/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-hom.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 12:16:29,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 12:16:29,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 12:16:29,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 12:16:30,024 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 [2021-07-10 12:16:30,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 12:16:30,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 12:16:30,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 12:16:30,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 12:16:30,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 12:16:30,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 12:16:30,060 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 12:16:30,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 12:16:30,060 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 12:16:30,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 12:16:30,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 12:16:30,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 12:16:30,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 12:16:30,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 12:16:30,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 12:16:30,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 12:16:30,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 12:16:30,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 12:16:30,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 12:16:30,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 12:16:30,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 12:16:30,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 12:16:30,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 12:16:30,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 12:16:30,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 12:16:30,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 12:16:30,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 12:16:30,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 12:16:30,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 12:16:30,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 12:16:30,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 12:16:30,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 12:16:30,063 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 12:16:30,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 12:16:30,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 12:16:30,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 12:16:30,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 12:16:30,392 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 12:16:30,395 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 12:16:30,396 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array-hom.wvr.bpl [2021-07-10 12:16:30,396 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-array-hom.wvr.bpl' [2021-07-10 12:16:30,424 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 12:16:30,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 12:16:30,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 12:16:30,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 12:16:30,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 12:16:30,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 12:16:30,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 12:16:30,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 12:16:30,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 12:16:30,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/1) ... [2021-07-10 12:16:30,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 12:16:30,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 12:16:30,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 12:16:30,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 12:16:30,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (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 [2021-07-10 12:16:30,547 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 12:16:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 12:16:30,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 12:16:30,547 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 12:16:30,547 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 12:16:30,547 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 12:16:30,547 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 12:16:30,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 12:16:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 12:16:30,549 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 12:16:30,549 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 12:16:30,549 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 12:16:30,550 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 12:16:30,818 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 12:16:30,818 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 12:16:30,820 INFO L202 PluginConnector]: Adding new model sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 12:16:30 BoogieIcfgContainer [2021-07-10 12:16:30,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 12:16:30,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 12:16:30,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 12:16:30,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 12:16:30,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 12:16:30" (1/2) ... [2021-07-10 12:16:30,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c6a2ac5 and model type sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 12:16:30, skipping insertion in model container [2021-07-10 12:16:30,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-array-hom.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 12:16:30" (2/2) ... [2021-07-10 12:16:30,826 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-array-hom.wvr.bpl [2021-07-10 12:16:30,831 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 12:16:30,831 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 12:16:30,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 12:16:30,831 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 12:16:30,906 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 12:16:30,924 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 [2021-07-10 12:16:30,985 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 12:16:30,986 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 12:16:30,986 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 12:16:30,986 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 12:16:30,986 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 12:16:30,986 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 12:16:30,986 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 12:16:30,986 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 12:16:31,053 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:31,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:31,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1762402312, now seen corresponding path program 1 times [2021-07-10 12:16:31,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:31,065 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072796154] [2021-07-10 12:16:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:31,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:31,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072796154] [2021-07-10 12:16:31,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072796154] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 12:16:31,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 12:16:31,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 12:16:31,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156060738] [2021-07-10 12:16:31,233 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-10 12:16:31,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:31,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-10 12:16:31,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-10 12:16:31,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:31,251 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:31,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 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) [2021-07-10 12:16:31,253 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:31,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:31,326 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 12:16:31,326 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:31,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:31,329 INFO L82 PathProgramCache]: Analyzing trace with hash -1272455018, now seen corresponding path program 1 times [2021-07-10 12:16:31,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:31,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411429215] [2021-07-10 12:16:31,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:16:31,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:31,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411429215] [2021-07-10 12:16:31,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411429215] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 12:16:31,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 12:16:31,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 12:16:31,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31452565] [2021-07-10 12:16:31,409 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 12:16:31,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:31,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 12:16:31,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 12:16:31,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:31,410 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:31,410 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) [2021-07-10 12:16:31,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:31,410 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:31,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:31,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:31,458 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-10 12:16:31,459 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:31,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:31,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1673281716, now seen corresponding path program 1 times [2021-07-10 12:16:31,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:31,460 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653404119] [2021-07-10 12:16:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:31,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:31,761 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:31,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653404119] [2021-07-10 12:16:31,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653404119] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:31,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683539472] [2021-07-10 12:16:31,762 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 [2021-07-10 12:16:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:31,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-10 12:16:31,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:16:32,098 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 12:16:32,102 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 [2021-07-10 12:16:32,104 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 12:16:32,110 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 12:16:32,113 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 12:16:32,114 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2021-07-10 12:16:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:32,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683539472] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:32,150 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:16:32,150 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 12:16:32,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134934669] [2021-07-10 12:16:32,151 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 12:16:32,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:32,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 12:16:32,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-10 12:16:32,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:32,152 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:32,152 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) [2021-07-10 12:16:32,153 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:32,153 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:32,153 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:32,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:32,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:32,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:16:32,528 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:32,529 INFO L82 PathProgramCache]: Analyzing trace with hash -811417006, now seen corresponding path program 2 times [2021-07-10 12:16:32,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:32,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038471324] [2021-07-10 12:16:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:32,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:32,583 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:32,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038471324] [2021-07-10 12:16:32,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038471324] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:32,583 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605793911] [2021-07-10 12:16:32,583 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 [2021-07-10 12:16:32,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 12:16:32,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:16:32,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 12:16:32,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:16:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:32,751 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605793911] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:32,752 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:16:32,752 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-10 12:16:32,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515224906] [2021-07-10 12:16:32,755 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 12:16:32,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:32,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 12:16:32,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-10 12:16:32,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:32,756 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:32,756 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) [2021-07-10 12:16:32,756 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:32,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:32,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:32,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:32,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:33,144 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:16:33,145 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:33,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash 186541582, now seen corresponding path program 1 times [2021-07-10 12:16:33,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:33,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337523886] [2021-07-10 12:16:33,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:16:33,214 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:33,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337523886] [2021-07-10 12:16:33,214 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337523886] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:33,214 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582176420] [2021-07-10 12:16:33,214 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 [2021-07-10 12:16:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:33,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 12:16:33,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:16:33,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:16:33,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582176420] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:33,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:16:33,396 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 12:16:33,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279917315] [2021-07-10 12:16:33,396 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 12:16:33,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:33,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 12:16:33,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-10 12:16:33,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:33,399 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:33,399 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) [2021-07-10 12:16:33,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:33,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:33,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:33,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:33,399 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:33,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:33,748 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:16:33,749 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:33,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:33,749 INFO L82 PathProgramCache]: Analyzing trace with hash 477673772, now seen corresponding path program 2 times [2021-07-10 12:16:33,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:33,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496329012] [2021-07-10 12:16:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:33,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:34,138 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:34,138 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:34,140 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496329012] [2021-07-10 12:16:34,140 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496329012] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:34,143 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45165510] [2021-07-10 12:16:34,143 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 [2021-07-10 12:16:34,198 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 12:16:34,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:16:34,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-07-10 12:16:34,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:16:34,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:34,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:34,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-10 12:16:34,558 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 27 treesize of output 15 [2021-07-10 12:16:34,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 12:16:34,563 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 12:16:34,565 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 12:16:34,565 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:5 [2021-07-10 12:16:34,591 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:34,591 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45165510] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:34,591 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:16:34,591 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-07-10 12:16:34,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80499420] [2021-07-10 12:16:34,592 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-10 12:16:34,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:34,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-10 12:16:34,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-07-10 12:16:34,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:34,593 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:34,593 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) [2021-07-10 12:16:34,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:34,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:34,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:34,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:34,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:34,593 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:35,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:16:35,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-10 12:16:35,705 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:35,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1082834122, now seen corresponding path program 3 times [2021-07-10 12:16:35,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:35,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208799330] [2021-07-10 12:16:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:35,802 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:35,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208799330] [2021-07-10 12:16:35,802 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208799330] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:35,802 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850188980] [2021-07-10 12:16:35,803 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 [2021-07-10 12:16:35,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-10 12:16:35,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:16:35,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 12:16:35,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:16:36,072 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:36,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850188980] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:36,073 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:16:36,073 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-10 12:16:36,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482144079] [2021-07-10 12:16:36,073 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-10 12:16:36,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:36,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-10 12:16:36,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-10 12:16:36,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:36,074 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:36,074 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) [2021-07-10 12:16:36,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:36,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:36,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:36,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:36,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:36,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:16:36,075 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:16:36,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:16:36,768 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:16:36,769 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:36,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:36,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2048156806, now seen corresponding path program 4 times [2021-07-10 12:16:36,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:36,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453086458] [2021-07-10 12:16:36,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:16:36,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:36,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453086458] [2021-07-10 12:16:36,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453086458] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:36,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494536035] [2021-07-10 12:16:36,866 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 [2021-07-10 12:16:36,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 12:16:36,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:16:36,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 12:16:36,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:16:37,040 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 12:16:37,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494536035] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:37,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:16:37,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-10 12:16:37,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394494991] [2021-07-10 12:16:37,041 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-10 12:16:37,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:37,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-10 12:16:37,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-10 12:16:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:37,042 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:37,042 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) [2021-07-10 12:16:37,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:37,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:37,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:37,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:37,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:37,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:16:37,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:16:37,042 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:16:37,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:16:37,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 12:16:37,476 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 12:16:37,477 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:37,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:37,477 INFO L82 PathProgramCache]: Analyzing trace with hash 561035684, now seen corresponding path program 5 times [2021-07-10 12:16:37,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:37,477 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907987368] [2021-07-10 12:16:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:37,996 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:37,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:37,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907987368] [2021-07-10 12:16:37,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907987368] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:37,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924125951] [2021-07-10 12:16:37,997 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 [2021-07-10 12:16:38,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-10 12:16:38,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:16:38,031 WARN L261 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 50 conjunts are in the unsatisfiable core [2021-07-10 12:16:38,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:16:38,861 INFO L354 Elim1Store]: treesize reduction 118, result has 2.5 percent of original size [2021-07-10 12:16:38,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 73 [2021-07-10 12:16:38,865 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 12:16:38,872 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 12:16:38,873 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 12:16:38,874 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:126, output treesize:5 [2021-07-10 12:16:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:38,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924125951] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:38,903 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 12:16:38,903 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-07-10 12:16:38,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030014675] [2021-07-10 12:16:38,903 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-10 12:16:38,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 12:16:38,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-10 12:16:38,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2021-07-10 12:16:38,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:38,904 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 12:16:38,905 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) [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-10 12:16:38,905 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 12:16:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 12:16:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 12:16:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-10 12:16:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 12:16:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 12:16:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-10 12:16:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-10 12:16:40,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-10 12:16:40,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-10 12:16:41,021 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-10 12:16:41,021 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 12:16:41,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 12:16:41,022 INFO L82 PathProgramCache]: Analyzing trace with hash -352082848, now seen corresponding path program 6 times [2021-07-10 12:16:41,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 12:16:41,022 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450473814] [2021-07-10 12:16:41,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 12:16:41,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 12:16:41,713 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 12:16:41,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 12:16:41,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450473814] [2021-07-10 12:16:41,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450473814] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 12:16:41,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000920075] [2021-07-10 12:16:41,713 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 [2021-07-10 12:16:41,753 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-10 12:16:41,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 12:16:41,754 WARN L261 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 60 conjunts are in the unsatisfiable core [2021-07-10 12:16:41,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 12:16:43,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 12:16:43,162 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-07-10 12:16:43,163 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 12:16:43,163 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 52 treesize of output 246 [2021-07-10 12:16:43,786 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 820 DAG size of output: 575 [2021-07-10 12:16:44,249 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 836 DAG size of output: 590 [2021-07-10 12:16:45,046 WARN L205 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 587 [2021-07-10 12:16:45,296 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 547 DAG size of output: 547 [2021-07-10 12:16:45,663 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 476 DAG size of output: 546 [2021-07-10 12:16:46,135 WARN L205 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 472 DAG size of output: 511 [2021-07-10 12:16:46,872 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 520 DAG size of output: 430 [2021-07-10 12:16:48,023 WARN L205 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 1619 DAG size of output: 1183 [2021-07-10 12:16:49,041 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 1840 DAG size of output: 1339 [2021-07-10 12:16:49,720 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 504 DAG size of output: 375 [2021-07-10 12:16:49,907 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 589 DAG size of output: 432 [2021-07-10 12:16:51,229 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 2145 DAG size of output: 1563 [2021-07-10 12:16:53,045 WARN L205 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 2369 DAG size of output: 1754 [2021-07-10 12:16:54,893 WARN L205 SmtUtils]: Spent 1.84 s on a formula simplification. DAG size of input: 2369 DAG size of output: 1754 [2021-07-10 12:16:56,840 WARN L205 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 2375 DAG size of output: 1760 [2021-07-10 12:16:57,030 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 451 [2021-07-10 12:16:57,486 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 525 [2021-07-10 12:16:57,902 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 449 DAG size of output: 555 [2021-07-10 12:16:58,075 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 443 [2021-07-10 12:16:58,250 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 379 [2021-07-10 12:16:59,312 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 287 [2021-07-10 12:16:59,977 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 900 DAG size of output: 770 [2021-07-10 12:17:00,338 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 1209 DAG size of output: 1030 [2021-07-10 12:17:00,905 WARN L205 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 1597 DAG size of output: 1392 [2021-07-10 12:17:01,629 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 601 DAG size of output: 577 [2021-07-10 12:17:02,522 WARN L205 SmtUtils]: Spent 887.00 ms on a formula simplification. DAG size of input: 1891 DAG size of output: 1677 [2021-07-10 12:17:03,822 WARN L205 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 2187 DAG size of output: 1937 [2021-07-10 12:17:05,520 WARN L205 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 2352 DAG size of output: 2094 [2021-07-10 12:17:07,225 WARN L205 SmtUtils]: Spent 1.69 s on a formula simplification. DAG size of input: 2352 DAG size of output: 2094 [2021-07-10 12:17:09,121 WARN L205 SmtUtils]: Spent 1.87 s on a formula simplification. DAG size of input: 2359 DAG size of output: 2101 [2021-07-10 12:17:10,362 WARN L205 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 1883 DAG size of output: 1893 [2021-07-10 12:17:10,511 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 376 [2021-07-10 12:17:11,079 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 337 [2021-07-10 12:17:11,751 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 514 DAG size of output: 483 [2021-07-10 12:17:12,294 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 729 DAG size of output: 688 [2021-07-10 12:17:12,585 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 789 DAG size of output: 748 [2021-07-10 12:17:13,270 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 366 [2021-07-10 12:17:13,979 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 590 [2021-07-10 12:17:15,637 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 892 DAG size of output: 787 [2021-07-10 12:17:16,341 WARN L205 SmtUtils]: Spent 699.00 ms on a formula simplification. DAG size of input: 1380 DAG size of output: 1254 [2021-07-10 12:17:17,545 WARN L205 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 2021 DAG size of output: 1861 [2021-07-10 12:17:18,107 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 444 DAG size of output: 354 [2021-07-10 12:17:18,346 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 411 [2021-07-10 12:17:18,531 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 411 [2021-07-10 12:17:18,876 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 516 DAG size of output: 415 [2021-07-10 12:17:20,500 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 555 [2021-07-10 12:17:20,710 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 765 DAG size of output: 742 [2021-07-10 12:17:21,060 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 940 DAG size of output: 904 [2021-07-10 12:17:21,874 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 1160 DAG size of output: 1097 [2021-07-10 12:17:24,037 WARN L205 SmtUtils]: Spent 2.16 s on a formula simplification. DAG size of input: 2857 DAG size of output: 2640 [2021-07-10 12:17:24,912 WARN L205 SmtUtils]: Spent 858.00 ms on a formula simplification. DAG size of input: 1639 DAG size of output: 1649 [2021-07-10 12:17:25,466 WARN L205 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 1362 DAG size of output: 1371 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown