/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 06:52:51,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 06:52:51,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 06:52:51,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 06:52:51,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-14 06:52:51,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-14 06:52:51,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-14 06:52:51,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-14 06:52:51,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-14 06:52:51,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-14 06:52:51,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-14 06:52:51,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-14 06:52:51,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-14 06:52:51,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-14 06:52:51,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-14 06:52:51,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-14 06:52:51,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-14 06:52:51,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-14 06:52:51,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-14 06:52:51,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-14 06:52:51,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-14 06:52:51,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-14 06:52:51,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-14 06:52:51,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-14 06:52:51,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-14 06:52:51,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-14 06:52:51,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-14 06:52:51,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-14 06:52:51,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Lockstep.epf [2021-07-14 06:52:51,783 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 06:52:51,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 06:52:51,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 06:52:51,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 06:52:51,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 06:52:51,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 06:52:51,785 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 06:52:51,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 06:52:51,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 06:52:51,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 06:52:51,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 06:52:51,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 06:52:51,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 06:52:51,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 06:52:51,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 06:52:51,786 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 06:52:51,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 06:52:51,786 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 06:52:51,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 06:52:51,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 06:52:51,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 06:52:51,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 06:52:51,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 06:52:51,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 06:52:51,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 06:52:51,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 06:52:51,795 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 06:52:51,795 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 06:52:51,795 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 06:52:51,795 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 06:52:51,796 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 06:52:51,796 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 06:52:51,796 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 06:52:51,796 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-14 06:52:51,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 06:52:52,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 06:52:52,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 06:52:52,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 06:52:52,065 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 06:52:52,066 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 06:52:52,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl [2021-07-14 06:52:52,067 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl' [2021-07-14 06:52:52,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 06:52:52,096 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 06:52:52,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 06:52:52,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 06:52:52,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 06:52:52,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 06:52:52,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 06:52:52,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 06:52:52,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 06:52:52,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,136 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... [2021-07-14 06:52:52,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 06:52:52,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 06:52:52,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 06:52:52,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 06:52:52,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 06:52:52,188 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 06:52:52,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 06:52:52,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 06:52:52,188 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 06:52:52,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 06:52:52,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 06:52:52,189 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 06:52:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 06:52:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 06:52:52,190 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 06:52:52,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 06:52:52,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 06:52:52,191 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-14 06:52:52,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-14 06:52:52,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-14 06:52:52,192 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 06:52:52,377 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 06:52:52,377 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 06:52:52,379 INFO L202 PluginConnector]: Adding new model buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:52:52 BoogieIcfgContainer [2021-07-14 06:52:52,379 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 06:52:52,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 06:52:52,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 06:52:52,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 06:52:52,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:52:52" (1/2) ... [2021-07-14 06:52:52,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39daf638 and model type buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:52:52, skipping insertion in model container [2021-07-14 06:52:52,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:52:52" (2/2) ... [2021-07-14 06:52:52,384 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-mult-alt.wvr.bpl [2021-07-14 06:52:52,387 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 06:52:52,387 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 06:52:52,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 06:52:52,388 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 06:52:52,427 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-14 06:52:52,456 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 06:52:52,491 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 06:52:52,491 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 06:52:52,491 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 06:52:52,492 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 06:52:52,492 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 06:52:52,492 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 06:52:52,492 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 06:52:52,492 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 06:52:52,698 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:52:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:52:52,706 INFO L82 PathProgramCache]: Analyzing trace with hash 747871516, now seen corresponding path program 1 times [2021-07-14 06:52:52,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:52:52,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142216199] [2021-07-14 06:52:52,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:52:52,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:52:52,871 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-07-14 06:52:52,872 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:52:52,872 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142216199] [2021-07-14 06:52:52,872 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142216199] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 06:52:52,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 06:52:52,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 06:52:52,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91574928] [2021-07-14 06:52:52,876 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 06:52:52,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:52:52,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 06:52:52,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 06:52:52,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:52,886 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:52:52,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:52:52,887 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:52,935 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-14 06:52:52,935 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:52:52,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:52:52,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1421409262, now seen corresponding path program 2 times [2021-07-14 06:52:52,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:52:52,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612533722] [2021-07-14 06:52:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:52:52,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:52:52,984 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-07-14 06:52:52,984 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:52:52,984 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612533722] [2021-07-14 06:52:52,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612533722] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 06:52:52,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 06:52:52,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 06:52:52,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871036619] [2021-07-14 06:52:52,985 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 06:52:52,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:52:52,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 06:52:52,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 06:52:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:52,986 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:52:52,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:52:52,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:52,987 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,038 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-14 06:52:53,038 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:52:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:52:53,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1470279104, now seen corresponding path program 3 times [2021-07-14 06:52:53,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:52:53,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443460635] [2021-07-14 06:52:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:52:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:52:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-07-14 06:52:53,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:52:53,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443460635] [2021-07-14 06:52:53,147 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443460635] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:52:53,147 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240739936] [2021-07-14 06:52:53,147 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:52:53,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-14 06:52:53,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:52:53,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-14 06:52:53,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:52:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-07-14 06:52:53,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240739936] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 06:52:53,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-14 06:52:53,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2021-07-14 06:52:53,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322395844] [2021-07-14 06:52:53,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-14 06:52:53,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:52:53,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-14 06:52:53,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-07-14 06:52:53,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:53,405 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:52:53,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:52:53,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,406 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:52:53,659 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:52:53,660 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:52:53,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:52:53,660 INFO L82 PathProgramCache]: Analyzing trace with hash 557066402, now seen corresponding path program 4 times [2021-07-14 06:52:53,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:52:53,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756903507] [2021-07-14 06:52:53,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:52:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:52:53,685 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-07-14 06:52:53,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:52:53,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756903507] [2021-07-14 06:52:53,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756903507] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-14 06:52:53,685 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-14 06:52:53,685 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-14 06:52:53,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455286299] [2021-07-14 06:52:53,686 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-14 06:52:53,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:52:53,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-14 06:52:53,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-14 06:52:53,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:53,686 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:52:53,686 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:52:53,686 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:52:53,687 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:52:53,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,708 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-14 06:52:53,708 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:52:53,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:52:53,708 INFO L82 PathProgramCache]: Analyzing trace with hash -339212576, now seen corresponding path program 5 times [2021-07-14 06:52:53,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:52:53,708 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419643768] [2021-07-14 06:52:53,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:52:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:52:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-07-14 06:52:53,797 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:52:53,797 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419643768] [2021-07-14 06:52:53,797 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419643768] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:52:53,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767574961] [2021-07-14 06:52:53,798 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:52:53,852 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-07-14 06:52:53,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:52:53,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-14 06:52:53,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:52:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-07-14 06:52:53,957 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767574961] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:52:53,957 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:52:53,957 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2021-07-14 06:52:53,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066059418] [2021-07-14 06:52:53,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-14 06:52:53,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:52:53,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-14 06:52:53,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-07-14 06:52:53,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:53,959 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:52:53,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:52:53,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:52:53,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:52:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-14 06:52:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-14 06:52:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:52:54,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:52:54,214 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:52:54,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:52:54,214 INFO L82 PathProgramCache]: Analyzing trace with hash -947748160, now seen corresponding path program 6 times [2021-07-14 06:52:54,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:52:54,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908271647] [2021-07-14 06:52:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:52:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:52:54,558 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:52:54,558 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:52:54,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908271647] [2021-07-14 06:52:54,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908271647] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:52:54,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788577667] [2021-07-14 06:52:54,559 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:52:54,622 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-07-14 06:52:54,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:52:54,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 30 conjunts are in the unsatisfiable core [2021-07-14 06:52:54,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:52:55,121 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-07-14 06:52:55,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 24 [2021-07-14 06:52:55,123 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 06:52:55,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 06:52:55,137 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2021-07-14 06:52:55,137 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:59, output treesize:39 [2021-07-14 06:52:55,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-07-14 06:52:55,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-14 06:52:55,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 06:52:55,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 99 treesize of output 105 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown