/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-Sleep-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-12 10:08:52,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-12 10:08:52,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-12 10:08:52,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-12 10:08:52,587 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-Sleep-NoLbe-Delay.epf [2021-03-12 10:08:52,622 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-12 10:08:52,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-12 10:08:52,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-12 10:08:52,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-12 10:08:52,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-12 10:08:52,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-12 10:08:52,625 INFO L138 SettingsManager]: * Use SBE=true [2021-03-12 10:08:52,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-12 10:08:52,625 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-12 10:08:52,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-12 10:08:52,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-12 10:08:52,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-12 10:08:52,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-12 10:08:52,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-12 10:08:52,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-12 10:08:52,626 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-12 10:08:52,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-12 10:08:52,626 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-12 10:08:52,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-12 10:08:52,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-12 10:08:52,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-12 10:08:52,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-12 10:08:52,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-12 10:08:52,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-12 10:08:52,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-12 10:08:52,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-12 10:08:52,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-12 10:08:52,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-12 10:08:52,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-12 10:08:52,628 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-12 10:08:52,628 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-03-12 10:08:52,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-12 10:08:52,628 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-03-12 10:08:52,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-12 10:08:52,954 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-12 10:08:52,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-12 10:08:52,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-12 10:08:52,981 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-03-12 10:08:52,982 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-03-12 10:08:52,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl [2021-03-12 10:08:52,984 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq-array.wvr.bpl' [2021-03-12 10:08:53,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-12 10:08:53,049 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-03-12 10:08:53,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-12 10:08:53,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-12 10:08:53,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-12 10:08:53,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,068 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-12 10:08:53,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-12 10:08:53,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-12 10:08:53,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-12 10:08:53,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/1) ... [2021-03-12 10:08:53,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-12 10:08:53,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-12 10:08:53,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-12 10:08:53,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-12 10:08:53,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (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 [2021-03-12 10:08:53,150 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-03-12 10:08:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-03-12 10:08:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-03-12 10:08:53,150 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-03-12 10:08:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-03-12 10:08:53,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-03-12 10:08:53,151 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-03-12 10:08:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-12 10:08:53,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-12 10:08:53,152 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-12 10:08:53,345 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-12 10:08:53,345 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-03-12 10:08:53,365 INFO L202 PluginConnector]: Adding new model dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 10:08:53 BoogieIcfgContainer [2021-03-12 10:08:53,365 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-12 10:08:53,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-12 10:08:53,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-12 10:08:53,369 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-12 10:08:53,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 10:08:53" (1/2) ... [2021-03-12 10:08:53,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265b57d4 and model type dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 10:08:53, skipping insertion in model container [2021-03-12 10:08:53,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 10:08:53" (2/2) ... [2021-03-12 10:08:53,371 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq-array.wvr.bpl [2021-03-12 10:08:53,376 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-12 10:08:53,376 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-12 10:08:53,391 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-12 10:08:53,392 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-12 10:08:53,433 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-03-12 10:08:53,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-03-12 10:08:53,491 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-12 10:08:53,491 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-12 10:08:53,492 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-12 10:08:53,492 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-12 10:08:53,492 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-12 10:08:53,492 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-12 10:08:53,492 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-12 10:08:53,492 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-12 10:08:53,577 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:53,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:53,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1116390347, now seen corresponding path program 1 times [2021-03-12 10:08:53,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:53,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141023628] [2021-03-12 10:08:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:53,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:53,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:08:53,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141023628] [2021-03-12 10:08:53,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 10:08:53,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 10:08:53,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065128466] [2021-03-12 10:08:53,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 10:08:53,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:08:53,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 10:08:53,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 10:08:53,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:53,723 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:08:53,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-03-12 10:08:53,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-12 10:08:53,784 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:53,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1484219061, now seen corresponding path program 1 times [2021-03-12 10:08:53,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:53,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350247368] [2021-03-12 10:08:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 10:08:53,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350247368] [2021-03-12 10:08:53,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 10:08:53,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-12 10:08:53,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397133222] [2021-03-12 10:08:53,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 10:08:53,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:08:53,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 10:08:53,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 10:08:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:53,837 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:08:53,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 2 states have internal predecessors, (21), 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) [2021-03-12 10:08:53,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,837 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,870 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-12 10:08:53,870 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:53,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1675419287, now seen corresponding path program 2 times [2021-03-12 10:08:53,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:53,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565235309] [2021-03-12 10:08:53,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-03-12 10:08:53,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565235309] [2021-03-12 10:08:53,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-12 10:08:53,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-12 10:08:53,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629041402] [2021-03-12 10:08:53,924 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-12 10:08:53,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:08:53,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-12 10:08:53,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-12 10:08:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:53,928 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:08:53,928 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-03-12 10:08:53,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,928 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:53,957 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-12 10:08:53,957 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:53,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:53,958 INFO L82 PathProgramCache]: Analyzing trace with hash 1507447386, now seen corresponding path program 1 times [2021-03-12 10:08:53,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:53,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184781922] [2021-03-12 10:08:53,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:53,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:08:54,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184781922] [2021-03-12 10:08:54,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684597959] [2021-03-12 10:08:54,139 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 [2021-03-12 10:08:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:54,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-03-12 10:08:54,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:08:54,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-03-12 10:08:54,362 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:08:54,367 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:08:54,370 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:08:54,370 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:7 [2021-03-12 10:08:54,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-03-12 10:08:54,429 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:08:54,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:08:54,433 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:08:54,433 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2021-03-12 10:08:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:08:54,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:08:54,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 11 [2021-03-12 10:08:54,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449495218] [2021-03-12 10:08:54,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-03-12 10:08:54,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:08:54,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-03-12 10:08:54,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-03-12 10:08:54,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:54,454 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:08:54,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 11 states have internal predecessors, (31), 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) [2021-03-12 10:08:54,454 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:54,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:54,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:54,455 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:54,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:54,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:54,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:08:54,807 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:54,807 INFO L82 PathProgramCache]: Analyzing trace with hash 392188772, now seen corresponding path program 1 times [2021-03-12 10:08:54,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:54,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784582458] [2021-03-12 10:08:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:54,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:08:54,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784582458] [2021-03-12 10:08:54,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491552256] [2021-03-12 10:08:54,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:08:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:54,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-12 10:08:54,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:08:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:08:55,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:08:55,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2021-03-12 10:08:55,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423998834] [2021-03-12 10:08:55,022 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-12 10:08:55,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:08:55,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-12 10:08:55,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-12 10:08:55,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:55,023 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:08:55,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-03-12 10:08:55,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:55,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:55,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:55,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:55,024 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:55,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:55,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:55,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:08:55,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:08:55,299 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:55,300 INFO L82 PathProgramCache]: Analyzing trace with hash 696560499, now seen corresponding path program 2 times [2021-03-12 10:08:55,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:55,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569065533] [2021-03-12 10:08:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:55,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:55,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:08:55,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569065533] [2021-03-12 10:08:55,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553502341] [2021-03-12 10:08:55,573 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 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 [2021-03-12 10:08:55,614 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 10:08:55,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:08:55,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2021-03-12 10:08:55,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:08:55,854 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:08:55,854 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 27 [2021-03-12 10:08:55,872 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:08:55,879 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:08:55,882 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-12 10:08:55,882 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:40, output treesize:26 [2021-03-12 10:08:55,980 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-03-12 10:08:55,981 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-03-12 10:08:55,982 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:08:55,985 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:08:55,986 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:08:55,986 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:5 [2021-03-12 10:08:55,997 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:08:55,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:08:55,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 23 [2021-03-12 10:08:55,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829077998] [2021-03-12 10:08:55,998 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-03-12 10:08:55,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:08:55,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-03-12 10:08:55,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2021-03-12 10:08:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:56,000 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:08:56,000 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 23 states have internal predecessors, (49), 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) [2021-03-12 10:08:56,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:56,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:08:56,000 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:08:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:08:56,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:08:56,431 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:56,432 INFO L82 PathProgramCache]: Analyzing trace with hash -233153263, now seen corresponding path program 2 times [2021-03-12 10:08:56,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:56,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472923047] [2021-03-12 10:08:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:56,521 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:08:56,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472923047] [2021-03-12 10:08:56,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291674702] [2021-03-12 10:08:56,521 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 [2021-03-12 10:08:56,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-12 10:08:56,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:08:56,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-12 10:08:56,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:08:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:08:56,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:08:56,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 8 [2021-03-12 10:08:56,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930948980] [2021-03-12 10:08:56,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-03-12 10:08:56,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:08:56,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-03-12 10:08:56,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-03-12 10:08:56,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:56,645 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:08:56,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-03-12 10:08:56,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,645 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:56,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:08:56,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:08:56,646 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:08:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:08:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:08:56,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:08:56,909 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:56,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:56,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1353098016, now seen corresponding path program 3 times [2021-03-12 10:08:56,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:56,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124412955] [2021-03-12 10:08:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:08:57,388 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:08:57,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124412955] [2021-03-12 10:08:57,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031239964] [2021-03-12 10:08:57,388 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 [2021-03-12 10:08:57,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-03-12 10:08:57,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:08:57,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 38 conjunts are in the unsatisfiable core [2021-03-12 10:08:57,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:08:57,882 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:08:57,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 80 [2021-03-12 10:08:57,900 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:08:57,980 INFO L628 ElimStorePlain]: treesize reduction 74, result has 56.0 percent of original size [2021-03-12 10:08:57,997 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:08:57,998 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:56, output treesize:32 [2021-03-12 10:08:58,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:08:58,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:08:58,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:08:58,327 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:08:58,328 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2021-03-12 10:08:58,360 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-12 10:08:58,370 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:08:58,375 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:08:58,375 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:26 [2021-03-12 10:08:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:08:58,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:08:58,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 41 [2021-03-12 10:08:58,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712989395] [2021-03-12 10:08:58,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-03-12 10:08:58,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:08:58,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-03-12 10:08:58,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1486, Unknown=0, NotChecked=0, Total=1722 [2021-03-12 10:08:58,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:58,459 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:08:58,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 1.8095238095238095) internal successors, (76), 41 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 10:08:58,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:58,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:58,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:58,460 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:08:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:08:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:08:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:08:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:59,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:08:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:08:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:08:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:08:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:08:59,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:08:59,607 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:08:59,607 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:08:59,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:08:59,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1578753977, now seen corresponding path program 4 times [2021-03-12 10:08:59,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:08:59,608 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798787136] [2021-03-12 10:08:59,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:08:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:09:00,288 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:09:00,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798787136] [2021-03-12 10:09:00,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061655089] [2021-03-12 10:09:00,289 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 [2021-03-12 10:09:00,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-12 10:09:00,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:09:00,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 47 conjunts are in the unsatisfiable core [2021-03-12 10:09:00,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:09:01,022 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:01,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 87 [2021-03-12 10:09:01,034 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:09:01,104 INFO L628 ElimStorePlain]: treesize reduction 44, result has 76.8 percent of original size [2021-03-12 10:09:01,144 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-12 10:09:01,144 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:72, output treesize:91 [2021-03-12 10:09:01,605 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-03-12 10:09:01,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 16 [2021-03-12 10:09:01,607 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:09:01,610 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:01,611 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:09:01,611 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:5 [2021-03-12 10:09:01,625 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:09:01,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:09:01,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 26] total 49 [2021-03-12 10:09:01,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898854825] [2021-03-12 10:09:01,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-03-12 10:09:01,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:09:01,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-03-12 10:09:01,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=289, Invalid=2161, Unknown=0, NotChecked=0, Total=2450 [2021-03-12 10:09:01,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:01,628 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:09:01,628 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 1.7) internal successors, (85), 49 states have internal predecessors, (85), 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) [2021-03-12 10:09:01,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:01,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:01,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:01,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:01,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:01,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:01,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:01,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:01,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:02,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:09:02,861 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:09:02,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:09:02,861 INFO L82 PathProgramCache]: Analyzing trace with hash -964360489, now seen corresponding path program 3 times [2021-03-12 10:09:02,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:09:02,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338127587] [2021-03-12 10:09:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:09:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:09:02,963 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:09:02,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338127587] [2021-03-12 10:09:02,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875391262] [2021-03-12 10:09:02,963 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 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 [2021-03-12 10:09:02,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-03-12 10:09:02,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:09:02,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-12 10:09:02,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:09:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 45 proven. 45 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:09:03,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:09:03,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 12 [2021-03-12 10:09:03,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964327891] [2021-03-12 10:09:03,109 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-12 10:09:03,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:09:03,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-12 10:09:03,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2021-03-12 10:09:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:03,110 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:09:03,110 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:03,110 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:03,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:03,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:09:03,377 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-03-12 10:09:03,377 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:09:03,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:09:03,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1821942298, now seen corresponding path program 5 times [2021-03-12 10:09:03,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:09:03,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873868791] [2021-03-12 10:09:03,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:09:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:09:04,323 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:09:04,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873868791] [2021-03-12 10:09:04,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386124025] [2021-03-12 10:09:04,323 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 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 [2021-03-12 10:09:04,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-12 10:09:04,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:09:04,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 57 conjunts are in the unsatisfiable core [2021-03-12 10:09:04,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:09:05,366 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:05,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 75 treesize of output 127 [2021-03-12 10:09:05,385 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:09:05,526 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2021-03-12 10:09:05,528 INFO L628 ElimStorePlain]: treesize reduction 118, result has 64.2 percent of original size [2021-03-12 10:09:05,586 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-12 10:09:05,587 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:86, output treesize:79 [2021-03-12 10:09:06,278 INFO L354 Elim1Store]: treesize reduction 112, result has 0.9 percent of original size [2021-03-12 10:09:06,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 19 [2021-03-12 10:09:06,280 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:09:06,284 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:06,285 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:09:06,285 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:56, output treesize:5 [2021-03-12 10:09:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:09:06,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:09:06,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 32] total 62 [2021-03-12 10:09:06,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427855629] [2021-03-12 10:09:06,299 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-03-12 10:09:06,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:09:06,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-03-12 10:09:06,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=3498, Unknown=0, NotChecked=0, Total=3906 [2021-03-12 10:09:06,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:06,301 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:09:06,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 62 states have internal predecessors, (103), 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) [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:06,301 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:09:06,302 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:07,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:09:07,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-12 10:09:08,187 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-03-12 10:09:08,188 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:09:08,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:09:08,188 INFO L82 PathProgramCache]: Analyzing trace with hash -349690896, now seen corresponding path program 4 times [2021-03-12 10:09:08,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:09:08,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557337730] [2021-03-12 10:09:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:09:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:09:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 66 proven. 69 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:09:08,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557337730] [2021-03-12 10:09:08,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273120014] [2021-03-12 10:09:08,327 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 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:09:08,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-12 10:09:08,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:09:08,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-12 10:09:08,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:09:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 66 proven. 69 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-03-12 10:09:08,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:09:08,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 14 [2021-03-12 10:09:08,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84314723] [2021-03-12 10:09:08,459 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-12 10:09:08,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:09:08,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-12 10:09:08,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2021-03-12 10:09:08,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:08,460 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:09:08,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 14 states have internal predecessors, (96), 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) [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-03-12 10:09:08,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:09:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-12 10:09:08,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:08,735 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:09:08,735 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:09:08,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:09:08,736 INFO L82 PathProgramCache]: Analyzing trace with hash 904748543, now seen corresponding path program 6 times [2021-03-12 10:09:08,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:09:08,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034329319] [2021-03-12 10:09:08,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:09:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:09:10,022 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:09:10,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034329319] [2021-03-12 10:09:10,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713089302] [2021-03-12 10:09:10,023 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:09:10,053 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-12 10:09:10,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-12 10:09:10,054 WARN L261 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 72 conjunts are in the unsatisfiable core [2021-03-12 10:09:10,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:09:11,612 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:11,612 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 6 new quantified variables, introduced 15 case distinctions, treesize of input 93 treesize of output 179 [2021-03-12 10:09:11,635 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:09:11,895 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 100 [2021-03-12 10:09:11,895 INFO L628 ElimStorePlain]: treesize reduction 160, result has 67.1 percent of original size [2021-03-12 10:09:11,943 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:09:11,943 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:104, output treesize:117 [2021-03-12 10:09:13,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-03-12 10:09:13,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-03-12 10:09:13,515 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:13,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 66 treesize of output 80 [2021-03-12 10:09:13,558 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-03-12 10:09:13,573 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:13,583 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:09:13,583 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:85, output treesize:17 [2021-03-12 10:09:13,721 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:09:13,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:09:13,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 39] total 78 [2021-03-12 10:09:13,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691625313] [2021-03-12 10:09:13,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-03-12 10:09:13,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:09:13,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-03-12 10:09:13,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=654, Invalid=5508, Unknown=0, NotChecked=0, Total=6162 [2021-03-12 10:09:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:13,725 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:09:13,725 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 1.6329113924050633) internal successors, (129), 78 states have internal predecessors, (129), 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) [2021-03-12 10:09:13,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:13,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:13,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:13,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:13,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:13,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:13,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:13,725 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:13,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:13,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:09:13,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-03-12 10:09:13,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:13,726 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:17,464 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-12 10:09:19,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-03-12 10:09:19,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-03-12 10:09:19,259 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-03-12 10:09:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-12 10:09:19,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1764623020, now seen corresponding path program 7 times [2021-03-12 10:09:19,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-12 10:09:19,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353514479] [2021-03-12 10:09:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-12 10:09:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:09:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:09:20,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353514479] [2021-03-12 10:09:20,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46061420] [2021-03-12 10:09:20,998 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-12 10:09:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-12 10:09:21,029 WARN L261 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 83 conjunts are in the unsatisfiable core [2021-03-12 10:09:21,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-12 10:09:26,092 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-03-12 10:09:26,101 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:26,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 109 treesize of output 237 [2021-03-12 10:09:26,139 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:09:26,579 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 128 [2021-03-12 10:09:26,580 INFO L628 ElimStorePlain]: treesize reduction 265, result has 62.1 percent of original size [2021-03-12 10:09:26,769 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-03-12 10:09:26,769 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 9 variables, input treesize:120, output treesize:128 [2021-03-12 10:09:28,457 INFO L354 Elim1Store]: treesize reduction 240, result has 0.4 percent of original size [2021-03-12 10:09:28,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 77 treesize of output 25 [2021-03-12 10:09:28,460 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-03-12 10:09:28,465 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-03-12 10:09:28,466 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-03-12 10:09:28,466 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:78, output treesize:5 [2021-03-12 10:09:28,481 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-12 10:09:28,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-12 10:09:28,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 44] total 88 [2021-03-12 10:09:28,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379445418] [2021-03-12 10:09:28,482 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-03-12 10:09:28,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-12 10:09:28,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-03-12 10:09:28,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=7135, Unknown=0, NotChecked=0, Total=7832 [2021-03-12 10:09:28,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:28,484 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-03-12 10:09:28,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 1.5617977528089888) internal successors, (139), 88 states have internal predecessors, (139), 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) [2021-03-12 10:09:28,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:28,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:28,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-03-12 10:09:28,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-03-12 10:09:28,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-03-12 10:09:28,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:28,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-03-12 10:09:28,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-03-12 10:09:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-03-12 10:09:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-03-12 10:09:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 33 states. [2021-03-12 10:09:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-03-12 10:09:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 43 states. [2021-03-12 10:09:28,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-03-12 10:09:31,611 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2021-03-12 10:09:50,652 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-03-12 10:09:50,867 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-03-12 10:09:50,868 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:226) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkValidity(IncrementalHoareTripleChecker.java:676) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:61) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:63) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:357) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:200) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetDelayReduction.search(SleepSetDelayReduction.java:182) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetDelayReduction.(SleepSetDelayReduction.java:105) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:195) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:507) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 40 more [2021-03-12 10:09:50,871 INFO L168 Benchmark]: Toolchain (without parser) took 57840.40 ms. Allocated memory was 255.9 MB in the beginning and 539.0 MB in the end (delta: 283.1 MB). Free memory was 236.4 MB in the beginning and 202.6 MB in the end (delta: 33.8 MB). Peak memory consumption was 318.5 MB. Max. memory is 16.0 GB. [2021-03-12 10:09:50,871 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-12 10:09:50,871 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.91 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 10:09:50,871 INFO L168 Benchmark]: Boogie Preprocessor took 18.48 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-12 10:09:50,871 INFO L168 Benchmark]: RCFGBuilder took 268.77 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 236.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. [2021-03-12 10:09:50,871 INFO L168 Benchmark]: TraceAbstraction took 57503.74 ms. Allocated memory was 255.9 MB in the beginning and 539.0 MB in the end (delta: 283.1 MB). Free memory was 236.1 MB in the beginning and 202.6 MB in the end (delta: 33.5 MB). Peak memory consumption was 316.8 MB. Max. memory is 16.0 GB. [2021-03-12 10:09:50,872 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 255.9 MB. Free memory is still 237.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.91 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 234.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.48 ms. Allocated memory is still 255.9 MB. Free memory was 234.5 MB in the beginning and 233.5 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 268.77 ms. Allocated memory is still 255.9 MB. Free memory was 233.5 MB in the beginning and 236.7 MB in the end (delta: -3.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 57503.74 ms. Allocated memory was 255.9 MB in the beginning and 539.0 MB in the end (delta: 283.1 MB). Free memory was 236.1 MB in the beginning and 202.6 MB in the end (delta: 33.5 MB). Peak memory consumption was 316.8 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...