/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 21:59:10,375 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 21:59:10,376 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 21:59:10,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-14 21:59:10,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-14 21:59:10,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-14 21:59:10,409 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-14 21:59:10,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-14 21:59:10,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-14 21:59:10,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-14 21:59:10,419 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-14 21:59:10,420 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-14 21:59:10,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-14 21:59:10,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-14 21:59:10,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-14 21:59:10,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-14 21:59:10,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-14 21:59:10,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-14 21:59:10,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-14 21:59:10,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-14 21:59:10,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-14 21:59:10,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-14 21:59:10,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-14 21:59:10,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-14 21:59:10,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-14 21:59:10,440 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-14 21:59:10,440 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-14 21:59:10,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-14 21:59:10,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-14 21:59:10,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-06-14 21:59:10,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-14 21:59:10,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-14 21:59:10,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-14 21:59:10,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-14 21:59:10,498 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 21:59:10,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 21:59:10,498 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 21:59:10,498 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 21:59:10,499 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 21:59:10,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 21:59:10,499 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 21:59:10,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 21:59:10,500 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 21:59:10,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 21:59:10,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 21:59:10,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 21:59:10,501 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 21:59:10,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 21:59:10,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 21:59:10,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 21:59:10,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 21:59:10,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 21:59:10,502 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 21:59:10,502 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-14 21:59:10,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 21:59:10,502 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 21:59:10,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 21:59:10,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 21:59:10,502 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-14 21:59:10,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 21:59:10,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 21:59:10,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 21:59:10,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 21:59:10,721 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 21:59:10,723 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 21:59:10,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl [2021-06-14 21:59:10,724 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/buffer-series.wvr.bpl' [2021-06-14 21:59:10,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 21:59:10,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 21:59:10,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 21:59:10,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 21:59:10,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 21:59:10,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,762 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 21:59:10,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 21:59:10,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 21:59:10,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 21:59:10,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,769 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... [2021-06-14 21:59:10,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 21:59:10,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 21:59:10,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 21:59:10,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 21:59:10,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 21:59:10,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 21:59:10,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 21:59:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 21:59:10,850 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 21:59:10,850 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 21:59:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 21:59:10,851 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 21:59:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 21:59:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 21:59:10,851 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 21:59:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 21:59:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 21:59:10,851 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-14 21:59:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-14 21:59:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-14 21:59:10,852 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 21:59:11,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 21:59:11,023 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 21:59:11,025 INFO L202 PluginConnector]: Adding new model buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 09:59:11 BoogieIcfgContainer [2021-06-14 21:59:11,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 21:59:11,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 21:59:11,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 21:59:11,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 21:59:11,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 09:59:10" (1/2) ... [2021-06-14 21:59:11,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f4769d and model type buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 09:59:11, skipping insertion in model container [2021-06-14 21:59:11,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-series.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 09:59:11" (2/2) ... [2021-06-14 21:59:11,029 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-series.wvr.bpl [2021-06-14 21:59:11,033 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 21:59:11,033 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 21:59:11,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 21:59:11,033 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 21:59:11,060 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-14 21:59:11,074 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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) [2021-06-14 21:59:11,114 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 21:59:11,115 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 21:59:11,115 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 21:59:11,115 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 21:59:11,115 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 21:59:11,115 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 21:59:11,115 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 21:59:11,115 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-14 21:59:11,354 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:11,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:11,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1185787872, now seen corresponding path program 1 times [2021-06-14 21:59:11,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:11,363 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704203831] [2021-06-14 21:59:11,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:11,481 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-14 21:59:11,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:11,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704203831] [2021-06-14 21:59:11,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704203831] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 21:59:11,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 21:59:11,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 21:59:11,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655369170] [2021-06-14 21:59:11,489 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 21:59:11,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:59:11,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 21:59:11,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 21:59:11,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:11,502 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:59:11,504 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:59:11,504 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:11,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:11,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-14 21:59:11,667 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:11,669 INFO L82 PathProgramCache]: Analyzing trace with hash 2033011505, now seen corresponding path program 2 times [2021-06-14 21:59:11,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:11,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146124680] [2021-06-14 21:59:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 33 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-14 21:59:11,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:11,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146124680] [2021-06-14 21:59:11,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146124680] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:11,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122883997] [2021-06-14 21:59:11,895 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:11,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 21:59:11,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:59:11,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-14 21:59:11,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:59:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-06-14 21:59:12,159 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122883997] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:12,159 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:59:12,159 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 3] total 15 [2021-06-14 21:59:12,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121394055] [2021-06-14 21:59:12,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-06-14 21:59:12,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:59:12,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-06-14 21:59:12,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-06-14 21:59:12,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:12,161 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:59:12,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 4.9375) internal successors, (79), 15 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:59:12,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:12,162 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 21:59:12,806 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:12,806 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:12,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:12,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1432907962, now seen corresponding path program 3 times [2021-06-14 21:59:12,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:12,807 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082904499] [2021-06-14 21:59:12,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:12,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked. [2021-06-14 21:59:12,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:12,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082904499] [2021-06-14 21:59:12,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082904499] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 21:59:12,894 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 21:59:12,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 21:59:12,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063393428] [2021-06-14 21:59:12,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 21:59:12,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:59:12,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 21:59:12,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 21:59:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:12,897 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:59:12,897 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:59:12,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:12,897 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 21:59:12,898 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-14 21:59:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:13,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-14 21:59:13,020 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:13,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:13,020 INFO L82 PathProgramCache]: Analyzing trace with hash 2013455370, now seen corresponding path program 4 times [2021-06-14 21:59:13,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:13,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124988792] [2021-06-14 21:59:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:13,151 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 208 proven. 84 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-06-14 21:59:13,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:13,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124988792] [2021-06-14 21:59:13,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124988792] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:13,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035897630] [2021-06-14 21:59:13,152 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:13,233 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 21:59:13,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:59:13,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-14 21:59:13,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:59:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 253 proven. 43 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-06-14 21:59:13,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035897630] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:13,473 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:59:13,473 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-06-14 21:59:13,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026392197] [2021-06-14 21:59:13,473 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-14 21:59:13,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:59:13,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-14 21:59:13,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-06-14 21:59:13,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:13,478 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:59:13,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.090909090909092) internal successors, (89), 10 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:59:13,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:13,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. [2021-06-14 21:59:13,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:13,478 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:14,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-14 21:59:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:14,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:14,725 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:14,727 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:14,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:14,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1661689328, now seen corresponding path program 5 times [2021-06-14 21:59:14,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:14,727 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459933935] [2021-06-14 21:59:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 217 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-06-14 21:59:14,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:14,762 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459933935] [2021-06-14 21:59:14,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459933935] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-14 21:59:14,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-14 21:59:14,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-14 21:59:14,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469734035] [2021-06-14 21:59:14,763 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-14 21:59:14,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:59:14,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-14 21:59:14,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-14 21:59:14,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:14,764 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:59:14,764 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:59:14,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:14,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-14 21:59:14,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:14,764 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:14,765 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:15,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-14 21:59:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:15,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,119 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-14 21:59:15,119 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:15,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:15,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1750829216, now seen corresponding path program 6 times [2021-06-14 21:59:15,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:15,120 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660827192] [2021-06-14 21:59:15,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 137 proven. 11 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-06-14 21:59:15,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:15,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660827192] [2021-06-14 21:59:15,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660827192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:15,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663616881] [2021-06-14 21:59:15,152 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:15,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-06-14 21:59:15,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:59:15,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-14 21:59:15,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:59:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 137 proven. 3 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2021-06-14 21:59:15,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663616881] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:15,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:59:15,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-06-14 21:59:15,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911823337] [2021-06-14 21:59:15,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-14 21:59:15,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:59:15,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-14 21:59:15,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-14 21:59:15,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:15,302 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:59:15,302 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:59:15,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 18 states. [2021-06-14 21:59:15,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:15,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,303 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:59:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:59:16,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:16,077 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:16,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:16,077 INFO L82 PathProgramCache]: Analyzing trace with hash 596254265, now seen corresponding path program 7 times [2021-06-14 21:59:16,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:16,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316941577] [2021-06-14 21:59:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 31 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-06-14 21:59:16,120 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:16,120 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316941577] [2021-06-14 21:59:16,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316941577] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:16,121 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121478615] [2021-06-14 21:59:16,121 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:16,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-14 21:59:16,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:59:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 28 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-06-14 21:59:16,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121478615] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:16,263 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:59:16,263 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 7 [2021-06-14 21:59:16,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139794709] [2021-06-14 21:59:16,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-14 21:59:16,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:59:16,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-14 21:59:16,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-06-14 21:59:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:16,267 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:59:16,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:59:16,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:16,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:59:16,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:16,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:16,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:16,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:59:16,267 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:59:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:16,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:59:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 21:59:17,033 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-14 21:59:17,033 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:17,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:17,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1602608009, now seen corresponding path program 8 times [2021-06-14 21:59:17,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:17,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983334973] [2021-06-14 21:59:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 21:59:18,358 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:18,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983334973] [2021-06-14 21:59:18,358 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983334973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:18,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771688788] [2021-06-14 21:59:18,358 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:18,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 21:59:18,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:59:18,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 82 conjunts are in the unsatisfiable core [2021-06-14 21:59:18,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:59:19,498 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-06-14 21:59:19,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 46 [2021-06-14 21:59:19,500 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 21:59:19,507 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:59:19,508 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 21:59:19,508 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:102, output treesize:55 [2021-06-14 21:59:19,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 45 [2021-06-14 21:59:19,579 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 21:59:19,581 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:59:19,581 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-14 21:59:19,581 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:61, output treesize:27 [2021-06-14 21:59:19,692 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:59:19,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 16 [2021-06-14 21:59:19,694 INFO L550 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: and 2 xjuncts. [2021-06-14 21:59:19,700 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:59:19,707 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2021-06-14 21:59:19,707 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:19 [2021-06-14 21:59:19,788 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-14 21:59:19,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771688788] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:19,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 21:59:19,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 51 [2021-06-14 21:59:19,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586623906] [2021-06-14 21:59:19,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-06-14 21:59:19,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 21:59:19,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-06-14 21:59:19,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=2447, Unknown=0, NotChecked=0, Total=2652 [2021-06-14 21:59:19,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:19,790 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 21:59:19,790 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.1346153846153846) internal successors, (111), 51 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 21:59:19,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:19,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:59:19,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:19,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:19,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:19,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:59:19,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-14 21:59:19,790 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 21:59:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-14 21:59:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-06-14 21:59:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-14 21:59:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-14 21:59:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-14 21:59:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-14 21:59:22,193 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:22,193 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 21:59:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 21:59:22,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1641743603, now seen corresponding path program 9 times [2021-06-14 21:59:22,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 21:59:22,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395157310] [2021-06-14 21:59:22,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 21:59:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 21:59:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 9 proven. 162 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-06-14 21:59:23,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 21:59:23,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395157310] [2021-06-14 21:59:23,920 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395157310] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 21:59:23,920 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97653756] [2021-06-14 21:59:23,920 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 21:59:23,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-06-14 21:59:23,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 21:59:23,976 WARN L261 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 124 conjunts are in the unsatisfiable core [2021-06-14 21:59:23,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 21:59:27,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:27,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:28,044 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 130 [2021-06-14 21:59:28,046 INFO L354 Elim1Store]: treesize reduction 10, result has 96.6 percent of original size [2021-06-14 21:59:28,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 18 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 27 case distinctions, treesize of input 118 treesize of output 360 [2021-06-14 21:59:28,774 WARN L205 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 1558 DAG size of output: 804 [2021-06-14 21:59:29,232 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 1558 DAG size of output: 804 [2021-06-14 21:59:29,563 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 751 DAG size of output: 751 [2021-06-14 21:59:29,574 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 21:59:30,996 WARN L205 SmtUtils]: Spent 1.42 s on a formula simplification. DAG size of input: 777 DAG size of output: 126 [2021-06-14 21:59:30,997 INFO L628 ElimStorePlain]: treesize reduction 13278, result has 3.2 percent of original size [2021-06-14 21:59:32,166 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-06-14 21:59:32,166 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:184, output treesize:115 [2021-06-14 21:59:32,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:32,543 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-06-14 21:59:32,543 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:59:32,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 10 select indices, 10 select index equivalence classes, 13 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 32 case distinctions, treesize of input 105 treesize of output 397 [2021-06-14 21:59:32,869 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 802 DAG size of output: 552 [2021-06-14 21:59:34,947 WARN L205 SmtUtils]: Spent 1.80 s on a formula simplification. DAG size of input: 3328 DAG size of output: 1755 [2021-06-14 21:59:36,767 WARN L205 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 3328 DAG size of output: 1755 [2021-06-14 21:59:38,151 WARN L205 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 1631 DAG size of output: 1631 [2021-06-14 21:59:38,176 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-14 21:59:38,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:38,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:38,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:38,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:38,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:38,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-06-14 21:59:38,351 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2021-06-14 21:59:38,351 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-06-14 21:59:38,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 59 treesize of output 117 [2021-06-14 21:59:38,354 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-14 21:59:43,981 WARN L205 SmtUtils]: Spent 5.63 s on a formula simplification. DAG size of input: 1643 DAG size of output: 137 [2021-06-14 21:59:43,981 INFO L628 ElimStorePlain]: treesize reduction 34997, result has 1.8 percent of original size [2021-06-14 21:59:46,673 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2021-06-14 21:59:46,673 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:195, output treesize:647 [2021-06-14 21:59:49,847 WARN L205 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 131 [2021-06-14 21:59:50,048 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2021-06-14 21:59:50,196 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 134 [2021-06-14 21:59:53,566 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 9 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown