/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-02 02:08:09,319 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-02 02:08:09,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-02 02:08:09,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-02 02:08:09,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-02 02:08:09,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-02 02:08:09,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-02 02:08:09,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-02 02:08:09,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-02 02:08:09,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-02 02:08:09,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-02 02:08:09,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-02 02:08:09,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-02 02:08:09,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-02 02:08:09,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-02 02:08:09,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-02 02:08:09,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-02 02:08:09,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-02 02:08:09,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-02 02:08:09,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-02 02:08:09,393 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe.epf [2021-06-02 02:08:09,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-02 02:08:09,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-02 02:08:09,421 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-02 02:08:09,421 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-02 02:08:09,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-02 02:08:09,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-02 02:08:09,423 INFO L138 SettingsManager]: * Use SBE=true [2021-06-02 02:08:09,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-02 02:08:09,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-02 02:08:09,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-02 02:08:09,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-02 02:08:09,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-02 02:08:09,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-02 02:08:09,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-02 02:08:09,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-02 02:08:09,425 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-02 02:08:09,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-02 02:08:09,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-02 02:08:09,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-02 02:08:09,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-02 02:08:09,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-02 02:08:09,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-02 02:08:09,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-02 02:08:09,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-02 02:08:09,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-02 02:08:09,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-02 02:08:09,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-02 02:08:09,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-02 02:08:09,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-02 02:08:09,426 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-02 02:08:09,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-02 02:08:09,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-02 02:08:09,427 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-02 02:08:09,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-02 02:08:09,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-02 02:08:09,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-02 02:08:09,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-02 02:08:09,699 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-02 02:08:09,700 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-02 02:08:09,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl [2021-06-02 02:08:09,700 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dot-product-array.wvr.bpl' [2021-06-02 02:08:09,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-02 02:08:09,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-02 02:08:09,732 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-02 02:08:09,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-02 02:08:09,733 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-02 02:08:09,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-02 02:08:09,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-02 02:08:09,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-02 02:08:09,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-02 02:08:09,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... [2021-06-02 02:08:09,771 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-02 02:08:09,773 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-02 02:08:09,773 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-02 02:08:09,773 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-02 02:08:09,774 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-02 02:08:09,831 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-02 02:08:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-02 02:08:09,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-02 02:08:09,832 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-02 02:08:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-02 02:08:09,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-02 02:08:09,832 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-02 02:08:09,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-02 02:08:09,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-02 02:08:09,832 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-02 02:08:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-02 02:08:09,833 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-02 02:08:09,833 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-02 02:08:10,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-02 02:08:10,028 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-02 02:08:10,029 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.06 02:08:10 BoogieIcfgContainer [2021-06-02 02:08:10,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-02 02:08:10,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-02 02:08:10,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-02 02:08:10,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-02 02:08:10,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 02:08:09" (1/2) ... [2021-06-02 02:08:10,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e0a7692 and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.06 02:08:10, skipping insertion in model container [2021-06-02 02:08:10,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.06 02:08:10" (2/2) ... [2021-06-02 02:08:10,034 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-06-02 02:08:10,037 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-02 02:08:10,038 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-02 02:08:10,038 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-02 02:08:10,038 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-02 02:08:10,102 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-02 02:08:10,124 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 [2021-06-02 02:08:10,167 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-02 02:08:10,167 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-02 02:08:10,167 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-02 02:08:10,167 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-02 02:08:10,167 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-02 02:08:10,168 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-02 02:08:10,168 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-02 02:08:10,168 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-02 02:08:10,241 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:10,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:10,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1421528455, now seen corresponding path program 1 times [2021-06-02 02:08:10,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:10,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804149790] [2021-06-02 02:08:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:10,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:10,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804149790] [2021-06-02 02:08:10,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804149790] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-02 02:08:10,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-02 02:08:10,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-02 02:08:10,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424490749] [2021-06-02 02:08:10,385 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-02 02:08:10,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:10,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-02 02:08:10,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-02 02:08:10,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:10,394 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:10,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-02 02:08:10,396 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:10,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:10,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-02 02:08:10,424 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:10,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:10,424 INFO L82 PathProgramCache]: Analyzing trace with hash 690038743, now seen corresponding path program 1 times [2021-06-02 02:08:10,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:10,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917791980] [2021-06-02 02:08:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-02 02:08:10,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:10,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917791980] [2021-06-02 02:08:10,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917791980] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-02 02:08:10,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-02 02:08:10,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-02 02:08:10,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424347697] [2021-06-02 02:08:10,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-02 02:08:10,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:10,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-02 02:08:10,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-02 02:08:10,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:10,458 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:10,458 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) [2021-06-02 02:08:10,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:10,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:10,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:10,487 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-02 02:08:10,487 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:10,488 INFO L82 PathProgramCache]: Analyzing trace with hash 2139358133, now seen corresponding path program 1 times [2021-06-02 02:08:10,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:10,488 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475532772] [2021-06-02 02:08:10,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:10,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:10,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:10,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475532772] [2021-06-02 02:08:10,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475532772] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:10,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555622937] [2021-06-02 02:08:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-02 02:08:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:10,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-06-02 02:08:10,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:08:10,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:08:10,979 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 23 treesize of output 19 [2021-06-02 02:08:10,983 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-02 02:08:10,988 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:10,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:08:10,991 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 19 treesize of output 15 [2021-06-02 02:08:10,995 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-02 02:08:10,999 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:11,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-06-02 02:08:11,003 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-02 02:08:11,007 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:11,010 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-02 02:08:11,011 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-06-02 02:08:11,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:11,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555622937] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:11,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-02 02:08:11,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-02 02:08:11,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603771171] [2021-06-02 02:08:11,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-02 02:08:11,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:11,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-02 02:08:11,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-06-02 02:08:11,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:11,048 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:11,048 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) [2021-06-02 02:08:11,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:11,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:11,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:11,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-02 02:08:11,373 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:11,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:11,374 INFO L82 PathProgramCache]: Analyzing trace with hash 428481043, now seen corresponding path program 2 times [2021-06-02 02:08:11,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:11,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633285343] [2021-06-02 02:08:11,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:11,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:11,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633285343] [2021-06-02 02:08:11,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633285343] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:11,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777343239] [2021-06-02 02:08:11,422 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-02 02:08:11,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-02 02:08:11,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-02 02:08:11,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-02 02:08:11,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:08:11,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:11,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777343239] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:11,543 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-02 02:08:11,543 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-02 02:08:11,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143852825] [2021-06-02 02:08:11,544 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-02 02:08:11,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:11,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-02 02:08:11,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-06-02 02:08:11,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:11,544 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:11,544 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-02 02:08:11,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:11,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:11,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:11,545 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:11,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:11,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:11,890 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-02 02:08:11,891 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash -59020201, now seen corresponding path program 1 times [2021-06-02 02:08:11,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:11,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990156219] [2021-06-02 02:08:11,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-02 02:08:11,940 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:11,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990156219] [2021-06-02 02:08:11,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990156219] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:11,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895743534] [2021-06-02 02:08:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-02 02:08:11,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:11,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-02 02:08:11,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:08:12,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-02 02:08:12,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895743534] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:12,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-02 02:08:12,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-06-02 02:08:12,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85242592] [2021-06-02 02:08:12,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-02 02:08:12,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:12,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-02 02:08:12,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-06-02 02:08:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:12,068 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:12,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 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) [2021-06-02 02:08:12,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:12,068 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:12,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:12,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:12,069 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:12,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:12,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:08:12,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-02 02:08:12,361 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:12,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:12,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1348287435, now seen corresponding path program 2 times [2021-06-02 02:08:12,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:12,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623682791] [2021-06-02 02:08:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:12,695 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:12,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623682791] [2021-06-02 02:08:12,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623682791] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:12,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517249400] [2021-06-02 02:08:12,695 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 [2021-06-02 02:08:12,728 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-02 02:08:12,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-02 02:08:12,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 37 conjunts are in the unsatisfiable core [2021-06-02 02:08:12,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:08:13,178 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:13,179 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 61 treesize of output 73 [2021-06-02 02:08:13,429 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-02 02:08:13,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:13,469 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:13,470 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 49 treesize of output 61 [2021-06-02 02:08:13,661 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-06-02 02:08:13,695 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:13,731 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:13,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 85 [2021-06-02 02:08:13,897 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-06-02 02:08:14,228 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2021-06-02 02:08:14,229 INFO L628 ElimStorePlain]: treesize reduction 322, result has 68.1 percent of original size [2021-06-02 02:08:14,661 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-02 02:08:14,661 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:77, output treesize:228 [2021-06-02 02:08:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:14,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517249400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:14,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-02 02:08:14,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-06-02 02:08:14,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195811827] [2021-06-02 02:08:14,728 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-02 02:08:14,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:14,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-02 02:08:14,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-06-02 02:08:14,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:14,729 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:14,729 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.08) internal successors, (52), 25 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) [2021-06-02 02:08:14,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:14,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:14,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:14,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:14,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:08:14,729 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:15,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:08:15,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:08:15,744 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-06-02 02:08:15,745 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:15,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:15,745 INFO L82 PathProgramCache]: Analyzing trace with hash 911449235, now seen corresponding path program 3 times [2021-06-02 02:08:15,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:15,745 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190435525] [2021-06-02 02:08:15,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:15,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:15,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:15,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190435525] [2021-06-02 02:08:15,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190435525] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:15,814 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224602850] [2021-06-02 02:08:15,814 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 [2021-06-02 02:08:15,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-02 02:08:15,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-02 02:08:15,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-02 02:08:15,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:08:15,985 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:15,985 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224602850] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:15,985 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-02 02:08:15,985 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-06-02 02:08:15,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499012487] [2021-06-02 02:08:15,986 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-02 02:08:15,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:15,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-02 02:08:15,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-06-02 02:08:15,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:15,986 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:15,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.55) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-02 02:08:15,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:15,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:15,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:15,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:15,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:08:15,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:08:15,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:08:16,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:08:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-02 02:08:16,556 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-02 02:08:16,557 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:16,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1145065769, now seen corresponding path program 4 times [2021-06-02 02:08:16,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:16,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717274574] [2021-06-02 02:08:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-02 02:08:16,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:16,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717274574] [2021-06-02 02:08:16,620 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717274574] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:16,620 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833953431] [2021-06-02 02:08:16,620 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 [2021-06-02 02:08:16,662 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-02 02:08:16,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-02 02:08:16,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-02 02:08:16,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:08:16,761 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-02 02:08:16,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833953431] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:16,761 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-02 02:08:16,762 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-06-02 02:08:16,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783851737] [2021-06-02 02:08:16,762 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-02 02:08:16,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:16,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-02 02:08:16,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-06-02 02:08:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:16,763 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:16,763 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-02 02:08:16,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:16,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:16,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:16,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:16,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:08:16,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:08:16,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-02 02:08:16,763 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:08:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:08:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-02 02:08:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-02 02:08:17,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-06-02 02:08:17,085 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:08:17,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:08:17,085 INFO L82 PathProgramCache]: Analyzing trace with hash 754469045, now seen corresponding path program 5 times [2021-06-02 02:08:17,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:08:17,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694232590] [2021-06-02 02:08:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:08:17,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:08:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:17,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:08:17,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694232590] [2021-06-02 02:08:17,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694232590] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:17,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364421465] [2021-06-02 02:08:17,482 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 [2021-06-02 02:08:17,516 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-06-02 02:08:17,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-02 02:08:17,517 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-06-02 02:08:17,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:08:26,662 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-06-02 02:08:27,141 WARN L205 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2021-06-02 02:08:27,898 WARN L205 SmtUtils]: Spent 716.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2021-06-02 02:08:27,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:08:27,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:08:27,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:08:27,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:08:27,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:08:27,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 77 [2021-06-02 02:08:27,939 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-02 02:08:27,948 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:27,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:08:27,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:08:27,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:08:27,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:08:27,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:08:27,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 57 [2021-06-02 02:08:27,955 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-06-02 02:08:27,963 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:28,012 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:08:28,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 57 treesize of output 137 [2021-06-02 02:08:28,649 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2021-06-02 02:08:29,022 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 240 [2021-06-02 02:08:30,054 WARN L205 SmtUtils]: Spent 996.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-02 02:08:31,053 WARN L205 SmtUtils]: Spent 997.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-06-02 02:08:32,055 WARN L205 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 295 [2021-06-02 02:08:32,416 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-02 02:08:32,894 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-02 02:08:33,193 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-02 02:08:33,333 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-02 02:08:33,518 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-02 02:08:34,181 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-02 02:08:34,563 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-02 02:08:34,940 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-02 02:08:35,551 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2021-06-02 02:08:36,650 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-02 02:08:37,715 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 313 DAG size of output: 293 [2021-06-02 02:08:38,735 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-02 02:08:39,892 WARN L205 SmtUtils]: Spent 1.16 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-02 02:08:40,978 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 286 DAG size of output: 288 [2021-06-02 02:08:41,933 WARN L205 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-02 02:08:42,530 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-06-02 02:08:42,765 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2021-06-02 02:08:43,157 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-02 02:08:43,635 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-06-02 02:08:43,900 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-06-02 02:08:44,030 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-02 02:08:44,160 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-06-02 02:08:44,821 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-06-02 02:08:45,199 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-02 02:08:45,579 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-06-02 02:08:46,593 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-06-02 02:08:47,606 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-02 02:08:48,622 WARN L205 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-06-02 02:08:49,796 WARN L205 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-06-02 02:08:49,799 INFO L550 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-06-02 02:08:51,924 WARN L205 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 290 DAG size of output: 248 [2021-06-02 02:08:51,925 INFO L628 ElimStorePlain]: treesize reduction 15036, result has 42.6 percent of original size [2021-06-02 02:08:52,348 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 249 [2021-06-02 02:08:52,651 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 236 [2021-06-02 02:08:53,759 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-06-02 02:08:53,759 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-06-02 02:08:53,779 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:08:53,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364421465] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:08:53,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-02 02:08:53,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-06-02 02:08:53,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001043104] [2021-06-02 02:08:53,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-06-02 02:08:53,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:08:53,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-06-02 02:08:53,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-06-02 02:08:53,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:08:53,783 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:08:53,783 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.2333333333333334) internal successors, (67), 30 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-02 02:08:53,783 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:09:52,036 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 56 [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-02 02:09:52,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-02 02:09:52,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-06-02 02:09:52,560 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:09:52,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:09:52,560 INFO L82 PathProgramCache]: Analyzing trace with hash -127394481, now seen corresponding path program 6 times [2021-06-02 02:09:52,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:09:52,560 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873862274] [2021-06-02 02:09:52,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:09:52,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:09:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:09:52,680 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:09:52,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873862274] [2021-06-02 02:09:52,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873862274] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:09:52,680 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414040558] [2021-06-02 02:09:52,680 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 [2021-06-02 02:09:52,732 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-06-02 02:09:52,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-02 02:09:52,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-02 02:09:52,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:09:52,950 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:09:52,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414040558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:09:52,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-02 02:09:52,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-06-02 02:09:52,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793532219] [2021-06-02 02:09:52,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-02 02:09:52,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 02:09:52,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-02 02:09:52,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-06-02 02:09:52,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:09:52,952 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 02:09:52,952 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 29 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-06-02 02:09:52,952 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 02:09:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 02:09:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 02:09:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-02 02:09:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-02 02:09:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-02 02:09:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-02 02:09:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-02 02:09:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-02 02:09:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-02 02:09:53,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-02 02:09:53,336 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-02 02:09:53,337 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 02:09:53,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 02:09:53,337 INFO L82 PathProgramCache]: Analyzing trace with hash 726661421, now seen corresponding path program 7 times [2021-06-02 02:09:53,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 02:09:53,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229356268] [2021-06-02 02:09:53,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 02:09:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:09:54,014 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 02:09:54,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 02:09:54,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229356268] [2021-06-02 02:09:54,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229356268] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-02 02:09:54,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753717609] [2021-06-02 02:09:54,015 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 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 [2021-06-02 02:09:54,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 02:09:54,052 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-06-02 02:09:54,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-02 02:09:54,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,798 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:09:54,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:09:54,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,817 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:09:54,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 109 [2021-06-02 02:09:54,821 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-02 02:09:54,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:09:54,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:09:54,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,836 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:09:54,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-02 02:09:54,838 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-02 02:09:54,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 77 [2021-06-02 02:09:54,842 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-06-02 02:09:54,849 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:09:54,969 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-06-02 02:09:54,969 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-02 02:09:54,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 273 [2021-06-02 02:09:55,408 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2021-06-02 02:09:56,467 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 239 DAG size of output: 216 [2021-06-02 02:09:59,128 WARN L205 SmtUtils]: Spent 2.66 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-02 02:10:01,848 WARN L205 SmtUtils]: Spent 2.72 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-06-02 02:10:04,867 WARN L205 SmtUtils]: Spent 3.02 s on a formula simplification. DAG size of input: 292 DAG size of output: 262 [2021-06-02 02:10:14,728 WARN L205 SmtUtils]: Spent 9.86 s on a formula simplification. DAG size of input: 258 DAG size of output: 270 [2021-06-02 02:10:24,441 WARN L205 SmtUtils]: Spent 9.71 s on a formula simplification. DAG size of input: 253 DAG size of output: 274 [2021-06-02 02:10:34,167 WARN L205 SmtUtils]: Spent 9.72 s on a formula simplification. DAG size of input: 248 DAG size of output: 266 [2021-06-02 02:10:36,866 WARN L205 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 240 DAG size of output: 240 [2021-06-02 02:10:37,148 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-06-02 02:10:38,232 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2021-06-02 02:10:38,664 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-06-02 02:10:38,941 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2021-06-02 02:10:39,357 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2021-06-02 02:10:39,984 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 161 [2021-06-02 02:10:41,174 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 326 DAG size of output: 308 [2021-06-02 02:10:44,327 WARN L205 SmtUtils]: Spent 3.15 s on a formula simplification. DAG size of input: 426 DAG size of output: 391 [2021-06-02 02:10:44,484 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 151 [2021-06-02 02:10:52,440 WARN L205 SmtUtils]: Spent 7.95 s on a formula simplification. DAG size of input: 513 DAG size of output: 465 [2021-06-02 02:11:11,850 WARN L205 SmtUtils]: Spent 19.40 s on a formula simplification. DAG size of input: 595 DAG size of output: 525 [2021-06-02 02:12:01,308 WARN L205 SmtUtils]: Spent 49.45 s on a formula simplification. DAG size of input: 694 DAG size of output: 619 [2021-06-02 02:14:00,586 WARN L205 SmtUtils]: Spent 1.99 m on a formula simplification. DAG size of input: 782 DAG size of output: 704 [2021-06-02 02:18:41,932 WARN L205 SmtUtils]: Spent 4.69 m on a formula simplification. DAG size of input: 867 DAG size of output: 788 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown