/usr/bin/java -Xmx16000000000 -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-DelaySleep-NoLbe-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-07 03:11:04,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-07 03:11:04,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-07 03:11:04,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-07 03:11:04,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-DelaySleep-NoLbe-Random7777.epf [2021-06-07 03:11:04,477 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-07 03:11:04,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-07 03:11:04,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-07 03:11:04,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-07 03:11:04,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-07 03:11:04,480 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-07 03:11:04,480 INFO L138 SettingsManager]: * Use SBE=true [2021-06-07 03:11:04,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-07 03:11:04,480 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-07 03:11:04,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-07 03:11:04,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-07 03:11:04,481 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-07 03:11:04,481 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-07 03:11:04,482 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-07 03:11:04,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-07 03:11:04,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 03:11:04,482 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-07 03:11:04,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-07 03:11:04,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-07 03:11:04,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-07 03:11:04,482 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-07 03:11:04,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-07 03:11:04,483 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-07 03:11:04,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-07 03:11:04,483 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-07 03:11:04,483 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-07 03:11:04,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-07 03:11:04,483 INFO L138 SettingsManager]: * Random seed used by POR DFS order=7777 WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-07 03:11:04,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-07 03:11:04,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-07 03:11:04,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-07 03:11:04,737 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-07 03:11:04,738 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-07 03:11:04,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl [2021-06-07 03:11:04,739 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-06-07 03:11:04,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-07 03:11:04,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-07 03:11:04,756 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-07 03:11:04,756 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-07 03:11:04,756 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-07 03:11:04,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-07 03:11:04,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-07 03:11:04,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-07 03:11:04,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-07 03:11:04,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... [2021-06-07 03:11:04,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-07 03:11:04,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-07 03:11:04,789 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-07 03:11:04,789 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-07 03:11:04,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 03:11:04,842 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-07 03:11:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-07 03:11:04,842 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-07 03:11:04,842 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-07 03:11:04,842 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-07 03:11:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-07 03:11:04,843 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-07 03:11:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-07 03:11:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-07 03:11:04,843 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-07 03:11:04,843 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-07 03:11:04,843 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-07 03:11:04,844 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-07 03:11:05,022 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-07 03:11:05,022 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-07 03:11:05,023 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 03:11:05 BoogieIcfgContainer [2021-06-07 03:11:05,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-07 03:11:05,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-07 03:11:05,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-07 03:11:05,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-07 03:11:05,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:11:04" (1/2) ... [2021-06-07 03:11:05,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7dac7f and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 03:11:05, skipping insertion in model container [2021-06-07 03:11:05,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 03:11:05" (2/2) ... [2021-06-07 03:11:05,028 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-06-07 03:11:05,031 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-07 03:11:05,031 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-07 03:11:05,031 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-07 03:11:05,032 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-07 03:11:05,075 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-07 03:11:05,095 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-07 03:11:05,165 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-07 03:11:05,165 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-07 03:11:05,165 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-07 03:11:05,165 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-07 03:11:05,165 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-07 03:11:05,165 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-07 03:11:05,165 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-07 03:11:05,165 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-07 03:11:05,210 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 03:11:05,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 03:11:05,213 INFO L82 PathProgramCache]: Analyzing trace with hash -842611142, now seen corresponding path program 1 times [2021-06-07 03:11:05,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 03:11:05,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521246382] [2021-06-07 03:11:05,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 03:11:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 03:11:05,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:05,304 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 03:11:05,304 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521246382] [2021-06-07 03:11:05,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521246382] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-07 03:11:05,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-07 03:11:05,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-07 03:11:05,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153950099] [2021-06-07 03:11:05,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-07 03:11:05,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 03:11:05,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-07 03:11:05,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-07 03:11:05,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:05,323 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 03:11:05,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 03:11:05,327 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:05,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:05,399 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-07 03:11:05,399 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 03:11:05,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 03:11:05,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1660647424, now seen corresponding path program 1 times [2021-06-07 03:11:05,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 03:11:05,401 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776181191] [2021-06-07 03:11:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 03:11:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 03:11:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:05,437 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 03:11:05,437 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776181191] [2021-06-07 03:11:05,437 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776181191] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:05,438 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879852178] [2021-06-07 03:11:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 03:11:05,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-07 03:11:05,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 03:11:05,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:05,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879852178] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:05,576 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 03:11:05,577 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-06-07 03:11:05,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585812349] [2021-06-07 03:11:05,578 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-07 03:11:05,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 03:11:05,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-07 03:11:05,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-07 03:11:05,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:05,585 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 03:11:05,585 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 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) [2021-06-07 03:11:05,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:05,585 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:05,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:05,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:05,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:05,851 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 03:11:05,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 03:11:05,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1347577040, now seen corresponding path program 2 times [2021-06-07 03:11:05,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 03:11:05,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786232706] [2021-06-07 03:11:05,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 03:11:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 03:11:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:05,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 03:11:05,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786232706] [2021-06-07 03:11:05,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786232706] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:05,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323482420] [2021-06-07 03:11:05,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:05,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 03:11:05,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 03:11:05,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-07 03:11:05,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 03:11:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:06,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323482420] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:06,072 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 03:11:06,072 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-06-07 03:11:06,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835679881] [2021-06-07 03:11:06,072 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-07 03:11:06,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 03:11:06,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-07 03:11:06,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-07 03:11:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:06,073 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 03:11:06,073 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 03:11:06,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:06,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:06,073 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:06,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:06,343 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:06,343 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 03:11:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 03:11:06,344 INFO L82 PathProgramCache]: Analyzing trace with hash -18879620, now seen corresponding path program 3 times [2021-06-07 03:11:06,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 03:11:06,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666898148] [2021-06-07 03:11:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 03:11:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 03:11:06,395 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:06,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 03:11:06,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666898148] [2021-06-07 03:11:06,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666898148] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:06,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887800062] [2021-06-07 03:11:06,396 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 [2021-06-07 03:11:06,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-07 03:11:06,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 03:11:06,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-07 03:11:06,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 03:11:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:06,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887800062] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:06,574 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 03:11:06,574 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-06-07 03:11:06,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864991406] [2021-06-07 03:11:06,574 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-07 03:11:06,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 03:11:06,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-07 03:11:06,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-06-07 03:11:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:06,575 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 03:11:06,575 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 03:11:06,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:06,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:06,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:06,575 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:06,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:06,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 03:11:06,885 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:06,885 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 03:11:06,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 03:11:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash 636674220, now seen corresponding path program 4 times [2021-06-07 03:11:06,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 03:11:06,886 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679891097] [2021-06-07 03:11:06,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 03:11:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 03:11:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:06,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 03:11:06,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679891097] [2021-06-07 03:11:06,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679891097] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:06,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546965288] [2021-06-07 03:11:06,964 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:06,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-07 03:11:06,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 03:11:06,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-07 03:11:06,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 03:11:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:07,177 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546965288] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:07,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 03:11:07,178 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-07 03:11:07,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595757818] [2021-06-07 03:11:07,178 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-07 03:11:07,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 03:11:07,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-07 03:11:07,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-06-07 03:11:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:07,180 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 03:11:07,180 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 03:11:07,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:07,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:07,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:07,180 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-07 03:11:07,181 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:07,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 03:11:07,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-07 03:11:07,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-06-07 03:11:07,621 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 03:11:07,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 03:11:07,621 INFO L82 PathProgramCache]: Analyzing trace with hash 336812148, now seen corresponding path program 5 times [2021-06-07 03:11:07,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 03:11:07,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095581094] [2021-06-07 03:11:07,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 03:11:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 03:11:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:07,875 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 03:11:07,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095581094] [2021-06-07 03:11:07,875 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095581094] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:07,875 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752759016] [2021-06-07 03:11:07,875 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-06-07 03:11:07,915 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-06-07 03:11:07,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:07,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-07 03:11:07,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 03:11:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 1 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:08,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752759016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:08,233 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 03:11:08,233 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-06-07 03:11:08,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468629839] [2021-06-07 03:11:08,234 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-07 03:11:08,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 03:11:08,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-07 03:11:08,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-06-07 03:11:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:08,235 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 03:11:08,235 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 18 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 03:11:08,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:08,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:08,235 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:08,236 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-07 03:11:08,236 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-07 03:11:08,236 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:08,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 03:11:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-07 03:11:08,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-07 03:11:08,818 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-07 03:11:08,819 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 03:11:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 03:11:08,819 INFO L82 PathProgramCache]: Analyzing trace with hash 2016673056, now seen corresponding path program 6 times [2021-06-07 03:11:08,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 03:11:08,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634943320] [2021-06-07 03:11:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 03:11:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 03:11:09,507 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 20 [2021-06-07 03:11:10,094 WARN L205 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 15 [2021-06-07 03:11:10,648 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 9 [2021-06-07 03:11:10,785 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 1 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:10,785 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 03:11:10,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634943320] [2021-06-07 03:11:10,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634943320] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:10,785 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929047364] [2021-06-07 03:11:10,785 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:10,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-06-07 03:11:10,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 03:11:10,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-07 03:11:10,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 03:11:11,294 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 03:11:11,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929047364] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 03:11:11,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 03:11:11,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-06-07 03:11:11,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099475705] [2021-06-07 03:11:11,295 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-07 03:11:11,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 03:11:11,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-07 03:11:11,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2021-06-07 03:11:11,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:11,296 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 03:11:11,296 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 24 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-07 03:11:11,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:11,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:11,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:11,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-06-07 03:11:11,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-06-07 03:11:11,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-07 03:11:11,296 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 03:11:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-07 03:11:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-07 03:11:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-07 03:11:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-07 03:11:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-07 03:11:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-07 03:11:12,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-07 03:11:12,203 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 03:11:12,203 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-07 03:11:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 03:11:12,204 INFO L82 PathProgramCache]: Analyzing trace with hash -456078748, now seen corresponding path program 7 times [2021-06-07 03:11:12,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 03:11:12,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673143739] [2021-06-07 03:11:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 03:11:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown