/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-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 09:34:47,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 09:34:47,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 09:34:47,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 09:34:47,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 09:34:47,106 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 09:34:47,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 09:34:47,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 09:34:47,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 09:34:47,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 09:34:47,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 09:34:47,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 09:34:47,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 09:34:47,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 09:34:47,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 09:34:47,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 09:34:47,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-10 09:34:47,133 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 09:34:47,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 09:34:47,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 09:34:47,136 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-Lockstep.epf [2021-07-10 09:34:47,165 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 09:34:47,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 09:34:47,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 09:34:47,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 09:34:47,167 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 09:34:47,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 09:34:47,167 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 09:34:47,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 09:34:47,168 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 09:34:47,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 09:34:47,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 09:34:47,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 09:34:47,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 09:34:47,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 09:34:47,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 09:34:47,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 09:34:47,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 09:34:47,171 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-10 09:34:47,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 09:34:47,406 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 09:34:47,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 09:34:47,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 09:34:47,423 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 09:34:47,424 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 09:34:47,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl [2021-07-10 09:34:47,425 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/parray-copy.wvr.bpl' [2021-07-10 09:34:47,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 09:34:47,443 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 09:34:47,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 09:34:47,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 09:34:47,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 09:34:47,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 09:34:47,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 09:34:47,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 09:34:47,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 09:34:47,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,468 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,472 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/1) ... [2021-07-10 09:34:47,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 09:34:47,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 09:34:47,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 09:34:47,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 09:34:47,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (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 [2021-07-10 09:34:47,530 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 09:34:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 09:34:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 09:34:47,530 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 09:34:47,530 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 09:34:47,530 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 09:34:47,531 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 09:34:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 09:34:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 09:34:47,531 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 09:34:47,531 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 09:34:47,531 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 09:34:47,532 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 09:34:47,722 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 09:34:47,722 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 09:34:47,723 INFO L202 PluginConnector]: Adding new model parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 09:34:47 BoogieIcfgContainer [2021-07-10 09:34:47,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 09:34:47,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 09:34:47,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 09:34:47,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 09:34:47,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 09:34:47" (1/2) ... [2021-07-10 09:34:47,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@342a97da and model type parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 09:34:47, skipping insertion in model container [2021-07-10 09:34:47,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parray-copy.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 09:34:47" (2/2) ... [2021-07-10 09:34:47,729 INFO L111 eAbstractionObserver]: Analyzing ICFG parray-copy.wvr.bpl [2021-07-10 09:34:47,747 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 09:34:47,747 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 09:34:47,747 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 09:34:47,747 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 09:34:47,786 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-10 09:34:47,818 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 [2021-07-10 09:34:47,854 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 09:34:47,854 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 09:34:47,854 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 09:34:47,854 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 09:34:47,854 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 09:34:47,855 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 09:34:47,855 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 09:34:47,855 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 09:34:47,943 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:34:47,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:34:47,947 INFO L82 PathProgramCache]: Analyzing trace with hash 680732382, now seen corresponding path program 1 times [2021-07-10 09:34:47,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:34:47,971 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318502622] [2021-07-10 09:34:47,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:34:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:48,114 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:34:48,114 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318502622] [2021-07-10 09:34:48,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318502622] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 09:34:48,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 09:34:48,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 09:34:48,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43834034] [2021-07-10 09:34:48,118 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-10 09:34:48,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:34:48,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-10 09:34:48,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-10 09:34:48,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:48,128 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:34:48,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 4.0) 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) [2021-07-10 09:34:48,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:48,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:48,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 09:34:48,168 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:34:48,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:34:48,169 INFO L82 PathProgramCache]: Analyzing trace with hash 2056313276, now seen corresponding path program 1 times [2021-07-10 09:34:48,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:34:48,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074142789] [2021-07-10 09:34:48,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:34:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:48,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:34:48,195 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:34:48,195 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074142789] [2021-07-10 09:34:48,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074142789] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 09:34:48,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 09:34:48,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 09:34:48,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632608821] [2021-07-10 09:34:48,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 09:34:48,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:34:48,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 09:34:48,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 09:34:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:48,198 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:34:48,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2021-07-10 09:34:48,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:48,198 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:48,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:48,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-10 09:34:48,225 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:34:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:34:48,225 INFO L82 PathProgramCache]: Analyzing trace with hash 557145242, now seen corresponding path program 1 times [2021-07-10 09:34:48,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:34:48,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827344135] [2021-07-10 09:34:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:34:48,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:48,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:48,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:34:48,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827344135] [2021-07-10 09:34:48,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827344135] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:48,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069400319] [2021-07-10 09:34:48,490 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 [2021-07-10 09:34:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:48,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-10 09:34:48,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:34:48,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-07-10 09:34:48,796 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:48,802 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:48,806 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:34:48,806 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:20 [2021-07-10 09:34:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:48,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069400319] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:48,849 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:34:48,849 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-07-10 09:34:48,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998382803] [2021-07-10 09:34:48,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-10 09:34:48,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:34:48,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-10 09:34:48,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2021-07-10 09:34:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:48,854 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:34:48,855 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.4375) internal successors, (39), 16 states have internal predecessors, (39), 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) [2021-07-10 09:34:48,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:48,855 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:48,856 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:49,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:49,352 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:34:49,353 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:34:49,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:34:49,354 INFO L82 PathProgramCache]: Analyzing trace with hash 88240248, now seen corresponding path program 2 times [2021-07-10 09:34:49,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:34:49,354 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594551279] [2021-07-10 09:34:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:34:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:49,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:49,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:34:49,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594551279] [2021-07-10 09:34:49,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594551279] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:49,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550334502] [2021-07-10 09:34:49,404 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 [2021-07-10 09:34:49,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 09:34:49,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:34:49,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 09:34:49,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:34:49,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:49,546 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550334502] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:49,546 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:34:49,546 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-07-10 09:34:49,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383445343] [2021-07-10 09:34:49,547 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-10 09:34:49,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:34:49,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-10 09:34:49,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-07-10 09:34:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:49,548 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:34:49,548 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 3.25) internal successors, (39), 12 states have internal predecessors, (39), 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) [2021-07-10 09:34:49,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:49,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:49,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:49,548 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:49,884 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:34:49,885 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:34:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:34:49,885 INFO L82 PathProgramCache]: Analyzing trace with hash -484784964, now seen corresponding path program 1 times [2021-07-10 09:34:49,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:34:49,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582815344] [2021-07-10 09:34:49,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:34:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:49,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:34:49,943 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:34:49,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582815344] [2021-07-10 09:34:49,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582815344] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:49,943 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368701094] [2021-07-10 09:34:49,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:34:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:49,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-10 09:34:49,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:34:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:34:50,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368701094] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:50,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:34:50,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-07-10 09:34:50,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277869528] [2021-07-10 09:34:50,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-10 09:34:50,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:34:50,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-10 09:34:50,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-07-10 09:34:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:50,071 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:34:50,071 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 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) [2021-07-10 09:34:50,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:50,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:50,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:50,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:50,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:50,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:50,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:34:50,370 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:34:50,374 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:34:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:34:50,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1082852838, now seen corresponding path program 2 times [2021-07-10 09:34:50,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:34:50,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067928733] [2021-07-10 09:34:50,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:34:50,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:50,957 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:50,958 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:34:50,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067928733] [2021-07-10 09:34:50,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067928733] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:50,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307005996] [2021-07-10 09:34:50,960 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 [2021-07-10 09:34:50,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 09:34:50,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:34:50,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-10 09:34:50,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:34:51,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-07-10 09:34:51,080 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:51,086 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:51,086 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:34:51,087 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:20 [2021-07-10 09:34:51,136 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-07-10 09:34:51,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-07-10 09:34:51,138 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:51,146 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:51,154 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:34:51,154 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:32 [2021-07-10 09:34:51,260 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-07-10 09:34:51,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-07-10 09:34:51,262 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:51,272 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:51,278 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-10 09:34:51,279 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:41 [2021-07-10 09:34:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-07-10 09:34:51,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307005996] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:51,456 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:34:51,456 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2021-07-10 09:34:51,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308464819] [2021-07-10 09:34:51,457 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-10 09:34:51,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:34:51,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-10 09:34:51,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-07-10 09:34:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:51,458 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:34:51,458 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.4166666666666665) internal successors, (58), 24 states have internal predecessors, (58), 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) [2021-07-10 09:34:51,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:51,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:51,458 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:51,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:51,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:34:51,459 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:52,228 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 58 [2021-07-10 09:34:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:52,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:34:52,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:34:53,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-07-10 09:34:53,105 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:34:53,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:34:53,106 INFO L82 PathProgramCache]: Analyzing trace with hash -409263526, now seen corresponding path program 3 times [2021-07-10 09:34:53,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:34:53,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949813669] [2021-07-10 09:34:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:34:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:53,793 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:34:53,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949813669] [2021-07-10 09:34:53,793 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949813669] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:53,793 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517910489] [2021-07-10 09:34:53,793 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 [2021-07-10 09:34:53,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-10 09:34:53,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:34:53,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 18 conjunts are in the unsatisfiable core [2021-07-10 09:34:53,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:34:53,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-07-10 09:34:53,919 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:53,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:53,925 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:34:53,925 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:20 [2021-07-10 09:34:53,962 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-07-10 09:34:53,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2021-07-10 09:34:53,963 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:53,972 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:53,973 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:34:53,974 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:32 [2021-07-10 09:34:54,031 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-07-10 09:34:54,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 28 [2021-07-10 09:34:54,033 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:54,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:54,047 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-10 09:34:54,047 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:44 [2021-07-10 09:34:54,188 INFO L354 Elim1Store]: treesize reduction 72, result has 18.2 percent of original size [2021-07-10 09:34:54,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 30 treesize of output 38 [2021-07-10 09:34:54,192 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:54,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:54,212 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-10 09:34:54,212 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:54, output treesize:53 [2021-07-10 09:34:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-07-10 09:34:54,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517910489] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:54,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:34:54,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 27 [2021-07-10 09:34:54,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240453262] [2021-07-10 09:34:54,419 INFO L462 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-07-10 09:34:54,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:34:54,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-07-10 09:34:54,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2021-07-10 09:34:54,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:54,420 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:34:54,421 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 27 states have internal predecessors, (64), 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) [2021-07-10 09:34:54,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:54,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:54,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:54,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:54,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:34:54,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:34:54,421 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:54,702 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2021-07-10 09:34:54,952 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 61 [2021-07-10 09:34:55,109 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 60 [2021-07-10 09:34:55,521 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 68 [2021-07-10 09:34:55,804 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2021-07-10 09:34:56,048 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 81 [2021-07-10 09:34:56,415 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 58 [2021-07-10 09:34:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:34:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:34:56,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:34:56,913 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:34:56,914 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:34:56,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:34:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash 233429914, now seen corresponding path program 4 times [2021-07-10 09:34:56,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:34:56,914 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021036878] [2021-07-10 09:34:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:34:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:34:57,796 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:57,796 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:34:57,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021036878] [2021-07-10 09:34:57,796 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021036878] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:57,796 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653313383] [2021-07-10 09:34:57,797 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 [2021-07-10 09:34:57,836 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-10 09:34:57,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:34:57,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 29 conjunts are in the unsatisfiable core [2021-07-10 09:34:57,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:34:58,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-07-10 09:34:58,106 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:58,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,114 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:23 [2021-07-10 09:34:58,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:34:58,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2021-07-10 09:34:58,149 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,158 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:58,159 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,159 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:34 [2021-07-10 09:34:58,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:34:58,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:34:58,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:34:58,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 36 [2021-07-10 09:34:58,200 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,209 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:58,210 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,210 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:46, output treesize:45 [2021-07-10 09:34:58,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2021-07-10 09:34:58,286 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,295 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:58,296 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,296 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:41 [2021-07-10 09:34:58,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:34:58,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:34:58,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:34:58,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:34:58,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 48 [2021-07-10 09:34:58,352 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:34:58,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:34:58,365 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:34:58,365 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:49, output treesize:48 [2021-07-10 09:34:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:34:58,448 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653313383] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:34:58,448 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:34:58,448 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 34 [2021-07-10 09:34:58,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086901813] [2021-07-10 09:34:58,448 INFO L462 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-07-10 09:34:58,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:34:58,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-07-10 09:34:58,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2021-07-10 09:34:58,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:58,449 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:34:58,449 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.235294117647059) internal successors, (76), 34 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 09:34:58,449 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:58,449 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:58,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:58,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:58,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:34:58,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:34:58,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:34:58,450 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:34:59,635 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 52 [2021-07-10 09:34:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:34:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:34:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:34:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:34:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:34:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:34:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:34:59,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:00,174 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:35:00,174 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:35:00,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:35:00,174 INFO L82 PathProgramCache]: Analyzing trace with hash -960531592, now seen corresponding path program 5 times [2021-07-10 09:35:00,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:35:00,175 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230472458] [2021-07-10 09:35:00,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:35:00,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:35:00,296 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 16 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:35:00,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:35:00,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230472458] [2021-07-10 09:35:00,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230472458] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:00,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060298228] [2021-07-10 09:35:00,296 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 [2021-07-10 09:35:00,340 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-07-10 09:35:00,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:35:00,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-10 09:35:00,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:35:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 25 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:35:00,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060298228] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:00,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:35:00,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 28 [2021-07-10 09:35:00,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162764553] [2021-07-10 09:35:00,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-07-10 09:35:00,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:35:00,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-07-10 09:35:00,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2021-07-10 09:35:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:35:00,594 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:35:00,594 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.5357142857142856) internal successors, (71), 28 states have internal predecessors, (71), 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) [2021-07-10 09:35:00,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:35:00,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:35:00,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:35:00,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:35:00,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:35:00,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:00,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:00,594 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:00,595 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-10 09:35:01,460 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-07-10 09:35:01,461 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:35:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:35:01,461 INFO L82 PathProgramCache]: Analyzing trace with hash -933345348, now seen corresponding path program 6 times [2021-07-10 09:35:01,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:35:01,461 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678250835] [2021-07-10 09:35:01,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:35:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:35:01,559 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:35:01,560 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:35:01,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678250835] [2021-07-10 09:35:01,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678250835] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:01,560 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494517665] [2021-07-10 09:35:01,560 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 [2021-07-10 09:35:01,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-07-10 09:35:01,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:35:01,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2021-07-10 09:35:01,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:35:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 09:35:01,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494517665] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:01,792 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:35:01,792 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 23 [2021-07-10 09:35:01,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253763577] [2021-07-10 09:35:01,793 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-10 09:35:01,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:35:01,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-10 09:35:01,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-07-10 09:35:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:35:01,794 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:35:01,794 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.869565217391304) internal successors, (66), 23 states have internal predecessors, (66), 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) [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-07-10 09:35:01,794 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:02,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-10 09:35:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:02,238 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:35:02,239 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:35:02,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:35:02,239 INFO L82 PathProgramCache]: Analyzing trace with hash 2047738138, now seen corresponding path program 7 times [2021-07-10 09:35:02,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:35:02,239 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255229090] [2021-07-10 09:35:02,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:35:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:35:03,461 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:35:03,462 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:35:03,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255229090] [2021-07-10 09:35:03,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255229090] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:03,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197883532] [2021-07-10 09:35:03,462 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 [2021-07-10 09:35:03,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:35:03,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 37 conjunts are in the unsatisfiable core [2021-07-10 09:35:03,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:35:03,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-07-10 09:35:03,882 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:03,889 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:03,890 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:03,890 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2021-07-10 09:35:03,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-07-10 09:35:03,928 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:03,937 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:03,938 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:03,938 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:30 [2021-07-10 09:35:03,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:03,978 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:03,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2021-07-10 09:35:03,980 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:03,990 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:03,991 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:03,991 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:41 [2021-07-10 09:35:04,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 38 [2021-07-10 09:35:04,040 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:04,052 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:04,053 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:04,053 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:44 [2021-07-10 09:35:04,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 52 [2021-07-10 09:35:04,108 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:04,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:04,121 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:04,121 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:55 [2021-07-10 09:35:04,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 58 [2021-07-10 09:35:04,214 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:04,227 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:04,228 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:04,228 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:56, output treesize:55 [2021-07-10 09:35:04,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:04,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 68 [2021-07-10 09:35:04,316 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:04,330 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:04,331 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:04,331 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:63, output treesize:62 [2021-07-10 09:35:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:35:04,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197883532] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:04,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:35:04,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 44 [2021-07-10 09:35:04,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34613586] [2021-07-10 09:35:04,433 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-07-10 09:35:04,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:35:04,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-07-10 09:35:04,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=1665, Unknown=0, NotChecked=0, Total=1892 [2021-07-10 09:35:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:35:04,435 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:35:04,435 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 44 states have internal predecessors, (92), 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) [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:04,435 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:35:07,359 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-07-10 09:35:07,636 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2021-07-10 09:35:07,841 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2021-07-10 09:35:08,032 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 64 [2021-07-10 09:35:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:35:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:35:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:35:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:35:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:35:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-10 09:35:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-07-10 09:35:09,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:35:09,102 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:35:09,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:35:09,102 INFO L82 PathProgramCache]: Analyzing trace with hash -956175014, now seen corresponding path program 8 times [2021-07-10 09:35:09,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:35:09,103 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689649770] [2021-07-10 09:35:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:35:09,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:35:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 6 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:35:10,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:35:10,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689649770] [2021-07-10 09:35:10,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689649770] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:10,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [719640282] [2021-07-10 09:35:10,526 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:35:10,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 09:35:10,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:35:10,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 41 conjunts are in the unsatisfiable core [2021-07-10 09:35:10,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:35:10,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-07-10 09:35:10,993 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:11,002 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,002 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2021-07-10 09:35:11,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-07-10 09:35:11,045 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,055 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:11,055 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,055 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:30 [2021-07-10 09:35:11,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2021-07-10 09:35:11,103 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:11,114 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,114 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:41 [2021-07-10 09:35:11,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 46 [2021-07-10 09:35:11,169 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,181 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:11,182 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,182 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:52 [2021-07-10 09:35:11,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 60 [2021-07-10 09:35:11,241 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:11,254 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,254 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:63 [2021-07-10 09:35:11,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 74 [2021-07-10 09:35:11,320 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,334 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:11,334 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,334 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:74 [2021-07-10 09:35:11,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 68 [2021-07-10 09:35:11,454 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,467 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:11,468 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,468 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:63, output treesize:62 [2021-07-10 09:35:11,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 09:35:11,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 78 [2021-07-10 09:35:11,543 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:11,558 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:11,559 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:11,560 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:70, output treesize:69 [2021-07-10 09:35:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:35:11,662 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [719640282] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:11,662 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 09:35:11,662 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 48 [2021-07-10 09:35:11,662 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347537755] [2021-07-10 09:35:11,662 INFO L462 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-07-10 09:35:11,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 09:35:11,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-07-10 09:35:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1999, Unknown=0, NotChecked=0, Total=2256 [2021-07-10 09:35:11,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:35:11,663 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 09:35:11,663 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 48 states have internal predecessors, (100), 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) [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 60 states. [2021-07-10 09:35:11,664 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 09:35:15,153 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2021-07-10 09:35:15,435 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 52 [2021-07-10 09:35:15,631 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 69 [2021-07-10 09:35:15,819 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 62 [2021-07-10 09:35:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 09:35:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 09:35:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-10 09:35:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-10 09:35:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-10 09:35:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-07-10 09:35:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-10 09:35:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-07-10 09:35:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-07-10 09:35:16,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-07-10 09:35:17,157 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-07-10 09:35:17,157 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 09:35:17,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 09:35:17,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1470403942, now seen corresponding path program 9 times [2021-07-10 09:35:17,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 09:35:17,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966976801] [2021-07-10 09:35:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 09:35:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 09:35:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 16 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 09:35:18,936 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 09:35:18,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966976801] [2021-07-10 09:35:18,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966976801] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 09:35:18,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777698064] [2021-07-10 09:35:18,936 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 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 09:35:18,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-07-10 09:35:18,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 09:35:18,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 31 conjunts are in the unsatisfiable core [2021-07-10 09:35:18,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 09:35:19,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2021-07-10 09:35:19,174 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:19,180 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,181 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:24 [2021-07-10 09:35:19,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2021-07-10 09:35:19,225 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,232 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:19,233 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,233 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:27 [2021-07-10 09:35:19,291 INFO L354 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2021-07-10 09:35:19,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 28 [2021-07-10 09:35:19,292 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,307 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:19,309 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:19,309 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:40, output treesize:39 [2021-07-10 09:35:19,398 INFO L354 Elim1Store]: treesize reduction 64, result has 20.0 percent of original size [2021-07-10 09:35:19,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 38 [2021-07-10 09:35:19,399 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,413 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:19,417 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:19,417 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:51 [2021-07-10 09:35:19,527 INFO L354 Elim1Store]: treesize reduction 104, result has 16.8 percent of original size [2021-07-10 09:35:19,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 37 treesize of output 48 [2021-07-10 09:35:19,529 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:19,553 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:19,553 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:64, output treesize:63 [2021-07-10 09:35:19,686 INFO L354 Elim1Store]: treesize reduction 152, result has 14.6 percent of original size [2021-07-10 09:35:19,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 44 treesize of output 58 [2021-07-10 09:35:19,689 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,709 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:19,721 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:19,721 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:76, output treesize:75 [2021-07-10 09:35:19,917 INFO L354 Elim1Store]: treesize reduction 208, result has 13.0 percent of original size [2021-07-10 09:35:19,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 20 case distinctions, treesize of input 51 treesize of output 68 [2021-07-10 09:35:19,929 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:19,952 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:19,967 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:19,967 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:88, output treesize:87 [2021-07-10 09:35:20,330 INFO L354 Elim1Store]: treesize reduction 272, result has 11.7 percent of original size [2021-07-10 09:35:20,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 27 case distinctions, treesize of input 58 treesize of output 78 [2021-07-10 09:35:20,332 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:20,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:20,369 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:20,369 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 7 variables, input treesize:100, output treesize:99 [2021-07-10 09:35:23,275 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 34 [2021-07-10 09:35:23,275 INFO L354 Elim1Store]: treesize reduction 344, result has 10.6 percent of original size [2021-07-10 09:35:23,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 35 case distinctions, treesize of input 65 treesize of output 88 [2021-07-10 09:35:23,277 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 09:35:23,308 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 09:35:23,317 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 1 xjuncts. [2021-07-10 09:35:23,317 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 8 variables, input treesize:109, output treesize:108 [2021-07-10 09:35:51,492 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-07-10 09:35:51,493 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-07-10 09:35:51,704 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-07-10 09:35:51,705 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:597) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:238) ... 46 more [2021-07-10 09:35:51,708 INFO L168 Benchmark]: Toolchain (without parser) took 64265.29 ms. Allocated memory was 219.2 MB in the beginning and 346.0 MB in the end (delta: 126.9 MB). Free memory was 198.3 MB in the beginning and 199.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 127.0 MB. Max. memory is 8.0 GB. [2021-07-10 09:35:51,708 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 219.2 MB. Free memory is still 199.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-10 09:35:51,708 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.97 ms. Allocated memory is still 219.2 MB. Free memory was 198.2 MB in the beginning and 196.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-10 09:35:51,708 INFO L168 Benchmark]: Boogie Preprocessor took 10.67 ms. Allocated memory is still 219.2 MB. Free memory was 196.8 MB in the beginning and 195.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-10 09:35:51,708 INFO L168 Benchmark]: RCFGBuilder took 250.01 ms. Allocated memory is still 219.2 MB. Free memory was 195.7 MB in the beginning and 182.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-10 09:35:51,708 INFO L168 Benchmark]: TraceAbstraction took 63982.99 ms. Allocated memory was 219.2 MB in the beginning and 346.0 MB in the end (delta: 126.9 MB). Free memory was 182.2 MB in the beginning and 199.8 MB in the end (delta: -17.6 MB). Peak memory consumption was 111.3 MB. Max. memory is 8.0 GB. [2021-07-10 09:35:51,709 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 219.2 MB. Free memory is still 199.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 17.97 ms. Allocated memory is still 219.2 MB. Free memory was 198.2 MB in the beginning and 196.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 10.67 ms. Allocated memory is still 219.2 MB. Free memory was 196.8 MB in the beginning and 195.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 250.01 ms. Allocated memory is still 219.2 MB. Free memory was 195.7 MB in the beginning and 182.7 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 63982.99 ms. Allocated memory was 219.2 MB in the beginning and 346.0 MB in the end (delta: 126.9 MB). Free memory was 182.2 MB in the beginning and 199.8 MB in the end (delta: -17.6 MB). Peak memory consumption was 111.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...