/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistent-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-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 11:23:07,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 11:23:07,303 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 11:23:07,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 11:23:07,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 11:23:07,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 11:23:07,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 11:23:07,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 11:23:07,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 11:23:07,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 11:23:07,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 11:23:07,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 11:23:07,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 11:23:07,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 11:23:07,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 11:23:07,371 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 11:23:07,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-14 11:23:07,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-14 11:23:07,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-14 11:23:07,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-14 11:23:07,374 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-14 11:23:07,374 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-07-14 11:23:07,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 11:23:07,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 11:23:07,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 11:23:07,392 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-NewStatesSleepPersistent-NoLbe.epf [2021-07-14 11:23:07,418 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 11:23:07,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 11:23:07,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 11:23:07,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 11:23:07,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 11:23:07,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 11:23:07,421 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 11:23:07,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 11:23:07,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 11:23:07,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 11:23:07,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 11:23:07,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 11:23:07,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 11:23:07,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 11:23:07,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 11:23:07,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 11:23:07,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 11:23:07,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 11:23:07,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 11:23:07,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 11:23:07,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 11:23:07,423 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 11:23:07,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 11:23:07,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 11:23:07,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 11:23:07,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 11:23:07,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 11:23:07,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 11:23:07,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 11:23:07,440 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 11:23:07,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 11:23:07,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 11:23:07,441 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-14 11:23:07,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 11:23:07,673 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 11:23:07,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 11:23:07,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 11:23:07,697 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 11:23:07,697 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 11:23:07,698 INFO L432 ainManager$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 [2021-07-14 11:23:07,698 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' [2021-07-14 11:23:07,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 11:23:07,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 11:23:07,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 11:23:07,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 11:23:07,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 11:23:07,753 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,758 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 11:23:07,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 11:23:07,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 11:23:07,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 11:23:07,770 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,770 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,771 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,771 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,773 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,775 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,776 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 14.07 11:23:07" (1/1) ... [2021-07-14 11:23:07,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 11:23:07,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 11:23:07,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 11:23:07,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 11:23:07,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 11:23:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 11:23:07,826 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 11:23:07,826 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 11:23:07,826 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 11:23:07,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 11:23:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 11:23:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 11:23:07,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 11:23:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 11:23:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 11:23:07,827 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 11:23:07,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 11:23:07,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 11:23:07,828 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 11:23:07,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 11:23:07,955 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 11:23:07,956 INFO L202 PluginConnector]: Adding new model dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 11:23:07 BoogieIcfgContainer [2021-07-14 11:23:07,956 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 11:23:07,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 11:23:07,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 11:23:07,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 11:23:07,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 11:23:07" (1/2) ... [2021-07-14 11:23:07,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5057d998 and model type dot-product-array.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 11:23:07, skipping insertion in model container [2021-07-14 11:23:07,960 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 14.07 11:23:07" (2/2) ... [2021-07-14 11:23:07,961 INFO L111 eAbstractionObserver]: Analyzing ICFG dot-product-array.wvr.bpl [2021-07-14 11:23:07,965 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 11:23:07,965 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 11:23:07,965 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 11:23:07,966 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 11:23:07,992 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 11:23:08,007 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 11:23:08,072 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 11:23:08,072 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 11:23:08,072 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 11:23:08,072 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 11:23:08,072 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 11:23:08,072 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 11:23:08,072 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 11:23:08,073 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 11:23:08,168 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:08,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:08,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1294754641, now seen corresponding path program 1 times [2021-07-14 11:23:08,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:08,179 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976159164] [2021-07-14 11:23:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:08,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:08,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976159164] [2021-07-14 11:23:08,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976159164] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 11:23:08,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 11:23:08,331 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 11:23:08,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329724095] [2021-07-14 11:23:08,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 11:23:08,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:08,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 11:23:08,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 11:23:08,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:08,345 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:08,346 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 11:23:08,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:08,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:08,360 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 11:23:08,360 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:08,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:08,361 INFO L82 PathProgramCache]: Analyzing trace with hash -573812561, now seen corresponding path program 1 times [2021-07-14 11:23:08,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:08,361 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769693736] [2021-07-14 11:23:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:08,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 11:23:08,406 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:08,406 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769693736] [2021-07-14 11:23:08,406 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769693736] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 11:23:08,406 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 11:23:08,406 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-14 11:23:08,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056423373] [2021-07-14 11:23:08,407 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 11:23:08,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:08,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 11:23:08,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-14 11:23:08,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:08,408 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:08,409 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 11:23:08,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:08,409 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:08,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 11:23:08,464 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:08,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:08,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1553043955, now seen corresponding path program 1 times [2021-07-14 11:23:08,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:08,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320355556] [2021-07-14 11:23:08,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:08,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:08,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:08,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320355556] [2021-07-14 11:23:08,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320355556] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:08,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575335530] [2021-07-14 11:23:08,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:08,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-07-14 11:23:08,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:23:09,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:23:09,048 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 [2021-07-14 11:23:09,054 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-14 11:23:09,059 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:09,061 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:23:09,061 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 [2021-07-14 11:23:09,066 INFO L550 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-14 11:23:09,070 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:09,072 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 [2021-07-14 11:23:09,075 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-14 11:23:09,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:09,082 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. [2021-07-14 11:23:09,082 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2021-07-14 11:23:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:09,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575335530] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:09,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 11:23:09,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 11:23:09,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187225879] [2021-07-14 11:23:09,121 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 11:23:09,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:09,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 11:23:09,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-07-14 11:23:09,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:09,122 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:09,122 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 11 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 11:23:09,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:09,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:09,122 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:09,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:09,474 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:09,474 INFO L82 PathProgramCache]: Analyzing trace with hash -579044245, now seen corresponding path program 2 times [2021-07-14 11:23:09,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:09,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239437186] [2021-07-14 11:23:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:09,526 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:09,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:09,527 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239437186] [2021-07-14 11:23:09,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239437186] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:09,528 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067714044] [2021-07-14 11:23:09,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:09,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 11:23:09,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 11:23:09,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 11:23:09,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:23:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:09,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067714044] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:09,666 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 11:23:09,666 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-14 11:23:09,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448930673] [2021-07-14 11:23:09,666 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-14 11:23:09,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:09,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-14 11:23:09,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-14 11:23:09,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:09,667 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:09,667 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) [2021-07-14 11:23:09,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:09,667 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:09,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:09,668 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:10,023 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:10,024 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:10,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:10,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1258232401, now seen corresponding path program 1 times [2021-07-14 11:23:10,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:10,025 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318129612] [2021-07-14 11:23:10,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 11:23:10,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:10,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318129612] [2021-07-14 11:23:10,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318129612] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:10,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714806573] [2021-07-14 11:23:10,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:10,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 11:23:10,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:23:10,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 11:23:10,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714806573] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:10,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 11:23:10,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-14 11:23:10,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061711164] [2021-07-14 11:23:10,189 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 11:23:10,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:10,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 11:23:10,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-14 11:23:10,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:10,191 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:10,191 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 11:23:10,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:10,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:10,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:10,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:10,191 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:10,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:23:10,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:10,485 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:10,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1336527475, now seen corresponding path program 2 times [2021-07-14 11:23:10,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:10,486 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678377358] [2021-07-14 11:23:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:10,765 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:10,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:10,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678377358] [2021-07-14 11:23:10,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678377358] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:10,767 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348344370] [2021-07-14 11:23:10,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:10,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 11:23:10,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 11:23:10,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 37 conjunts are in the unsatisfiable core [2021-07-14 11:23:10,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:23:11,231 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:11,231 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 [2021-07-14 11:23:11,391 INFO L550 ElimStorePlain]: Start of recursive call 2: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-07-14 11:23:11,409 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:11,425 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:11,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 61 [2021-07-14 11:23:11,553 INFO L550 ElimStorePlain]: Start of recursive call 3: 4 dim-0 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-07-14 11:23:11,586 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:11,634 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:11,635 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 [2021-07-14 11:23:11,808 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 3 xjuncts. [2021-07-14 11:23:12,134 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 103 [2021-07-14 11:23:12,135 INFO L628 ElimStorePlain]: treesize reduction 322, result has 68.1 percent of original size [2021-07-14 11:23:12,601 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. [2021-07-14 11:23:12,602 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:77, output treesize:228 [2021-07-14 11:23:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:12,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348344370] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:12,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 11:23:12,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 25 [2021-07-14 11:23:12,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310117956] [2021-07-14 11:23:12,669 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-07-14 11:23:12,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:12,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-07-14 11:23:12,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2021-07-14 11:23:12,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:12,670 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:12,671 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 11:23:12,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:12,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:12,671 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:12,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:12,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:23:12,673 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:23:13,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:23:13,864 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-14 11:23:13,865 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:13,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:13,865 INFO L82 PathProgramCache]: Analyzing trace with hash 731317739, now seen corresponding path program 3 times [2021-07-14 11:23:13,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:13,865 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503201947] [2021-07-14 11:23:13,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:13,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:13,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503201947] [2021-07-14 11:23:13,940 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503201947] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:13,940 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715943445] [2021-07-14 11:23:13,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:13,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 11:23:13,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 11:23:13,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 11:23:13,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:23:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:14,138 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715943445] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:14,138 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 11:23:14,139 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2021-07-14 11:23:14,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830223039] [2021-07-14 11:23:14,140 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-07-14 11:23:14,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:14,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-07-14 11:23:14,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-07-14 11:23:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:14,141 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:14,141 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) [2021-07-14 11:23:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:23:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:23:14,141 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:23:14,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:23:14,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 11:23:14,648 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:14,648 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:14,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:14,648 INFO L82 PathProgramCache]: Analyzing trace with hash -138760401, now seen corresponding path program 4 times [2021-07-14 11:23:14,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:14,649 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241725877] [2021-07-14 11:23:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 11:23:14,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:14,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241725877] [2021-07-14 11:23:14,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241725877] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:14,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946020177] [2021-07-14 11:23:14,726 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:14,754 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 11:23:14,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 11:23:14,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-14 11:23:14,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:23:14,855 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-14 11:23:14,856 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946020177] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:14,856 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 11:23:14,856 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-07-14 11:23:14,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136699506] [2021-07-14 11:23:14,856 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-07-14 11:23:14,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:14,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-07-14 11:23:14,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2021-07-14 11:23:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:14,857 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:14,857 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 11:23:14,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:14,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:14,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:14,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:14,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:23:14,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:23:14,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 11:23:14,857 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:23:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:23:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 11:23:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 11:23:15,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2021-07-14 11:23:15,213 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:23:15,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:23:15,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2141798669, now seen corresponding path program 5 times [2021-07-14 11:23:15,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:23:15,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523458094] [2021-07-14 11:23:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:23:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:23:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:15,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:23:15,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523458094] [2021-07-14 11:23:15,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523458094] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:15,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22412556] [2021-07-14 11:23:15,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:23:15,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 11:23:15,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 11:23:15,666 WARN L261 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 48 conjunts are in the unsatisfiable core [2021-07-14 11:23:15,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:23:25,666 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2021-07-14 11:23:25,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:23:25,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:23:25,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:23:25,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:23:25,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:23:25,784 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 [2021-07-14 11:23:25,786 INFO L550 ElimStorePlain]: Start of recursive call 2: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-07-14 11:23:25,795 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:25,797 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:23:25,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:23:25,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:23:25,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:23:25,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:23:25,800 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 [2021-07-14 11:23:25,802 INFO L550 ElimStorePlain]: Start of recursive call 3: 5 dim-0 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-07-14 11:23:25,810 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:25,858 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:23:25,858 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 [2021-07-14 11:23:26,481 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 197 [2021-07-14 11:23:26,834 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 258 DAG size of output: 240 [2021-07-14 11:23:27,845 WARN L205 SmtUtils]: Spent 977.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-07-14 11:23:28,809 WARN L205 SmtUtils]: Spent 962.00 ms on a formula simplification. DAG size of input: 307 DAG size of output: 287 [2021-07-14 11:23:29,767 WARN L205 SmtUtils]: Spent 954.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 295 [2021-07-14 11:23:30,127 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-07-14 11:23:30,614 WARN L205 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-07-14 11:23:30,917 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-07-14 11:23:31,050 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-07-14 11:23:31,181 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-07-14 11:23:31,894 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-07-14 11:23:32,271 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-07-14 11:23:32,642 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-07-14 11:23:33,305 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 157 [2021-07-14 11:23:34,410 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-07-14 11:23:35,458 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 313 DAG size of output: 293 [2021-07-14 11:23:36,488 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-07-14 11:23:37,725 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-07-14 11:23:38,798 WARN L205 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 286 DAG size of output: 288 [2021-07-14 11:23:39,773 WARN L205 SmtUtils]: Spent 963.00 ms on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-07-14 11:23:40,502 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2021-07-14 11:23:40,759 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 147 [2021-07-14 11:23:41,153 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-07-14 11:23:41,629 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 231 [2021-07-14 11:23:41,924 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 184 [2021-07-14 11:23:42,052 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-07-14 11:23:42,178 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 198 [2021-07-14 11:23:42,856 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 240 DAG size of output: 242 [2021-07-14 11:23:43,227 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-07-14 11:23:43,612 WARN L205 SmtUtils]: Spent 383.00 ms on a formula simplification. DAG size of input: 238 DAG size of output: 240 [2021-07-14 11:23:44,632 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 285 DAG size of output: 287 [2021-07-14 11:23:45,621 WARN L205 SmtUtils]: Spent 987.00 ms on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-07-14 11:23:46,654 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 283 DAG size of output: 285 [2021-07-14 11:23:47,778 WARN L205 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 287 DAG size of output: 289 [2021-07-14 11:23:47,781 INFO L550 ElimStorePlain]: Start of recursive call 4: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-14 11:23:49,869 WARN L205 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 290 DAG size of output: 248 [2021-07-14 11:23:49,870 INFO L628 ElimStorePlain]: treesize reduction 15036, result has 42.6 percent of original size [2021-07-14 11:23:50,272 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 247 DAG size of output: 249 [2021-07-14 11:23:50,559 WARN L205 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 234 DAG size of output: 236 [2021-07-14 11:23:51,629 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. [2021-07-14 11:23:51,630 INFO L247 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:106, output treesize:3 [2021-07-14 11:23:51,650 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:23:51,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22412556] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:23:51,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 11:23:51,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2021-07-14 11:23:51,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852011216] [2021-07-14 11:23:51,654 INFO L462 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-07-14 11:23:51,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:23:51,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-07-14 11:23:51,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=740, Unknown=5, NotChecked=0, Total=870 [2021-07-14 11:23:51,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:23:51,654 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:23:51,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.1666666666666665) internal successors, (65), 30 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 11:23:51,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:25:21,586 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-07-14 11:25:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:25:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:25:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:25:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:25:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:25:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:25:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 11:25:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 11:25:36,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 11:25:36,463 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2021-07-14 11:25:36,464 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:25:36,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:25:36,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1128959833, now seen corresponding path program 6 times [2021-07-14 11:25:36,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:25:36,464 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458582578] [2021-07-14 11:25:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:25:36,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:25:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:25:36,574 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:25:36,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458582578] [2021-07-14 11:25:36,574 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458582578] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:25:36,574 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563609315] [2021-07-14 11:25:36,574 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:25:36,612 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-14 11:25:36,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 11:25:36,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-14 11:25:36,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:25:36,826 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 18 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:25:36,826 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563609315] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:25:36,826 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 11:25:36,826 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 29 [2021-07-14 11:25:36,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605517538] [2021-07-14 11:25:36,827 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-07-14 11:25:36,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 11:25:36,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-07-14 11:25:36,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=652, Unknown=0, NotChecked=0, Total=812 [2021-07-14 11:25:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:25:36,828 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 11:25:36,828 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) [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 25 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-14 11:25:36,828 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-14 11:25:37,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-14 11:25:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-07-14 11:25:37,234 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable647,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 11:25:37,234 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 11:25:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 11:25:37,235 INFO L82 PathProgramCache]: Analyzing trace with hash -858045307, now seen corresponding path program 7 times [2021-07-14 11:25:37,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 11:25:37,235 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229955937] [2021-07-14 11:25:37,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 11:25:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:25:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 1 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 11:25:37,889 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 11:25:37,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229955937] [2021-07-14 11:25:37,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229955937] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 11:25:37,889 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418909925] [2021-07-14 11:25:37,889 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 [2021-07-14 11:25:37,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 11:25:37,923 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 64 conjunts are in the unsatisfiable core [2021-07-14 11:25:37,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 11:25:38,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:25:38,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:25:38,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:25:38,696 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 [2021-07-14 11:25:38,699 INFO L550 ElimStorePlain]: Start of recursive call 2: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-14 11:25:38,709 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:25:38,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:25:38,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:25:38,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 11:25:38,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 11:25:38,718 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 [2021-07-14 11:25:38,721 INFO L550 ElimStorePlain]: Start of recursive call 3: 7 dim-0 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-14 11:25:38,728 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:25:38,844 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-07-14 11:25:38,845 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 11:25:38,845 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 [2021-07-14 11:25:39,300 WARN L205 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 192 [2021-07-14 11:25:40,344 WARN L205 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 239 DAG size of output: 216 [2021-07-14 11:25:43,026 WARN L205 SmtUtils]: Spent 2.68 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-07-14 11:25:45,664 WARN L205 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 270 DAG size of output: 240 [2021-07-14 11:25:48,551 WARN L205 SmtUtils]: Spent 2.88 s on a formula simplification. DAG size of input: 292 DAG size of output: 262 [2021-07-14 11:25:58,307 WARN L205 SmtUtils]: Spent 9.74 s on a formula simplification. DAG size of input: 258 DAG size of output: 270 [2021-07-14 11:26:07,910 WARN L205 SmtUtils]: Spent 9.60 s on a formula simplification. DAG size of input: 253 DAG size of output: 274 [2021-07-14 11:26:17,483 WARN L205 SmtUtils]: Spent 9.57 s on a formula simplification. DAG size of input: 248 DAG size of output: 266 [2021-07-14 11:26:20,133 WARN L205 SmtUtils]: Spent 2.65 s on a formula simplification. DAG size of input: 240 DAG size of output: 240 [2021-07-14 11:26:20,430 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 145 [2021-07-14 11:26:21,509 WARN L205 SmtUtils]: Spent 1.08 s on a formula simplification. DAG size of input: 219 DAG size of output: 219 [2021-07-14 11:26:21,955 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 197 [2021-07-14 11:26:22,292 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 155 [2021-07-14 11:26:22,743 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 167 [2021-07-14 11:26:23,448 WARN L205 SmtUtils]: Spent 702.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 161 [2021-07-14 11:26:23,692 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 163 [2021-07-14 11:26:24,823 WARN L205 SmtUtils]: Spent 1.13 s on a formula simplification. DAG size of input: 326 DAG size of output: 308 [2021-07-14 11:26:27,911 WARN L205 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 426 DAG size of output: 391 [2021-07-14 11:26:35,971 WARN L205 SmtUtils]: Spent 7.90 s on a formula simplification. DAG size of input: 513 DAG size of output: 465 [2021-07-14 11:26:55,247 WARN L205 SmtUtils]: Spent 19.27 s on a formula simplification. DAG size of input: 595 DAG size of output: 525 [2021-07-14 11:27:43,827 WARN L205 SmtUtils]: Spent 48.58 s on a formula simplification. DAG size of input: 694 DAG size of output: 619 [2021-07-14 11:29:41,141 WARN L205 SmtUtils]: Spent 1.96 m on a formula simplification. DAG size of input: 782 DAG size of output: 704 [2021-07-14 11:34:17,917 WARN L205 SmtUtils]: Spent 4.61 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