903329035] [2021-07-14 16:53:57,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 16:53:57,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:53:57,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 16:53:57,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 16:53:57,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:57,574 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:53:57,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 16:53:57,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:57,574 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:53:57,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 16:53:57,629 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:53:57,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:53:57,629 INFO L82 PathProgramCache]: Analyzing trace with hash 740151525, now seen corresponding path program 1 times [2021-07-14 16:53:57,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:53:57,630 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383837956] [2021-07-14 16:53:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:53:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:53:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:53:57,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:53:57,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383837956] [2021-07-14 16:53:57,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383837956] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:53:57,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886033823] [2021-07-14 16:53:57,943 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 [2021-07-14 16:53:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:53:58,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-14 16:53:58,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:53:58,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 16:53:58,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-14 16:53:58,214 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 16:53:58,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 16:53:58,220 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 16:53:58,220 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:3 [2021-07-14 16:53:58,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:53:58,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886033823] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:53:58,242 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:53:58,242 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 16:53:58,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722882054] [2021-07-14 16:53:58,242 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 16:53:58,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:53:58,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 16:53:58,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-14 16:53:58,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:58,243 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:53:58,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 16:53:58,243 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:58,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:53:58,244 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:58,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:53:58,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:53:58,559 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:53:58,559 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:53:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:53:58,559 INFO L82 PathProgramCache]: Analyzing trace with hash 98880067, now seen corresponding path program 2 times [2021-07-14 16:53:58,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:53:58,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325816388] [2021-07-14 16:53:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:53:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:53:58,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:53:58,605 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:53:58,605 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325816388] [2021-07-14 16:53:58,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325816388] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:53:58,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701842944] [2021-07-14 16:53:58,606 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 [2021-07-14 16:53:58,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 16:53:58,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:53:58,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 16:53:58,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:53:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:53:58,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701842944] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:53:58,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:53:58,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 16:53:58,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854256859] [2021-07-14 16:53:58,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 16:53:58,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:53:58,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 16:53:58,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-14 16:53:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:58,722 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:53:58,722 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 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) [2021-07-14 16:53:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:58,722 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:53:58,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:53:58,723 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:53:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:53:58,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:53:59,096 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:53:59,098 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:53:59,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:53:59,099 INFO L82 PathProgramCache]: Analyzing trace with hash -832533121, now seen corresponding path program 1 times [2021-07-14 16:53:59,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:53:59,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957571886] [2021-07-14 16:53:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:53:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:53:59,145 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 16:53:59,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:53:59,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957571886] [2021-07-14 16:53:59,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957571886] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:53:59,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090379399] [2021-07-14 16:53:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:53:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:53:59,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 16:53:59,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:53:59,255 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 16:53:59,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090379399] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:53:59,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:53:59,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 16:53:59,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183990358] [2021-07-14 16:53:59,256 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 16:53:59,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:53:59,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 16:53:59,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 16:53:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:59,257 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:53:59,257 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 16:53:59,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:59,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:53:59,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:53:59,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:53:59,257 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:53:59,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:53:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:53:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:53:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:53:59,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:53:59,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:53:59,560 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:53:59,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:53:59,560 INFO L82 PathProgramCache]: Analyzing trace with hash 399673437, now seen corresponding path program 2 times [2021-07-14 16:53:59,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:53:59,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218510105] [2021-07-14 16:53:59,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:53:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:53:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:53:59,874 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:53:59,876 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218510105] [2021-07-14 16:53:59,876 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218510105] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:53:59,877 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895673579] [2021-07-14 16:53:59,877 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:53:59,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 16:53:59,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:53:59,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 32 conjunts are in the unsatisfiable core [2021-07-14 16:53:59,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:54:00,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:00,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:00,170 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 16:54:00,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-07-14 16:54:00,172 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 16:54:00,175 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 16:54:00,176 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 16:54:00,176 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:3 [2021-07-14 16:54:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:54:00,195 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895673579] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:54:00,195 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:54:00,195 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-07-14 16:54:00,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850758322] [2021-07-14 16:54:00,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-14 16:54:00,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:54:00,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-14 16:54:00,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2021-07-14 16:54:00,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:54:00,196 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:54:00,196 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 16:54:00,196 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:54:00,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:54:00,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:54:00,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:54:00,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:54:00,197 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:54:00,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:54:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:54:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:54:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:54:00,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:54:00,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:54:01,153 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 16:54:01,154 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:54:01,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:54:01,154 INFO L82 PathProgramCache]: Analyzing trace with hash -860798021, now seen corresponding path program 3 times [2021-07-14 16:54:01,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:54:01,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897505796] [2021-07-14 16:54:01,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:54:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:54:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:54:01,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:54:01,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897505796] [2021-07-14 16:54:01,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897505796] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:54:01,245 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663931680] [2021-07-14 16:54:01,245 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:54:01,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 16:54:01,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:54:01,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 16:54:01,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:54:01,481 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:54:01,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663931680] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:54:01,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:54:01,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-14 16:54:01,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908066920] [2021-07-14 16:54:01,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-14 16:54:01,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:54:01,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-14 16:54:01,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-14 16:54:01,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:54:01,483 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:54:01,483 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 16:54:01,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:54:01,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:54:01,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:54:01,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:54:01,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:54:01,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:54:01,483 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:54:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:54:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:54:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:54:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:54:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:54:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:54:01,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:54:02,025 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:54:02,025 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:54:02,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:54:02,026 INFO L82 PathProgramCache]: Analyzing trace with hash -18642185, now seen corresponding path program 4 times [2021-07-14 16:54:02,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:54:02,026 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357218190] [2021-07-14 16:54:02,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:54:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:54:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 16:54:02,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:54:02,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357218190] [2021-07-14 16:54:02,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357218190] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:54:02,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480779995] [2021-07-14 16:54:02,118 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:54:02,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 16:54:02,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:54:02,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 16:54:02,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:54:02,266 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 16:54:02,267 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480779995] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:54:02,267 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:54:02,267 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-14 16:54:02,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635518366] [2021-07-14 16:54:02,267 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 16:54:02,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:54:02,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 16:54:02,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-14 16:54:02,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:54:02,268 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:54:02,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 16:54:02,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:54:02,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:54:02,268 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:54:02,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:54:02,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:54:02,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:54:02,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:54:02,269 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:54:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:54:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:54:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:54:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:54:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:54:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:54:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:54:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 16:54:02,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:54:02,636 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:54:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:54:02,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1357658155, now seen corresponding path program 5 times [2021-07-14 16:54:02,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:54:02,637 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786596526] [2021-07-14 16:54:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:54:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:54:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:54:03,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:54:03,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786596526] [2021-07-14 16:54:03,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786596526] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:54:03,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776153157] [2021-07-14 16:54:03,072 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:54:03,115 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 16:54:03,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:54:03,116 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-14 16:54:03,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:54:03,676 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 16:54:03,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:03,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:03,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:03,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:03,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2021-07-14 16:54:03,680 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 16:54:03,685 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 16:54:03,687 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 16:54:03,687 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:48, output treesize:3 [2021-07-14 16:54:03,709 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:54:03,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776153157] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:54:03,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 16:54:03,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-07-14 16:54:03,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598179209] [2021-07-14 16:54:03,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-14 16:54:03,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 16:54:03,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-14 16:54:03,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2021-07-14 16:54:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:54:03,711 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 16:54:03,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 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) [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 16:54:03,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 16:54:05,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 16:54:05,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-14 16:54:05,469 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 16:54:05,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 16:54:05,470 INFO L82 PathProgramCache]: Analyzing trace with hash -986074607, now seen corresponding path program 6 times [2021-07-14 16:54:05,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 16:54:05,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052613443] [2021-07-14 16:54:05,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 16:54:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 16:54:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 16:54:06,068 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 16:54:06,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052613443] [2021-07-14 16:54:06,068 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052613443] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 16:54:06,068 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282704065] [2021-07-14 16:54:06,068 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 16:54:06,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-14 16:54:06,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 16:54:06,109 WARN L261 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 58 conjunts are in the unsatisfiable core [2021-07-14 16:54:06,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 16:54:07,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 16:54:07,240 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-07-14 16:54:07,241 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 16:54:07,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 49 treesize of output 243 [2021-07-14 16:54:07,796 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 807 DAG size of output: 589 [2021-07-14 16:54:08,107 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 819 DAG size of output: 599 [2021-07-14 16:54:08,679 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 553 DAG size of output: 629 [2021-07-14 16:54:08,919 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 547 DAG size of output: 547 [2021-07-14 16:54:09,089 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 491 DAG size of output: 491 [2021-07-14 16:54:09,202 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 437 DAG size of output: 437 [2021-07-14 16:54:10,251 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 602 DAG size of output: 526 [2021-07-14 16:54:10,437 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 826 DAG size of output: 694 [2021-07-14 16:54:10,689 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 1062 DAG size of output: 867 [2021-07-14 16:54:11,226 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 1267 DAG size of output: 1013 [2021-07-14 16:54:12,053 WARN L205 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 1468 DAG size of output: 1162 [2021-07-14 16:54:13,141 WARN L205 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 1652 DAG size of output: 1304 [2021-07-14 16:54:14,255 WARN L205 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 1921 DAG size of output: 1533 [2021-07-14 16:54:15,412 WARN L205 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 1921 DAG size of output: 1533 [2021-07-14 16:54:16,658 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 1927 DAG size of output: 1539 [2021-07-14 16:54:19,326 WARN L205 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 1428 DAG size of output: 1780 [2021-07-14 16:54:19,564 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 334 DAG size of output: 377 [2021-07-14 16:54:19,755 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 331 DAG size of output: 377 [2021-07-14 16:54:20,586 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 858 DAG size of output: 826 [2021-07-14 16:54:21,330 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 1181 DAG size of output: 1131 [2021-07-14 16:54:21,874 WARN L205 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 1336 DAG size of output: 1277 [2021-07-14 16:54:22,542 WARN L205 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 1529 DAG size of output: 1465 [2021-07-14 16:54:23,232 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 749 DAG size of output: 709 [2021-07-14 16:54:25,106 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 471 DAG size of output: 580 [2021-07-14 16:54:25,305 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 465 DAG size of output: 465 [2021-07-14 16:54:25,633 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 415 DAG size of output: 469 [2021-07-14 16:54:26,983 WARN L205 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 1714 DAG size of output: 1500 [2021-07-14 16:54:27,692 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 706 DAG size of output: 683 [2021-07-14 16:54:27,909 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 716 DAG size of output: 693 [2021-07-14 16:54:28,863 WARN L205 SmtUtils]: Spent 948.00 ms on a formula simplification. DAG size of input: 2114 DAG size of output: 1876 [2021-07-14 16:54:30,252 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 2378 DAG size of output: 2090 [2021-07-14 16:54:36,395 WARN L205 SmtUtils]: Spent 6.11 s on a formula simplification. DAG size of input: 6712 DAG size of output: 6019 [2021-07-14 16:54:42,561 WARN L205 SmtUtils]: Spent 6.13 s on a formula simplification. DAG size of input: 6712 DAG size of output: 6019 [2021-07-14 16:54:48,985 WARN L205 SmtUtils]: Spent 6.37 s on a formula simplification. DAG size of input: 6715 DAG size of output: 6022 [2021-07-14 16:55:01,737 WARN L205 SmtUtils]: Spent 12.69 s on a formula simplification. DAG size of input: 5797 DAG size of output: 7117 [2021-07-14 16:55:02,649 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 621 DAG size of output: 522 [2021-07-14 16:55:03,292 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 761 DAG size of output: 698 [2021-07-14 16:55:03,451 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 290 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown