/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 04:45:54,446 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 04:45:54,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 04:45:54,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 04:45:54,532 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 04:45:54,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 04:45:54,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 04:45:54,535 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe.epf [2021-07-14 04:45:54,564 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 04:45:54,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 04:45:54,564 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 04:45:54,565 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 04:45:54,566 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 04:45:54,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 04:45:54,567 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 04:45:54,567 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 04:45:54,567 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 04:45:54,567 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 04:45:54,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 04:45:54,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 04:45:54,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 04:45:54,568 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 04:45:54,568 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 04:45:54,568 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 04:45:54,568 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 04:45:54,568 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 04:45:54,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 04:45:54,569 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 04:45:54,569 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 04:45:54,569 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 04:45:54,569 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 04:45:54,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 04:45:54,569 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 04:45:54,569 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 04:45:54,569 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 04:45:54,569 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 04:45:54,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 04:45:54,570 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 04:45:54,570 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 04:45:54,570 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 04:45:54,570 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-14 04:45:54,570 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 04:45:54,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 04:45:54,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 04:45:54,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 04:45:54,841 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 04:45:54,842 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 04:45:54,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl [2021-07-14 04:45:54,843 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/sum-fun.wvr.bpl' [2021-07-14 04:45:54,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 04:45:54,860 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 04:45:54,860 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 04:45:54,860 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 04:45:54,861 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 04:45:54,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 04:45:54,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 04:45:54,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 04:45:54,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 04:45:54,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,887 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... [2021-07-14 04:45:54,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 04:45:54,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 04:45:54,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 04:45:54,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 04:45:54,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 04:45:54,946 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 04:45:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 04:45:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 04:45:54,947 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 04:45:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 04:45:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 04:45:54,947 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 04:45:54,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 04:45:54,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 04:45:54,949 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 04:45:54,949 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 04:45:54,949 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 04:45:54,950 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 04:45:55,076 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 04:45:55,077 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 04:45:55,078 INFO L202 PluginConnector]: Adding new model sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:45:55 BoogieIcfgContainer [2021-07-14 04:45:55,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 04:45:55,079 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 04:45:55,079 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 04:45:55,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 04:45:55,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 04:45:54" (1/2) ... [2021-07-14 04:45:55,082 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fa1f17 and model type sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 04:45:55, skipping insertion in model container [2021-07-14 04:45:55,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "sum-fun.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 04:45:55" (2/2) ... [2021-07-14 04:45:55,083 INFO L111 eAbstractionObserver]: Analyzing ICFG sum-fun.wvr.bpl [2021-07-14 04:45:55,087 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 04:45:55,087 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 04:45:55,087 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 04:45:55,087 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 04:45:55,111 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 04:45:55,126 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 04:45:55,158 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 04:45:55,158 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 04:45:55,158 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 04:45:55,158 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 04:45:55,158 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 04:45:55,158 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 04:45:55,158 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 04:45:55,158 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 04:45:55,198 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:45:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:45:55,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1762402312, now seen corresponding path program 1 times [2021-07-14 04:45:55,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:45:55,207 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678492202] [2021-07-14 04:45:55,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:45:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:55,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:55,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:45:55,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678492202] [2021-07-14 04:45:55,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678492202] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 04:45:55,323 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 04:45:55,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 04:45:55,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542735004] [2021-07-14 04:45:55,326 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 04:45:55,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:45:55,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 04:45:55,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-14 04:45:55,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:55,335 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:45:55,350 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:45:55,350 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:55,426 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 04:45:55,426 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:45:55,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:45:55,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1272455018, now seen corresponding path program 1 times [2021-07-14 04:45:55,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:45:55,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599427282] [2021-07-14 04:45:55,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:45:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:45:55,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:45:55,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599427282] [2021-07-14 04:45:55,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599427282] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 04:45:55,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 04:45:55,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 04:45:55,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9252526] [2021-07-14 04:45:55,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 04:45:55,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:45:55,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 04:45:55,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 04:45:55,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:55,485 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:45:55,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:45:55,485 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:55,486 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:55,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:55,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 04:45:55,541 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:45:55,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:45:55,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1673281716, now seen corresponding path program 1 times [2021-07-14 04:45:55,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:45:55,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381907218] [2021-07-14 04:45:55,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:45:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:55,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:45:55,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381907218] [2021-07-14 04:45:55,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381907218] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:55,902 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160762182] [2021-07-14 04:45:55,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:45:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:55,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-14 04:45:55,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:45:56,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:45:56,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-14 04:45:56,268 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 04:45:56,274 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:45:56,277 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 04:45:56,278 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:7 [2021-07-14 04:45:56,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:56,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160762182] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:56,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:45:56,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 04:45:56,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694619069] [2021-07-14 04:45:56,319 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 04:45:56,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:45:56,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 04:45:56,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-14 04:45:56,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:56,321 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:45:56,322 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:45:56,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:56,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:56,322 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:45:56,702 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:45:56,703 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:45:56,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:45:56,704 INFO L82 PathProgramCache]: Analyzing trace with hash -811417006, now seen corresponding path program 2 times [2021-07-14 04:45:56,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:45:56,704 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037517125] [2021-07-14 04:45:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:45:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:56,743 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:45:56,743 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037517125] [2021-07-14 04:45:56,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037517125] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:56,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266593083] [2021-07-14 04:45:56,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:45:56,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 04:45:56,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:45:56,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 04:45:56,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:45:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:56,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266593083] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:56,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:45:56,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 04:45:56,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260322697] [2021-07-14 04:45:56,846 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 04:45:56,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:45:56,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 04:45:56,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-14 04:45:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:56,846 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:45:56,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:45:56,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:56,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:56,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:45:56,847 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:45:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:45:57,198 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:45:57,199 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:45:57,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:45:57,199 INFO L82 PathProgramCache]: Analyzing trace with hash 186541582, now seen corresponding path program 1 times [2021-07-14 04:45:57,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:45:57,200 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237257895] [2021-07-14 04:45:57,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:45:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:57,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:45:57,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:45:57,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237257895] [2021-07-14 04:45:57,243 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237257895] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:57,243 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462757502] [2021-07-14 04:45:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:45:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:57,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 04:45:57,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:45:57,381 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:45:57,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462757502] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:57,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:45:57,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 04:45:57,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478331915] [2021-07-14 04:45:57,382 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 04:45:57,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:45:57,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 04:45:57,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 04:45:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:57,383 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:45:57,383 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:45:57,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:57,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:57,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:45:57,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:45:57,383 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:57,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:45:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:45:57,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:45:57,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:45:57,708 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:45:57,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:45:57,708 INFO L82 PathProgramCache]: Analyzing trace with hash 477673772, now seen corresponding path program 2 times [2021-07-14 04:45:57,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:45:57,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084283444] [2021-07-14 04:45:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:45:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:58,042 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:45:58,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084283444] [2021-07-14 04:45:58,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084283444] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:58,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573138630] [2021-07-14 04:45:58,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:45:58,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 04:45:58,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:45:58,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 34 conjunts are in the unsatisfiable core [2021-07-14 04:45:58,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:45:58,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:45:58,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:45:58,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 04:45:58,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-07-14 04:45:58,427 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 04:45:58,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:45:58,433 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 04:45:58,433 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:5 [2021-07-14 04:45:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:58,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573138630] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:58,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:45:58,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2021-07-14 04:45:58,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683156928] [2021-07-14 04:45:58,458 INFO L462 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-07-14 04:45:58,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:45:58,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-07-14 04:45:58,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2021-07-14 04:45:58,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:58,460 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:45:58,461 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 22 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:45:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:45:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:45:58,461 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:45:58,462 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:45:59,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:45:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:45:59,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 04:45:59,440 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 04:45:59,441 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:45:59,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:45:59,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1082834122, now seen corresponding path program 3 times [2021-07-14 04:45:59,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:45:59,441 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237122557] [2021-07-14 04:45:59,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:45:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:45:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:59,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:45:59,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237122557] [2021-07-14 04:45:59,532 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237122557] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:59,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388217553] [2021-07-14 04:45:59,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:45:59,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 04:45:59,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:45:59,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 04:45:59,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:45:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:45:59,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388217553] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:45:59,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:45:59,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-14 04:45:59,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160792302] [2021-07-14 04:45:59,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-14 04:45:59,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:45:59,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-14 04:45:59,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-14 04:45:59,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:45:59,711 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:45:59,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.6) internal successors, (52), 20 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:45:59,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:45:59,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:45:59,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:45:59,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:45:59,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:45:59,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 04:45:59,711 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:46:00,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:46:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:46:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:46:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:46:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:46:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 04:46:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:46:00,335 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:46:00,335 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:46:00,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:46:00,336 INFO L82 PathProgramCache]: Analyzing trace with hash 2048156806, now seen corresponding path program 4 times [2021-07-14 04:46:00,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:46:00,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503238386] [2021-07-14 04:46:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:46:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:46:00,398 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:46:00,398 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:46:00,398 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503238386] [2021-07-14 04:46:00,398 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503238386] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:46:00,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717592412] [2021-07-14 04:46:00,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:46:00,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 04:46:00,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:46:00,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 04:46:00,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:46:00,555 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 04:46:00,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717592412] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:46:00,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:46:00,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-14 04:46:00,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471447567] [2021-07-14 04:46:00,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 04:46:00,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:46:00,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 04:46:00,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-14 04:46:00,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:46:00,556 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:46:00,557 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:46:00,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:46:00,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:46:00,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:46:00,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:46:00,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:46:00,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 04:46:00,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:46:00,557 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:46:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:46:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:46:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:46:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:46:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:46:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 04:46:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:46:00,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 04:46:00,914 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:46:00,914 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:46:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:46:00,914 INFO L82 PathProgramCache]: Analyzing trace with hash 561035684, now seen corresponding path program 5 times [2021-07-14 04:46:00,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:46:00,915 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517526046] [2021-07-14 04:46:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:46:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:46:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:46:01,320 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:46:01,320 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517526046] [2021-07-14 04:46:01,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517526046] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:46:01,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451808509] [2021-07-14 04:46:01,321 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:46:01,358 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 04:46:01,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:46:01,359 WARN L261 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 50 conjunts are in the unsatisfiable core [2021-07-14 04:46:01,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:46:02,077 INFO L354 Elim1Store]: treesize reduction 118, result has 2.5 percent of original size [2021-07-14 04:46:02,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 121 treesize of output 73 [2021-07-14 04:46:02,080 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 04:46:02,085 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:46:02,087 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 04:46:02,087 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:126, output treesize:5 [2021-07-14 04:46:02,111 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:46:02,111 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451808509] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:46:02,111 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 04:46:02,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2021-07-14 04:46:02,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22853121] [2021-07-14 04:46:02,112 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-07-14 04:46:02,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 04:46:02,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-07-14 04:46:02,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2021-07-14 04:46:02,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:46:02,113 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 04:46:02,113 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 04:46:02,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:46:02,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:46:02,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:46:02,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:46:02,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:46:02,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-07-14 04:46:02,113 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:46:02,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 04:46:02,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 04:46:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 04:46:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 04:46:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 04:46:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-07-14 04:46:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 04:46:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-07-14 04:46:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 04:46:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 04:46:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-07-14 04:46:04,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-14 04:46:04,025 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 04:46:04,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 04:46:04,025 INFO L82 PathProgramCache]: Analyzing trace with hash -352082848, now seen corresponding path program 6 times [2021-07-14 04:46:04,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 04:46:04,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236979276] [2021-07-14 04:46:04,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 04:46:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 04:46:04,569 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 04:46:04,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 04:46:04,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236979276] [2021-07-14 04:46:04,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236979276] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 04:46:04,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69395592] [2021-07-14 04:46:04,569 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 04:46:04,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-14 04:46:04,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 04:46:04,664 WARN L261 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 60 conjunts are in the unsatisfiable core [2021-07-14 04:46:04,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 04:46:05,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 04:46:05,847 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-07-14 04:46:05,847 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 04:46:05,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 24 case distinctions, treesize of input 52 treesize of output 246 [2021-07-14 04:46:06,257 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 820 DAG size of output: 575 [2021-07-14 04:46:06,527 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 836 DAG size of output: 590 [2021-07-14 04:46:07,147 WARN L205 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 587 [2021-07-14 04:46:07,361 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 547 DAG size of output: 547 [2021-07-14 04:46:07,695 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 476 DAG size of output: 546 [2021-07-14 04:46:07,987 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 472 DAG size of output: 511 [2021-07-14 04:46:09,444 WARN L205 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 1619 DAG size of output: 1183 [2021-07-14 04:46:10,406 WARN L205 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 1840 DAG size of output: 1339 [2021-07-14 04:46:11,012 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 504 DAG size of output: 375 [2021-07-14 04:46:11,198 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 589 DAG size of output: 432 [2021-07-14 04:46:12,523 WARN L205 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 2145 DAG size of output: 1563 [2021-07-14 04:46:14,330 WARN L205 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 2369 DAG size of output: 1754 [2021-07-14 04:46:16,102 WARN L205 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 2369 DAG size of output: 1754 [2021-07-14 04:46:17,901 WARN L205 SmtUtils]: Spent 1.78 s on a formula simplification. DAG size of input: 2375 DAG size of output: 1760 [2021-07-14 04:46:18,094 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 454 DAG size of output: 451 [2021-07-14 04:46:18,526 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 453 DAG size of output: 525 [2021-07-14 04:46:18,931 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 449 DAG size of output: 555 [2021-07-14 04:46:19,105 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 443 DAG size of output: 443 [2021-07-14 04:46:19,218 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 379 [2021-07-14 04:46:20,193 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 287 [2021-07-14 04:46:20,743 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 900 DAG size of output: 770 [2021-07-14 04:46:21,128 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 1209 DAG size of output: 1030 [2021-07-14 04:46:21,775 WARN L205 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 1597 DAG size of output: 1392 [2021-07-14 04:46:22,430 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 601 DAG size of output: 577 [2021-07-14 04:46:23,313 WARN L205 SmtUtils]: Spent 878.00 ms on a formula simplification. DAG size of input: 1891 DAG size of output: 1677 [2021-07-14 04:46:24,575 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 2187 DAG size of output: 1937 [2021-07-14 04:46:26,356 WARN L205 SmtUtils]: Spent 1.77 s on a formula simplification. DAG size of input: 2352 DAG size of output: 2094 [2021-07-14 04:46:28,109 WARN L205 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 2352 DAG size of output: 2094 [2021-07-14 04:46:29,890 WARN L205 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 2359 DAG size of output: 2101 [2021-07-14 04:46:31,126 WARN L205 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 1883 DAG size of output: 1893 [2021-07-14 04:46:31,284 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 376 DAG size of output: 376 [2021-07-14 04:46:31,785 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 379 DAG size of output: 337 [2021-07-14 04:46:32,285 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 514 DAG size of output: 483 [2021-07-14 04:46:32,758 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 729 DAG size of output: 688 [2021-07-14 04:46:33,040 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 789 DAG size of output: 748 [2021-07-14 04:46:33,665 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 362 DAG size of output: 366 [2021-07-14 04:46:34,243 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 615 DAG size of output: 590 [2021-07-14 04:46:34,362 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 256 [2021-07-14 04:46:35,620 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 892 DAG size of output: 787 [2021-07-14 04:46:36,429 WARN L205 SmtUtils]: Spent 803.00 ms on a formula simplification. DAG size of input: 1380 DAG size of output: 1254 [2021-07-14 04:46:37,690 WARN L205 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 2021 DAG size of output: 1861 [2021-07-14 04:46:38,383 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 411 [2021-07-14 04:46:38,525 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 512 DAG size of output: 411 [2021-07-14 04:46:38,753 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 516 DAG size of output: 415 [2021-07-14 04:46:40,146 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 578 DAG size of output: 555 [2021-07-14 04:46:40,380 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 765 DAG size of output: 742 [2021-07-14 04:46:40,722 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 940 DAG size of output: 904 [2021-07-14 04:46:41,527 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 1160 DAG size of output: 1097 [2021-07-14 04:46:43,597 WARN L205 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 2857 DAG size of output: 2640 [2021-07-14 04:46:44,479 WARN L205 SmtUtils]: Spent 864.00 ms on a formula simplification. DAG size of input: 1639 DAG size of output: 1649 [2021-07-14 04:46:45,037 WARN L205 SmtUtils]: Spent 547.00 ms on a formula simplification. DAG size of input: 1362 DAG size of output: 1371 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown