/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/buffer-mult-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 06:27:45,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 06:27:45,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 06:27:45,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 06:27:46,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-10 06:27:46,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-10 06:27:46,009 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-10 06:27:46,012 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-10 06:27:46,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-10 06:27:46,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-10 06:27:46,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-10 06:27:46,018 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-10 06:27:46,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-10 06:27:46,021 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-10 06:27:46,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-10 06:27:46,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-10 06:27:46,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-10 06:27:46,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-10 06:27:46,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-10 06:27:46,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-10 06:27:46,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-10 06:27:46,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-07-10 06:27:46,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-10 06:27:46,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-10 06:27:46,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-10 06:27:46,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistent-NoLbe.epf [2021-07-10 06:27:46,057 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 06:27:46,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 06:27:46,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 06:27:46,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 06:27:46,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 06:27:46,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 06:27:46,059 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 06:27:46,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 06:27:46,059 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 06:27:46,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 06:27:46,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 06:27:46,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 06:27:46,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 06:27:46,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 06:27:46,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 06:27:46,061 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 06:27:46,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 06:27:46,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 06:27:46,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 06:27:46,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 06:27:46,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 06:27:46,061 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 06:27:46,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 06:27:46,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 06:27:46,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 06:27:46,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 06:27:46,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 06:27:46,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 06:27:46,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 06:27:46,071 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 06:27:46,072 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 06:27:46,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 06:27:46,072 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES [2021-07-10 06:27:46,072 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 06:27:46,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 06:27:46,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 06:27:46,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 06:27:46,322 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 06:27:46,325 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 06:27:46,325 INFO L432 ainManager$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 [2021-07-10 06:27:46,325 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' [2021-07-10 06:27:46,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 06:27:46,345 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 06:27:46,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 06:27:46,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 06:27:46,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 06:27:46,353 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,359 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 06:27:46,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 06:27:46,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 06:27:46,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 06:27:46,370 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,370 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,371 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,371 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,373 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,375 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,375 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 10.07 06:27:46" (1/1) ... [2021-07-10 06:27:46,376 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 06:27:46,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 06:27:46,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 06:27:46,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 06:27:46,377 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:27:46" (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 06:27:46,420 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 06:27:46,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 06:27:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 06:27:46,421 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 06:27:46,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 06:27:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 06:27:46,421 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 06:27:46,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 06:27:46,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 06:27:46,421 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 06:27:46,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 06:27:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 06:27:46,422 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-10 06:27:46,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-10 06:27:46,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-10 06:27:46,423 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 06:27:46,649 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 06:27:46,649 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-10 06:27:46,651 INFO L202 PluginConnector]: Adding new model buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 06:27:46 BoogieIcfgContainer [2021-07-10 06:27:46,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 06:27:46,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 06:27:46,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 06:27:46,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 06:27:46,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 06:27:46" (1/2) ... [2021-07-10 06:27:46,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0eacff and model type buffer-mult-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 06:27:46, skipping insertion in model container [2021-07-10 06:27:46,655 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 10.07 06:27:46" (2/2) ... [2021-07-10 06:27:46,655 INFO L111 eAbstractionObserver]: Analyzing ICFG buffer-mult-alt.wvr.bpl [2021-07-10 06:27:46,667 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 06:27:46,668 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 06:27:46,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 06:27:46,668 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 06:27:46,727 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-10 06:27:46,741 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 [2021-07-10 06:27:46,778 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 06:27:46,778 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 06:27:46,778 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 06:27:46,778 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 06:27:46,778 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 06:27:46,778 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 06:27:46,778 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 06:27:46,778 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 06:27:46,933 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:27:46,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:27:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2105200412, now seen corresponding path program 1 times [2021-07-10 06:27:46,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:27:46,944 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866859422] [2021-07-10 06:27:46,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:27:46,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 06:27:47,060 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:27:47,060 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866859422] [2021-07-10 06:27:47,061 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866859422] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 06:27:47,061 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 06:27:47,061 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-10 06:27:47,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263701763] [2021-07-10 06:27:47,064 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-10 06:27:47,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:27:47,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-10 06:27:47,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-10 06:27:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:47,072 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:27:47,074 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 06:27:47,074 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:47,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:47,112 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 06:27:47,112 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:27:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:27:47,116 INFO L82 PathProgramCache]: Analyzing trace with hash -119195625, now seen corresponding path program 2 times [2021-07-10 06:27:47,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:27:47,116 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759805375] [2021-07-10 06:27:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:27:47,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:47,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 06:27:47,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:27:47,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759805375] [2021-07-10 06:27:47,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759805375] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:47,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254292544] [2021-07-10 06:27:47,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:47,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 06:27:47,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 06:27:47,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-10 06:27:47,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:27:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-10 06:27:47,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254292544] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:47,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 06:27:47,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-07-10 06:27:47,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841763651] [2021-07-10 06:27:47,355 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-10 06:27:47,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:27:47,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-10 06:27:47,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-10 06:27:47,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:47,369 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:27:47,369 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 5.625) internal successors, (45), 7 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) [2021-07-10 06:27:47,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:47,369 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:47,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:47,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:47,706 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:27:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:27:47,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1050717443, now seen corresponding path program 1 times [2021-07-10 06:27:47,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:27:47,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619497908] [2021-07-10 06:27:47,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:27:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 06:27:47,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:27:47,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619497908] [2021-07-10 06:27:47,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619497908] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:47,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106249890] [2021-07-10 06:27:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 06:27:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:47,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-07-10 06:27:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:27:47,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-07-10 06:27:47,808 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106249890] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 06:27:47,808 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-10 06:27:47,808 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-07-10 06:27:47,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108082988] [2021-07-10 06:27:47,808 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 06:27:47,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:27:47,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 06:27:47,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-07-10 06:27:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:47,809 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:27:47,809 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 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 06:27:47,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:47,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:47,809 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:47,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 06:27:48,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:48,033 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:27:48,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:27:48,033 INFO L82 PathProgramCache]: Analyzing trace with hash 2020524933, now seen corresponding path program 3 times [2021-07-10 06:27:48,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:27:48,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759136983] [2021-07-10 06:27:48,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:27:48,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 06:27:48,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:27:48,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759136983] [2021-07-10 06:27:48,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759136983] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:48,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198898149] [2021-07-10 06:27:48,073 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 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 06:27:48,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-07-10 06:27:48,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 06:27:48,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-10 06:27:48,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:27:48,156 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-10 06:27:48,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198898149] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 06:27:48,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-07-10 06:27:48,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2021-07-10 06:27:48,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983145786] [2021-07-10 06:27:48,157 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-10 06:27:48,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:27:48,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-10 06:27:48,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-10 06:27:48,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:48,157 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:27:48,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 4 states have internal predecessors, (30), 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 06:27:48,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:48,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:48,157 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 06:27:48,158 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 06:27:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 06:27:48,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:48,397 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:27:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:27:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1296067977, now seen corresponding path program 1 times [2021-07-10 06:27:48,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:27:48,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659871332] [2021-07-10 06:27:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:27:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:27:48,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:27:48,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659871332] [2021-07-10 06:27:48,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659871332] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:48,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467567178] [2021-07-10 06:27:48,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:48,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 33 conjunts are in the unsatisfiable core [2021-07-10 06:27:48,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:27:48,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-07-10 06:27:48,844 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 06:27:48,847 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 06:27:48,848 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 06:27:48,848 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2021-07-10 06:27:49,201 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-07-10 06:27:49,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 37 [2021-07-10 06:27:49,206 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-10 06:27:49,207 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 06:27:49,208 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 06:27:49,208 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:93, output treesize:3 [2021-07-10 06:27:49,230 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 1 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:27:49,231 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467567178] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:49,231 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 06:27:49,231 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-07-10 06:27:49,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072834329] [2021-07-10 06:27:49,231 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-07-10 06:27:49,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:27:49,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-07-10 06:27:49,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2021-07-10 06:27:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:49,233 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:27:49,233 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 22 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-10 06:27:49,233 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:49,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:49,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 06:27:49,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 06:27:49,234 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 06:27:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 06:27:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:49,625 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:49,625 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:27:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:27:49,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1167769589, now seen corresponding path program 2 times [2021-07-10 06:27:49,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:27:49,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63882976] [2021-07-10 06:27:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:27:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-10 06:27:49,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:27:49,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63882976] [2021-07-10 06:27:49,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63882976] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:49,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555532883] [2021-07-10 06:27:49,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:49,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-10 06:27:49,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 06:27:49,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-10 06:27:49,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:27:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-07-10 06:27:49,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555532883] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:49,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 06:27:49,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2021-07-10 06:27:49,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501946256] [2021-07-10 06:27:49,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-10 06:27:49,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 06:27:49,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-10 06:27:49,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-07-10 06:27:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:49,773 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 06:27:49,773 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 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) [2021-07-10 06:27:49,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:49,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:49,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 06:27:49,773 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-10 06:27:49,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:49,774 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 06:27:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-10 06:27:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 06:27:49,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-10 06:27:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-10 06:27:49,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-10 06:27:50,031 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:50,031 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-10 06:27:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 06:27:50,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1169423654, now seen corresponding path program 3 times [2021-07-10 06:27:50,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 06:27:50,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701938894] [2021-07-10 06:27:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 06:27:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 06:27:50,321 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 06:27:50,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 06:27:50,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701938894] [2021-07-10 06:27:50,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701938894] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 06:27:50,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458937020] [2021-07-10 06:27:50,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 06:27:50,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-07-10 06:27:50,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-10 06:27:50,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 41 conjunts are in the unsatisfiable core [2021-07-10 06:27:50,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 06:27:50,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:50,517 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 06:27:50,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 36 [2021-07-10 06:27:50,555 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2021-07-10 06:27:50,577 INFO L628 ElimStorePlain]: treesize reduction 14, result has 72.0 percent of original size [2021-07-10 06:27:50,583 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-10 06:27:50,584 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:44, output treesize:35 [2021-07-10 06:27:51,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,043 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-10 06:27:51,077 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-10 06:27:51,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 181 treesize of output 193 [2021-07-10 06:27:52,855 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 1677 DAG size of output: 1670 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown