/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 17:42:20,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 17:42:20,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 17:42:20,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 17:42:20,391 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-FA-NoLbe.epf [2021-07-09 17:42:20,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 17:42:20,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 17:42:20,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 17:42:20,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 17:42:20,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 17:42:20,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 17:42:20,428 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 17:42:20,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 17:42:20,428 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 17:42:20,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 17:42:20,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 17:42:20,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 17:42:20,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 17:42:20,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 17:42:20,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 17:42:20,429 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 17:42:20,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 17:42:20,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 17:42:20,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 17:42:20,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 17:42:20,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 17:42:20,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 17:42:20,430 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 17:42:20,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 17:42:20,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 17:42:20,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 17:42:20,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 17:42:20,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 17:42:20,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 17:42:20,431 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 17:42:20,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 17:42:20,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 17:42:20,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 17:42:20,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 17:42:20,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 17:42:20,750 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 17:42:20,751 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 17:42:20,752 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl [2021-07-09 17:42:20,752 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2021-07-09 17:42:20,791 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 17:42:20,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 17:42:20,793 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 17:42:20,793 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 17:42:20,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 17:42:20,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 17:42:20,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 17:42:20,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 17:42:20,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 17:42:20,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/1) ... [2021-07-09 17:42:20,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 17:42:20,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 17:42:20,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 17:42:20,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 17:42:20,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (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 [2021-07-09 17:42:20,902 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 17:42:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 17:42:20,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 17:42:20,902 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 17:42:20,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 17:42:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 17:42:20,903 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 17:42:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 17:42:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 17:42:20,903 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 17:42:20,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 17:42:20,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 17:42:20,904 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-09 17:42:20,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-09 17:42:20,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-09 17:42:20,905 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 17:42:21,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 17:42:21,114 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 17:42:21,115 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:42:21 BoogieIcfgContainer [2021-07-09 17:42:21,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 17:42:21,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 17:42:21,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 17:42:21,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 17:42:21,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 05:42:20" (1/2) ... [2021-07-09 17:42:21,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2e276e and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 05:42:21, skipping insertion in model container [2021-07-09 17:42:21,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 05:42:21" (2/2) ... [2021-07-09 17:42:21,122 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2021-07-09 17:42:21,127 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 17:42:21,127 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 17:42:21,127 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 17:42:21,127 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 17:42:21,196 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-07-09 17:42:21,215 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-07-09 17:42:21,230 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 17:42:21,230 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 17:42:21,230 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 17:42:21,230 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 17:42:21,230 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 17:42:21,230 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 17:42:21,230 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 17:42:21,231 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 17:42:21,241 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 81 transitions, 194 flow [2021-07-09 17:42:24,388 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93964 states, 93963 states have (on average 3.7646626863765524) internal successors, (353739), 93963 states have internal predecessors, (353739), 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) [2021-07-09 17:42:24,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 93964 states, 93963 states have (on average 3.7646626863765524) internal successors, (353739), 93963 states have internal predecessors, (353739), 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) [2021-07-09 17:42:25,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 17:42:25,430 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:25,430 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:25,431 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:25,438 INFO L82 PathProgramCache]: Analyzing trace with hash -193423049, now seen corresponding path program 1 times [2021-07-09 17:42:25,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:25,445 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678063372] [2021-07-09 17:42:25,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:25,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:25,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:25,649 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678063372] [2021-07-09 17:42:25,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678063372] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:25,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:25,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:42:25,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238670914] [2021-07-09 17:42:25,655 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:42:25,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:25,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:42:25,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:42:25,843 INFO L87 Difference]: Start difference. First operand has 93964 states, 93963 states have (on average 3.7646626863765524) internal successors, (353739), 93963 states have internal predecessors, (353739), 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) Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-07-09 17:42:27,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:27,117 INFO L93 Difference]: Finished difference Result 93964 states and 349229 transitions. [2021-07-09 17:42:27,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:42:27,119 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) Word has length 75 [2021-07-09 17:42:27,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:27,980 INFO L225 Difference]: With dead ends: 93964 [2021-07-09 17:42:27,981 INFO L226 Difference]: Without dead ends: 93964 [2021-07-09 17:42:27,982 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:42:38,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-07-09 17:42:40,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-07-09 17:42:41,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93964 states, 93963 states have (on average 3.7166650702936264) internal successors, (349229), 93963 states have internal predecessors, (349229), 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) [2021-07-09 17:42:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 349229 transitions. [2021-07-09 17:42:41,944 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 349229 transitions. Word has length 75 [2021-07-09 17:42:41,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:41,945 INFO L482 AbstractCegarLoop]: Abstraction has 93964 states and 349229 transitions. [2021-07-09 17:42:41,946 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-07-09 17:42:41,946 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 349229 transitions. [2021-07-09 17:42:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 17:42:42,263 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:42,264 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:42,264 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 17:42:42,264 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:42,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:42,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1438705545, now seen corresponding path program 2 times [2021-07-09 17:42:42,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:42,266 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628185533] [2021-07-09 17:42:42,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:42,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:42,643 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628185533] [2021-07-09 17:42:42,643 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628185533] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:42,643 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:42,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-09 17:42:42,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293363122] [2021-07-09 17:42:42,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 17:42:42,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:42,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 17:42:42,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:42:42,646 INFO L87 Difference]: Start difference. First operand 93964 states and 349229 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-07-09 17:42:43,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:42:43,579 INFO L93 Difference]: Finished difference Result 93964 states and 344549 transitions. [2021-07-09 17:42:43,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 17:42:43,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) Word has length 75 [2021-07-09 17:42:43,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:42:44,068 INFO L225 Difference]: With dead ends: 93964 [2021-07-09 17:42:44,068 INFO L226 Difference]: Without dead ends: 93964 [2021-07-09 17:42:44,069 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 17:42:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-07-09 17:42:56,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-07-09 17:42:56,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93964 states, 93963 states have (on average 3.666858231431521) internal successors, (344549), 93963 states have internal predecessors, (344549), 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) [2021-07-09 17:42:57,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 344549 transitions. [2021-07-09 17:42:57,124 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 344549 transitions. Word has length 75 [2021-07-09 17:42:57,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:42:57,125 INFO L482 AbstractCegarLoop]: Abstraction has 93964 states and 344549 transitions. [2021-07-09 17:42:57,125 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2021-07-09 17:42:57,126 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 344549 transitions. [2021-07-09 17:42:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 17:42:57,360 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:42:57,361 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:42:57,361 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 17:42:57,361 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:42:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:42:57,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1794567367, now seen corresponding path program 3 times [2021-07-09 17:42:57,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:42:57,362 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047000347] [2021-07-09 17:42:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:42:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:42:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:42:57,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:42:57,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047000347] [2021-07-09 17:42:57,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047000347] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:42:57,770 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:42:57,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-07-09 17:42:57,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407817212] [2021-07-09 17:42:57,771 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-07-09 17:42:57,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:42:57,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-07-09 17:42:57,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-07-09 17:42:57,772 INFO L87 Difference]: Start difference. First operand 93964 states and 344549 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 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) [2021-07-09 17:43:03,192 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 12 [2021-07-09 17:43:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:43:05,839 INFO L93 Difference]: Finished difference Result 340122 states and 1265099 transitions. [2021-07-09 17:43:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-07-09 17:43:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 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) Word has length 75 [2021-07-09 17:43:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:43:08,156 INFO L225 Difference]: With dead ends: 340122 [2021-07-09 17:43:08,159 INFO L226 Difference]: Without dead ends: 340122 [2021-07-09 17:43:08,160 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1854 ImplicationChecksByTransitivity, 2639.2ms TimeCoverageRelationStatistics Valid=1118, Invalid=4734, Unknown=0, NotChecked=0, Total=5852 [2021-07-09 17:43:31,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340122 states. [2021-07-09 17:43:38,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340122 to 139145. [2021-07-09 17:43:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139145 states, 139144 states have (on average 3.6789297418501694) internal successors, (511901), 139144 states have internal predecessors, (511901), 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) [2021-07-09 17:43:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139145 states to 139145 states and 511901 transitions. [2021-07-09 17:43:39,830 INFO L78 Accepts]: Start accepts. Automaton has 139145 states and 511901 transitions. Word has length 75 [2021-07-09 17:43:39,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:43:39,832 INFO L482 AbstractCegarLoop]: Abstraction has 139145 states and 511901 transitions. [2021-07-09 17:43:39,837 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 13 states have internal predecessors, (75), 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) [2021-07-09 17:43:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 139145 states and 511901 transitions. [2021-07-09 17:43:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-07-09 17:43:40,258 INFO L500 BasicCegarLoop]: Found error trace [2021-07-09 17:43:40,258 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-09 17:43:40,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-09 17:43:40,259 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 17:43:40,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 17:43:40,259 INFO L82 PathProgramCache]: Analyzing trace with hash 606677721, now seen corresponding path program 4 times [2021-07-09 17:43:40,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 17:43:40,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569456672] [2021-07-09 17:43:40,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 17:43:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 17:43:40,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 17:43:40,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 17:43:40,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569456672] [2021-07-09 17:43:40,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569456672] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 17:43:40,645 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 17:43:40,645 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-07-09 17:43:40,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371322572] [2021-07-09 17:43:40,646 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-07-09 17:43:40,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 17:43:40,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-07-09 17:43:40,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-07-09 17:43:40,647 INFO L87 Difference]: Start difference. First operand 139145 states and 511901 transitions. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 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) [2021-07-09 17:43:47,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-09 17:43:47,471 INFO L93 Difference]: Finished difference Result 435572 states and 1603671 transitions. [2021-07-09 17:43:47,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-07-09 17:43:47,486 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 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) Word has length 75 [2021-07-09 17:43:47,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-09 17:43:50,441 INFO L225 Difference]: With dead ends: 435572 [2021-07-09 17:43:50,442 INFO L226 Difference]: Without dead ends: 428292 [2021-07-09 17:43:50,442 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 1135.1ms TimeCoverageRelationStatistics Valid=454, Invalid=1898, Unknown=0, NotChecked=0, Total=2352 [2021-07-09 17:44:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428292 states. [2021-07-09 17:44:27,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428292 to 217073. [2021-07-09 17:44:28,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217073 states, 217072 states have (on average 3.6853532468489716) internal successors, (799987), 217072 states have internal predecessors, (799987), 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) [2021-07-09 17:44:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217073 states to 217073 states and 799987 transitions. [2021-07-09 17:44:30,867 INFO L78 Accepts]: Start accepts. Automaton has 217073 states and 799987 transitions. Word has length 75 [2021-07-09 17:44:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-09 17:44:30,868 INFO L482 AbstractCegarLoop]: Abstraction has 217073 states and 799987 transitions. [2021-07-09 17:44:30,869 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 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) [2021-07-09 17:44:30,869 INFO L276 IsEmpty]: Start isEmpty. Operand 217073 states and 799987 transitions.