/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 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-12 19:17:00,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-12 19:17:00,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-12 19:17:00,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-12 19:17:00,155 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 [2021-08-12 19:17:00,177 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-12 19:17:00,177 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-12 19:17:00,178 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-12 19:17:00,178 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-12 19:17:00,180 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-12 19:17:00,180 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-12 19:17:00,180 INFO L138 SettingsManager]: * Use SBE=true [2021-08-12 19:17:00,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-12 19:17:00,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-12 19:17:00,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-12 19:17:00,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-12 19:17:00,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-12 19:17:00,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-12 19:17:00,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-12 19:17:00,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-12 19:17:00,181 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-12 19:17:00,181 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-12 19:17:00,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-12 19:17:00,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-12 19:17:00,182 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-12 19:17:00,183 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-12 19:17:00,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-12 19:17:00,450 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-12 19:17:00,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-12 19:17:00,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-12 19:17:00,471 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-12 19:17:00,472 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-12 19:17:00,473 INFO L432 ainManager$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 [2021-08-12 19:17:00,473 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/bakery-4.wvr.bpl' [2021-08-12 19:17:00,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-12 19:17:00,510 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-12 19:17:00,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-12 19:17:00,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-12 19:17:00,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-12 19:17:00,520 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 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,526 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 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-12 19:17:00,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-12 19:17:00,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-12 19:17:00,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-12 19:17:00,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (1/1) ... [2021-08-12 19:17:00,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-12 19:17:00,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-12 19:17:00,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-12 19:17:00,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-12 19:17:00,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (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 [2021-08-12 19:17:00,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-12 19:17:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-12 19:17:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-12 19:17:00,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-12 19:17:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-12 19:17:00,599 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-12 19:17:00,599 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-12 19:17:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-12 19:17:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-12 19:17:00,600 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-08-12 19:17:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-08-12 19:17:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-08-12 19:17:00,600 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-08-12 19:17:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-08-12 19:17:00,600 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-08-12 19:17:00,601 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-12 19:17:00,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-12 19:17:00,767 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-12 19:17:00,768 INFO L202 PluginConnector]: Adding new model bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:17:00 BoogieIcfgContainer [2021-08-12 19:17:00,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-12 19:17:00,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-12 19:17:00,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-12 19:17:00,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-12 19:17:00,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.08 07:17:00" (1/2) ... [2021-08-12 19:17:00,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32365ec5 and model type bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.08 07:17:00, skipping insertion in model container [2021-08-12 19:17:00,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bakery-4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.08 07:17:00" (2/2) ... [2021-08-12 19:17:00,772 INFO L111 eAbstractionObserver]: Analyzing ICFG bakery-4.wvr.bpl [2021-08-12 19:17:00,776 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-12 19:17:00,776 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-12 19:17:00,776 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-12 19:17:00,856 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-08-12 19:17:00,869 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-08-12 19:17:00,893 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-12 19:17:00,893 INFO L379 AbstractCegarLoop]: Hoare is true [2021-08-12 19:17:00,893 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-12 19:17:00,893 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-12 19:17:00,893 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-12 19:17:00,894 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-12 19:17:00,894 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-12 19:17:00,894 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-12 19:17:00,916 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 94 places, 81 transitions, 194 flow [2021-08-12 19:17:17,485 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 93966 states, 93964 states have (on average 3.7646439061768335) internal successors, (353741), 93965 states have internal predecessors, (353741), 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) [2021-08-12 19:17:17,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 93966 states, 93964 states have (on average 3.7646439061768335) internal successors, (353741), 93965 states have internal predecessors, (353741), 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) [2021-08-12 19:17:18,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-12 19:17:18,478 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:17:18,479 INFO L550 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] [2021-08-12 19:17:18,479 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:17:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:17:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1096141821, now seen corresponding path program 1 times [2021-08-12 19:17:18,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:17:18,491 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772778752] [2021-08-12 19:17:18,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:17:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:17:18,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:17:18,599 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:17:18,599 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772778752] [2021-08-12 19:17:18,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772778752] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:17:18,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:17:18,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:17:18,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986560491] [2021-08-12 19:17:18,603 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 19:17:18,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:17:18,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 19:17:18,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:17:18,725 INFO L87 Difference]: Start difference. First operand has 93966 states, 93964 states have (on average 3.7646439061768335) internal successors, (353741), 93965 states have internal predecessors, (353741), 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) [2021-08-12 19:17:21,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:17:21,467 INFO L93 Difference]: Finished difference Result 175965 states and 661092 transitions. [2021-08-12 19:17:21,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 19:17:21,469 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 [2021-08-12 19:17:21,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:17:22,469 INFO L225 Difference]: With dead ends: 175965 [2021-08-12 19:17:22,469 INFO L226 Difference]: Without dead ends: 93964 [2021-08-12 19:17:22,569 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:17:31,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-08-12 19:17:34,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-08-12 19:17:34,413 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) [2021-08-12 19:17:34,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 349229 transitions. [2021-08-12 19:17:35,157 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 349229 transitions. Word has length 75 [2021-08-12 19:17:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:17:35,158 INFO L482 AbstractCegarLoop]: Abstraction has 93964 states and 349229 transitions. [2021-08-12 19:17:35,158 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) [2021-08-12 19:17:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 349229 transitions. [2021-08-12 19:17:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-12 19:17:35,671 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:17:35,671 INFO L550 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] [2021-08-12 19:17:35,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-12 19:17:35,671 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:17:35,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:17:35,672 INFO L82 PathProgramCache]: Analyzing trace with hash 493735869, now seen corresponding path program 2 times [2021-08-12 19:17:35,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:17:35,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107551231] [2021-08-12 19:17:35,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:17:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:17:35,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:17:35,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:17:35,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107551231] [2021-08-12 19:17:35,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107551231] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:17:35,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:17:35,717 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-12 19:17:35,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763266822] [2021-08-12 19:17:35,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-12 19:17:35,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:17:35,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-12 19:17:35,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:17:35,719 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) [2021-08-12 19:17:37,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:17:37,285 INFO L93 Difference]: Finished difference Result 156191 states and 577703 transitions. [2021-08-12 19:17:37,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-12 19:17:37,285 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 [2021-08-12 19:17:37,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:17:37,973 INFO L225 Difference]: With dead ends: 156191 [2021-08-12 19:17:37,973 INFO L226 Difference]: Without dead ends: 93964 [2021-08-12 19:17:38,093 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-12 19:17:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-08-12 19:17:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93964. [2021-08-12 19:17:49,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93964 states, 93963 states have (on average 3.6686674542107) internal successors, (344719), 93963 states have internal predecessors, (344719), 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) [2021-08-12 19:17:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93964 states to 93964 states and 344719 transitions. [2021-08-12 19:17:49,918 INFO L78 Accepts]: Start accepts. Automaton has 93964 states and 344719 transitions. Word has length 75 [2021-08-12 19:17:49,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:17:49,926 INFO L482 AbstractCegarLoop]: Abstraction has 93964 states and 344719 transitions. [2021-08-12 19:17:49,927 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) [2021-08-12 19:17:49,927 INFO L276 IsEmpty]: Start isEmpty. Operand 93964 states and 344719 transitions. [2021-08-12 19:17:50,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-12 19:17:50,390 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:17:50,390 INFO L550 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] [2021-08-12 19:17:50,390 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-12 19:17:50,391 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:17:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:17:50,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2131980333, now seen corresponding path program 3 times [2021-08-12 19:17:50,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:17:50,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608988987] [2021-08-12 19:17:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:17:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:17:50,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:17:50,798 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:17:50,798 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608988987] [2021-08-12 19:17:50,798 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608988987] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:17:50,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:17:50,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-12 19:17:50,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401440180] [2021-08-12 19:17:50,799 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-08-12 19:17:50,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:17:50,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-12 19:17:50,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-08-12 19:17:50,800 INFO L87 Difference]: Start difference. First operand 93964 states and 344719 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 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) [2021-08-12 19:17:56,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:17:56,613 INFO L93 Difference]: Finished difference Result 221521 states and 816097 transitions. [2021-08-12 19:17:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-12 19:17:56,614 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 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 [2021-08-12 19:17:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:17:57,836 INFO L225 Difference]: With dead ends: 221521 [2021-08-12 19:17:57,836 INFO L226 Difference]: Without dead ends: 193744 [2021-08-12 19:17:57,926 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 329.7ms TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2021-08-12 19:18:09,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193744 states. [2021-08-12 19:18:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193744 to 100718. [2021-08-12 19:18:13,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100718 states, 100717 states have (on average 3.6551624849826743) internal successors, (368137), 100717 states have internal predecessors, (368137), 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) [2021-08-12 19:18:13,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100718 states to 100718 states and 368137 transitions. [2021-08-12 19:18:14,052 INFO L78 Accepts]: Start accepts. Automaton has 100718 states and 368137 transitions. Word has length 75 [2021-08-12 19:18:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:14,053 INFO L482 AbstractCegarLoop]: Abstraction has 100718 states and 368137 transitions. [2021-08-12 19:18:14,053 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 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) [2021-08-12 19:18:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 100718 states and 368137 transitions. [2021-08-12 19:18:14,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-12 19:18:14,289 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:14,289 INFO L550 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] [2021-08-12 19:18:14,289 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-12 19:18:14,289 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:18:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:14,291 INFO L82 PathProgramCache]: Analyzing trace with hash 1590701179, now seen corresponding path program 4 times [2021-08-12 19:18:14,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:14,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273978360] [2021-08-12 19:18:14,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:14,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:14,477 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:14,478 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273978360] [2021-08-12 19:18:14,478 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273978360] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:14,478 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:14,478 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-12 19:18:14,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412121511] [2021-08-12 19:18:14,479 INFO L462 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-08-12 19:18:14,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:14,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-12 19:18:14,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-08-12 19:18:14,480 INFO L87 Difference]: Start difference. First operand 100718 states and 368137 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 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) [2021-08-12 19:18:15,202 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2021-08-12 19:18:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:20,720 INFO L93 Difference]: Finished difference Result 206027 states and 756279 transitions. [2021-08-12 19:18:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-08-12 19:18:20,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 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 [2021-08-12 19:18:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:22,039 INFO L225 Difference]: With dead ends: 206027 [2021-08-12 19:18:22,039 INFO L226 Difference]: Without dead ends: 172724 [2021-08-12 19:18:22,131 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 709.4ms TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2021-08-12 19:18:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172724 states. [2021-08-12 19:18:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172724 to 121087. [2021-08-12 19:18:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121087 states, 121086 states have (on average 3.661860165502205) internal successors, (443400), 121086 states have internal predecessors, (443400), 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) [2021-08-12 19:18:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121087 states to 121087 states and 443400 transitions. [2021-08-12 19:18:38,082 INFO L78 Accepts]: Start accepts. Automaton has 121087 states and 443400 transitions. Word has length 75 [2021-08-12 19:18:38,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:18:38,083 INFO L482 AbstractCegarLoop]: Abstraction has 121087 states and 443400 transitions. [2021-08-12 19:18:38,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 9 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) [2021-08-12 19:18:38,101 INFO L276 IsEmpty]: Start isEmpty. Operand 121087 states and 443400 transitions. [2021-08-12 19:18:38,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-12 19:18:38,520 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:18:38,520 INFO L550 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] [2021-08-12 19:18:38,520 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-12 19:18:38,520 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:18:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:18:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash -833082245, now seen corresponding path program 5 times [2021-08-12 19:18:38,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:18:38,524 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689402950] [2021-08-12 19:18:38,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:18:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:18:38,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:18:38,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:18:38,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689402950] [2021-08-12 19:18:38,896 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689402950] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:18:38,896 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:18:38,896 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-08-12 19:18:38,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269659238] [2021-08-12 19:18:38,897 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-08-12 19:18:38,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:18:38,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-12 19:18:38,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-08-12 19:18:38,898 INFO L87 Difference]: Start difference. First operand 121087 states and 443400 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) [2021-08-12 19:18:50,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-12 19:18:50,302 INFO L93 Difference]: Finished difference Result 327053 states and 1195392 transitions. [2021-08-12 19:18:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-08-12 19:18:50,302 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 [2021-08-12 19:18:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-12 19:18:51,627 INFO L225 Difference]: With dead ends: 327053 [2021-08-12 19:18:51,628 INFO L226 Difference]: Without dead ends: 300980 [2021-08-12 19:18:51,736 INFO L806 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 296.9ms TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-08-12 19:19:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300980 states. [2021-08-12 19:19:12,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300980 to 154501. [2021-08-12 19:19:12,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154501 states, 154500 states have (on average 3.674168284789644) internal successors, (567659), 154500 states have internal predecessors, (567659), 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) [2021-08-12 19:19:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154501 states to 154501 states and 567659 transitions. [2021-08-12 19:19:14,126 INFO L78 Accepts]: Start accepts. Automaton has 154501 states and 567659 transitions. Word has length 75 [2021-08-12 19:19:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-12 19:19:14,128 INFO L482 AbstractCegarLoop]: Abstraction has 154501 states and 567659 transitions. [2021-08-12 19:19:14,128 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) [2021-08-12 19:19:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 154501 states and 567659 transitions. [2021-08-12 19:19:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-12 19:19:14,686 INFO L542 BasicCegarLoop]: Found error trace [2021-08-12 19:19:14,686 INFO L550 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] [2021-08-12 19:19:14,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-12 19:19:14,686 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-12 19:19:14,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-12 19:19:14,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1787041377, now seen corresponding path program 6 times [2021-08-12 19:19:14,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-12 19:19:14,687 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471425136] [2021-08-12 19:19:14,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-12 19:19:14,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-12 19:19:14,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-12 19:19:14,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-12 19:19:14,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471425136] [2021-08-12 19:19:14,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471425136] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-12 19:19:14,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-12 19:19:14,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-08-12 19:19:14,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227871783] [2021-08-12 19:19:14,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-08-12 19:19:14,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-12 19:19:14,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-12 19:19:14,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-08-12 19:19:14,888 INFO L87 Difference]: Start difference. First operand 154501 states and 567659 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 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)